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Re: [TRNSYS-users] (no subject)

To: "TRNSYS users mailing list at OneBuilding.org" <trnsys-users@lists.onebuilding.org>
Subject: Re: [TRNSYS-users] (no subject)
From: David BRADLEY <d.bradley@tess-inc.com>
Date: Thu, 14 Mar 2019 14:13:41 -0500
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Ahlem,

The value that Type5 is looking for is sometimes referred to as the heat exchanger UA. You can look in a heat transfer text book or online for the methods used to compute it. Keep in mind that UA has units of kJ/h.K. The actual amount of heat transferred by the exchanger varies with inlet temperature but the heat transfer coefficient does not.

kind regards,

David

On 03/12/2019 14:58, berkane ahlem via TRNSYS-users wrote:

Hello sirs,

How can i calculate the "Overall heat transfer coefficient of exchanger" of type 5b, when the inlet temperature of hot and cold side are varied with time .

best regards,
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-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
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

References:
- [TRNSYS-users] (no subject)
  - From: berkane ahlem <jinan.berkane@gmail.com>

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