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Engineering, 25.03.2020 01:59 tyrique86

A water-cooled condenser in a large refrigeration system uses R-134a as its refrigerant fluid. The refrigerant enters the condenser at 1.0 MPa and 60 deg, at a rate of 0.2 kg/s, and exits as a liquid at 0.95 MPa and 35 degC. Cooling water enters the condenser at 10 degC and exits at 20 deg Create a schematic representation of the condenser and draw the boundary of the system needed to answer the next questions. Include the mass and energy interactions across the boundary. h. Identity (sketch) the two states of the refrigerant fluid (entrance and exit) on both a P v diagram and at v diagram Create a governing equation for this condenser from the general energy balance equation and cross-out any terms that are likely to be irrelevant or have little contribution in the equation 1. Determine the volumetric flow rate at which cooling water flows through the condenser k list the assumptions and approximations that were needed to solve this problem. Revise your control volume so that it just surrounds the refrigerant and determine the heat transfer rate from the R-134a to/from the water. Evaluate whether heat is flowing from the refrigerant to the water or vice versa.

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A water-cooled condenser in a large refrigeration system uses R-134a as its refrigerant fluid. The r...
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