北京地区温室地源热泵供暖能耗及经济性分析

为研究地热在温室中应用的可行性，该文在北京地区一栋日光温室中采用地下水式地源热泵系统进行了供暖试验研究。试验结果表明，整个供暖期（2007年10月15日－2008年3月10日）地源热泵系统的供暖性能系数约为3.83，与燃煤热水采暖系统相比，地源热泵系统供暖可节约42%的能源消耗量，具有显著的节能减排效果。温室内单位面积的每日供暖耗电量约为0.15 kW·h/(m2·d)，供暖费用约为0.12元/(m2·d)。地源热泵供暖、天然气供暖、燃煤热水供暖以及燃油热风供暖几种温室采暖方式的相对运行费用分别约为1.20、1.31、1.00与3.36，地源热泵供暖的运行费用略高于燃煤热水供暖，但低于天然气供暖和燃油热风供暖。

Energy consumption and economic analysis of ground source heat pump used in greenhouse in Beijing

In order to study the feasibility of the application of ground source heat pump (GSHP) in greenhouses, experimental research on groundwater-style ground source heat pump system was carried out in greenhouse heating in Beijing. Experimental result showed that the coefficient of the system performance in greenhouse heating had reached 3.83 during the heating period of Oct.15, 2007-Mar.10, 2008, about 42% energy had been saved compare with conventional coal-fired hot water heating system, which its merits of energy-saving and greenhouse gases mitigating of the system were distinctive. The total electric consumption and the heating cost of the system was 0.15 kW·h/(m2·d) and 0.12 Yuan/(m2·d), respectively. The comparison among the heating systems of GSHP, natural gas, coal and light diesel oil were made, which the relative heating cost were 1.20, 1.31, 1.00 and 3.36, respectively, and the heating cost of ground source heat pump was higher than that of coal slightly, but was lower than that of natural gas and light diesel oil apparently.