[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [EnergyPlus_Support] Re: Double wheel energy Recovery





To cjm23113 and Jim,
If you contact your local rep.  Send the input criteria required to them and the equation requirements, they would probably help you.  Several senior people at Semco are working with the different energy modeling software developers, (Trane, HAP, eQuest, Eplus is on the list) to develop algorithyms  so the Pinnacle and EP units can be modeled.  The one with HAP is complete.  They recognize this is a problem.  I don't know if they can accomplish this in the time you need, but provided them all the input info required and engineering references might help speed the response up, so they are not looking at the info "blind".

John


From: cjm23113 <cjm23113@xxxxxxxxx>
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Thu, June 10, 2010 6:25:54 PM
Subject: [EnergyPlus_Support] Re: Double wheel energy Recovery

 



Jim,

I have actually encountered these same questions trying to model the Semco Pinnacle myself. I have modeled the system and managed to get it to run using Dehumidifier:Desiccant:System and HeatExchanger:Desiccant:BalancedFlow. The problem with this solution is that HeatExchanger:Desiccant:BalancedFlow requires a HeatExchanger:Desiccant:BalancedFlow:PerformanceDataType1. This performance curve has 51 fields (16 of which are equation coefficients) and only two examples in PerfCurves.idf (neither of which seem remotely close to the Semco Pinnacle - they are for systems with reactivation heaters). I would imagine that it would be nearly impossible to get any manufacturer to give you enough information to create this performance curve yourself. I'd like to talk more about this offline if you are interested.

Does anyone else have any input? I think that passive desiccant wheels will only become more prevalent with time and I would love to see them get accurately modeled sooner rather than later.

Chris

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "jvd2pe" <jvd2pe@...> wrote:
>
> Dear E+ forum,
>
> I've been asked to model a double wheel energy recovery unit, similar to a Semco Pinnacle. I have two questions for you:
> 1) The general idea seems reasonably straightforward, but I have only modeled a single wheel style previously, and wonder if there are any surprises or special approaches that must be used for a double wheel.
> 2) The controls for these units are rather sophisticated to minimize energy use and prevent freezing or condensation in the wheel. Has anyone attempted to precisely simulate the controls for something like a Pinnacle? Care to share tips?
>
> p.s., If, after feedback and further study, I am not confident that I can properly create the model, I will tell my client that they should look for another modeler who is more talented than I in this particular area. Would any of you like a call? If so, please let me know via private communication. (jim@...)
>




__._,_.___


Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are currently allowed but be mindful that not everyone has a high speed connection.  Limit attachments to small files.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.




Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe

__,_._,___