1a) A freezer using a Carnot refrigeration cycle has an interior temperature of ?5 oC. In...
1a) A freezer using a Carnot refrigeration cycle has an interior temperature of ?5 oC. In the summer it rejects heat to a room at 37 oC. If 20 kW is the heat removal rate from the freezer, what is the COP of the cycle?
1b) For the freezer described in problem 1, what is the power, in kW, required for the cycle?
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1a) A freezer using a Carnot refrigeration
cycle has an interior temperature of ?5 oC. In...
The Interior of a freezer, operating with an ideal Carnot cycle, is at a constant of...
The Interior of a freezer, operating with an ideal Carnot cycle, is at a constant of -25.0 C, and the room the freezer is in is at a temperature of 25.0 C.The freezer convert 0.636 kg of water initially at 20.0 C into ice at -25.0 C. How much input work (in kJ) is required for this process to occur? ( The specific heat of ice is 2090 J/(kg*C), the specific heat of liquid water is 4186 J/(kg*C), and latent...
A freezer is designed, based on vapor-compression refrigeration cycle. The designed conditions are: R-134a as refrigerant,...
A freezer is designed, based on vapor-compression refrigeration cycle. The designed conditions are: R-134a as refrigerant, with a cooling capacity of 500 kW; compressor of 70% efficiency, with a superheat of 10°C before compressor inlet; operation temperature of -10°C inside the refrigerator, with the environment temperature of 25°C outside the refrigerator; Determine the pressure range of refrigeration cycle if a 10°C difference is required to ensure effective heat transfer of evaporator and condenser; Plot the refrigeration cycle on P-h diagram;...
A 20-ton industrial refrigeration system is used to maintain a freezer room at 20oF. The system...
A 20-ton industrial refrigeration system is used to maintain a freezer room at 20oF. The system uses R-22 refrigerant with evaporating temperature of 10 oF and a condensing temperature of 100oF. The refrigerant enters the compressor at 20 oF and exits the condenser at 85oF. Sketch the cycle on a p-h diagram and determine: a) The Carnot COP b) The compressor suction and discharge pressures in psig c) The refrigerant mass flow rate, lbs./h d) The specific volume of the...
A 20-ton industrial refrigeration system is used to maintain a freezer room at 20oF. The system...
A 20-ton industrial refrigeration system is used to maintain a freezer room at 20oF. The system uses R-22 refrigerant with evaporating temperature of 10oF and a condensing temperature of 100oF. The refrigerant enters the compressor at 20oF and exits the condenser at 85oF. Sketch the cycle on a p-h diagram and determine: a) The Carnot COP b) The compressor suction and discharge pressures in psig c) The refrigerant mass flow rate, lbs./h d) The specific volume of the refrigerant at...
(a) A freezer maintains an interior temperature inside of -22.0°C and has a coefficient of performance of 3.00. The fre...
(a) A freezer maintains an interior temperature inside of -22.0°C and has a coefficient of performance of 3.00. The freezer sits a room with a temperature of 25.0°C. The freezer is able to etely canvert 090 J/(9 °C), and the latent heat of & one minute. What input power (in watts) does the freezer require? (The specific heat of liquid water is 4.186 J/(g °C), liquid water at 25.0-tolce specific he ice is of water is 33 J/g.) W (b)...
The given answer is (d) (i) 15.18 kW (ii) 3.08 However, I don't know how can...
The given answer is (d) (i) 15.18 kW (ii)
3.08
However, I don't know how can I solve this question.
Could anyone please help me?
Thank you
d) A freezer maintains a temperature of -18°C inside the cabinet, while the room temperature is at 24°C. If the electrical power consumed by the refrigeration unit is 2.5 kW determine: (i) The maximum possible rate of heat removal from the cabinet at this power input. (ii) The COP of the refrigeration unit...
A freezer maintains an interior temperature inside of −24.0°C and has a coefficient of performance of...
A freezer maintains an interior temperature inside of −24.0°C and has a coefficient of performance of 3.00. The freezer sits in a room with a temperature of 19.0°C. The freezer is able to completely convert 26.0 g of liquid water at 19.0°C to ice at −24.0°C in one minute. What input power (in watts) does the freezer require? (The specific heat of liquid water is 4.186 J/(g · °C), the specific heat of ice is 2.090 J/(g · °C), and...
(a) A freezer maintains an interior temperature inside of −20.0°C and has a coefficient of performance...
(a) A freezer maintains an interior temperature inside of −20.0°C and has a coefficient of performance of 3.00. The freezer sits in a room with a temperature of 15.0°C. The freezer is able to completely convert 36.0 g of liquid water at 15.0°C to ice at −20.0°C in one minute. What input power (in watts) does the freezer require? (The specific heat of liquid water is 4.186 J/(g · °C), the specific heat of ice is 2.090 J/(g · °C),...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating at a rate of 15 kW to maintain a building at 20 °C year-round. During the heating mode in the winter, the outside temperature is 5 °C. It is also used for cooling in the summer when outside temperature is 34 °C. Saturated vapor at 2.4 bar leaves the evaporator and superheated vapor at 8 bar leaves the compressor. There is no significant heat...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating at a rate of 15 kW to maintain a building at 20 °C year-round. During the heating mode in the winter, the outside temperature is 5 °C. It is also used for cooling in the summer when outside temperature is 34 °C. Saturated vapor at 2.4 bar leaves the evaporator and superheated vapor at 8 bar leaves the compressor. There is no significant heat...
(a) A freezer maintains an interior temperature inside of -22.0°C and has a coefficient of performance of 3.00. The freezer sits a room with a temperature of 25.0°C. The freezer is able to etely canvert 090 J/(9 °C), and the latent heat of & one minute. What input power (in watts) does the freezer require? (The specific heat of liquid water is 4.186 J/(g °C), liquid water at 25.0-tolce specific he ice is of water is 33 J/g.) W (b)...
The given answer is (d) (i) 15.18 kW (ii)
3.08
However, I don't know how can I solve this question.
Could anyone please help me?
Thank you
d) A freezer maintains a temperature of -18°C inside the cabinet, while the room temperature is at 24°C. If the electrical power consumed by the refrigeration unit is 2.5 kW determine: (i) The maximum possible rate of heat removal from the cabinet at this power input. (ii) The COP of the refrigeration unit...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating at a rate of 15 kW to maintain a building at 20 °C year-round. During the heating mode in the winter, the outside temperature is 5 °C. It is also used for cooling in the summer when outside temperature is 34 °C. Saturated vapor at 2.4 bar leaves the evaporator and superheated vapor at 8 bar leaves the compressor. There is no significant heat...
In a vapor-compression refrigeration heat pump cycle with Refrigerant 134a as the working fluid provides heating at a rate of 15 kW to maintain a building at 20 °C year-round. During the heating mode in the winter, the outside temperature is 5 °C. It is also used for cooling in the summer when outside temperature is 34 °C. Saturated vapor at 2.4 bar leaves the evaporator and superheated vapor at 8 bar leaves the compressor. There is no significant heat...
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