Chapter 8, Problem 8.11P

From the given data, if refrigerant circulation rate is 0.025kg/s, find the refrigerant effect of the ideal vapour compression cycle.

True or false Heat is transferred to a system by either a cheap commercially available air-sourced heat pump with coefficient of performance of just 1.5, or an expensive 100% efficient electrical resistance heater. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is minimum when heat is added by the cheap commercial heat pump.   Heat is transferred to a system by either a cheap commercially available air-sourced heat pump with coefficient of performance of just 1.5, or an expensive 100% efficient isothermal heat source. The loss of Carnot Work Potential (Exergy destruction, or T0Sloss term) is minimum when heat is added by the isothermal heat source.

Refrigerant 134a is used as the working fluid in a refrigerator, and it operates in an ideal vapor compression refrigeration cycle, if the refrigerant enters the evaporator at -4 ° C and enters the condenser at 1200 kPa. If the mass flow of the refrigerant is 180 kg / h, determine a) the Ts and Ph diagrams of the cycle with all the information b) the rate of heat removal from the refrigerated space and the power input to the compressor, and c) the COP Of fridge

4. A Camot heat pump with refrigerant-134a as the working fluid is used to keep a room at 78*F by absorbing heat from geothermal liquid water that enters the evaporator at 60°C at a rate of 3.78 kg/min and leaves (still as a liquid) at 40°c The refrigerant, meanwhile, enters the evaporator at 12°C with a quality of 25% and leaves at the same pressure as saturated vapor. If the compressor consumes 1.8 kW of power, detemine (a) the mass flow rate (in kg/s) of the refrigerant at the evaporator, (b) the rate of heat (in kW) supplied to maintain the room temperature, and (c) the COP. Also, what is (d) the ambient temperature at the outside, in "C, that necessitates the use of the heat pump? Assume steam properties to compute for the thermodynamic conditions of geothermal water. Outside Inside Expansion Ve Condenser Evaporator Compresser

Determine: a)Work of the compressor(kW) b)COP of the cycle

I need the answer as soon as possible

What is Carnot cycle, Rankine cycle and Refrigeration cycle?

A steam power-plant, with a power of "Wnet", is working according to the Rankine cycle. Steam enters the system in "P3"MPa pressure and 500 C degree temperature, and cooled down in condenser at 10 kPa pressure. Take Source temperature as "TH", and sink temperature 290 K. According to the information given. P3 = 6 MPa, %3D Wnet = 201 MW, TH = 1600 K Determine: 1.Heat generated (MW)(Not Heat given) 2.Pump entrophy generation (MW/K) 3.Combustion chamber entrophy generation (MW/K) 4.Turbine entrophy generation (MW/K)

Only solve last 2 parts ok Problem 2 – Heat Pump Thermodynamic Analysis Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 50°C at a rate of 35 L/min and leaves at 750 kPa subcooled by 3°C. The refrigerant enters the compressor at 200 kPa superheated by 3°C. Neglecting changes in kinetic and potential energy and any stray heat transfer, please answer the following.a. Create a schematic of the cycle, use the same numbers used in your textbook for the inlet and exit states of each device, and include the energy exchanges between the cycle devices and the surroundings.b. Sketch the cycle processes on a T-s diagram.c. Determine the isentropic efficiency of the compressor.d. Compute the rate of heat supplied to the heated room.e. Determine the COP of the heat pump.