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Development of Urban-type Geothermal Heat Pump Systems for Minimizing Heat Island Phenomena

开发城市型地源热泵系统以减少热岛现象

基本信息

批准号：
16206089
负责人：
ITOI Ryuichi
金额：
$ 29.04万
依托单位：
KYUSHU UNIVERCITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16206089/
关键词：
heat pump groundwater numerical modeling field survey heat storage thermal response test thermal conductivity optical fiber thermometer 水文調査地下水

项目摘要

For the optimum design and the evaluation of thermophysical properties of ground, field tests were carried out at experimental heat exchange wells of.50m deep which were newly-drilled in Fukuoka City and Karatsu City. In thermal response tests (TRTs), vertical temperature profiles were measured using optical fiber thermometers and the temperature data were interpreted to develop an estimation procedure of the vertical thermal conductivity distributions with high accuracy. In Fukuoka City, cooling and heating tests were carried out for the collection of long-term operation data. On the basis of the obtained operation record and the geological information at the test site, a numerical model was constructed and validated with field test data for the optimization of well design and operation strategy. In Karatsu City, operation data of an air-conditioning system of 200m2 floor space were collected for one year to develop a system model of a Geothermal Heat Pump (GHP) air-conditioning syste … More m with the integration of the results of TRT and groundwater velocity measurements. At the same location, electrical prospecting of groundwater level was conducted for the exploration of optimum location of GHP systems.For the optimum site selection of GHP systems with the consideration to the advection effect of groundwater flow, field surveys of groundwater flow were carried out in Akita, Chikushi and Fukui Plain, Japan. Groundwater samples were collected at several locations of different geological settings and elevations for the analysis of water qualities and the stable isotope ratio of oxygen and hydrogen. Profiles of ground temperature were also measured with high resolution using a thermister thermometer. On the basis of the above data, groundwater environment maps were developed to investigate the field-scale groundwater flow system. Field-wide numerical models of groundwater flow system were then developed using numerical simulation software, FEFLOW, for estimating the distribution of groundwater velocity, direction and temperature in each plain. Using the numerical model, suitability maps of GHP system were developed for the optimum site selection of future installation of GHP system.Cold heat storage system with the cooling of quarry walls was developed in Hinai Town, Akita. In a rectangular space in a underground quarry of green tuff, horizontal holes and observation holes were drilled. The horizontal holes were connected in series with water pipes to cool the walls with heat pump and to demonstrate the energy saving efficiency of the heat storage system. Air temperatures and those of surface and inside of the walls, etc. were monitored to demonstrate that a cooling space of 0-2℃ could be established with the use of cold heat in winter. Less

为了进行优化设计和评价土壤的热物理性质，在福冈市和加拉津市新钻的. 50 m深的实验换热威尔斯井进行了现场试验。在热响应测试（TRT）中，垂直温度分布测量使用光纤温度计和温度数据进行解释，以开发一个高精度的垂直热导率分布的估计程序。在福冈市进行了制冷和制热试验，以收集长期运行数据。根据试验现场的地质资料和施工记录，建立了数值模型，并利用现场试验数据对模型进行了验证，为优化设计和施工策略提供了依据。以加拉津市200 m2建筑面积的空调系统为研究对象，通过一年的运行数据，建立了地源热泵空调系统的系统模型。 ...更多信息 m与TRT和地下水流速测量结果的整合。在同一地点进行了地下水位电法勘探，以探索GHP系统的最佳位置;在考虑地下水流平流效应的GHP系统最佳位置选择方面，在日本秋田、筑紫和福井平原进行了地下水流实地调查。在不同地质环境和海拔的多个地点收集了地下水样本，用于分析水质以及氧和氢的稳定同位素比。还使用热敏电阻温度计以高分辨率测量了地面温度分布。在此基础上，编制了地下水环境图，对野外尺度的地下水流系统进行了研究。利用数值模拟软件FEFLOW建立了地下水流系统的野外数值模型，估算了各平原区地下水流速、流向和温度的分布。利用数值模型，绘制了GHP系统的适宜性图，为今后GHP系统的最佳安装选址提供了依据。在日本秋田日内町开发了利用采石场墙体冷却的蓄冷系统。在一个绿色凝灰岩地下采石场的矩形空间内，钻水平孔和观察孔。将水平孔与水管串联，利用热泵对墙体进行冷却，以展示蓄热系统的节能效果。通过对室内空气温度、墙体表面温度、墙体内部温度等的监测，证明冬季利用冷热能建立0-2℃的冷却空间。少