Calculate the coefficient of performance of this refrigeration cycle. If the cycle is absorbing 1130 kJ/min at 270 K, how many kJ of work is required per second ?

A(n) ______well draws water from the top of thewater column, circulates it through the heat pump, and then returns the water to the bottom of the water column.

Define net refrigeration effect as it applies to the refrigeration cycle.

What are the approximate temperature ranges tor low-, medium-, and high-temperature refrigeration applications?

A Carnot refrigeration cycle absorbs heat at 270 K and rejects it at 300 K. 1. Calculate the coefficient of performance of this refrigeration cycle. 2. If the cycle is absorbing 1130 kJ/min at 270 K, how many kJ of work is required per second ? 3. If the Carnot heat pump operates between the same temperatures as the abov refrigeration cycle, what is the coefficient of performance ? 4. How many kJ/min will the heat pump deliver at 300 K if it absorbs 1130 kJ/min at 270 K

The values of a vapor compression refrigeration cycle were given below. Calculate the values ofrefrigerant flow rate, refrigeration capacity, and the COP of the system.T1= Evaporator water outlet = 10 °CT2= Evaporator water inlet = 16 °CT3= Condenser water inlet = 16 °CT4= Condenser water outlet = 22°CCooling water flow rate = 1.5 L/minHeating water flow rate = 1.5 L/minEnthalpy of R134a in evaporator outlet = 305 kj/kg,Enthalpy of R134a in evaporator inlet =115 kj/kgEnthalpy of R134a in condenser inlet =327 kj/kg

A Carnot refrigeration cycle absorbs heat at 250 K and rejects it at 300 K Calculate- i) the coefficient of performance of this refrigeration cycle. ii) If the cycle is absorbing 1130 kJ/min at 270 K. how many kJ of work is required per second iii) If the Carnot heat pump operates between the same temperatures as the above refrigeration cycle, what is the coefficient of performance ?

4. The values of a vapor compression refrigeration cycle were given below. Calculate the values of refrigerant flow rate, refrigeration capacity, and the COP of the system. T1= Evaporator water outlet = 10 °C T2= Evaporator water inlet = 16 °C T3= Condenser water inlet = 16 °C T4= Condenser water outlet = 22°C Cooling water flow rate = 1.5 L/min Heating water flow rate = 1.5 L/min Enthalpy of R134a in evaporator outlet = 305 kj/kg, Enthalpy of R134a in evaporator inlet =115 kj/kg Enthalpy of R134a in condenser inlet =327 kj/kg

1. The heat absorption and rejection temperatures of a Carnot refrigeration cycle are -8°C and 36°C, respectively. The rate of heat absorption is 28 kW.A. Calculate the COP of the refrigeration cycle. B. Calculate the power input to the cycle in kW. C. If a Carnot heat pump operating between the same temperatures absorb 18 kW from the cold region, calculate the rate of heat supply to the hot region in kW. D. Calculate the COP of the heat pump.

A two stage refrigeration cycle is shown in fig. B. The working fluid is refrigerant 134a. The interchanger is a heat exchanger where the heat absorbed by the refrigerant in the higher-temperature cycle 2 serves to condense the refrigerant in the lower-temperature cycle 1. The refrigerant in cycle 1/2 leaves the interchanger as saturated liquid/vapor. The corresponding temperatures of saturation are 5.12 ℉ / 0 ℉. The saturation temperature in the evaporator is -40 ℉. The pressure in the condenser is 60 psia. The compressor in cycle 1 operates isentropically. The compressor in cycle 2 has an isentropic efficiency of 80%. (a) Sketch the cycle in a T-s diagram and determine the enthalpy at each point of the cycle. (b) Calculate the ratio of the mass flow rates of the refrigerant in the two cycles. (c) Calculate the coefficient of performance of this refrigeration cycle.