水体型太阳能跨季节储热技术简介

A Technical Introduction of Water Pit for Long-term Seasonal Solar Thermal Energy Storage

太阳能资源总量丰富、清洁且分布范围广泛,但也存在能量密度低、不连续、辐照量季节性差异大的问题。水体型太阳能跨季节储热技术是实现太阳能"夏热冬用",解决太阳能在时、空间上的供需不匹配问题,推进太阳能连续利用和实现"零碳采暖"的重要技术手段之一。该技术的中心思想是将非采暖季收集的太阳能以热能的形式储存在地下水体中,供采暖季节使用。采用该技术一方面能够解决太阳能集热器在非采暖季的闲置问题,另一方面可以在复杂的天气情况下实现全天候供暖,从而提高太阳能供热的保证率。简要介绍了太阳能跨季节储热水体基本原理、应用案例、成本分析等内容,并对跨季节储热水体目前存在的主要问题和未来的研究方向进行了分析。

Although the total amount of solar energy resources is abundant,clean and widely distributed,there are also problems such as low energy density,discontinuity and large seasonal differences of radiation amount.Water pit for seasonal solar thermal energy storage is one of the important technical means to realize"solar heat stored in summer is utilized in winter",solve the problem of the mismatch between the supply and demand of solar energy in time and space,promote the continuous use of solar energy and realize"zero carbon heating".The key idea of this technology is to store the solar energy collected in non-heating seasons in the form of thermal energy in the water pit for spacing heating in winter.On the one hand,this technology solves the idle problem of solar collector in non-heating season,and on the other hand,it realize all-weather heating under complicated weather conditions,thus achieving a high guarantee rate of solar heating.The basic principles,application cases,cost analysis and other content of water pit for seasonal heat storage were briefly introduced,and the current main problems and future research directions were analyzed.