[TRNSYS-users] Type 2b Issue

To: "TRNSYS users mailing list at the Solar Energy Lab, UW-Madison" <trnsys-users@cae.wisc.edu>

Subject: [TRNSYS-users] Type 2b Issue

From: Adeel Waqas <adeelwaqas@gmail.com>

Date: Fri, 25 Oct 2013 14:33:55 +0500

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Reply-to: "TRNSYS users mailing list at the Solar Energy Lab, UW-Madison" <trnsys-users@cae.wisc.edu>

Dear Trnsys users

I facing problem while using controller Type 2b between solar water heater and storage tank. i have spent several hours in understanding its behavior but still i am confused.

Issue is i have connected the "upper Input temperature" as collector outlet and "lower Input temperature" as outlet from storage tank heat exchanger.

I have set the deltaT_H=10 and delta T_L= 2 as i want that controller switch keep the pump on between this two limits.

But when u exported the TRNSyS data to excel to check the result it is noticed that sometimes pump is off even the above mentioned limit (deltaT_H=10 and delta T_L= 2) is satisfied. I am attaching the excel file and issue is highlighted in this file (sheet 1). Also TRNSYS file is attached

I will be thanks for the help and the suggestion and to know where I am wrong.

Regards

Attachment: Project 1.xlsx
Description: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Attachment: Project_Controller.tpf
Description: Binary data

Follow-Ups:

Re: [TRNSYS-users] Type 2b Issue
- From: Jeff Thornton <thornton@tess-inc.com>