Experimental investigation on a dual-mode thermochemical sorption energy storage system

Li, Tingxian; Wu, Si; Yan, Ting; Wang, Ruzhu; Zhu, Jingjing

doi:10.1016/j.energy.2017.08.073

Cited by 60 publications

(19 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In operation desorption was performed at a 157 °C at a condensation temperature of 21 °C resulting in a GTLD of 136 K. Sorption was performed at an Evaporation temperature of 10.6 °C and the average temperature reached was 58°C thus achieving a GTLs of 47.4 K. Figure 15 shows the respective operation diagrams. Closed fixed systems are often employed for dual mode systems, able to supply both heat and cold [74] or operating on other sorbates than water such as NH3 [75,76]. Yan et al also proposes a system with MnCl2 and NH3, with GTLD of 154 K and GTLS of 35 K [75].…”

Section: Closed Fixedmentioning

confidence: 99%

Sorption based long-term thermal energy storage – Process classification and analysis of performance limitations: A review

Fumey

Weber

Baldini

2019

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

In sorption heat storage, one of the sources of discrepancy between theoretical material based energy storage potential and resulting system performance is the choice of process type. In this paper, in order to understand this performance deviation, a sorption heat storage process categorisation is proposed. This is followed by a review of reported sorption systems categorised according to the proposed process classification. An analysis of the reported systems is then undertaken focusing on the ratio of resulting temperature gain in sorption (ad-or absorption) compared to required temperature lift in desorption. This measure is termed temperature effectiveness and enables a form of system performance evaluation in the broad landscape of sorption thermal energy storage demonstrators. It is argued that other performance parameters such as volumetric energy storage density and volumetric charge and discharge power density are not adequate for comparison due to the highly varying testing conditions applied. From the system evaluation, it is seen that best temperature effectiveness is generally found in a closed, transported process with the ability of single sorbent pass and true counter flow heat exchange. Highlights • There are four basic sorption thermal energy storage processes, open fixed, open transported, closed fixed and closed transported.• Temperature effectiveness, the ratio of resulting sorption temperature lift to required desorption temperature lift, is a universal means for sorption heat storage system performance comparison.• Closed transported sorption thermal energy storage systems show the best performance in respect to temperature effectiveness.

show abstract

Section: Closed Fixedmentioning

confidence: 99%

Sorption based long-term thermal energy storage – Process classification and analysis of performance limitations: A review

Fumey

Weber

Baldini

2019

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

show abstract

“…When the overall heat loss coefficient of the dwelling was 150 W/K and water inlet temperature to the solar collector was 40 °C, the critical solar collector area and storage capacity of a thermochemical sorption SSTES were in the range of 33.51-34.29 m 2 and 6073.25-6336.35 kWh respectively. Li et al [8,9] proposed a dual-mode ammonia chemisorption cycle for SSTES using two sets of reactor-condenser/evaporator units. During warm winter with relatively higher ambient temperature, ambient heat was used to evaporate ammonia and the ammonia vapour was adsorbed by the salt in reactor to discharge the stored heat; while in the cold winter, when one-stage chemisorption was not enough to deliver the heat at sufficient high temperature for space heating, the heat released from one ammonia chemisorption unit was used to evaporate the ammonia for the other chemisorption unit as the second-stage heat upgrading.…”

Section: Armentioning

confidence: 99%

“…The system featured a specific energy density of 1149 kJ/kg (material-based) and a storage efficiency of 0.58 when the charging heat temperature, ambient temperature and output temperature were at 150 °C, 15 °C and 30 °C respectively. The authors also gave two possible solutions to elevate the output temperature during discharging stage, one was using the concept proposed by Li et al [8,9] to upgrade the heat using two-stage adsorption, the other was introducing electricity to compress the desorbed low pressure ammonia to a higher pressure level which then can be adsorbed by the salt at relatively higher temperature.…”

Section: Armentioning

confidence: 99%

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

Bao

Roskilly

2019

Energy

View full text Add to dashboard Cite

The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.

show abstract

“…Li et al experimentally investigated dual‐mode thermochemical‐sorption energy system using for seasonal solar thermal‐energy storage. Sorption working pair has been expanded with graphite/strontium and chloride‐ammonia (SrCl 2 ‐NH 3 ).…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of seasonal solar‐energy storage in buildings

et al. 2019

View full text Add to dashboard Cite

Summary This paper presents seasonal‐energy storage of solar energy for the heating of buildings. We distinguish several types of seasonal storage, such as latent, sensible, and chemical storage, among which the thermochemical storage is used and analysed in this research. In the first part, a laboratory heat‐storage tank, which was made in the laboratory for heating, sanitary, and solar technology and air conditioning from the Faculty of Mechanical Engineering, University of Ljubljana, Slovenia, was presented. The experimental model was tested for charging and discharging mode. Two types of numerical models for sorption thermal‐energy storage exist, which are microscale and macroscale (integral). For microscale analysis, the analysis system (ANSYS) model can be used to simulate the behaviour in the adsorption reactor. On macroscale or integral scale, TRaNsient SYStem (TRNSYS) model was used to perform the operation of the storages on the yearly basis. In the second part the simulation of the underfloor heating system operation with a built‐in storage tank was carried out for two locations, Ljubljana and Portorož. Furthermore, the comparison between a thermochemical and sensible‐heat storage was performed with TRNSYS and Excel software. In this comparison, the focus was on the surface parameters of the SCs and volume of the thermal‐storage tank for the coverage of the energy demand for selected building. With this analysis, we would like to show the advantage of the thermochemical storage system, to provide greater coverage of the energy demand for the operation of the building, compared with the seasonal sensible‐heat storage (SSHS). Such a heat‐storage technology could, in the future, be a key contributor to the more environmentally friendly and more sustainable way of delivering energy needs for buildings.

show abstract

Experimental investigation on a dual-mode thermochemical sorption energy storage system

Cited by 60 publications

References 31 publications

Sorption based long-term thermal energy storage – Process classification and analysis of performance limitations: A review

Sorption based long-term thermal energy storage – Process classification and analysis of performance limitations: A review

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

Experimental and numerical analysis of seasonal solar‐energy storage in buildings

Contact Info

Product

Resources

About