GeothermalProbs - cost for the underground cooling loop for...

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1 ME 417 Design of Alternative Energy Systems Geothermal Problems 1. A hot geothermal source has a hot water at 65 ° C with a flow rate of 0.05 kg/s. Determine the flow rate of R-134a that can be boiled by this source. 2. A vapor compression refrigeration system operating between –8 ° C and 30 ° C is to be replaced with an underground cooling loop. Both systems are to supply a cooling load of 2 kW and 75 cooling days. Determine the break even capital
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Unformatted text preview: cost for the underground cooling loop for an interest rate of 12% and a lifetime of 25 years. 3. Consider an underground heat pump that serves a building with a heating load of 6.5 kW. Determine the volume of earth (in cubic yards) that must participate in the heating for a cooling period of 150 days and an allowable ground temperature drop of 15 C. The properties of the earth are estimated to be c P = 0.8 kJ/(kg K) = 1520 kg/m 3...
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