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

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