Performance Analysis of Absorption Heat Pump with Exhaust Steam Heat Recovery and Its Influence on Peak Regulation Capability

doi:10.3969/j.issn.1000-7229.2016.04.021

Abstract

Abstract:

Heat recovery from exhaust steam based on absorption heat pump can be used for heating, which has remarkable energy saving effect. Taking a 300 MW direct air-cooled heating unit as an example, this paper constructs the calculation model for heating unit performance based on heat pump with exhaust steam heat recovery, analyzes the influence of heating load on the heating supply system with heat pump, and studies the peak regulation capability of the unit with heat pump heating supply system. The results show that the performance coefficient of absorption heat pump with heat recovery from exhaust steam is 1.73, and the exergy efficient of heat pump heating supply system increases by 15.6 % compared with that of the traditional system. The heat pump heating supply system can save extraction steam of 64.7 t/h, and the net power increment is 11.1 MW. With the increase of heating load, the recovery exhaust steam increases in heat pump heating supply system, which saves more extraction steam of turbines； while the net power increment increases and subsequently decreases. The peak regulation capability is improved by heat pump recovering heat from exhaust steam.

Key words: heat pump, exhaust steam, heat recovery, peak regulation

CLC Number:

TM 611

WANG Xuefeng,ZHANG Xuelei, LU Jiayong, WANG Jin. Performance Analysis of Absorption Heat Pump with Exhaust Steam Heat Recovery and Its Influence on Peak Regulation Capability[J]. Electric Power Construction, 2016, 37(4): 138-144.

References

［1］杨旭，周涛，汝小龙，等. 核电厂温排水余热综合利用模式研究［J］. 电力建设， 2013，34（6）： 56-59.
YANG Xu, ZHOU Tao, RU Xiaolong, et al. Comprehensive utilization mode of thermal discharge residual heat in nuclear power plants ［J］. Electric Power Construction 2013, 34（6）： 56-59.
［2］郭江龙，李琼，温燕，等. 电厂循环水余热利用工程中热泵制热性能系数测试不确定度分析［J］. 电力建设，2013，34（4）： 55-57.
GUO Jianglong, LI Qiong, WEN Yan, et al. Coefficient of performance test uncertainty analysis on heat pump of circulating water waste heat utilization project ［J］. Electric Power Construction, 2013, 34（4）： 55-57.
［3］LI Yan，FU Lin，ZHANG Shigang，et al.A new type of district heating system based on distributed absorption heat pumps［J］.Energy，2011（36）：4570-4576.
［4］LI Yan，FU Lin，ZHANG Shigang，et al.A new type of district heating method with co-generation based on absorption heat exchange （coah cycle）［J］.Energy Conversion and Management，2011，52（2）： 1200-1207.
［5］张学镭，陈海平. 回收循环水余热的热泵供热系统热力性能分析［J］. 中国电机工程学报，2013， 33（8）： 2-8.
ZHANG Xuelei, CHEN Haiping. Thermodynamic analysis of heat pump heating supply system with circulating water heat recovery［J］. Proceedings of the CSEE，2013，33（8）：2-8.
［6］KEIL C，PLURA S，RADSPIELER M，et al.Application of customized absorption heat pumps for utilization of low-grade heat sources［J］.Applied Thermal Engineering，2008，28（16）：2070-2076.
［7］LI Hanning，Russell N，Shari V，et al.Techno-economic feasibility of absorption heat pumps using wastewater as the heating source for desalination［J］.Desalination，2011（281）：118-127.
［8］宰相，张光.以电厂循环水为热泵低温热源的联产供热系统的冷端优化［J］.现代电力，2011，28（1）：62-65.
ZAI Xiang，ZHANG Guang.Optimization of cold end system of CHP with WSHP using circulating water of power plant［J］.Modern Electric Power，2011，28（1）：62-65.
［9］吕炜，陈晓峰，左川.循环水余热利用在火力发电厂的应用［J］.华北电力技术，2011（11）：27-28.
L Wei，CHEN Xiaofeng，ZUO Chuan.Utilization of recycled water waste heat in thermal power plant［J］.North China Electric Power，2011（11）：27-28.
［10］魏潘，张士杰，肖云汉.开式循环吸收式热泵系统变工况性能研究［J］.工程热物理学报，2009，30（7）：1081-1085.
WEI Pan，ZHANG Shijie，XIAO Yunhan.The off-design performance of open cycle absorption heater transformer ［J］.Journal of Engineering Thermophysics，2009，30（7）：1081-1085.
［11］BAKHTIARI B，FRADETTE L，LEGROS R，et al.A model for analysis and design of H2O-LiBr absorption heat pumps ［J］.Energy Conversion and Management，2011（52）：1439-1448.
［12］WOODS J，PELLEGRINO J，KOZUBAL E，et al.Design and experimental characterization of a membrane-based absorption heat pump［J］.Journal of Membrane Science，2011（378）：85-94.
［13］贾明生.溴化锂溶液的几个主要物性参数计算方程［J］.湛江海洋大学学报，2002，22（3）：52-58.
JIA Mingsheng.Several main calculating equations of properties parameter of LiBr-H2O［J］.Journal of Zhanjiang Ocean University，2002，22（3）：52-58.

[1]	ZHU Huan， CHENG Liang， CHEN Chen， ZHUO Zhenyu， CUI Bo， GONG Lijia， ZHANG Ning. Assessment Method for Grid-side Storage Demand under Multiple Application Scenarios [J]. Electric Power Construction, 2019, 40(9): 35-42.
[2]	YANG Pengpeng，ZHANG Xiuping，WANG Mingqiang，YANG Ming，ANG Fei，WANG Shibo. Optimal Operation of Wind-PV-ES Joint System Considering the Peak Regulation Capability [J]. Electric Power Construction, 2019, 40(9): 124-130.
[3]	LI Junhui1, ZHANG Jiahui1, Hu Dacheng1, LI Jianlin2, MA Huimeng2. Comparison and Analysis of Multi-Attribute and Multi-Objective Energy Storage System Working Conditions Suitability [J]. Electric Power Construction, 2018, 39(4): 2-.
[4]	LIN Ruizong. Research on Multiple Resource Dispatch Model in Power System with Large Scale Wind Power Integrated Considering Multi-stage State Transferring of Thermal Units [J]. Electric Power Construction, 2018, 39(10): 120-130.
[5]	MEI Tianhua, LI Lei, CHEN Jingwen. Shut-Down Peaking Market Mechanism of Zhejiang Coal-Fired Units Considering Import Power Allocation [J]. Electric Power Construction, 2016, 37(3): 117-123.
[6]	TIAN Xu, ZHANG Xiangcheng, BAI Zuoxia, MA Xue, TAO Xin, LI Nan, MIAO Miao. Characteristic Analysis and Effect Evaluation of Synergy Between Hydropower and Photovoltaic Power in Qinghai Province [J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(10): 67-72.
[7]	JIANG Liang, ZHANG Lingxia, ZHU Yadong， YU Lijun, WU Shuangying. Thermo-Economic Analysis of Evaporator in Organic Rankine Cycle System [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(9): 76-81.
[8]	YANG Xu， ZHOU Tao， RU Xiaolong， ZOU Wenzhong. Comprehensive Utilization Mode of Thermal Discharge Residual Heat in Nuclear Power Plants [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(6): 56-59.
[9]	GUO Jianglong，LI Qiong，WEN Yan，ZHAO Changcun. Coefficient of Performance Test Uncertainty Analysis on Heat Pump of Circulating Water Waste Heat Utilization Project [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(4): 55-57.
[10]	MA Lindong1， GE Zhiping， ZHANG Shicai， GUO Tao， ZHANG Shun， SHI Yaowu，XU Jingang. Active Peaking Technology based on High Energy-Consumption Enterprise Participating in Wind Power Accomodation in Power Grid [J]. ELECTRIC POWER CONSTRUCTION, 2013, 34(10): 102-106.
[11]	. Optimization of Waste Heat Utilization System of Slag Cooler of 300 MW CFB Air-cooling Heat Supply Units [J]. ELECTRIC POWER CONSTRUCTION, 2011, 32(1): 64-67.