Analysis of Energy, Environmental and Life Cycle Cost Reduction Potential of Ground Source Heat Pump (GSHP) in Hot and Humid Climate

Yong X. Tao ; Yimin Zhu

关键词: CLIMATES;    COOLING LOAD;    COOLING TOWERS;    ECONOMICS;    EVALUATION;    GROUND SOURCE HEAT PUMPS;    HEAT SINKS;    HEATING;    LIFE-CYCLE COST;    PRODUCTION;    SOLAR ENERGY;    WATER HEATING Geothermal Heat Pump;    Hot and Humid Climate;   

DOI  :  10.2172/1039050
RP-ID  :  10EE0002802
PID  :  OSTI ID: 1039050
Others  :  TRN: US201215%%345

学科分类：再生能源与代替技术

美国|英语

来源: SciTech Connect

【 摘 要 】

It has been widely recognized that the energy saving benefits of GSHP systems are best realized in the northern and central regions where heating needs are dominant or both heating and cooling loads are comparable. For hot and humid climate such as in the states of FL, LA, TX, southern AL, MS, GA, NC and SC, buildings have much larger cooling needs than heating needs. The Hybrid GSHP (HGSHP) systems therefore have been developed and installed in some locations of those states, which use additional heat sinks (such as cooling tower, domestic water heating systems) to reject excess heat. Despite the development of HGSHP the comprehensive analysis of their benefits and barriers for wide application has been limited and often yields non-conclusive results. In general, GSHP/HGSHP systems often have higher initial costs than conventional systems making short-term economics unattractive. Addressing these technical and financial barriers call for additional evaluation of innovative utility programs, incentives and delivery approaches. From scientific and technical point of view, the potential for wide applications of GSHP especially HGSHP in hot and humid climate is significant, especially towards building zero energy homes where the combined energy efficient GSHP and abundant solar energy production in hot climate can be an optimal solution. To address these challenges, this report presents gathering and analyzing data on the costs and benefits of GSHP/HGSHP systems utilized in southern states using a representative sample of building applications. The report outlines the detailed analysis to conclude that the application of GSHP in Florida (and hot and humid climate in general) shows a good potential.