**Educational Content: Understanding Refrigeration Cycles**A commercial refrigerator utilizes refrigerant-134a as the working fluid to maintain a refrigerated space at -35°C. This process involves rejecting waste heat to cooling water, which enters the condenser at 18°C at a rate of 0.35 kg/s and exits at 26°C. Within this system, the refrigerant enters the condenser at 1.2 MPa and 50°C, leaving the condenser at the same pressure but subcooled by 5°C. The compressor used in this system consumes 3.3 kW of power.### Diagram ExplanationThe diagram illustrates the refrigeration cycle components and their interactions:- **Compressor**: The refrigerant (at low pressure and low temperature) exits the evaporator and enters the compressor. The compressor increases the refrigerant's pressure and temperature before it is discharged to the condenser.- **Condenser**: In the condenser, the refrigerant releases its heat to the cooling water. The water enters the condenser at 18°C and exits at 26°C. The refrigerant’s pressure remains constant at 1.2 MPa, and it leaves slightly subcooled (5°C below its saturation temperature).- **Expansion Valve**: The high-pressure liquid refrigerant then passes through the expansion valve, where it experiences a reduction in pressure and temperature, becoming a low-pressure mixture of liquid and vapor.- **Evaporator**: The refrigerant absorbs heat from the refrigerated space at -35°C, causing the refrigerant to evaporate into a gas. This completes the refrigeration cycle, with the low-pressure refrigerant returning to the compressor.### TaskDetermine the refrigeration load, which represents the rate of heat removal from the refrigerated space.**The refrigeration load is ______ kW.**(*Note: An answer is required to proceed further in the analysis.*)

Given:Refrigerant=134aRefrigerated space temperature, Te=-35oCWater inlet temperature, Tw,i=18oCMass…

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.

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.

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

**Educational Content: Understanding Refrigeration Cycles**

A commercial refrigerator utilizes refrigerant-134a as the working fluid to maintain a refrigerated space at -35°C. This process involves rejecting waste heat to cooling water, which enters the condenser at 18°C at a rate of 0.35 kg/s and exits at 26°C. Within this system, the refrigerant enters the condenser at 1.2 MPa and 50°C, leaving the condenser at the same pressure but subcooled by 5°C. The compressor used in this system consumes 3.3 kW of power.

### Diagram Explanation

The diagram illustrates the refrigeration cycle components and their interactions:

- **Compressor**: The refrigerant (at low pressure and low temperature) exits the evaporator and enters the compressor. The compressor increases the refrigerant's pressure and temperature before it is discharged to the condenser.

- **Condenser**: In the condenser, the refrigerant releases its heat to the cooling water. The water enters the condenser at 18°C and exits at 26°C. The refrigerant’s pressure remains constant at 1.2 MPa, and it leaves slightly subcooled (5°C below its saturation temperature).

- **Expansion Valve**: The high-pressure liquid refrigerant then passes through the expansion valve, where it experiences a reduction in pressure and temperature, becoming a low-pressure mixture of liquid and vapor.

- **Evaporator**: The refrigerant absorbs heat from the refrigerated space at -35°C, causing the refrigerant to evaporate into a gas. This completes the refrigeration cycle, with the low-pressure refrigerant returning to the compressor.

### Task

Determine the refrigeration load, which represents the rate of heat removal from the refrigerated space.

**The refrigeration load is ______ kW.**

(*Note: An answer is required to proceed further in the analysis.*)

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