Saturated steam cooled by a HEX
Saturated steam cooled by a HEX
(OP)
120 Deg C saturated steam (198.53 Kpa(a))is cooled by a heat exchanger. The outlet condition is 80 Deg C and 175 kPa(a) (under-saturated from steam table). What is the physical process of the steam in the HEX? Is it from 120 C steam to 120 C water, then from 120 C water to 80 C water? Or anything else? I need to calculate the HEX duty, and I need to identify the physical process first. Please help. Thanks.





RE: Saturated steam cooled by a HEX
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RE: Saturated steam cooled by a HEX
In short: 2706.0-334.9 = 2371.1 kJ/kg.
RE: Saturated steam cooled by a HEX
You can draw five basic steam diagrams which are: T-s,T-v,P-v,P-h,H-s. From anyone of these diagrams, you can determine possible routes along constant temperature, Pressure, specific volume, entropy and even enthalpy. Why along these constant variable? because many of the thermodynamics relationships are based on maintaining at least one of these variables constant.
RE: Saturated steam cooled by a HEX
RE: Saturated steam cooled by a HEX