Direct comparison between horizontal and vertical ground-loop systems for a ground source heat pump system

地源热泵系统水平和垂直地循环系统的直接比较

• 批准号: 439454-2012
• 负责人: Leong, WeyHerng
• 金额: $ 1.82万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=511086
• 关键词: Direct; comparison; between; horizontal; vertical

The ground source heat pump (GSHP) system is an attractive alternative heating and cooling system for buildings, because of its high efficiency. For a ground source heat pump system, which utilizes the ground as the heat source or sink, a ground loop is installed to exchange heat. There are two ground loop configurations, namely: horizontal and vertical. There are pros and cons for each configuration. The horizontal ground loops are buried horizontally in trenches, usually down to about 2-m depth, and their installation costs are usually lower. Depending on the required ground-loop length, the required land area can be large; therefore, this configuration may not be applicable to urban environment. However, the vertical ground loops are installed vertically in boreholes, usually up to 75 m to 200 m in length, and their installation costs are usually higher. The vertical borehole fields usually occupy less land areas than the horizontal trench fields. Nonetheless, when land area is not a concern, as in suburban and country-side regions, both configurations can be used. There are a number of studies on each ground-loop configuration separately in the open literature. But none has both ground-loop configurations studied simultaneously with the same heat pump for a building.

由于其高效率，地面源热泵（GSHP）系统是建筑物的有吸引力的替代加热和冷却系统。对于将地面作为热源或水槽的地面源热泵系统，安装地面环以交换热量。有两个接地循环配置，即：水平和垂直。每种配置都有利弊。水平地面回路水平埋在战es中，通常向下约2米，其安装成本通常较低。根据所需的地面长度，所需的土地面积可能很大；因此，这种配置可能不适用于城市环境。但是，垂直地面环垂直安装在钻孔中，通常长度高达75 m至200 m，其安装成本通常更高。垂直钻孔场通常比水平沟渠田地占据较少的土地面积。但是，当土地面积不关心时，例如在郊区和乡村地区，可以使用这两种配置。在开放文献中，分别对每种地面构造进行了许多研究。但是，没有一个与同一热泵同时研究建筑物的底环配置。