高速公路服务区建筑供热水供暖方案对比研究

A Comparative Study on the Schemes of Hot Water Supply and Heating to Three Buildings in an Expressway Service Area

根据创建的太阳能-垂直埋管式土壤源热泵供热水供暖联供系统,针对榆林地区某高速公路服务区建筑,以费用年值和系统COP为评价指标,利用TRNSYS软件模拟分析,对比研究了三种供热水供暖方案的系统经济性和能效,并讨论了电价对这三种方案经济性的影响。结果表明:1)水平分供式、垂直分供式和垂直联供式三种供热水供暖方案均可行;2)初投资:水平分供式<垂直分供式<垂直联供式,年运行费用:水平分供式>垂直分供式>垂直联供式,费用年值:水平分供式>垂直分供式>垂直联供式;3)系统COP:水平分供式<垂直分供式<垂直联供式;4)综合分析可知,联供方案优于垂直分供方案,垂直分供方案优于水平分供方案,且电价越高(高于0.3元/kWh时),优势越明显。

Based on the self-designed vertical borehole solar-ground source heat pump system supplying hot water andheating, authors of the article took the expressway service area buildings in Yulin as the research object, and took annualcost and system COP as evaluation index, and compared the three schemes of supplying hot water and heating throughthe TRNSYS simulation analysis, and discussed the influence on the economic analysis coming from the electricity price.The results showed that： 1） the horizontal independent supply type, the vertical independent supply type and the verticalcombined supply type are all feasible; 2） the investment cost： the first one 〉 the second one 〉 the third one, the annualoperating cost： the first one 〈 the second one 〈 the third one. Taking the investment cost and the operating cost intoaccount, the annual cost： the first one 〈 the second one 〈 the third one, 3） the system COP： the first one 〈 the secondone 〈 the third one; 4） when the annual cost and the system COP are considered, the first type is superior to the secondtype, the second type has an advantage over the third type, and the higher the electricity price （when over 0.3YuargkWh）, the greater the superiority.