Seasonal solar thermal energy storage using thermochemical sorption in domestic dwellings in the UK

Ma, Zhiwei; Bao, Huashan; Roskilly, Anthony Paul

doi:10.1016/j.energy.2018.10.066

Cited by 41 publications

(12 citation statements)

References 15 publications

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“…From the Hottel‐Whillier steady‐state heat transfer model, 49 the thermal efficiency equation is obtained. After entering the solar collector, the effective heat intercepted is calculated according to Equations ), 16 and the heat transferred by the heat transfer medium is obtained.

A_{a} = \frac{86400 \cdot Q_{H} f}{J_{T} η ((), 1 - η_{L})}

η = η_{0} + a_{1} \frac{T_{i} - T_{a}}{G_{i}} - a_{2} \frac{{((), T_{i} - T_{a})}^{2}}{G_{i}}

…”

Section: Analysis Methodsmentioning

confidence: 99%

“…Recent research shows that thermochemical energy storage is a feasible and potential storage method, 14 on account of its high thermal energy storage density, low volume requirements, long storage time, and less heat loss 15 . Therefore, in recent years, it has received increasingly more attention in the application area of solar energy 16‐20 . Researches on thermochemical materials are mainly concentrated in several categories: methane/carbon dioxide reforming systems, 21 metal oxide systems, 22,23 hydrated salt systems, 24,25 and metal hydroxide systems 26‐34 .…”

Section: Introductionmentioning

confidence: 99%

“…In comparison to other applications, a relatively few researchers have studied the application of the thermochemical seasonal solar energy storage in domestic heating. Ma et al 16 studied the potential of the seasonal solar thermal energy storage system using ammonia‐based chemisorption for domestic application in the United Kingdom. CaCl 2 /NH 3 , BaCl 2 /NH 3, and NaBr/NH 3 were selected as the chemisorption pairs to compare their feasibility in the solar district heating system with seasonal storage through numeric simulation.…”

Section: Introductionmentioning

confidence: 99%

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Simulation and analysis of thermochemical seasonal solar energy storage for district heating applications in China

Huai

et al. 2020

Int J Energy Res

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Summary Thermochemical energy storage, a promising candidate for seasonal solar thermal energy storage, offers an economic solution to mitigate the use of fossil fuels and CO2 emissions due to its large storage density and almost zero‐loss long‐term storage. The present article explored the potential of the thermochemical seasonal energy storage system using MgO/Mg(OH)2 system for solar district heating applications in China. The solar district heating model with thermochemical seasonal energy storage system, including the parabolic trough solar collector and a chemical reactor, has been built. The dynamic charging/discharging performance of the seasonal solar thermal energy storage system has been simulated and analyzed by using the real weather data and the practical domestic heating demand. The optimal parameters of the equipment have been identified. And the comparison of the performances between thermochemical seasonal energy storage system and the conventionally used water storage tank system has been carried out for various areas of China. The results indicate that the stored thermochemical energy is able to contribute 94.6% of heating demand in the discharging stage, demonstrating the application potential of MgO/Mg(OH)2 thermochemical energy storage system in China. The needed solar collector areas of the seasonal thermochemical energy storage system decrease by up to 2/3 compared with those of a water storage tank system in the condition of the similar storage system volume. The advantage of seasonal thermochemical energy storage is more obvious for the case of region with abundant solar energy supply.

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A_{a} = \frac{86400 \cdot Q_{H} f}{J_{T} η ((), 1 - η_{L})}

η = η_{0} + a_{1} \frac{T_{i} - T_{a}}{G_{i}} - a_{2} \frac{{((), T_{i} - T_{a})}^{2}}{G_{i}}

…”

Section: Analysis Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation and analysis of thermochemical seasonal solar energy storage for district heating applications in China

Huai

et al. 2020

Int J Energy Res

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“…Compounds X and Y may be stored separately when the energy is stored, depending on the nature of the compounds and the chemical reactions they involve [38,39]. This storage can be in different forms: either relative to physisorption in adsorption grids (adsorption) or relative to absorption in absorbent solutions or also relative to chemical reactions as chemical potential.…”

Section: The Different Processes For Tchsmentioning

confidence: 99%

Recent Status and Prospects on Thermochemical Heat Storage Processes and Applications

Gbenou

Fopah-Lele

Wang

2021

Entropy

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Recent contributions to thermochemical heat storage (TCHS) technology have been reviewed and have revealed that there are four main branches whose mastery could significantly contribute to the field. These are the control of the processes to store or release heat, a perfect understanding and designing of the materials used for each storage process, the good sizing of the reactor, and the mastery of the whole system connected to design an efficient system. The above-mentioned fields constitute a very complex area of investigation, and most of the works focus on one of the branches to deepen their research. For this purpose, significant contributions have been and continue to be made. However, the technology is still not mature, and, up to now, no definitive, efficient, autonomous, practical, and commercial TCHS device is available. This paper highlights several issues that impede the maturity of the technology. These are the limited number of research works dedicated to the topic, the simulation results that are too illusory and impossible to implement in real prototypes, the incomplete analysis of the proposed works (simulation works without experimentation or experimentations without prior simulation study), and the endless problem of heat and mass transfer limitation. This paper provides insights and recommendations to better analyze and solve the problems that still challenge the technology.

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“…Few studies analysed the impact of different climatic conditions on seasonal sorption systems. Ma et al [16] studied the feasibility of using sensible, latent, and thermochemical storage technologies to supply the space heat- The sorption storage process is based on the reaction between a sorbate, sometimes referred to as working fluid (e.g., water, ammonia, alcohols) and a sorbent, which can be either a solid or a liquid solution. The interaction between the two components is either physical or through weak chemical reactions [5].…”

Section: Introductionmentioning

confidence: 99%

Solar-Driven Sorption System for Seasonal Heat Storage under Optimal Control: Study for Different Climatic Zones

et al. 2022

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Solar thermal energy coupled to a seasonal sorption storage system stands as an alternative to fossil fuels to supply residential thermal energy demand in climates where solar energy availability is high in summer and low in winter, matching with a high space heating demand. Sorption storage systems usually have a high dependency on weather conditions (ambient temperature and solar irradiation). Therefore, in this study, the technical performance of a solar-driven seasonal sorption storage system, using an innovative composite sorbent and water as working fluid, was studied under three European climates, represented by: Paris, Munich, and Stockholm. All scenarios analyses were simulation-based under optimal system control, which allowed to maximize the system competitiveness by minimizing the system operational costs. The optimal scenarios profit from just 91, 82 and 76% of the total sorption system capacity, for Paris, Munich, and Stockholm, respectively. That means that an optimal control can identify the optimal sorption storage size for each location and avoid oversizing in future systems, which furthermore involves higher investment costs. The best coefficient of performance was obtained for Stockholm (0.31), despite having the coldest climate. The sorption system was able to work at minimum temperatures of −15 °C, showing independence from ambient temperature during its discharge. In conclusion, a seasonal sorption system based on selective water materials is suitable to be integrated into a single-family house in climates of central and northern Europe as long as an optimal control based on weather conditions, thermal demand, and system state is considered.

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Seasonal solar thermal energy storage using thermochemical sorption in domestic dwellings in the UK

Cited by 41 publications

References 15 publications

Simulation and analysis of thermochemical seasonal solar energy storage for district heating applications in China

Simulation and analysis of thermochemical seasonal solar energy storage for district heating applications in China

Recent Status and Prospects on Thermochemical Heat Storage Processes and Applications

Solar-Driven Sorption System for Seasonal Heat Storage under Optimal Control: Study for Different Climatic Zones

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