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Design of School Building HVAC Retrofit with Hybrid Geothermal Heat-Pump System |
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| Authors: | A. D. Chiasson C. Yavuzturk W. J. Talbert |
| Affiliation: | 1Research Associate, Univ. of Wyoming, Dept. of Civil and Architectural Engineering, 1000 E. University Ave., Laramie, WY 82071-3095. 2Assistant Professor, Univ. of Wyoming, Dept. of Civil and Architectural Engineering, 1000 E. University Ave., Laramie, WY 82071-3095. 3Engineer, AEI Affiliated Engineers, Madison, WI. |
| Abstract: | This paper describes a proposed energy-efficient retrofit of a heating, ventilating, and air-conditioning system for a school building in southeastern Wyoming. The existing system consists of six conventional constant air volume heating and ventilating units with heat provided by a gas-fired hot water boiler. The proposed replacement is a novel system application that consists of a geothermal heat pump (GHP) system with a supplemental solar thermal collector array. Ventilation air heat recovery and variable-speed pumping are also included. Innovative design of both the ground loop and the interior building loop are accomplished using a whole system approach. System simulation analyses show a simple payback period of less than 10 years. An extra benefit of the GHP system not accounted for in the economic analysis is added cooling capability. |
| Keywords: | Heat pumps Thermal energy Buildings, public Retrofitting Ventilation Air conditioning Hybrid methods |