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首页> 外文期刊>Thermal engineering >Ground Source Heat Supply in Moscow Oblast: Temperature Potential and Sustainable Depth of Heat Wells
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Ground Source Heat Supply in Moscow Oblast: Temperature Potential and Sustainable Depth of Heat Wells

机译：莫斯科州的地源供热：热井的温度潜力和可持续深度

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AbstractThe paper is devoted to a problem of increasing the efficiency of low-potential geothermal heat in heat pump systems of residential buildings the Moscow oblast of Russia, including Moscow. Estimates of a natural geothermal potential in the Moscow oblast (based on climatological data for the period from 1982 to 2011) are presented and a “Typical climatic year of natural soil temperature variations for the geoclimatic conditions of the Moscow oblast, including the city of Moscow” is proposed. Numerical simulation of the influence of geothermal energy potential and the depth of heat wells on the efficiency of ground source heat pump systems for the heat supply of residential buildings is carried out. Analysis of the numerical simulation showed that the operation of a heat pump system in a house heating mode under the geoclimatic conditions of the Moscow oblast leads to a temperature drop of the heat-exchange medium circulating through heat wells to 5–6°C by the end of the first 10 years of operation, and the process stabilizes by the 15th year of operation, and further changes in the heat-exchange medium temperature do not any longer significantly affect the temperature of the heat-exchange medium in the heat well. In this case, the exact dependence of the heat-exchange medium temperature drop on the depth is not revealed. Data on the economically expedient heat well depth for the conditions of the Moscow oblast ensuring a net present value for the whole residential building life cycle are presented. It is found that the heat well depth of 60 m can be considered as an endpoint for the Moscow oblast, and a further heat well deepening is economically impractical.
机译： 摘要 本文致力于解决莫斯科住宅建筑热泵系统中低电势地热效率提高的问题俄罗斯（包括莫斯科）的州。提出了莫斯科州自然地热潜力的估算值（基于1982年至2011年的气候数据），并提出了“莫斯科州（包括莫斯科市）的地气候条件下自然土壤温度变化的典型气候年” ”建议。对地热能势和热井深度对住宅建筑供热地源热泵系统效率的影响进行了数值模拟。数值模拟分析表明，在莫斯科州的地球气候条件下，在房屋供热模式下运行的热泵系统会导致通过热井循环的热交换介质的温度降到5-6°C。在运行的第一个10年结束时，过程会在运行的第15年稳定下来，并且热交换介质温度的进一步变化不再显着影响热井中热交换介质的温度。在这种情况下，没有显示出热交换介质温度下降对深度的确切依赖性。提供了有关莫斯科州情况的经济方便的热井深度数据，可确保整个住宅建筑生命周期的净现值。发现60 m的热井深度可以作为莫斯科州的终点，而进一步热井深化在经济上是不切实际的。

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