基于能值的土壤源热泵空调系统的可持续性评价

Emergy-based Sustainability Evaluation of Air-conditioning System of Ground-source Heat Pump

土壤源热泵空调系统的可持续发展能力需要从经济、社会和环境效益几个方面作定量分析。本文以武汉某办公楼的暖通空调工程为例,将土壤源热泵和空气源热泵、风冷冷水机组+燃油锅炉等3种常用的冷热源方案进行了可持续发展能力的比较评价。结果表明,与风冷冷水机组+燃油锅炉系统和空气源热泵系统等2种系统相比,土壤源热泵系统的能值产出率并没有优势,经济竞争力较差,但它给环境的压力最小,其能值可持续指数较高,可维持较长时间内的可持续发展。

Quantitative analysis is required to be conducted on the sustainable development capacity of air conditioning system of ground-source heat pump from economic,social and environmental benefits.This paper takes HVAC engineering in a certain office building of Wuhan for example and compares as well as evaluates the sustainable development capacity of the 2 commonly used cold and heat source schemes of ground-source heat pump and air source heat pump,air-cooled chiller unit＋oil burning boiler,etc.The results show that the emergy output capacity of ground-source heat pump system lacks superiority and is poor in economic competitiveness compared with the 2 systems of air-cooled chiller unit＋oil burning boiler system and air source heat pump system,but it exerts minimum pressure on the environment,with relatively high sustainable index of emergy,and is capable of maintaining sustainable development for a relatively long time.