Performance Analysis of an Integrated Energy Storage and Energy Upgrade Thermochemical Solid–gas Sorption System for Seasonal Storage of Solar Thermal Energy
MetadataShow full item record
An innovative dual-mode thermochemical sorption energy storage method is proposed for seasonal storage of solar thermal energy with little heat losses. During the charging phase in summer, solar thermal energy is stored in form of chemical bonds resulting from thermochemical decomposition process, which enables the stored energy to be kept several months at ambient temperature. During the discharging phase in winter, the stored thermal energy is released in the form of chemical reaction heat resulting from thermochemical synthesis process. Thermodynamic analysis showed that the advanced dual-mode thermochemical sorption energy storage is an effective method for the long-term seasonal storage of solar energy. A coefficient of performance (COPh) of 0.6 and energy density higher than 1000 kJ/kg of salt can be attained from the proposed system. During the discharging phase at low ambient temperatures, the stored thermal energy can be upgraded by use of a solid–gas thermochemical sorption heat transformer cycle. The proposed thermochemical sorption energy storage has distinct advantages over the conventional sensible heat and latent heat storage, such as higher energy storage density, little heat losses, integrated energy storage and energy upgrade, and thus it can contribute to improve the seasonal utilization of solar thermal energy.
Showing items related by title, author, creator and subject.
A Target‐oriented Solid‐gas Thermochemical Sorption Heat Transformer for Integrated Energy Storage and Energy Upgrade Kiplagat, J.K.; Li, T.; Wang, R. (Wiley, 2013-04-01)An innovative target-oriented solid-gas thermochemical sorption heat transformer is developed for the integrated energy storage and energy upgrade of low-grade thermal energy. The operating principle of the proposed energy ...
Micro-level wood energy planning for Kiambu, Thika and Maragwa districts: a case study for decentralised wood energy plan in Kenya Githiomi, Kabucho Joseph (2011-07-28)Wood energy provides 70% of Kenya's national energy needy and is expected to continue as the country's main source of energy for the foreseeable future. However, despite the importance of wood energy in the economic ...