CoilDesigner Demonstration

you you you you you you you you you

you you you you you you you you you

you you you you you you you you

you you you you you you you you you

you you you you you you you you

you you you you you you you you you

you you you you you you you you

you you you you you you you you

all right good afternoon everyone thanks for your patience and thanks for joining it looks like most of our attendees have joined at this point so I think I'll go ahead and get started

again just a reminder if you'll please keep your microphones muted during the presentation and I will try to answer

some questions towards the end of the meeting which if you if you don't mind I'd prefer to have submitted through the chat feature within goto meeting so if

you send a chat with your questions at any point during this session I can we can discuss those towards the end of the meeting or follow up afterwards so my

name is Dennis Masuda and the engineering manager at optimized thermal systems and today we're just going to go through a brief demonstration of our

coil designer software this is really just a basic overview of the capabilities of the software and a demonstration of some applications of

how the tool can be used for any interested new users you should be able to see my screen right now which I'm

sharing with the group and I'm going to walk through just a demo of the application of the software before I begin just a bit of introduction I want

to just briefly describe optimized thermal systems and quele designer for those of you who aren't familiar I suspect that most of our guests today

have become familiar with with OTS through our webinar series that we hosted with the International copper association over the last few months and the purpose of this session is really to

give a little bit more background on our coil designer software but by way of introduction optimized thermal systems

is a company a consulting company that grows out of the research that was been conducted and continually conducted at the University of Maryland College Park and their center for environmental

energy engineering this department has developed some state-of-the-art tools for modeling heat exchangers and vapour compression systems and out of that work

several commercial software packages have been developed which OTS has the

licensing agreement to to distribute so the total I'm going to be showing today is called coil designer this is a tool

that OTS distributes commercially uses for consulting work and has licensing rights to customize for our customers as well and the purpose of the tool is

really for the simulation of heat exchangers both tube and fin micro channel as well as some coaxial heat exchanger types and a few other variants

so I'll show so with that I'll go ahead and get started with the demonstration up on my screen right now you should be

able to see the blank coil designer window before I've started any work and I'm going to go ahead and walk through

the process of creating a model for tubing fin heat exchanger so I'll start by going to file and new and this will

start up a new coil wizard which will walk me through the steps to configure a heat exchanger that I can then use for simulations as I start walking through

the steps of this in this process the software will ask me which types of heat exchanger I'd like to model and here you can see the capabilities within coil designer so for this example I'll focus

on a tube in fin heat exchanger but we also have the ability to simulate a microchannel heat exchanger coils with flat tubes wire spinning to impede

exchanger and so called coaxial tube in tube heat exchanger and after I go through this demonstration if we have time I can also demonstrate the micro

channel interface as well but one of the nice things about the software is that all of these heat exchanger types can be modeled through a very similar process through the same user interface so the

process that we show here for the tubing fan coil will be very much the same for the other coil types so with this selected I go into the basic setup of

the solver and the model of this coil first I have to choose the type of solver and the default here is the fast solver this is typically recommended for

most of our simulations but we have some capabilities to implement more event solvers later on down the line as we

fully configure our model we can implement these additional solvers that may allow for non-uniform mass flows through the coil or conduction through

the fins in the heat exchanger so right now I'm going to go with that this fast solder which is appropriate for most applications to start now the principle

of working principle behind coil designer is that it is a finite control volume based model so that means is we're looking at a heat exchanger and we're breaking it into a large number of different control volumes and then

within each of these control volumes we're calculating energy and mass balances that propagates through all of the segments of the heat exchanger so to

specify our model we need to state the number of segments that we'll be dividing this heat exchanger into for

evaluation so we typically divide the heat exchanger up in terms of the number of segments per tube so you may have a heat exchanger with a large number of tubes will break each of those tubes

into several segments and solve those equations out in each segment here I'll start with a default of ten segments per tube and typically we recommend having

statements that are less than 10 centimeters each for good calculations and this is something that you can experiment with on your own to understand the trade-offs between speed

and accuracy as including more or less segments within your model so now I'm going to really begin

of outlining the geometry details of the heat exchanger that we are configuring here and the first step in that process

is defining the tubes of the heat exchanger so here we can have a heat exchanger that has inline tubes as shown in this diagram or staggered tubes and

we can go through the process of specifying the number of tubes and their dimensions so in this case for this

example I'll just begin with a heat exchanger that has 24 tubes per Bank as we call it this is in the transverse direction if we were looking at the face

of the coil see the number of tubes going upwards and then I'll specify two tube Bank and then this is the number of

rows in the in the air flow direction so here we have a 24 by 2 coil the next thing I'm going to do is enter the

dimensions of the tubes let's say that these are about a half a meter long and I want to demonstrate some of the capabilities of the software for a

smaller diameter tube heat exchangers so we will put in the details of a 5 millimeter tube coil now you can see here I'm entering my dimensions in

millimeters and that's because it's a setting that I've personally sat on on my system but this is something that can be customized by each user so that the

default values are in whatever units you prefer and the conversions can take place automatically within the interface so I'll go ahead and enter the dimensions between tubes the horizontal

and vertical spacing and then we have the ability to enter the details of the tubes internally as well so if we have smooth tubes we check this box here but

if we have enhanced or micro fin tubes we can enter all the geometry details that pertain to that to type so here I'll put in some dimensions for

five millimeter microphone tubes and all of these characteristics are defined in the drawing that I just pulled up there which you can access with this button

and with that we have entered all of the information that's required for specifying the geometry of the tubes and the next step is to move on to the

sentence so in this case I want to look at such a fiying the dimensions of the fins themselves so the thickness thickness of the fin and the sim density

and here we define that in terms of fins per inch which also that is 15 fins per inch and we have a number of options available to us for the type of sentence

so we can have flat plate fins we can have flip fins Lugar fins wavy fins or even just bear tubes that don't have any

fins on them in this case I'm going to pick a louvers in configuration and you can see when I select a fin type drawing pops up here on the right side that

tells me the dimensions that I need to enter to define that fin with this louver fin I know that this horizontal louver pitch is about one point six

millimeters and the height of the louvers is about one millimeter so I can enter those geometry details in here the

next thing I'm going to do is enter the refrigerant that's that's used in the heat exchanger and I have a lot of options here we support the refrigerants that are

derided the refrigerants that are in the mists rest prop database so you can see this drop down contains all of the working fluids that we typically

encounter in the HVAC industry as well as some other brines and water some natural refrigerants and and other

fluids and some some proprietary floats as well so we can select our in this case I just want to model r410a

so I can select that from the drop-down list and our exit our external fluid is air there's some more flexibility here if that's desired if you have a

proprietary fluid that we don't have yet in the software you can add your own fluid properties directly into the software and load that in or if you're

investigating mixtures you would even be able to define a user-defined mixture by specifying different constituent components here of different

refrigerants and a mass fraction for each of those so with these selections made I can move on to the final step of the initial setup of this coil and this is to select

the heat transfer and pressure drop correlations that are used in the calculation of the heat exchangers performance so this is really the foundation of Howell coil designer works

the calculations that it performs are based on empirical correlations that come out of the literature from various peer-reviewed papers where authors have

characterized the heat transfer and pressure drop performance of sins and tubes so to specify the performance of this heat exchanger it's important that I get accurate predictions if heat

transfer and pressure drop for the surfaces that we're working with so you saw before that I specified louver fins and I therefore need to select a

correlation on the air side that's appropriate for louver fins so when we drop down our list we can see that large number of correlations that are Verrill available for different skin types and

because we're talking about louver fins we move on to the these three options here that are that are that are given

for louvers and heat exchangers and one of these we know was recently developed at OTS specifically for small diameter tubes and heat exchangers so we're

building here a 5 millimeter coil so we're going to select this that is valid for the three to five millimeter tube diameter range so if I select this this correlation will be used to calculate heat transfer

coefficients on the air side clip these fins and I'll do the same thing on the pressure drop side I can use this off there's correlation to predict the air

side pressure drop for my small diameter louver finis exchanger and I'll follow through the same process for the tubes you saw that we specified micro fin

tubes for this coil so we want to select correlations that are valid for micro thin tubes as opposed to smooth tubes and I need to specify heat transfer and pressure drop correlations for each

phase of refrigerants liquid to phase or the vapor region so for the liquid and vapor phase in a two phase heat exchanger these these don't make a

enormous contribution towards the overall performance but we want to capture the performance nevertheless and here I'm going to pick a correlation that is specified for micro fin or

internally enhanced tubes so I can select that for my heat transfer coefficient for a liquid phase as well as vapor phase and I'll do the same

thing for pressure drop to specify a micro fin correlation for the liquid phase and the vapor phase and now finally I need to specify the

performance in the two-phase region and at this point we need to distinguish between whether or not we're modeling a condenser or an evaporator for this

particular model we're going to focus on a condenser and so from that I need to select correlations that are valid for a condenser now you can see we have correlations for evaporators

correlations for condensers some of these are very specialized they work specifically for co2 or specifically for ammonia in this case we want to find a correlation that is applicable for our

micros in tubes and for condensation so we'll select this correlation from Kalama and we'll do the same thing for the refrigerant pressure dropped into phase

and with this we've set up the fundamentals of the SI exchanger we've carefully gone through to consider the heat transfer and pressure drop performance for both surfaces and we now

have the framework to perform simulations with this heat exchanger I should also mention we have the flexibility to add your own correlations to customize or tune those correlations

based on lab data or CFD simulations so if the correlations that exist in the literature that are included on aren't applicable for your particular heat

exchanger type or aren't matching well with your lab data there's always room for customization of the total by by each user now after completing this

walkthrough I get the main screen showing me my my newly configured heat exchanger on the left side I can see a grid that represents if we were at in

the airflow direction looking at the face of the coil and the reason this is divided up into a grid is because we've specified in setting up this coil ten

segments along each tube and we have 24 tubes vertically and so this grid allows us to import air flow data so if we have

information from an experimenter from a CFD simulation we can specify different velocities temperatures relative humidities at different locations entering the face of the coil so it allows us to account for air flow of

mail distribution non-uniformity considering the tube side you can see we have arrows here on the last flowing from left to right and our tubes are

shown on the the center of the screen as if they were going into the screen and computer now these tubes right now are

are just you know a blank canvas and we can specify the circuitry however we like now that means I can go right into this interface and directly click to

define my circuitry by by clicking between any two tubes if I hold shift I get a connection on the opposite side

and I can set individual tubes as inlets or outlets in any pattern that that I like now for this example I'm just

working with a very simple counter flow circuitry so I can use one of the features within project generate circuits to automatically build this

circuitry so here I just want to have two counter flow circuits construction for this heat exchanger when I click OK that will generate this counter flow

configuration of circuitry where the flow comes in a tube 25 goes back and forth and down and crosses over at the middle of the heat exchanger and comes

back up and exits a tube member 1 and the same with this second circuit down below so now we've entered all of the geometry details of the heat exchanger

the circuitry the next step is to define the flow conditions that the heat exchanger is going to be experiencing so to do that I can go to project edit air

and refrigerant Inlet State and this is one place where I can very simply specify the overall air velocity and air flow conditions and the refrigerant flow

conditions coming in to the heat exchanger now I mentioned this would be a condenser so we want to specify a refrigerant state that makes sense for a

condenser the the software is able to model a condenser and evaporator or a single-phase heat exchanger but we need to specify operating conditions that

thermodynamically makes sense at that inland so for this condenser we would specify a pressure and temperature that is one can be any way to specify the

superheated vapor state that would typically enter a condenser and that means I can put in my pressure temperature and mass flow rate on the

refrigerant inlet side in this case I can specify that that would be about let's say two point seven mega Pascal's

and the refrigerant temperature is going to be about 322 Kelvin

which is 120 F and then we can set the refrigerant flow rate in this case about

28 grams per second on the air side we

can set the pressure the temperature and the relative humidity and then to

specify the air flow rate we can enter the air flow rate in in terms of volumetric flow rate here's one meter

cube per second or we can specify the velocity of the face of the coil so I'll go ahead and enter these conditions and

this will define our tube and fin heat exchanger and allow us to run a

simulation so when the simulation is completed these are what those results will look like and this is a dashboard that shows us the summary of how our

heat exchanger is performing so on the left side we have tabular outputs of all the performance information for this coil we have information about the heat load this is a condenser so it's all

sensible heat but we can look at the latent load or condensation it's a caesarian evaporator we have an estimate of the charge of refrigerant inside the

heat exchanger summary of the flow rate pressure drops on the air and refrigerant side as well as the outlet States for both fluids and some summary

information about the heat transfer area heat transfer coefficients that were calculated in the model as well as overall summary information about dimensions mass and we can put in our

own functions for cost if that's an objective for this exercise on the right side you can see a summary of some of

the performance shown graphically we can see the comparison between sensible and latent load we can see the visualization of the heat transfer coefficients of the different surfaces or we can see the refrigerant side heat transfer

coefficients are obviously larger than airside heat transfer coefficient and then we can see the distribution of the phases of refrigerant inside of this heat

exchanger and on a length basis we can see that a small amount of the heat exchanger is occupied by superheated vapor about half of it is occupied by two phase refrigerant and then about

half of it is occupied by some cold liquids so you know the state point we've specified here we can see is probably not as much mass flow as this heat exchanger could handle we have a

very large sub cooled region region and we could get more capacity out of it if we ran with a higher mass flow rate so these kind of tools are useful for making those kind of assessments to

understand what's happening in our model when we run a simulation and we can see these results in tabular form and we could look down even into very low level

details to see for example the temperatures or vapor quality at every segment of every tube and this allows us to do things like identify the location

where phase change occurs here we can see for example in tube number 24 there's a change of phase occurring and

we can explore exactly how the inner workings of our you can change your look there's additional plotting functionality here for understanding the

the distribution of heat load against tubes or temperatures along the coil face and we can see a visualization of

the temperatures on our heat exchanger and we can export all these results to excel or as a PDF for for storing that

information so this is already a fairly powerful tool for just simulating one given heat exchanger but we can continue this process and really use this as a

tool to aid in heat exchanger design so one of those functions I want to show here is the parent parametric analysis capability so if I go to project and

parametric analysis here I can define a parametric study where I can vary geometry parameters of the heat exchanger or flow conditions entering the heat

exchanger and and study the impacts that these different parameter changes have

on the models performance so the parametric analysis is up on my screen

here now and within here you can see various geometry parameters within the heat exchanger that we could alter we could apply different correction factors

to different correlation predictions and we could vary things like the air side Inlet conditions or the refrigerant stream conditions coming into the coil so just as an example I could look at

what happens when I change my fin density from 15 cents per inch up to 20

fins per inch for example and if I do something like this I can update my parametric table I can simulate my my

coil under these different conditions and I can quickly assess the impact of the performance change that occurs when I add greater fin density here you can

see I have an increase in heat load and an increase in pressure drop as they get more fins as we would expect but we can also extend this to multiplicative

studies where we look at different parameters in in combination so if I also want to study changing the two

blanks or the air flow conditions I can very quickly evaluate a large number of different designs within this interface and so there are some options here where we can look at individual pairings and

changing these values here we change the two blanks across the full range while keeping the simper inch the same and then we change the fin per inch while keeping the tube length the same we can

do a combination where we change both parameters at the same time or probably the more useful of these options is the multiplicative study which gives us every pairing of all of these different

combinations of parameters and we can easily think of thousands or tens of thousands of different combinations that we might want to evaluate for a heat exchanger and here you can see we can very rapidly evaluate all these different

combinations of heat exchanger designs and we can extend that even further he also may have noticed that on this simulation two results were showing up simultaneously and that's because we're

running these simulations in parallel here I've specified that I want to run two runs in parallel but if you could run this simulation on a workstation or server with larger number of processors you could conceivably run on large

number of cores and very quickly evaluate thousands of designs right

within this tool so with that we have a coil model built we have an assessment

of its performance and some studies of the effect of changing various parameters we also have the ability to

save this file when we go to save or save as we create a file called coil designer heat exchanger file the extension is dot chx and we can load

that back into coil design at any time and we can run the same evaluation same types of simulations and make modifications to it at a later date but we can also read that into our other

software zip psych which allows us to plug in that heat exchanger into an entire vapor compression cycle model this would allow us to simulate the impacts of multiple heat exchangers and

compressor design changes to evaluate a full heat pump or air conditioner or refrigeration cycle while maintaining all of the modeling details of one of

these very very detailed heat exchanger simulations so that is one of the other extensions of this of this tool is the ability of the ability to not just

evaluate the heat exchanger performance but also the entire cycles performance so very quickly I want to just demonstrate a microchannel heat

exchanger as well and walk through some of the steps for configuring that just

to demonstrate the

the concept very priestly alright so here again you can see another blank

coil designer file or interface and here we can start a new coil file again but this time we want to make a microchannel heat exchanger and we have the ability

to do a microchannel coil that has headers or one that is serpentine configuration whereas it's a continuous

continuous micro channel - that's bent between the different tubes vertically here I'm going to look at a channel that

has headers again we can set the solver information and the number of segments and we can go ahead and enter the information about the tubes so you can

see the interface is very much the same we have a a2 configuration and then fin and refrigerant the same process is

followed for this particular design I want to look at something with let's say a 12 millimeter vertical spacing between

tubes and the tubes here are 20 millimeters wide and 2 millimeters tall let's just say they have one millimeter

ports with 15 ports per tube and you can see this that we can specify a rectangular ports but we can also put in circular ports or we can enter additional information about the

hydraulic diameter if we have some non rectangular or non circular geometry we can account for the performance of that

by entering the hydraulic diameter and cross sectional area of important the next step is to enter the information

about the fins again and here I can set my fin thickness and fin density and with the louvers there with the microchannel heat exchanger we typically

see louver fins applied and we can enter the geometry for the lure fans and very much the same way as we can with the tube fin

interface so I'll just go ahead and leave the default values for now for the geometry of the fins for the refrigerant again we have the same flexibility of

different refrigerants here we'll just select r134a and then finally I'll go through this process of selecting appropriate correlations where we'll

select a correlation on the air side that is suitable for louver fins will select correlations for liquid phase and vapor phase refrigerant that he would

see in any heat transfer or fluids textbook for the single phase heat transfer and correlation and pressure drop correlations have selected and then

in this case let's make this an evaporator so I'll select a correlation that is appropriate for an evaporator

here the correlation from sha for the heat transfer coefficient and or recent

correlation or pressure drop in the evaporator so just like that we've configured our micro channel evaporator and you can see the interface is very

similar to the tube and fin interface but here in the center of our screen we have our micro Channel tubes which are going into the screen and the individual

ports that are inside of each of these tubes so we have the ability to specify really any header configuration we could

imagine here so we could have multiple passes of the heat exchanger and we can do that by defiance by adding individual headers in a similar manner to how we add you might and outlet States for the

tube thin coil but we also have another process to speed up the reconfiguration of these if we go at a project and

define micro channel passes here we can specify multiple passes of the of the coil by the number of tubes and it will automatically generate the head is for us in this case I'll just look at

a single past configuration for simplicity when I say okay that'll generate my header configuration here you can see in the front of the screen here in red that's my Inlet header and

the back of the screen in blue that's the outlet header and then to try this one out we can enter the air and

refrigerant Inlet state again and again this is the same interface as we see in tubing sin but since we're working with an evaporator in this case and not a condenser we need to specify an inlet

condition that makes sense for an evaporator so in an evaporator we typically have two phase refrigerant entering and so I can specify here

saturation temperature or an evaporation temperature as it might be called and the vapor quality the percent vapor quality at the inlet to the evaporator

and then I can set the refrigerant mass flow rate and the same conditions with the same conditions apply with the inlet

air let's say that we're going to operate with 27 degrees C pair with the seven degrees C separating temperature with this information I should be able

to simulate this coil and get a

prediction of of its performance and here's a look at my overall heat

exchanger performance you can see again very essentially identical display to

the tips to the tube and fin interface so with that I think I have covered the main features I'd like to include in

this demonstration for both the tube and fin and the micro channel interface within coil designer and I'll go ahead and give a couple of minutes if anyone

wants to submit additional questions through the chat feature I can review those and provide some feedback I'll go ahead and start reading through those at this time

so we received a couple of questions I'll start from from the top we have one question coming in about how to model tubes if they have different lengths

maybe one row has a different lengths and the second row this is something we would definitely encounter in something like a condenser coil outdoor unit that

that has a has a bend a you bend or an l-shaped Bend at this point we don't have a way to do that within the interface of the software and typically we just use the average length of the

two tubes and in general this gives it gives us predictions that are you know reasonably close to what we see in the

experiment there is a question about having multiple sub cooling lines or and I think that this this is really

answered by the customization of the circuitry I should a very simple circuitry here for this tube thin coil but conceivably we could have any number

of circuits defined here they could have different lengths and we can account for it you know that the the performance of each of those individual circuits based

on how we've defined them in the model we also have the ability to enter feeder tubes upstream of the coil so for each Inlet coming into the heat exchanger we

can specify a diameter and length of the tubes that feed it and there's another question asking if Rose has different

numbers of tubes how can that be modeled one option for doing that is to use plugged tubes so for example if I have in this this model that I've shown

previously where we have 24 tubes vertically if one of these tubes is it's the if one of these rows not have the same number of tubes so the second row

has less tubes than the first row I can make some of these tubes plugged so for example I can make this tube essentially

disappear and it won't and I can continue to do that to have a different number of tubes and that's about the level of flexibility that's that's available within an interface if

you want to have less tubes or more tubes in different rows you can block them off so that they're not simulated there's another question about leaving

again kind of leaving out a knotch for you know some some interference that's blocking flow and we can account for

that by specifying me the air air velocity profile that comes into the exchangers so if we have you know the assumption here is that everything is

uniform which is rarely the case but if we want to specify that some particular section of the coil doesn't receive air

flow in the same way that via the rest of the coil does we can we can reduce or eliminate them reduce the velocity of

the air that enters a particular segment so if you think of this as a grid we can specify any part of this this coil face area and reduce the velocity there too to represent

something more realistic as far as what is the real velocity distribution when you have all the blockages and non-uniformities that come from the enclosure where this coil is actually installed and so one place where we can

do that is within project edit airside parameters and this is an interface that lets us specify temperature relative humidity and velocity across this entire grid of course we're not going to do

that by hand but we have the ability to load and save files of this type so if you have data on your air flow distribution or you want to create with

something some template in Excel or you have data from CFD simulation we can go through here and load in an air flow profile that blocks off part of the coil or maybe it has a gradient where the top

of the coil sees a different velocity and then the bottom of the coil if we're talking about some type of enclosure or a coil configuration for example so we

have some flexibility there for how the air flow configuration is specified so I see one feedback saying someone's getting an error when trying to follow

my model I guess there must be some difference in the values that you entered and we're happy to answer those those questions through our support

email address which I'll go ahead and put up on the screen and this is one of

the features that is provided to our to our coil designer customers is technical support by our engineers at OTS we can

receive your heat exchanger files review them and and provide some guidance as to where where things may be going wrong in

in this case I think any number of entries in terms of geometry or correlations that don't don't match for the the particular heat exchanger that

we're looking at could could always you know yield yield errors and our staff is available to help provide that guidance

and in terms of fixing models that aren't working there's a question about

liquid overfeed coil simulation this is one I think I can take offline if you want to follow up with me by email we

can discuss that particular application further and there's a question about

tube orientation if the tubes are not horizontally oriented it is it's a good

question so in general we see that the gravity effects in most tubes and heat exchangers of the size range we see an

HVAC usually these effects are not extremely influential over the overall performance and we can get reasonable

results whether or not the tubes are oriented vertically or horizontally but fundamentally the question comes down to how the correlations were developed so

oil designer is really just based on these empirical models that authors have published for heat transfer and pressure drop performance in tubes and so some the majority of these authors develop

those correlations for tubes in a horizontal configuration but there's certainly literature out there that provides performance information for tubes that are vertically oriented and

so that's something that can be customized by an individual user you can add correction factors or add your own correlations if you find that you kind

of gravity effects from having vertical

tubes are are very significant and there's another great question about the selection of correlations I think it's

one of the most overwhelming features looking at the software there's a very large number of correlations that are

that are available to the user and it's often desirable to have some guidance or the selection of those right now we don't have any any summary document that

really something that provides guidance on a general selection for all options but we do offer as part of the licensing

technical support and training so each new user is entitled to training with with the OTS team and typically in those training sessions we go through

something like this demo process that we just saw today but we do it in a customized manner so we'll look at a particular coil that is of interest to

your company and we'll go through all the steps to model that validate that model and in that process kind of provides some guidance as to what type

of correlation is appropriate for your for your application and we try to train you through that process so that you can

internally develop some experience with the right selection correlations for your particular application because it can it can certainly very significant

from different fields and different product lines and manufacturers but it is something that we are working towards providing some more general guidance in

terms of the best correlations but often really making the best elections comes down to having having experience with the tool and end of and understanding of

experimental performance from from your particular product all right so I'll hang on a couple of minutes in case any more questions come

in but we'll be available to kind of work with you if you have any if you run into any issues if you want to contact

us at support email address I believe that all of our invitees to this session should have access to the software on a

temporary trial basis if you need to help with configuring that you can reach out to us at the same email address and then for any other additional kind of

sales questions about the software the trial license you can calm so you can

contact Tom drache I'll leave these up for a couple minutes and wait if anyone has additional questions but otherwise

I'll thank you all for your time and we'll be in touch if we can provide any additional assistance with evaluating coil designer you

so I hadn't initially planned to offer that up there's a question coming in about watching this video again after this session is over I have recorded

this session so I can look into whether or not we can we can host that on our YouTube page or something beyond that we also have another demonstration from our

third webinar for the ICA educational series and part of that webinar includes a demonstration of tubes in coil in coil

designer and that is also up so we'll try to follow up with everyone to provide some some additional materials for review after the sessions over you

all right everyone it looks like that's the extent of the questions that are coming in again you can contact us by email and appreciate everyone everyone's

time for joining and look forward to hearing from you in the future thanks again