[TRNSYS-users] Is tank type 4 or type 158, are pressurize tank????

[David BRADLEY]

Virk,

  The Type4 and Typ158 tank models assume that the liquid properties 
(specific heat, density, thermal conductivity, etc.) are constant. You 
can drive their temperatures above 100C and they will not boil so yes, 
in a way they model pressurized tanks but keep in mind that you can 
drive the temperature of those tanks up as high as you want and they 
still won't boil. Keep an eye on their temperature and make sure it does 
not go so high that the constant properties assumption is no longer 
appropriate.

kind regards,

  David



On 03/11/2020 07:01, MEHMOOD Sajid wrote:
> Hi,
>
> I have question regarding absorption chiller tank. Data file of type 
> 107 (single effect absorption chiller) is for driving temperature 110 
> celcius. If we operate with this temperature and if we donot 
> pressurize the water then state of water will be steam. Is type 107 is 
> then steam operated absorption chiller? or hot water operated 
> absorption chiller???  Second, there is no parameter or input that 
> tells about pressurization in tank (either tank type 4 or type 158). 
> How we can store water without pressurization at above 100 celcius 
> (becuase it boils at 100)?
>
> can some one please tell about this.
>
> thanks
>
> Best Regards,
> Virk
> The University of Edinburgh is a charitable body, registered in 
> Scotland, with registration number SC005336. 

-- 
***************************
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 at tess-inc.com

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

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