[TRNSYS-users] Connect Type 1231 with Type 56

[Karol Bandurski]

Dear Enyuan,

 

This table is type 1231 description:

TESS Models -> Documentation -> 06-HVACLibraryMathematicalReference

 

Regards,

Karol

 

From: Enyuan Hu [mailto:bearcharge at gmail.com] 
Sent: Wednesday, August 14, 2013 8:34 PM
To: trnsys-users
Subject: [TRNSYS-users] Connect Type 1231 with Type 56

 

Dear all,

 

I'm sorry to ask this kind of question again as this topic has been asked
before. But I have some new questions and am looking for clarifications.

 

1. According to 'HVACLibraryMathematicalReference', different types of
hydronic heat-distributing units have different n values in the equation

 

q = c (Ts - Ta) ^n

 

and there is a table giving these specific n values for different cases. In
the table, there is 'ceiling heating' and 'floor heating' option, is this
saying that flooring heating/cooling can be modeled using Type 1231?

 

2. It's been answered in the mailist history that type 1231 is connected to
type 56 through internal gains. I'm a little puzzled that the air
temperature is a defined number instead of being variant as it should be.
I'm sorry that I didn't read through ASHRAE 2004 book on which type 1231 is
based and maybe that's why I have confusions.

 

thanks for the answer!

 

Enyuan

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