Re: [TRNSYS-users] Compressor Work Or Power Comparison Between Day and Night (Shomaz Haque via TRNSYS-users)

Well it depends on the fluid inlet temp, greater is the inlet temp of fluid to compressor, more power will be req by the compressor and vice versa. U should check the fluid inlet temp variations during a whole day.

Best regards

From: via TRNSYS-users <trnsys-users@lists.onebuilding.org>
To: trnsys-users@lists.onebuilding.org
Sent: Saturday, 11 February 2017, 17:03
Subject: TRNSYS-users Digest, Vol 146, Issue 16

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Today's Topics:

1. Compressor Work Or Power Comparison Between Day and    Night
(Shomaz Haque via TRNSYS-users)
2. TRNSYS - EES COUPLING (Mohamed Kaheal via TRNSYS-users)
3. variable speed fan control (ahmad abbasian via TRNSYS-users)
4. variable speed fan control (ahmad abbasian via TRNSYS-users)

Dear all,

Hello. Hope all are well. I am simulating a concentrated solar power (CSP) using supercritical CO2 in Brayton cycle. My question is the compressor power more (does the compressor work more) during the night or during the day (when there is sunlight)? Would like to confirm this. Hope to hear from someone soon. Thanks.

Regards,

Shomaz ul Haq | MS Graduate Researcher

U.S. - Pakistan Center for Advanced Studies in Energy (USPCAS-E) | USAID Grantee

National University of Science and Technology (NUST) | Islamabad

T: +92.3234041087 | E: Shomazu lhaq@gmail.com

hello,

I am using ees with TRNSYS. But I could not keep the imported data from TRNSYS as an array in ees, could you please help me in this issue

thank u very much

Mohamed

Dear All

I'm going to control a cooling system such as my building temperature does not rise above 25 C . In case of using single speed fan , I can use a thermostat to sense temperature and turn on the fan whenever it is above 25 C . using variable speed fan results in lower energy consumption if it is controlled properly. If I use a variable speed fan, could you explain me how it should be controlled? when it should work at part-load and when itworks at full-load and how I can implement it in TRNSYS?

Thank you

..............................................................................................

Ahmad abbasianzadeh

Solar energy Researcher