Development of a Hybrid House with the Photovoltaik System and Earth Heat Strage System

本项目的目的是研究利用夜间剩余电力的地热蓄热系统和光伏发电系统在小型建筑和住宅中的应用，可以减少多少白天的高峰电力需求。我们在熊本市建造了一座所谓的“能源生产节约屋”。自1994年以来，我们一直在进行这项研究。该项目的研究结果如下：给出了1996-1997年的发电效率结果，对不同天气条件下光伏发电系统的发电量进行了回归分析，在检验了上述实验结果后，估算出地源蓄热系统的总效率约为制冷机组夜间用电量的1.5倍。很明显，地球储热系统是白天空间供暖或制冷的热源。对于住宅或小型建筑物的电力用户，由于午夜电价较低，因此可以降低用电成本。此外，该系统还缓解了白天高峰时段城市电网的负荷。

The purpose of this project is to investigate how much peak electric demand in the day that is cut down by applying earth heat storage system using surplus electricity at night and photovoltaik system to small size buildings and residences. We constructed a residence so call "the Energy Producing & Saving House" in Kumamoto City. We have been carrying out this study since 1994. The results obtained at this project are as follows ;The results of electric generation efficiency during the period from 1996 to 1997 were presented.Regression Analysis was carried out to predict electric generation of the PV system under various weather conditions.After examining the results of the experiments mentioned above, the overall efficiency of the earth heat storage system is estimated to be approximately 1.5 times of electrical energy consumption of the chilling unit at night. It became clear, that the earth heat storage system serves as a heat source for space heating or cooling during daytime. For electlical power consumer In residences or small-scale buildings, the electricity costs can be reduced due to the lower user rate at midnight. Moreover, the system also alleviates the load on the city's power grid during daytime peak periods.