A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure, subcooled by 5°C. The compressor consumes 3.3 kW of power. Use data from the tables.**Diagram Explanation:**The diagram illustrates the refrigeration cycle involving the following components and states:1. **Compressor:** - Inlet: Low-pressure refrigerant from the evaporator - Outlet: High-pressure refrigerant to the condenser - Represents work input \( W_{\text{in}} \)2. **Condenser:** - Refrigerant enters at 1.2 MPa and 50°C - Cools and exits subcooled by 5°C - Rejects heat to cooling water (inlet at 18°C, outlet at 26°C)3. **Expansion Valve:** - Lowers the pressure of the refrigerant before entering the evaporator4. **Evaporator:** - Absorbs heat \( Q_L \) from the refrigerated space, maintaining it at -35°C**Tasks:**Determine the Coefficient of Performance (COP) of the refrigerator.The COP of the refrigerator is ______.(You must provide an answer before moving to the next part.)

Coefficient of performance of refrigerator is defined as the ratio of heat removed from the sink to…

A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. The compressor consumes 3.3 kW of power. Use data from the tables. 26°C 4 1.2 MPa 5°C subcooled Expansion valve Condenser Evaporator PL Water 18°C 1.2 MPa 50°C Compressor Determine the COP of the refrigerator. The COP of the refrigerator is

A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure subcooled by 5°C. The compressor consumes 3.3 kW of power. Use data from the tables. 26°C 4 1.2 MPa 5°C subcooled Expansion valve Condenser Evaporator PL Water 18°C 1.2 MPa 50°C Compressor Determine the COP of the refrigerator. The COP of the refrigerator is

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Question

A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°C by rejecting waste heat to cooling water that enters the condenser at 18°C at a rate of 0.35 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 50°C and leaves at the same pressure, subcooled by 5°C. The compressor consumes 3.3 kW of power. Use data from the tables.

**Diagram Explanation:**

The diagram illustrates the refrigeration cycle involving the following components and states:

1. **Compressor:**
- Inlet: Low-pressure refrigerant from the evaporator
- Outlet: High-pressure refrigerant to the condenser
- Represents work input \( W_{\text{in}} \)

2. **Condenser:**
- Refrigerant enters at 1.2 MPa and 50°C
- Cools and exits subcooled by 5°C
- Rejects heat to cooling water (inlet at 18°C, outlet at 26°C)

3. **Expansion Valve:**
- Lowers the pressure of the refrigerant before entering the evaporator

4. **Evaporator:**
- Absorbs heat \( Q_L \) from the refrigerated space, maintaining it at -35°C

**Tasks:**

Determine the Coefficient of Performance (COP) of the refrigerator.

The COP of the refrigerator is ______.

(You must provide an answer before moving to the next part.)

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