Lab 8
Khanh Nguyen
Refrigeration
ENG-100-17 F22
Thursday 3:00 pm
Professor Christians
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Refrigeration Lab Report: Analyzing the Refrigeration Cycle, Assignments of Mechanical Engineering
This lab report provides a detailed analysis of the refrigeration cycle, focusing on the role of key components like the evaporator, compressor, condenser, and expansion valve. It includes observations of temperature and pressure changes throughout the cycle, demonstrating the principles of heat transfer and phase changes. The report also includes a discussion of the fan's impact on cooling efficiency and the importance of each component in maintaining cold temperatures.
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Lab 8
Khanh Nguyen Refrigeration ENG-100-17 F Thursday 3:00 pm Professor Christians
1) Graphs of temperature vs time. a)
c)
3-5: Typed answer
- Using the data from question 1 we can see that the fan doesn’t not help cooling down the ambient temperature. It shows that the temperature decreases from 65oF to 64oF but just 1 degree Fahrenheit is not significant.
- The evaporator is the component of a refrigerator responsible for producing cold temperatures inside the appliance. Evaporation of the liquid refrigerant creates a cooler atmosphere, ideal for preserving food. We can see the input liquid has been evaporated in the output pipe. The compressor is the "soul" of a fridge. It heats the refrigerant, pumps it around the system, and increases pressure on the heated side of the circuit. It's quite similar to pumping air into a bicycle tube; as you increase the pressure, you'll feel the pump getting warmer. The pressure increase massively after going through the condenser (from 9.5psi to 85psi) along with the rise in temperature as well, from 83oF to 203oF The condenser is located in the rear of the fridge and is probably covered in dust. The refrigerant within cools to the point where it condenses, changing back into a liquid state from a gas. The output probably is