Investigation on a Vermiculite-Based Solar Thermochemical Heat Storage System for Building Applications
Investigation on a Vermiculite-Based Solar Thermochemical Heat Storage System for Building Applications
复制标题
DOI：
10.5334/fce.153
复制
发表时间：
2022
影响因子：
--
通讯作者：
Yanan Zhang;Ziwei Chen;C. Kutlu;Yuehong Su;S. Riffat
中科院分区：
文献类型：
--
作者：
Yanan Zhang;Ziwei Chen;C. Kutlu;Yuehong Su;S. Riffat
工业加工和建筑部门（例如，用于空间和水加热）负责用于加热的总能量消耗的大部分。虽然化石燃料仍然主导着供热部门，但可再生能源供热技术最近已得到广泛部署。热化学储能（TES）是解决可再生能源供应与最终用户需求之间不匹配的一项有前途的先进技术。本文提出了一种新型的基于蛭石的太阳能热化学储热（VS-THS）系统，用于家庭空间供暖应用，该系统还可以克服不透明的挑战，实现长期的太阳能储存。建立了一个小规模的原型来评估所提出的系统的储能性能，该系统使用专利的ChainStore面板来容纳基于蛭石的复合材料。ChainStore布置的独特设计提供了巨大的热量和质量传递，并在建筑物能源需求变化的情况下为系统提供了良好的灵活性。由于浸渍MgSO 4和CaCl 2的蛭石基吸附剂具有较低的再生温度（63 °C）和较高的储能密度（253.8kWh/m3），因此被选作THS复合材料。实验结果表明，所提出的VS-THS用于家用空间供暖是可行的，最高供热温度为37.6 °C，反应过程中系统COP为.所提出的VS-THS概念可以针对不同的建筑应用进行调整。
Industrial processes and the building sector (e.g., for space and water heating) are responsible for the majority of the total energy consumed for heat. Although fossil fuels remain to dominate the heating sector, renewable heating technologies have been lately widely deployed. Thermochemical energy storage (TES) can be a promising advanced technology in addressing the mismatch between renewable energy supplies and the end-user’s demand. In this paper, a novel Vermiculite-based Solar Thermochemical Heat Storage (VS-THS) system was proposed for domestic space heating applications, which could also overcome the intermittency challenges and realise long-term solar energy storage. A small-scale prototype was set up to evaluate the energy storage performance of the proposed system using a patented ChainStore panel to accommodate vermiculite-based composite. The unique design of the ChainStore arrangement offers great heat and mass transfer and good flexibility for system resizing in the case of varying the building energy demand. Due to the low regeneration temperature (63 °C) and high energy storage density (253.8 kWh/m 3 ) of the vermiculite-based adsorbent impregnated with MgSO 4 and CaCl 2 , it was chosen as the THS composite in the experiments. The experimental results showed that the proposed VS-THS is feasible for domestic space heating, with the highest space heating supply temperature of 37.6 °C, and the system COP in the reaction process is In addition, the results also demonstrate that the composite of vermiculite impregnated with MgSO 4 and CaCl 2 , with a good water adsorption performance. This proposed concept of VS-THS could be sized for different building applications.