Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies
Thermal battery plays an important role in renewable energy utilization towards carbon neutrality. The novel absorption thermal battery (ATB) has excellent performance but suffers from serious capacity attenuation. To address this problem, two capacity regulation methods, i.e., variable solution flo...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2023-06-01
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| Series: | Energy and Built Environment |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666123322000083 |
| _version_ | 1797860184835489792 |
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| author | Zhixiong Ding Wei Wu |
| author_facet | Zhixiong Ding Wei Wu |
| author_sort | Zhixiong Ding |
| collection | DOAJ |
| description | Thermal battery plays an important role in renewable energy utilization towards carbon neutrality. The novel absorption thermal battery (ATB) has excellent performance but suffers from serious capacity attenuation. To address this problem, two capacity regulation methods, i.e., variable solution flow and variable cooling water flow, are proposed to achieve a demanded discharging rate. The effects of the two regulation strategies on the dynamic discharging characteristics and overall storage performance are comparatively investigated. To demonstrate the adjustability of the output capacity, several stable discharging rates are successfully maintained by the proposed methods. To maintain a higher discharging rate, the stable discharging time has to be sacrificed. As the demanded output increased from 0.5 kW to 6.0 kW, the stable discharging time decreased from 781.8 min to 27.9 min under variable solution flow and from 769.9 min to 30.7 min under variable cooling water flow. With the increase of solution or water flow rate, the energy storage density is improved, while the energy storage efficiency is slightly increased first and decreased later. The regulation method of variable water flow shows relatively lower energy storage efficiency due to the larger pump power. This study could facilitate reasonable development and application of ATB cycles. |
| first_indexed | 2024-04-09T21:42:20Z |
| format | Article |
| id | doaj.art-d936c2924b5c42168690fa09192d19f1 |
| institution | Directory Open Access Journal |
| issn | 2666-1233 |
| language | English |
| last_indexed | 2024-04-09T21:42:20Z |
| publishDate | 2023-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Energy and Built Environment |
| spelling | doaj.art-d936c2924b5c42168690fa09192d19f12023-03-26T05:19:07ZengKeAi Communications Co., Ltd.Energy and Built Environment2666-12332023-06-0143341353Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategiesZhixiong Ding0Wei Wu1School of Energy and Environment, City University of Hong Kong, Hong Kong, ChinaCorresponding author.; School of Energy and Environment, City University of Hong Kong, Hong Kong, ChinaThermal battery plays an important role in renewable energy utilization towards carbon neutrality. The novel absorption thermal battery (ATB) has excellent performance but suffers from serious capacity attenuation. To address this problem, two capacity regulation methods, i.e., variable solution flow and variable cooling water flow, are proposed to achieve a demanded discharging rate. The effects of the two regulation strategies on the dynamic discharging characteristics and overall storage performance are comparatively investigated. To demonstrate the adjustability of the output capacity, several stable discharging rates are successfully maintained by the proposed methods. To maintain a higher discharging rate, the stable discharging time has to be sacrificed. As the demanded output increased from 0.5 kW to 6.0 kW, the stable discharging time decreased from 781.8 min to 27.9 min under variable solution flow and from 769.9 min to 30.7 min under variable cooling water flow. With the increase of solution or water flow rate, the energy storage density is improved, while the energy storage efficiency is slightly increased first and decreased later. The regulation method of variable water flow shows relatively lower energy storage efficiency due to the larger pump power. This study could facilitate reasonable development and application of ATB cycles.http://www.sciencedirect.com/science/article/pii/S2666123322000083Absorption thermal batteryThermal energy storageCapacity regulationVariable flow rateAdjustable discharging rate |
| spellingShingle | Zhixiong Ding Wei Wu Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies Energy and Built Environment Absorption thermal battery Thermal energy storage Capacity regulation Variable flow rate Adjustable discharging rate |
| title | Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies |
| title_full | Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies |
| title_fullStr | Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies |
| title_full_unstemmed | Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies |
| title_short | Dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies |
| title_sort | dynamic discharging characteristics of absorption thermal battery under different capacity regulation strategies |
| topic | Absorption thermal battery Thermal energy storage Capacity regulation Variable flow rate Adjustable discharging rate |
| url | http://www.sciencedirect.com/science/article/pii/S2666123322000083 |
| work_keys_str_mv | AT zhixiongding dynamicdischargingcharacteristicsofabsorptionthermalbatteryunderdifferentcapacityregulationstrategies AT weiwu dynamicdischargingcharacteristicsofabsorptionthermalbatteryunderdifferentcapacityregulationstrategies |