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Design of School Building HVAC Retrofit with Hybrid Geothermal Heat-Pump System

2004; American Society of Civil Engineers; Volume: 10; Issue: 3 Linguagem: Inglês

10.1061/(asce)1076-0431(2004)10

1943-5568

Andrew D. Chiasson, C. Yavuzturk, W. J. Talbert,

Engineering Education and Pedagogy

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.