Thermodynamic Performance Analysis of a Parabolic Trough Solar-assisted Biomass-fired Cogeneration System

doi:10.12096/j.2096-4528.pgt.21044

Abstract

Abstract:

The integration of renewable energy combined heat and power system has broad application prospects in the field of regional comprehensive energy utilization. This paper proposed a parabolic trough solar-assisted biomass-fired cogeneration system. The system uses medium and low temperature trough solar energy to heat the thermal oil that drives the absorption heat pump to preheat the supply-water, while the biomass fuel and heat output keep constant. The extraction steam for heating is decreased while power generation is increased. The EBSILON professional software was used to model and simulate the case plant and integrated system, and on this basis, the thermodynamic characteristics of energy flow and exergy loss of the system were analyzed. The results show that, under the design conditions, 1.78 MW·h of solar power can be generated, the solar-to-electricity efficiency is 20.06%, and the solar-to-electricity exergy efficiency can reach 21.60%. Five typical days were selected to explore the performance under different radiation conditions. We found that the solar radiation and system performance on March 21st are both the best. A time-by-hour simulation analysis was conducted for the entire heating season. A total of 1 124.30 MW·h of solar power is produced in the five-month heating period with an average solar-to-electricity efficiency of 16.49%.

Key words: trough solar energy, biomass-fired cogeneration, absorption heat pump, system integration, thermodynamic analysis

CLC Number:

TK519

Kai XUE, Yihan WANG, Heng CHEN, Gang XU, Jing LEI. Thermodynamic Performance Analysis of a Parabolic Trough Solar-assisted Biomass-fired Cogeneration System[J]. Power Generation Technology, 2021, 42(6): 653-664.

Figures/Tables 24

References 38

1	金红光, 何雅玲, 杨勇平, 等. 分布式能源中的基础科学问题[J]. 中国科学基金, 2020, 34 (3): 266- 271.
	JIN H G , HE Y L , YANG Y P , et al. Basic scientific issues in distributed energy system[J]. China Science Foundation, 2020, 34 (3): 266- 271.
2	李海玲, 吕芳, 王一波, 等. 以可再生能源为主的多能互补集成应用现状及发展研究[J]. 太阳能, 2020, (9): 14- 24. DOI
	LI H L , LÜ F , WANG Y B , et al. Status and development research of integrated application of multi-energy complementary system based on renewable energy[J]. Solar Energy, 2020, (9): 14- 24. DOI
3	王庆刚, 杨谋存, 朱跃钊, 等. 可再生能源多能互补热电气联产系统评价方法综述[J]. 电网技术, 2021, 45 (3): 937- 950.
	WANG Q G , YANG M C , ZHU Y Z , et al. Review on evaluation methods of a combined heating, power and biogas system coupled with renewable energy[J]. Power System Technology, 2021, 45 (3): 937- 950.
4	SHAO M , HAN Z , SUN J , et al. A review of multi-criteria decision making applications for renewable energy site selection[J]. Renewable Energy, 2020, 157, 377- 403. DOI
5	吕薇. 我国可再生能源发展现状与政策取向[J]. 发展研究, 2009, (1): 4- 8. DOI
	LÜ W . Renewable energy development status and policy orientation in China[J]. Development and Research, 2009, (1): 4- 8. DOI
6	鲁延辉. 我国可再生能源发电产业技术创新模式研究[D]. 北京: 华北电力大学, 2019.
	LU Y H. Research on the technological innovation model of my country's renewable energy power generation industry[D]. Beijing: North China Electric Power University, 2019.
7	YDRISSI M E , GHENNIOUI H , BENNOUNA E G , et al. A review of optical errors and available applications of deflectometry technique in solar thermal power applications[J]. Renewable and Sustainable Energy Reviews, 2019, 116, 109438. DOI
8	张哲旸, 巨星, 潘信宇, 等. 太阳能光伏-光热复合发电技术及其商业化应用[J]. 发电技术, 2020, 41 (3): 220- 330.
	ZHANG Z Y , JU X , PAN X Y , et al. Photovoltaic/concentrated solar power hybrid technology and its commercial application[J]. Power Generation Technology, 2020, 41 (3): 220- 330.
9	LEE J , WI S , YANG S , et al. Experimental study and assessment of high-tech thermal energy storing radiant floor heating system with latent heat storage materials[J]. International Journal of Thermal Sciences, 2020, 155, 106410. DOI
10	OGUNMODIMU O , OKOROIGWE E C . Concentrating solar power technologies for solar thermal grid electricity in Nigeria: A review[J]. Renewable and Sustainable Energy Reviews, 2018, 90, 104- 119. DOI
11	佟锴, 杨立军, 宋记锋, 等. 聚光太阳能集热场先进技术综述[J]. 发电技术, 2019, 40 (5): 413- 425.
	TONG K , YANG L J , SONG J F , et al. Review on advanced technology of concentrated solar power concentrators[J]. Power Generation Technology, 2019, 40 (5): 413- 425.
12	刘尧东, 张燕平, 万亮, 等. 基于Al₂O₃纳米流体的槽式太阳能热发电集热器传热建模及性能分析[J]. 发电技术, 2021, 42 (2): 230- 237.
	LIU Y D , ZHANG Y P , WAN L , et al. Heat transfer modelling and performance analysis of trough solar thermal power collector based on Al₂O₃ nanofluid[J]. Power Generation Technology, 2021, 42 (2): 230- 237.
13	翟融融, 刘洪涛. 基于有限时间热力学的太阳能辅助燃煤发电系统集成理论分析[J]. 发电技术, 2019, 40 (4): 316- 322.
	ZHAI R R , LIU H T . Theoretical analysis of solar-aided coal-fired power generation system based on finite time thermodynamics[J]. Power Generation Technology, 2019, 40 (4): 316- 322.
14	QIN J , HU E , LI X . Solar aided power generation: a review[J]. Energy and Built Environment, 2020, 1 (1): 11- 26. DOI
15	QIN J , HU E , NATHAN G J . Impact of the operation of non-displaced feedwater heaters on the performance of solar aided power generation plants[J]. Energy Conversion and Management, 2017, 135, 1- 8. DOI
16	侯宏娟, 王学伟, 宋红, 等. 太阳能辅助330 MW燃煤机组互补发电系统动态特性及年性能分析[J]. 太阳能学报, 2018, 39 (12): 3331- 3338.
	HOU H , WANG X , SONG H , et al. Dynamic characteristic and annual performance analysis of solar assisted 330 MW coal-fired unit hybrid power generation system[J]. Acta Energiae Solaris Sinica, 2018, 39 (12): 3331- 3338.
17	郭民臣, 安广然, 纪执琴, 等. 定功率下太阳能辅助燃煤发电系统的热经济性分析[J]. 中国电机工程学报, 2016, 36 (9): 2444- 2451.
	GUO M C , AN G R , JI Z Q , et al. Thermal economic analyses of a solar aided coal-fired power unit for constant power output[J]. Proceedings of the CSEE, 2016, 36 (9): 2444- 2451.
18	宋嘉. 槽式太阳能与燃煤空冷机组的集成发电系统热力特性研究[D]. 北京: 华北电力大学, 2018.
	SONG J. Research on thermal characteristics of integrated power generation system of trough solar energy and coal-fired air-cooled unit[D]. Beijing: North China Electric Power University, 2018.
19	SITUMORANG Y A , ZHAO Z , YOSHIDA A , et al. Small-scale biomass gasification systems for power generation (< 200 kW class): a review[J]. Renewable and Sustainable Energy Reviews, 2020, 117, 109486. DOI
20	WANG X , ZHU Y , HU Z , et al. Characteristics of ash and slag from four biomass-fired power plants: ash/slag ratio, unburned carbon, leaching of major and trace elements[J]. Energy Conversion and Management, 2020, 214, 112897. DOI
21	PERKINS G . Techno-economic comparison of the levelised cost of electricity generation from solar PV and battery storage with solar PV and combustion of bio-crude using fast pyrolysis of biomass[J]. Energy Conversion and Management, 2018, 171, 1573- 1588. DOI
22	QIU G , SHAO Y , LI J , et al. Experimental investigation of a biomass-fired ORC-based micro-CHP for domestic applications[J]. Fuel, 2012, 96, 374- 382. DOI
23	BAI Z , LIU Q , LEI J , et al. Thermodynamic evaluation of a novel solar-biomass hybrid power generation system[J]. Energy Conversion and Management, 2017, 142, 296- 306. DOI
24	MORAIS P H D S , LODI A , AOKI A C , et al. Energy, exergetic and economic analyses of a combined solar-biomass-ORC cooling cogeneration systems for a Brazilian small plant[J]. Renewable Energy, 2020, 157, 1131- 1147. DOI
25	OYEKALE J , PETROLLESE M , CAU G . Modified auxiliary exergy costing in advanced exergoeconomic analysis applied to a hybrid solar-biomass organic Rankine cycle plant[J]. Applied Energy, 2020, 268, 114888. DOI
26	MORRONE P , ALGIERI A , CASTIGLIONE T . Hybridisation of biomass and concentrated solar power systems in transcritical organic Rankine cycles: A micro combined heat and power application[J]. Energy Conversion and Management, 2019, 180, 757- 768. DOI
27	ZHANG X H , YANG J J , FAN Y , et al. Experimental and analytic study of a hybrid solar/biomass rural heating system[J]. Energy, 2020, 190, 116392. DOI
28	李雪如. 生物质能辅助太阳能热发电控制研究[D]. 北京: 华北电力大学, 2015.
	LI X R. Research on the control of biomass-assisted solar thermal power generation[D]. Beijing: North China Electric Power University, 2015.
29	WU H F , LIU Q B , ZHANG B , et al. Thermodynamics analysis of a novel steam/air biomass gasification combined cooling, heating and power system with solar energy[J]. Applied Thermal Engineering, 2020, 164, 114494. DOI
30	麻国倩. 基于EBSILON二次再热百万机组机炉耦合建模仿真及热经济性研究[D]. 济南: 山东大学, 2020.
	MA G Q. Based on EBSILON secondary reheat million units turbine-boiler coupling modeling simulation and thermal economy[D]. Jinan: Shandong University, 2020.
31	赵世飞, 王为术, 刘军. 1000 MW超临界二氧化碳燃煤发电系统热力学性能分析[J]. 热力发电, 2020, 49 (12): 9- 16.
	ZHAO S F , WANG W S , LIU J . Thermodynamic performance analysis for a 1000 MW coal-fired supercritical CO₂ power plant[J]. Thermal Power Generation, 2020, 49 (12): 9- 16.
32	MONTES M J , ABÁNADES A , MARTÍNEZ-VAL J M , et al. Solar multiple optimization for a solar-only thermal power plant, using oil as heat transfer fluid in the parabolic trough collectors[J]. Solar Energy, 2009, 83 (12): 2165- 2176. DOI
33	WU J , HOU H , YANG Y , et al. Annual performance of a solar aided coal-fired power generation system (SACPG) with various solar field areas and thermal energy storage capacity[J]. Applied Energy, 2015, 157, 123- 133. DOI
34	宋淑英. 电厂热力循环的?分析[J]. 天津电力技术, 1997, (4): 1- 6.
	SONG S Y . Exergy analysis of power plant thermal cycle[J]. Tianjin Electric Power Technology, 1997, (4): 1- 6.
35	ZHU Y , LI W , LI J , et al. Thermodynamic analysis and economic assessment of biomass-fired organic Rankine cycle combined heat and power system integrated with CO₂ capture[J]. Energy Conversion and Management, 2020, 204, 112310. DOI
36	ZHANG C , LIU C , WANG S , et al. Thermo-economic comparison of subcritical organic Rankine cycle based on different heat exchanger configurations[J]. Energy, 2017, 123, 728- 741. DOI
37	BAI Z , SUN J , LIU Q . Comprehensive assessment of lin-/point-focus combined scheme for concentrating solar power system[J]. International Journal of Energy Research, 2018, (5): 1983- 1998.
38	侯宏娟, 崔浩, 黄畅, 等. 直接空冷型槽式太阳能发热电系统技术经济分析[J]. 太阳能学报, 2021, 42 (1): 90- 95.
	HOU H J , CUI H , HUANG C , et al. Technical and economic analysis of parabolic trough solar thermal power generation system with direct air-cooling[J]. Acta Energiae Solaris Sinica, 2021, 42 (1): 90- 95.

参数	数值
主蒸汽压力/MPa	9.40
主蒸汽温度/℃	535.0
主蒸汽流量/(kg/s)	38.89
排汽压力/kPa	4.90
排汽温度/℃	32.5
排汽流量/(kg/s)	22.20
锅炉效率/%	89.0

参数	数值
主蒸汽压力/MPa	9.40
主蒸汽温度/℃	535.0
主蒸汽流量/(kg/s)	38.89
排汽压力/kPa	4.90
排汽温度/℃	32.5
排汽流量/(kg/s)	22.20
锅炉效率/%	89.0

参数	RH1	RH2	RH3	RH4	RH5	RH6
抽汽温度/℃	391.4	312.9	288.1	182.8	120.8	85.4
抽汽压力/MPa	2.85	1.44	1.13	0.37	0.18	0.06
抽汽流量/(kg/s)	2.28	1.37	7.02	1.43	1.73	2.44
疏水温度/℃	193.4	165.7	-	115.0	84.7	32.5
疏水流量/(kg/s)	2.28	4.07	-	1.43	3.15	5.60
出口给水温度/℃	219.3	187.8	160.1	133.0	109.4	79.1
出口给水流量/(kg/s)	38.89	38.89	38.89	33.35	33.35	33.35

参数	RH1	RH2	RH3	RH4	RH5	RH6
抽汽温度/℃	391.4	312.9	288.1	182.8	120.8	85.4
抽汽压力/MPa	2.85	1.44	1.13	0.37	0.18	0.06
抽汽流量/(kg/s)	2.28	1.37	7.02	1.43	1.73	2.44
疏水温度/℃	193.4	165.7	-	115.0	84.7	32.5
疏水流量/(kg/s)	2.28	4.07	-	1.43	3.15	5.60
出口给水温度/℃	219.3	187.8	160.1	133.0	109.4	79.1
出口给水流量/(kg/s)	38.89	38.89	38.89	33.35	33.35	33.35

参数	数值
集热器组件长(宽)度/m	150.00(5.76)
集热器组件有效光学面积/m²	817.43
玻璃外壳的外(内)径/m	0.120(0.115)
吸收管外(内)径/m	0.070(0.065)
最大光学效率/%	75.00
集热器数量/个	12
镜场总有效光学面积/m²	9 809.16