Re: [TRNSYS-users] Questions about Type 194 and Type 665

Hello,David,I urgently want to get your help.

Following are the parameters I missed.

Temperature coefficient of short circuit current = 0.0010 [1/k]

Temperature coefficient of open circuit voltage = -0.0038 [v/k]

It's a mono-silicon based panel. All of the parameters I sent to you are from the product manual. The test result of open circuit voltage also matches that value.

I also want to know which type I should use, type194 or type194b? The parameters of Type194b's seem can be changed. But a message " Only mode 1 has been implemented, mode 2 was created for future updates" is showed in mode card. I'm not sure whether it has been implemented now.

I have another question about the capacity of a battery bank. The capacity of a battery bank will not vary with the number of cells in series. So if it means that the cell capacity should vary with the number of cells in series?

Best regards!

Guangzhao,
I also need to know the temperature coefficient of short circuit current and the temperature coefficient of open circuit voltage. Both of these should be listed on the manufacturer's data sheet. Also, is this a silicon-based panel or some other material? The reason I ask is that silicon cells typically run at about 0.5V per cell so 36 in series would have an open cell voltage more like 18V than 21.5V. Its not impossible of course.
Kind regards,
David

On 3/8/2011 05:21, lvguangzhao wrote:

Hello, David, thank you very much for your reply.Attached are my project.Following are the parameters that I am trying to enter into the EES.

Number of cells in series within a module = 36

Open circuit voltage at reference conditions = 21.5 V

Short ciecuit current at reference conditions = 7.55 amp

Max. power voltage at reference conditions = 17.5 V

Max. power current at reference conditions = 6.86 amp

Module area = 0.92m2

I also have tryed to change some parameters in EXAMPLE.VAR in the folder of Type194 ,but I didn't know what to correct.

Thank you in advance !

2011-03-08

Guangzhao Lv

发件人： David BRADLEY

发送时间： 2011-03-02 23:04:11

收件人： lvguangzhao

抄送： trnsys-users

主题： Re: [TRNSYS-users] Questions about Type 194 and Type 665
Guangzhao,
Could you please send me an email containing the parameters that you are entering into the EES plugin for Type194? I have run into some similar problems in the past and may be able to help solve this one. It sounds from what you describe as though the problem is in launching the plugin, not actually in having the plugin solve so perhaps you only need to send me the Trnsys Studio project that causes the error.
Kind regards,
David

On 3/1/2011 00:47, lvguangzhao wrote:

Hello, I have two questions to ask.

1. I encountered a problem when I was trying to change the parameters of Type 194 using EES. A error "Missing user function or improper format for Call statement" was showed after I clicked on the icon on the parameter card. What's wrong with it?

2. A convertible frequency air source heat pump is needed in my model but I can't find one in TRNSYS. Is Type 665 Ok?

2011-03-01

Guangzhao Lv
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-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley@tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com