Nowadays, I carry out frosting investigation on fin and tube evaporator. I want to learn my evaporator outlet relative humidity and temperature at outlet of fan. Normally, air side thermal performance is calculated via electrical load because my lab is energy balanced calorimetric room. However, in order to identify the frost mass occurring at per time, I have to know outlet values. Is it correct to do measurement at this area or is it better measuring via a sample reservoir, which takes the air from 25 points and measures this sample. Thanks a lot.
If I've been found out correctly you need to determine outlet conditions of air side leaving a fan with a particular geometry.
It is recommended to use HTRI air cooler design / rating sophisticated program to obtain wanted data
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