热源井抽灌同井连续取/放热特性试验
针对抽灌同井连续运行特性的研究不足,利用单井循环地下换热系统砂箱试验台,以沈阳和上海2地采暖期和空调期的时间尺度为依据,分别开展了连续取热和连续放热2种运行模式下抽灌同井运行特性的试验研究。结果表明,抽灌同井在该试验条件下对取热工况更加敏感,取热比放热更为困难。在连续取热工况下,含水层在受到外界初次干扰的影响更为明显,第2个运行周期的累计取热量降幅为6个运行周期累计取热量降幅的57.1%。在热/冷负荷占优的地区,应根据建筑负荷采取辅助手段及时对含水层进行热量/冷量补给,保证热泵机组高效运行。...
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| Published in | 农业工程学报 Vol. 33; no. 11; pp. 248 - 253 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
北方工业大学土木工程学院,北京 100144
2017
哈尔滨工业大学市政环境工程学院,哈尔滨 150090%哈尔滨工业大学市政环境工程学院,哈尔滨,150090 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.11975/j.issn.1002-6819.2017.11.032 |
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| Summary: | 针对抽灌同井连续运行特性的研究不足,利用单井循环地下换热系统砂箱试验台,以沈阳和上海2地采暖期和空调期的时间尺度为依据,分别开展了连续取热和连续放热2种运行模式下抽灌同井运行特性的试验研究。结果表明,抽灌同井在该试验条件下对取热工况更加敏感,取热比放热更为困难。在连续取热工况下,含水层在受到外界初次干扰的影响更为明显,第2个运行周期的累计取热量降幅为6个运行周期累计取热量降幅的57.1%。在热/冷负荷占优的地区,应根据建筑负荷采取辅助手段及时对含水层进行热量/冷量补给,保证热泵机组高效运行。 |
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| Bibliography: | Groundwater heat pump system is an ideal approach to heat and cool the building due to its attractive advantages.When using groundwater as a primary energy source in combination with heat pump,the groundwater is pumped from the pumping area,heated/cooled in the heat exchanger of the heat pump,and then reinjected into the irrigation area.Single well groundwater heat pump（SWGWHP） is a new member of groundwater heat pump,which has become increasingly popular for using because of the economic advantages.In general,SWGWHP includes standing column well（SCW）,pumping recharging well（PRW）,and forced external circulation standing column well（FECSCW）.Their pumping and injection pipes are placed in a same well,the low part of which is pumping water and the top part recharging water.The SCW needs to drill hole in the bedrock directly,and then most of the water circulates in the well bore and the heat exchange takes place in the well wall,while small part of water goes out of the borehole and exchanges the heat with aquife |
| ISSN: | 1002-6819 |
| DOI: | 10.11975/j.issn.1002-6819.2017.11.032 |