集成双压冷凝与双压蒸发技术的增强型卡诺电池系统

doi:10.19799/j.cnki.2095-4239.2025.0017

储能科学与技术 ›› 2025, Vol. 14 ›› Issue (5): 2035-2042.doi: 10.19799/j.cnki.2095-4239.2025.0017

集成双压冷凝与双压蒸发技术的增强型卡诺电池系统

陈珣¹(), 王敦敦², 胡晓³, 李敏霞⁴, 越云凯⁵

^1.国网湖南省电力有限公司电力科学研究院，湖南长沙 410208
^2.湖南省湘电试验研究院有限公司，湖南长沙 410000
^3.中国电力科学研究院有限公司，北京 100192
^4.天津大学机械工程学院，天津 300354
^5.中国科学院理化技术研究所，北京 100190

收稿日期:2025-01-06 修回日期:2025-01-28 出版日期:2025-05-28 发布日期:2025-05-21
通讯作者: 陈珣 E-mail:chenxun_heptri@163.com
作者简介:陈珣（1983—），男，硕士，正高级工程师，研究方向为热质储能，E-mail：chenxun_heptri@163.com。
基金资助:
国家自然科学基金(52276016);湖南省湘电试验研究院有限公司科技项目(XDKY-2024-03)

Enhanced Carnot battery system with integrated dual pressure condensation/evaporation technologies

Xun CHEN¹(), Dundun WANG², Xiao HU³, Minxia LI⁴, Yunkai YUE⁵

^1.State Grid Hunan Electric Power Co. , Ltd. , Research Institute, Changsha 410208, Hunan, China
^2.Hunan Xiangdian Test&Research Institute Co. , Ltd. , Changsha 410000, Hunan, China
^3.China Electric Power Research Institute Ltd. , Beijing 100192, China
^4.School of Mechanical Engineering, Tianjin University, Tianjin 300354, China
^5.Institute of Physical and Chemical Technology, Chinese Academy of Sciences, Beijing 100190, China

Received:2025-01-06 Revised:2025-01-28 Online:2025-05-28 Published:2025-05-21
Contact: Xun CHEN E-mail:chenxun_heptri@163.com

摘要/Abstract

摘要：

鉴于传统卡诺电池(CB)系统存在往返效率低下的局限性，本文以传统卡诺电池系统为基础，提出了双压冷凝/蒸发卡诺电池(DCB)系统。DCB系统引入了双压蒸发有机朗肯循环(DORC)技术与双压冷凝热泵(DHP)技术，降低了CB系统换热过程的不可逆损失。通过系统建模分析，获得了DCB系统在不同工况下的运行特性，并探讨了其可行性。研究结果表明，DHP的能效系数和DORC模块的发电效率会随着中间出水温度的增加呈现出先增加后减少的趋势。在不同的热源温度和环境温度条件下，DCB系统的往返效率均高于CB系统。以哈尔滨、南京和广州3个城市作为研究对象展开分析，相较于CB系统，DCB系统在哈尔滨全年往返效率提升幅度最大，可达到70.5%。DCB系统在广州运行收益最高，相较于CB系统，在每日发电量为100 kWh工况下，DCB系统全年收入提高了18077 CNY。本文提出的DCB系统有效地改善了CB系统低往返效率的问题，在平衡电网负荷以及促进可再生能源高效利用方面具有巨大的应用潜力，可为“双碳”战略下可再生能源的储能提供一种更为高效的解决方案。

关键词: 卡诺电池, 双压蒸发, 双压冷凝, 可行性

Abstract:

To address the low round-trip efficiency of traditional Carnot battery systems, this study proposes a dual-pressure condensation/evaporation Carnot battery (DCB) system. This innovative system integrates dual-pressure evaporation organic Rankine cycle (DORC) and dual-pressure condensation heat pump (DHP) technologies, effectively reducing irreversible losses in the heat exchange process of the CB system. System modeling and analysis were conducted to evaluate the operating characteristics of the DCB system under varying conditions, exploring its feasibility. The results show that the energy efficiency coefficient of DHP and the power generation efficiency of the DORC module increase first and then decline as intermediate water temperature rises. Across varying heat sources and ambient temperatures, the round-trip efficiency of the DCB system is higher than that of the CB system. Taking Harbin, Nanjing, and Guangzhou as examples shows distinct benefits of the DCB. Harbin displayed the greatest improvement in annual round-trip efficiency, reaching 70.5%, while Guangzhou achieved the highest operational revenue. Under daily power generation conditions of 100 kWh, the annual revenue of the DCB system increases by 18077 RMB compared to the CB system. The proposed DCB system effectively addresses the low round-trip efficiency of CB systems and holds significant potential for balancing grid loads and promoting efficient utilization of renewable energy. It also offers a more efficient solution for renewable energy storage under the dual carbon strategy.

Key words: Carnot battery, dual pressure evaporation, dual pressure condensation, feasibility

中图分类号:

TB 657

陈珣, 王敦敦, 胡晓, 李敏霞, 越云凯. 集成双压冷凝与双压蒸发技术的增强型卡诺电池系统[J]. 储能科学与技术, 2025, 14(5): 2035-2042.

Xun CHEN, Dundun WANG, Xiao HU, Minxia LI, Yunkai YUE. Enhanced Carnot battery system with integrated dual pressure condensation/evaporation technologies[J]. Energy Storage Science and Technology, 2025, 14(5): 2035-2042.

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参数	数值	参考文献
压缩机等熵效率η_c	0.8	[16]
膨胀机等熵效率η_t	0.85	[16]
泵等熵效率η_p	0.7	[16]
过热度/℃	5	[22]
过冷度/℃	5	[22]
窄点温差/℃	5	[22]
高温水箱温度/℃	140	[23]
低温水箱温度/℃	80	[23]
发电机效率η_g	0.98	[23]
机械效率η_m	0.98	[23]

城市	哈尔滨	南京	广州
尖峰电价/(CNY/kWh)	1.3549	—	1.7519
高峰电价/(CNY/kWh)	1.1358	1.3161	1.4071
平时电价/(CNY/kWh)	0.7605	0.7872	0.8390
低谷电价/(CNY/kWh)	0.4005	0.3557	0.3360

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集成双压冷凝与双压蒸发技术的增强型卡诺电池系统

Enhanced Carnot battery system with integrated dual pressure condensation/evaporation technologies

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