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A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.?
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A SSS vapour compression refrigeration system based on refrigerant R 1...
SSS Vapour Compression Refrigeration System with R134a Refrigerant
Coefficient of Performance (COP)
The COP of a refrigeration system is defined as the ratio of heat removed from the evaporator to the work input to the compressor. The COP of the SSS vapour compression refrigeration system can be calculated using the following formula:
COP = (Heat Removed from Evaporator) / (Work Input to Compressor)
The heat removed from the evaporator can be calculated using the following formula:
Qevap = m * h2 - m * h1
Where m is the mass flow rate of the refrigerant, h2 is the enthalpy of the refrigerant at the evaporator outlet, and h1 is the enthalpy of the refrigerant at the evaporator inlet.
The work input to the compressor can be calculated using the following formula:
Wcomp = m * (h2 - h3)
Where h3 is the enthalpy of the refrigerant at the compressor inlet.
Using the above formulas and the given parameters, the COP of the system can be calculated as follows:
COP = Qevap / Wcomp = (m * (h2 - h1)) / (m * (h2 - h3))
Work Input to Compressor
The work input to the compressor can be calculated using the formula mentioned above. Using the given parameters and the formula, the work input to the compressor can be calculated.
Area of Superheat Horn and Throttling Loss
The superheat horn is a region in the refrigeration cycle where the refrigerant is superheated before entering the compressor. The additional work required due to superheat can be calculated using the following formula:
Wsh = m * (h3 - h4)
Where h4 is the enthalpy of the refrigerant at the evaporator inlet.
The throttling loss is the additional work input required due to throttling in place of isentropic expansion. Assuming the isobar at condenser pressure to coincide with the saturated liquid line, the throttling loss can be calculated using the following formula:
Wth = m * (h4 - h1)
Where h1 is the enthalpy of the refrigerant at the evaporator inlet.
Using the above formulas and the given parameters, the area of superheat horn and throttling loss can be calculated.
- Evaporator Temperature: -25oC
- Condenser Temperature: 50oC
Coefficient of Performance (COP)
The COP of a refrigeration system is defined as the ratio of heat removed from the evaporator to the work input to the compressor. The COP of the SSS vapour compression refrigeration system can be calculated using the following formula:
COP = (Heat Removed from Evaporator) / (Work Input to Compressor)
The heat removed from the evaporator can be calculated using the following formula:
Qevap = m * h2 - m * h1
Where m is the mass flow rate of the refrigerant, h2 is the enthalpy of the refrigerant at the evaporator outlet, and h1 is the enthalpy of the refrigerant at the evaporator inlet.
The work input to the compressor can be calculated using the following formula:
Wcomp = m * (h2 - h3)
Where h3 is the enthalpy of the refrigerant at the compressor inlet.
Using the above formulas and the given parameters, the COP of the system can be calculated as follows:
COP = Qevap / Wcomp = (m * (h2 - h1)) / (m * (h2 - h3))
Work Input to Compressor
The work input to the compressor can be calculated using the formula mentioned above. Using the given parameters and the formula, the work input to the compressor can be calculated.
Area of Superheat Horn and Throttling Loss
The superheat horn is a region in the refrigeration cycle where the refrigerant is superheated before entering the compressor. The additional work required due to superheat can be calculated using the following formula:
Wsh = m * (h3 - h4)
Where h4 is the enthalpy of the refrigerant at the evaporator inlet.
The throttling loss is the additional work input required due to throttling in place of isentropic expansion. Assuming the isobar at condenser pressure to coincide with the saturated liquid line, the throttling loss can be calculated using the following formula:
Wth = m * (h4 - h1)
Where h1 is the enthalpy of the refrigerant at the evaporator inlet.
Using the above formulas and the given parameters, the area of superheat horn and throttling loss can be calculated.
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A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.?
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A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.?.
A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.?.
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A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.?, a detailed solution for A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.? has been provided alongside types of A SSS vapour compression refrigeration system based on refrigerant R 134a operates between an evaporator temperature of –25oC and a condenser temperature of 50oC. Assuming isentropic compression, find: a) COP of the system b) Work input to compressor c) Area of superheat horn (additional work required due to superheat) Throttling loss (additional work input due to throttling in place of isentropic expansion) assuming the isobar at condenser pressure to coincide with saturated liquid line.? theory, EduRev gives you an
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