Find the rate of waste heat rejection kjhr and the number

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Reference no: EM13623933

A schematic must show TH, TC, QH, QC, WCYCLE. Always show the hot reservoir at the top & cold reservoir at the bottom. Use arrows to show directions and indicate numeric values that are given.

(A) An electrical window air conditioner with a cooling capacity of of 8000 kJ/hr draws 6.00 amps of electrical current at 120 volts. The electricity price is $0.15/kwhr. Find the cycle coefficient of performance, the rate of waste heat rejection (kJ/hr) and the electrical cost to operate the unit steadily for 1 day ($/day). Include a complete schematic diagram in your write-up clearly showing hot (top) & cold (bottom) regions and arrows showing all energy exchanges.

(B) The 90 kW of electrical power needed for an emergency field hospital in Haiti is to be generated by a diesel fueled engine-generator set. The thermal efficiency is 27%. The fuel tank holds 10 barrels of diesel fuel (42 gallon/barrel). Combustion of one gallon of diesel fuel releases 130,000 kJ of energy. Find the rate of waste heat rejection (kJ/hr) and the number of hours the unit can operate steadily on one full tank of fuel.

Include a complete schematic diagram in your write-up clearly showing hot (top) & cold (bottom) regions and arrows showing all energy exchanges.

Reference no: EM13623933

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