Unformatted text preview: The temperature at entrance of the evaporator was 275.85K and at the exit was 278.59K. It was a small increase and that implies it doesn’t absorb that much heat but the mass flow was high enough to cause effective cooling. If the pressure was 20% higher, actual values show in figure XXXXX, then the h f would increase from 66.6 kj/kg to 72.10 kj/kg. That would make increase the cooling rate of the evaporator because that force the change in enthalpy to be greater. Q = m(h e - h i ) 3. Pressure Error Check absolute(measured) absolute(+20%) Pmin 343.6 412.36 T(K) *C T(K) *C *C Temp 275.22 2.22 281 8.00 2.94 Figure XXXXX T shows absolute pressure and as well as 20% increase and how it affects the Temperature....
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- Thermodynamics, Fundamental physics concepts, Saturation Temperature