Determine the thermal efficiency of the cycle
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A refrigerator in my 20oC kitchen uses R-134a, and I want to make ice cubes at -5oC. What is the minimum high P and the maximum low P it can use?
In what direction do these change: turbine work, pump work and turbine exit T or x?
Calculate the 3-month moving average forecast for the demand in April. For full credit, please include the formula, at least one step of calculation.
A heat pump uses carbon dioxide, and it must condense at a minimum of 22oC and receives energy. What restrictions does that place on the operating pressures?
Saturated vapor leaves the solar collector at 1000 kPa, and the condenser pressure is 10 kPa. Determine the thermal efficiency of this cycle.
Find the plant efficiency and the efficiency of a Carnot cycle with the same temperatures.
A Rankine cycle with R-410a has the boiler at 3 MPa superheating to 180oC, and the condenser operates. Find all four energy transfers and the cycle efficiency.
For a turbine power output of 8 MW, find the work and heat transfer in all components and the cycle efficiency.
Find the temperature out of the boiler/super heater so that the turbine exit temperature is 60oC, and find the overall cycle efficiency.
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