Optimization of a Geothermal Heat Pump System with Aboveground Water Storage
| dc.contributor.advisor | Richard R. Johnson, Committee Member | en_US |
| dc.contributor.advisor | Herbert M. Eckerlin, Committee Member | en_US |
| dc.contributor.advisor | James W. Leach, Committee Chair | en_US |
| dc.contributor.author | Forrest, Andrew Ryan | en_US |
| dc.date.accessioned | 2010-04-02T18:14:33Z | |
| dc.date.available | 2010-04-02T18:14:33Z | |
| dc.date.issued | 2003-04-08 | en_US |
| dc.degree.discipline | Mechanical Engineering | en_US |
| dc.degree.level | thesis | en_US |
| dc.degree.name | MS | en_US |
| dc.description.abstract | This study investigates and recommends design improvements for a geothermal heat pump system with aboveground water storage. It builds on a previous study that tested a 3-ton geothermal heat pump on a mobile classroom at Wilson Mills Elementary School in Johnston County, North Carolina. The previous experiment used two 1,000 gallon polyethylene bladders filled with saltwater for freeze protection. Using TRNSYS, a model of the original system was constructed and validated by comparing model predictions to measured performance. TRNSYS models of several new designs and theories were constructed to evaluate potential design improvements. The system models were evaluated based on predicted performance for a typical meteorological year, and on other criteria such as initial cost, maintenance, and portability. This resulted in a new optimized system design in which the water storage volume is reduced to 120 gallons, and the predicted electrical energy requirements are about two-thirds of those of an air source heat pump. The predominant design improvement to the system is the implementation of a heat exchanger constructed of PVC pipe. Detailed design, costs, and assembly procedures for the PVC heat exchanger are presented in this study. | en_US |
| dc.identifier.other | etd-04022003-180600 | en_US |
| dc.identifier.uri | http://www.lib.ncsu.edu/resolver/1840.16/2503 | |
| dc.rights | I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. | en_US |
| dc.subject | geothermal heat pump | en_US |
| dc.subject | TRNSYS | en_US |
| dc.subject | PVC heat exchanger | en_US |
| dc.title | Optimization of a Geothermal Heat Pump System with Aboveground Water Storage | en_US |
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