This optimizes the utilization of district heat, which only comes into use if there is no solar heat in storage.
这一点强调了区域热能的利用，而且只会在没有太阳热能储蓄的时候才会启用。
Aiming at the domestic present situation on architectural utilization of solar energy, the building integrated with solar heat water systems and photovoltaic systems were analyzed.
针对我国目前太阳能在建筑上的利用现状，分析了建筑一体化的太阳能热水系统和太阳能光伏系统。
But the solar energy has intermittent and instability characteristics, so the heat storage material must be used to improve the utilization of solar energy to reduce the cost.
但是太阳能具有间歇性和不稳定性的特点，必须使用蓄热材料来提高太阳能的利用率、降低使用成本。
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