Case study on the integrated energy service project with newly installed heat pumps

doi:10.3969/j.issn.2097-0706.2022.01.010

Abstract

Abstract:

As the core factor affecting the energy-saving economy of an integrated energy service project,studying the configuration of a multi-energy complementary energy system is a crucial task in integrated energy services.The multi-energy complementary system is an extension of traditional distributed energy applications.It is a "regional energy internet" system that accommodates multiple energy resources,various outputs and transportation forms.The multi-energy complementary energy system can make an operation strategy based on user's cooling,heating and power demand,load characteristics and price of different energy.The strategy should fully consider the efficiency of a single unit and make a reasonable configuration that balances economic and environmental benefits.Taking a natural gas distributed energy system of an industrial park in northern China as an example,the operation mode,comprehensive energy utilization efficiency and economic benefits of the energy system is analyzed intensively by collecting and studying the data of cold,hot and electric loads of the park in the past three years.The analysis results demonstrates the necessity and economy of configuring air source heat pumps and flue gas waste heat recovery heat pumps in multi-energy complementary energy systems,which can provide a reference for the following regional multi-energy complementary energy systems.

Key words: distribution energy, integrated energy service, multi-energy complementation, air source heat pump, flue gas waste heat recovery heat pump, energy internet

CLC Number:

TK01

YU Li, XU Jingjing, MA Lanfang, WANG Youtian. Case study on the integrated energy service project with newly installed heat pumps[J]. Integrated Intelligent Energy, 2022, 44(1): 72-79.

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供能形式	供热量/GJ	COP	耗气/耗电	运行费/元
直燃机	1.00	0.938	31.57 m³	87.45^①
空气源热泵	1.00	2.400	115.74 kW·h	34.99^②
空气源热泵	1.00	2.400	115.74 kW·h	90.94^③

供能形式	供冷量/GJ	COP	耗气/耗电	运行费/元
直燃机	1.00	1.360	21.77 m³	53.35^①
空气源热泵	1.00	3.600^④	77.16 kW·h	23.33^②
空气源热泵	1.00	3.600^④	77.16 kW·h	60.63^③

项目		空气源热泵运行方案	余热机+直燃机运行方案
收入	售电收入	172.21^①	177.69^②
收入	售热收入	221.71	221.71
成本	购电费用	46.07	5.79
	供热机组耗电	50.05	0.00（机组厂用电扣除）
	供热耗气	0.00	157.01
收入-成本		297.81	236.60

项目		空气源热泵+直燃机运行方案	余热机+直燃机运行方案
收入	售电收入	172.21^①	177.69^②
收入	售热收入	221.71^③	221.71
成本	产业园用户购电	46.07	5.79
	供热机组耗电	37.54	0.00（机组厂用电扣除）
	供热耗气	31.27	157.01
收入-成本		279.04	236.60

供能形式	供热量/GJ	COP	耗气/耗电	运行费/元
直燃机	1.00	0.938	31.57 m³	87.45
烟气余热回收系统	1.00	5.120	54.25 kW·h	42.62