Date of Award
Spring 2002
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical & Aerospace Engineering
Program/Concentration
Mechanical Engineering
Committee Director
Sushil K. Chaturvedi
Committee Member
Surendra N. Tiwari
Committee Member
Taj O. Mohielden
Call Number for Print
Special Collections; LD4331.E56 G665 2002
Abstract
A direct expansion solar-assisted heat pump, the components of which are properly matched for a specified ambient condition characterized by geographical location, has been analyzed. The steady state energy equation across the collector is solved for several refrigerants for two configurations; bare collector and one-cover collector. The REFPROP computer program, developed by the National Institute of Science and Technology, is used to predict refrigerant properties that are used in the steady state energy balance. The thermal performance as characterized by the coefficient of performance (COPn) is determined for a variety of refrigerants. A graphical procedure is developed for sizing of solar collector area and heat pump compressor displacement capacity for two configurations that use a glass cover and a bare collector, respectively.
The effects of using different refrigerants on system thermal performance are analyzed. The performance degradation due to mandated switching from refrigerant R-12 to hydro-fluoro-carbon refrigerants and refrigerant blends is investigated.
Rights
In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
DOI
10.25777/fr1z-2q56
Recommended Citation
Gorozabel Chata, Francis B..
"Analysis of a Direct Expansion Solar-Assisted Heat Pump Using Different Refrigerants"
(2002). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/fr1z-2q56
https://digitalcommons.odu.edu/mae_etds/517