[TRNSYS-users] Type58 quality of steam

[thornton at tess-inc.com]

On 2021-08-25 08:33, Tushar Sharma via TRNSYS-users wrote:

> I have a question with regards to the output "Quality of the state" of
> Type58 as can be seen below. I am using steam (Prameter1 value = 718)
> for this model and the ideal value should be between 0 (water) and 1
> (dry saturated steam). But what I get is strange values ranging from
> -800 to +999.

The quality of steam ranges from 0 to 1 for steam in the saturation 
region as you suggest.  However for sub-cooled steam, or superheated 
steam, the quality of the steam isn't defined.  So a value less than 
zero signifies subcooled steam and a value greater than 1 signifies 
superheated steam.  The magnitude of the results above 1 or below zero 
is irrelevant.

Jeff

-- 
Jeff W. Thornton
President
Thermal Energy System Specialists LLC
3 N. Pinckney Street, Suite 202
Madison WI 53703 USA
(608) 274-2577
www.tess-inc.com