Cost-Effectiveness Integration of Efficient Low-Lift Baseload Cooling Equipment: FY08 Final Report

摘要

A long-term goal of Department of Energy's (DOE's) Commercial Buildings Integration Program is to develop cost-effective technologies and building practices that will enable the design and construction of cost-effective net-zero energy buildings--commercial buildings that produce as much energy as they use on an annual basis--by 2025. In response, Pacific Northwest National Laboratory (PNNL) proposed and DOE initiated a study to investigate one heating, ventilation and air conditioning (HVAC) system option, low-lift cooling that offers potentially exemplary HVAC energy performance relative to American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) Standard 90.1-2004. This analysis shows that significant cooling system efficiency gains can be achieved by integrating low-lift cooling system: variable-speed compressor and transport motor controls, radiant cooling with dedicated ventilation air transport and dehumidification, and cool storage. The cooling energy savings for a standard-performance building range from 37% to 84% and, for a very high-performance building, from -9% to 70%.