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Effect of Size on Ground-Coupled Heat Pump Performance

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Date
2013
Author
Alalaimi, Mohammad Ali
Advisors
Bejan, Adrian
Lorente, Sylvie
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Abstract

Here we document and explain a general trend in the performance of refrigeration and heat pump systems: larger installations are more efficient. We show analytically why the performance of the system must increase with the size of the installation. The second law efficiency of refrigeration systems must increase with their size. We also show that the power requirement a ground-coupled heat pump system must decrease as the size of the ground heat exchanger increases. From these two trends emerges the trade off between the size of the heat pump and the size of the ground heat exchanger. The challenge is to find the optimum size of the ground-coupled heat pump. We show numerically the optimum heat pump size and the ground heat exchanger size that correspond to minimum total power requirement subject to a cost constraint.

Type
Master's thesis
Department
Mechanical Engineering and Materials Science
Subject
Mechanical engineering
Alternative energy
Constructal design
Cooling
Ground heat exchangers
Heat pumps
Permalink
https://hdl.handle.net/10161/8799
Citation
Alalaimi, Mohammad Ali (2013). Effect of Size on Ground-Coupled Heat Pump Performance. Master's thesis, Duke University. Retrieved from https://hdl.handle.net/10161/8799.
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This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

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