Load Reduction Potential of Tea Production Energy System Based on Transcritical CO2 Heat Pump

doi:10.11930/j.issn.1004-9649.202104079

Abstract

Abstract: The fossil energy equipment in rural industry has been gradually replaced by electric energy technologies, which, however, causes increasing fluctuation of rural power load and concentrated high load in some periods. In order to solve the above-said problem, the low-grade clean energy has been applied to tea production in rural areas, and the transcritical CO₂ heat pump tea drying technology is proposed according to the technical requirements of the whole-process tea drying. Taking a tea production village for a case study, an analysis is made on the annual daily power consumption and the daily load for tea production in its representative village. The results show that the load can be reduced to 39.6%~46.8% of the original load after using CO₂ heat pump tea drying, and the ratio of peak load to normal load can decrease from 13.6 to 5.4~6.2. The application of transcritical CO₂ heat pump in production of farm produce can effectively relieve the power supply pressure in rural areas.

Key words: rural power grid, clean energy utilization, load reduction, heat pump tea drying technology, case study

ZHOU Anren, WANG Jianrong, MA Zhiquan, LI Weilin. Load Reduction Potential of Tea Production Energy System Based on Transcritical CO₂Heat Pump[J]. Electric Power, 2022, 55(6): 154-160,171.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202104079

https://www.electricpower.com.cn/EN/Y2022/V55/I6/154

References

[1] 中华人民共和国农业农村部. 全国乡村产业发展规划(2020—2025年)[EB/OL]. (2020-07-09)[2021-04-30]. http://www.moa.gov.cn/xw/zwdt/202007/t20200717_6348847.htm.
[2] 赵贤龙. 推动农村电气化服务乡村振兴战略[J]. 农村电工, 2020, 28(9): 8
[3] 吴彬, 李艳芳, 金志凤. 影响安吉白茶产量与品质的灾害性天气分型及分析研究[J]. 中国农学通报, 2018, 34(13): 137–143
WU Bin, LI Yanfang, JIN Zhifeng. The classification and analysis of disastrous weather affecting the yield and quality of Anji white tea[J]. Chinese Agricultural Science Bulletin, 2018, 34(13): 137–143
[4] 田廓. 基于电网投资视角的省级电网输配电价定价办法解析及投资优化策略[J]. 智慧电力, 2020, 48(5): 7–13
TIAN Kuo. Provincial power grid enterprise transmission and distribution price method analysis & investment optimization policy based on perspective of grid investment[J]. Smart Power, 2020, 48(5): 7–13
[5] 叶琳浩, 杨雄平, 刘丽媛, 等. 基于对象选优的配电网可靠性提升投资方法[J]. 电力科学与技术学报, 2020, 35(4): 84–90
YE Linhao, YANG Xiongping, LIU Liyuan, et al. A reliability promotion investment method for distribution network based on optimized selection of executive object[J]. Journal of Electric Power Science and Technology, 2020, 35(4): 84–90
[6] 徐文涛, 李明轩. 园区综合能源服务利益方运营关系和经营战略[J]. 中国电力, 2021, 54(4): 151–157
XU Wentao, LI Mingxuan. Operation relationship and business strategy of stakeholders of park-level integrated energy services[J]. Electric Power, 2021, 54(4): 151–157
[7] XU Q, HU K L, WANG X L, et al. Carbon footprint and primary energy demand of organic tea in China using a life cycle assessment approach[J]. Journal of Cleaner Production, 2019, 233: 782–792.
[8] 黄慕谦. 木材燃烧原理与制茶柴灶操作技术[J]. 福建茶叶, 1985, 7(1): 16–18
[9] 吴晓强, 李亚莉, 周红杰, 等. 基于模糊PID的茶叶烘干机恒温控制系统研究[J]. 食品与机械, 2015, 31(4): 111–113,255
WU Xiaoqiang, LI Yali, ZHOU Hongjie, et al. Research on control system of tea constant temperature drying machine based on fuzzy PID[J]. Food & Machinery, 2015, 31(4): 111–113,255
[10] 刘志勇, 唐成林, 刘秀凤. 电能替代促进传统制茶工艺转型[J]. 大众用电, 2019, 34(7): 20
[11] 张运洲, 鲁刚, 王芃, 等. 能源安全新战略下能源清洁化率和终端电气化率提升路径分析[J]. 中国电力, 2020, 53(2): 1–8
ZHANG Yunzhou, LU Gang, WANG Peng, et al. Analysis on the improvement path of non-fossil energy consumption proportion and terminal electrification rate under the new energy security strategy[J]. Electric Power, 2020, 53(2): 1–8
[12] 姚远, 廉永旺, 王显龙, 等. 太阳能-热泵联合茶叶烘焙装置的创新设计与实验研究[J]. 新能源进展, 2017, 5(1): 47–55
YAO Yuan, LIAN Yongwang, WANG Xianlong, et al. Experimental study on an innovative hybrid solar heat pump system for tea drying[J]. Advances in New and Renewable Energy, 2017, 5(1): 47–55
[13] MINH N P, TUOI N H, OANH T T K, et al. Investigation of heat pump drying for herbal passion flower (Passiflora Foetida) tea production[J]. Journal of Global Pharma Technology, 2018, 10(5): 455–461.
[14] 宋崇明, 徐彤, 田雪沁, 等. 提升调峰能力的机组供热改造方式优化研究[J]. 中国电力, 2019, 52(7): 132–140
SONG Chongming, XU Tong, TIAN Xueqin, et al. Optimization and operation research on the unit heating retrofit to improve peak-load regulation capability[J]. Electric Power, 2019, 52(7): 132–140
[15] 张鹏, 吴小华, 张振涛, 等. 热泵干燥技术及其在农特产品中的应用展望[J]. 制冷与空调, 2019, 19(7): 65–71
ZHANG Peng, WU Xiaohua, ZHANG Zhentao, et al. Heat pump drying technology and its application prospects in agricultural special products[J]. Refrigeration and Air-Conditioning, 2019, 19(7): 65–71
[16] 张金生. 太阳能塔式聚光集热系统与燃煤发电耦合设计[J]. 中国电力, 2020, 53(2): 150–155
ZHANG Jinsheng. Coupling design of tower concentrated solar power system and coal-fired power generation[J]. Electric Power, 2020, 53(2): 150–155
[17] 魏泽辉, 高世杰, 闫素英, 等. 基于极差分析与费用年值法的太阳能-空气源热泵互补供热系统的正交优化[J]. 可再生能源, 2019, 37(8): 1146–1151
WEI Zehui, GAO Shijie, YAN Suying, et al. Orthogonal experimental of the solar heating system assisted with air source heat pump based on annual cost and solar fraction[J]. Renewable Energy Resources, 2019, 37(8): 1146–1151
[18] 明廷玉, 李保国. 太阳能与热泵联合干燥茶叶的应用研究[J]. 太阳能学报, 2017, 38(10): 2730–2736
MING Tingyu, LI Baoguo. Application research of combined drying tea with solar energy and heat pump system[J]. Acta Energiae Solaris Sinica, 2017, 38(10): 2730–2736
[19] 王继飞, 王永星, 杨宇静, 等. 光伏电站并入农配网对地区电网的影响[J]. 中国电力, 2018, 51(6): 150–154
WANG Jifei, WANG Yongxing, YANG Yujing, et al. Analysis the impact of photovoltaic power station's integration into rural distribution network[J]. Electric Power, 2018, 51(6): 150–154
[20] 许寅, 李佳旭, 王颖, 等. 考虑光伏出力不确定性的园区配电网日前运行计划[J]. 电力自动化设备, 2020, 40(5): 85–94,106
XU Yin, LI Jiaxu, WANG Ying, et al. Day-ahead operation plan for campus distribution network considering uncertainty of photovoltaic output[J]. Electric Power Automation Equipment, 2020, 40(5): 85–94,106
[21] 刘向军, 周行洁, 刘迪, 等. 面向新能源消纳的热水器集群精细化均衡控制[J]. 电力自动化设备, 2020, 40(1): 52–58
LIU Xiangjun, ZHOU Xingjie, LIU Di, et al. Refined equilibrium control of electric water heater clusters for accommodation of renewable energy sources[J]. Electric Power Automation Equipment, 2020, 40(1): 52–58
[22] 叶祖樑, 王驿凯, 潘祖栋, 等. 空气源跨临界CO₂热泵中回热器影响的研究[J]. 西安交通大学学报, 2019, 53(5): 1–8
YE Zuliang, WANG Yikai, PAN Zudong, et al. A study on the effect of the internal heat exchanger in an air-source transcritical CO₂ heat pump system[J]. Journal of Xi'an Jiaotong University, 2019, 53(5): 1–8
[23] 韩宗伟, 蒋文兵, 刘乾坤. 严寒地区CO₂热泵热水器运行性能模拟研究[J]. 可再生能源, 2017, 35(6): 940–948
HAN Zongwei, JIANG Wenbing, LIU Qiankun. Performance simulation of CO₂ heat pump water heater in severe cold areas[J]. Renewable Energy Resources, 2017, 35(6): 940–948
[24] WHITE S D, YARRALL M G, CLELAND D J, et al. Modelling the performance of a transcritical CO₂ heat pump for high temperature heating[J]. International Journal of Refrigeration, 2002, 25(4): 479–486.
[25] 汪蓓, 舒娜, 陆安霞, 等. 不同杀青温度对绿茶香型形成的影响[J]. 食品与发酵工业, 2020, 46(4): 197–203
WANG Bei, SHU Na, LU Anxia, et al. Aroma formation of green tea effected by different pan-fire temperature[J]. Food and Fermentation Industries, 2020, 46(4): 197–203
[26] 蔺志远, 施江, 谭俊峰, 等. 提香温度对绿茶(香茶)干燥效能及风味品质的影响[J]. 食品科学, 2020, 41(23): 153–158
LIN Zhiyuan, SHI Jiang, TAN Junfeng, et al. Effect of drying temperature on drying efficiency, energy consumption and flavor quality of xiangcha, a kind of green tea[J]. Food Science, 2020, 41(23): 153–158

Load Reduction Potential of Tea Production Energy System Based on Transcritical CO₂Heat Pump

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