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首页> 外文会议>Sustainable built eneironment tallinn and helsinki conference >The effect of hydremic balancing on room temperature and heat pump efficiency of a building with underfloor heating
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The effect of hydremic balancing on room temperature and heat pump efficiency of a building with underfloor heating

机译：水分平衡对地板加热建筑物室温和热泵效率的影响

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Underfloor heating is a common solution in single-family houses and a suitable solution for nearly zero-energy buildings as a low temperature heating system. According to general practice, the underfloor heating systems should be balanced to assure stable room temperatures and avoid under heating in rooms with higher heat losses. The purpose of the presented study was to analyze the effect of hydronic balancing on the room temperature fluctuations and heat pump performance. The tests were performed at full-scale nearly zero-energy building test facility with under floor heating and an air-to-water heat pump. We measured room and floor temperatures and monitored the heat pump electricity use and heat output. The heat balance of rooms was disturbed with internal gains introduced to several rooms in cycles. The results showed that room temperature fluctuations slightly increased of an unbalanced system, however during all tests, the average temperature fluctuations during night time were below 0.2 °C, so both systems performed well. We identified a negative effect of balancing on the heat pump performance as higher COP was measured in case of an unbalanced system. The results allow to conclude that in the case of studied system with one manifold and relatively small loop length differences the balancing had negligible effect on system performance. However, the topic should be studied further in more unfavorable conditions.
机译：下层加热是单家庭房屋中的常见解决方案，以及作为低温加热系统的几乎零能量建筑的合适解决方案。根据一般的做法，应平衡地板加热系统，以确保稳定的室温，并避免在具有更高热损失的房间内进行加热。本研究的目的是分析液压平衡对室温波动和热泵性能的影响。该试验以满量程的几乎零能量建筑测试设施进行，包括地板加热和空到水热泵。我们测量室和地板温度并监测热泵电力使用和热输出。房间的热平衡受到内部收益的干扰，将几个房间引入周期。结果表明，室温波动略微增加，不平衡系统，然而，在所有测试过程中，夜间的平均温度波动低于0.2°C，因此两个系统表现良好。我们确定了在不平衡系统的情况下测量更高COP的热泵性能的负面影响。结果允许得出结论，在研究具有一个歧管的系统和相对较小的环路长度差异的情况下，平衡对系统性能的影响可以忽略不计。但是，应在更不利的条件下进一步研究该话题。

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