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Question 10 5 pts A manufacturer believes that its heat pump has a COP of 12.0...
(12 pts) A heat pump operating on a cyclic process receives heat from a reservoir at...
(12 pts) A heat pump operating on a cyclic process receives heat from a reservoir at 500°C and rejects the waste heat at a rate of 30 kW to the ambient air at 300 K. If the work output of the engine is 45 kw, determine if the cycle is possible, and if the cycle is reversible. Explain with calculations. Show calculations using both efficiency (Method 1) and Entropy generation (Method 2) analysis.
A heat pump using refrigerant-134a as a refrigerant operates its condenser at 800 kPa and its...
A heat pump using refrigerant-134a as a refrigerant operates its condenser at 800 kPa and its evaporator at −1.25°C. It operates on the ideal vapor-compression refrigeration cycle. What is the COP of the heat pump for the case when the vapor entering the compressor is superheated by 2°C and for the case when the compressor has no irreversibilities? The COP of the heat pump when the compressor has no irreversibilities is____. The COP of the heat pump when the vapor...
QUESTION 1 a) Company A designed a heat pump to supply heat into a library in...
QUESTION 1 a) Company A designed a heat pump to supply heat into a library in Canada during winter, so that the library can maintain to be at 20°C. The heat pump utilizes 12,000 L/min of Refrigerant-134a as the working fluid and absorb heat from an industrial water stream. The water stream enters the evaporator at 50°C and exits at 25°C. The refrigerant enters the evaporator at 10°C with 90% moisture content and leaves at 20°C. There is no pressure...
QUESTION 1 a) Company A designed a heat pump to supply heat into a library in...
QUESTION 1 a) Company A designed a heat pump to supply heat into a library in Canada during winter, so that the library can maintain to be at 20°C. The heat pump utilizes 12,000 L/min of Refrigerant-134a as the working fluid and absorb heat from an industrial water stream. The water stream enters the evaporator at 50°C and exits at 25°C. The refrigerant enters the evaporator at 10°C with 90% moisture content and leaves at 20°C. There is no pressure...
Thermodynamics A steam power plant operates with high pressure oft 4 MPa and hasleel receiving heat from a 700°C reservoir. The ambient air at 20°C provides cooling to maintain the water/vapor m...
Thermodynamics
A steam power plant operates with high pressure oft 4 MPa and hasleel receiving heat from a 700°C reservoir. The ambient air at 20°C provides cooling to maintain the water/vapor mixture in the condenser at 60°C. All components are ideal i.e., reversible) except the turbine which has an efficiency 92% of a reversible, isentropic process. Other than the irreversibility of the turbine, the power plant can be considered as a Rankine cycle. Determine the following quantities in the suggested...
Problem 3. Rankine Cycle (90 points) A steam power plant operates with high pressure of 4 MPa and has a boiler exit at 600°C receiving heat from a 700° C reservoir. The ambient air at 20°C provid...
Problem 3. Rankine Cycle (90 points) A steam power plant operates with high pressure of 4 MPa and has a boiler exit at 600°C receiving heat from a 700° C reservoir. The ambient air at 20°C provides cooling to maintain the water/vapor mixture in the condenser at 60°C. All components are ideal (i.e., reversible) except the turbine which has an efficiency 92% ofa reversible isentropic process. Other than the irreversibility of the turbine, the power plant can be considered as...
Q1 a) Company A designed a heat pump to supply heat into a library in Canada during...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
termo QUESTION 4 (a) Derive and expression for the coefficient of performance (COP) of a completely...
termo
QUESTION 4 (a) Derive and expression for the coefficient of performance (COP) of a completely reversible heat pump in terms of the thermal energy reservoir, high temperatures T, and low temperature 1, respectively. Draw a diagram that support the COP derivation. [7 marks] (b) A Heat Pump (HP) is to be used for heating a bouse in winter as illustrated in Figure Q4(b). The house is to be maintained at 26°C at all times. When the temperature outdoors drop...
QUESTION 1 A heat pump with refrigerant-134a as the working fluid is used to keep a...
QUESTION 1 A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by absorbing heat from geothermal water that enters the evaporator at 50°C at a rate of 0.065 kg/s and leaves at 40°C. The refrigerant enters the evaporator at 20°C with a quality of 23 percent and leaves at the inlet pressure as saturated vapor. The refrigerant loses 300 W of heat to the surroundings as it flows through the compressor and...
A heat pump using R134a refrigerant is used to hold a medium at 23c. In the...
A heat pump using R134a refrigerant is used to hold a medium at 23c. In the evaporator part, geothermal water (cp = 4.18) with 0.0045 flow rate entering at 60c and leaving at 45c is used. r134a enters the evaporator at 20c, 15% dryness and exits as saturated steam at the same pressure. Since the compressor consumes 1.3 kW of power;evaporator pressure and mass a) evaporator pressure and mass flow of R134a b) heating load and COP value c) Calculate...
(12 pts) A heat pump operating on a cyclic process receives heat from a reservoir at 500°C and rejects the waste heat at a rate of 30 kW to the ambient air at 300 K. If the work output of the engine is 45 kw, determine if the cycle is possible, and if the cycle is reversible. Explain with calculations. Show calculations using both efficiency (Method 1) and Entropy generation (Method 2) analysis.
QUESTION 1 a) Company A designed a heat pump to supply heat into a library in Canada during winter, so that the library can maintain to be at 20°C. The heat pump utilizes 12,000 L/min of Refrigerant-134a as the working fluid and absorb heat from an industrial water stream. The water stream enters the evaporator at 50°C and exits at 25°C. The refrigerant enters the evaporator at 10°C with 90% moisture content and leaves at 20°C. There is no pressure...
QUESTION 1 a) Company A designed a heat pump to supply heat into a library in Canada during winter, so that the library can maintain to be at 20°C. The heat pump utilizes 12,000 L/min of Refrigerant-134a as the working fluid and absorb heat from an industrial water stream. The water stream enters the evaporator at 50°C and exits at 25°C. The refrigerant enters the evaporator at 10°C with 90% moisture content and leaves at 20°C. There is no pressure...
Thermodynamics
A steam power plant operates with high pressure oft 4 MPa and hasleel receiving heat from a 700°C reservoir. The ambient air at 20°C provides cooling to maintain the water/vapor mixture in the condenser at 60°C. All components are ideal i.e., reversible) except the turbine which has an efficiency 92% of a reversible, isentropic process. Other than the irreversibility of the turbine, the power plant can be considered as a Rankine cycle. Determine the following quantities in the suggested...
Problem 3. Rankine Cycle (90 points) A steam power plant operates with high pressure of 4 MPa and has a boiler exit at 600°C receiving heat from a 700° C reservoir. The ambient air at 20°C provides cooling to maintain the water/vapor mixture in the condenser at 60°C. All components are ideal (i.e., reversible) except the turbine which has an efficiency 92% ofa reversible isentropic process. Other than the irreversibility of the turbine, the power plant can be considered as...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
termo
QUESTION 4 (a) Derive and expression for the coefficient of performance (COP) of a completely reversible heat pump in terms of the thermal energy reservoir, high temperatures T, and low temperature 1, respectively. Draw a diagram that support the COP derivation. [7 marks] (b) A Heat Pump (HP) is to be used for heating a bouse in winter as illustrated in Figure Q4(b). The house is to be maintained at 26°C at all times. When the temperature outdoors drop...
QUESTION 1 A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by absorbing heat from geothermal water that enters the evaporator at 50°C at a rate of 0.065 kg/s and leaves at 40°C. The refrigerant enters the evaporator at 20°C with a quality of 23 percent and leaves at the inlet pressure as saturated vapor. The refrigerant loses 300 W of heat to the surroundings as it flows through the compressor and...
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