新型熔盐结合吸收式热泵大温差储能供暖系统的研究

Study on a New Large Temperature Difference Energy Storage Heating System Using Molten Salt and Absorption Heat Pump

随着供热需求的不断上升及燃煤燃气等传统化石能源燃烧对空气质量的严重影响,清洁先进的供暖技术越来越受到各用热行业的关注,尤其在各级地方政府下发关停不达标的燃煤小锅炉政策后,"煤改电"储能技术顺应时代要求应运而生。本文着重介绍了一种新型熔盐结合吸收式热泵谷电储能供暖技术,此技术充分利用熔盐储能的优势,同时结合吸收式热泵可利用低温热源的特点,不仅提高了储能介质的使用温区,减小了储热系统的占地面积,还解决了常规二元熔盐储能供暖防凝及换热温差大等一系列问题,是有效解决"煤改电"供暖的重要技术。

With the rising demand for heating and the serious impacts of coal,gas and other traditional fossil fuel burning on air quality,advanced clean heating technology is getting increasingly more attention from various heat industries.Especially after the local governments at all levels issued the policy of shutting down the small coal-fired boilers that failed to meet the standards,the "coal-to-electricity"energy storage technology came into being in response to the requirements of the times.This paper introduced a new off-peak electricity storage heating technology using molten salt and absorption heat pump.This technology makes full use of the advantages of molten salt in energy storage,and combines the characteristics of absorption heat pump that can use low-temperature heat source,not only expanding the operating temperature range for energy storage medium and reducing the floor area of the heat storage system, but also solving series of problems of anti-condensation and large heat exchange temperature difference for energy storage heating using conventional binary molten salt.It is an important technology to effectively solve the difficulty of "coal to electricity"heating.