Experimental Evaluation of HVAC Energy Conservation Options for Modular Classrooms

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Title: Experimental Evaluation of HVAC Energy Conservation Options for Modular Classrooms
Author: Freeman, Jacob Thomas
Advisors: James W. Leach, Committee Chair
Herbert M. Eckerlin, Committee Member
Richard R. Johnson, Committee Member
Abstract: In this study, three modular classrooms at one school campus and two modular classrooms at a second campus were monitored to measure the effectiveness of the heating ventilating and air conditioning systems to provide healthy interior conditions and to compare the energy savings made possible by several types of HVAC system design improvements. All of the classrooms are similar in construction and all are located in similar environments near Raleigh, NC. One classroom at each campus has a water source heat pump designed specifically for mobile buildings. The water exchanges heat with the earth and the atmosphere through a PVC heat exchanger that lies on top of the ground in the crawl space. The three classrooms at one campus are occupied throughout the summer, while the two classrooms at the other campus are not occupied for approximately two months during the summer. At the campus with year round occupation, one air source heat pump is monitored in standard configuration. The other air source heat pump is equipped with an exhaust-to-inlet air heat exchanger to recover energy in the ventilation air. The last classroom at this campus with the water source heat pump is also equipped with an exhaust-to-inlet air heat exchanger. At the campus with two months of summer vacation, the air source heat pump does not have energy recovery ventilation but has a nighttime setback thermostat. The water source heat pump at this campus also does not have energy recovery ventilation but has a nighttime setback thermostat.
Date: 2005-11-29
Degree: MS
Discipline: Mechanical Engineering
URI: http://www.lib.ncsu.edu/resolver/1840.16/2095


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