Effect of Additive on Performance of On-board Hydrogen Generator with Different Mass Fractions of KOH Liquor

doi:10.3969/j.issn.1000-1093.2016.03.026

Abstract

Abstract: In view of the low efficiency of on-board hydrogen generator used in the vehicle with hydrogen-blended gasoline engine, the effect of additive on the performance of on-board hydrogen generator with different mass fractions of KOH liquor is tested on a hydrogen generator testing bench. The experiment is carried out under the conditions of electrolytic current of 40 A, initial temperature of 23.7 ℃ and initial pressure of 0.1 MPa. The mass fractions of KOH are kept at 20%, 30% and 40% in the KOH liquor. For each KOH mass fraction, the effect of addition of 0.3 g K₂Cr₂O₇ on the electrolytic voltage and hydrogen production efficiency is investigated. The experimental results indicate that, when 20%, 30% and 40% KOH liquors are added into K₂Cr₂O₇, respectively, the electrolytic voltages are reduced by 0.16 V, 0.19 V and 0.09 V, the hydrogen efficiencies are increased by 2.14%, 2.78% and 1.46%, respectively, and the hydrogen efficiency ratios are increased by 5.23%,6.71% and 3.47%. The hydrogen production efficiency is effectively increased by adding 30% KOH liquor into K₂Cr₂O₇.

Key words: power machinery engineering, on-board hydrogen generator, KOH, additive, hydrogen production efficiency, K₂Cr₂O₇

CLC Number:

TK91

JI Chang-wei, FENG Yu, WANG Shuo-feng, ZHANG Bo, XU Pu-yan, YU Meng-hui. Effect of Additive on Performance of On-board Hydrogen Generator with Different Mass Fractions of KOH Liquor[J]. Acta Armamentarii, 2016, 37(3): 570-576.

References

［1］吴森, 钱玉龙. 内燃机掺氢燃烧可行性分析[J]. 汽车工程师, 2010(4):50-53.
WU Sen, QIAN Yu-long. Feasibility analysis on the internal combustion engine mixed with hydrogen combustion [J]. Auto Engineer, 2010(4):50-53. (in Chinese)
[2］ D'Andrea T, Henshaw P F, Ting D S K. The addition of hydrogen to a gasoline-fuelled SI engine[J]. International Journal of Hydrogen Energy, 2004, 29(14):1541-1552.
[3］ Momirlan M, Veziroglu T N. The properties of hydrogen as fuel tomorrow in sustainable energy system for a cleaner planet[J]. International Journal of Hydrogen Energy, 2005, 30(7): 795-802.
[4］ Shudo T. Improving thermal efficiency by reducing cooling losses in hydrogen combustion engines[J]. International Journal of Hydrogen Energy, 2007, 32(17):4285-4293.
[5］ Yang Z Z, Wang L, Zhang Q. Research on optimum method to eliminate backfire of hydrogen internal combustion engines based on combining postponing ignition timing with water injection of intake manifold [J]. International Journal of Hydrogen Energy, 2012, 37(17):12868-12878.
[6］汪硕峰. 掺氢汽油机燃烧与排放特性的实验研究[D]. 北京:北京工业大学, 2013.
WANG Shuo-feng. Experimental investigation on combustion and emissions characteristics of a hydrogen-blended gasoline engine[D]. Beijing: Beijing University of Technology, 2013.(in Chinese)
[7］ Ma F H, Ding S, Wang Y, et al. Performance and emissions characteristics of a spark-ignition (SI) hydrogen-enriched compressed natural gas (HCNG) engine under various operating conditions including idle conditions[J]. Energy Fuels, 2009, 23(6): 3113-3118.
[8］ Ma F H, Wang Y. Study on the extension of lean operating limit through hydrogen enrichment in a natural gas spark-ignition engine[J]. International Journal of Hydrogen Energy, 2008, 33(4):1416-1424.
[9］马凡华, 陈仁哲, 齐政亮, 等. 火花点火天然气发动机起动阶段 HC 排放特性研究[J]. 内燃机工程, 2012, 33(3):10-19.
MA Fan-hua, CHEN Ren-zhe, QI Zheng-liang, et al. HC emission characteristics of spark ignition CNG engine during starting period.[J]. Chinese Internal Combustion Engine Engineering, 2012, 33(3): 10-19. (in Chinese)
[10］ Ma F H, Wang Y, Liu H, et al. Experimental study on thermal efficiency and emission characteristics of a lean burn hydrogen enriched natural gas engine[J]. International Journal of Hydrogen Energy, 2007, 32(18):5067-5075.
[11］张继春, 李兴虎, 杨建国, 等. 掺氢比对天然气发动机燃烧放热影响的研究[J]. 内燃机工程, 2009,30(1):15-18.
ZHANG Ji-chun, LI Xing-hu, YANG Jian-guo, et al. Effect of different fraction of hydrogen addition on combustion mass fraction of a spark ignition engine fueled with natural gas[J]. Chinese Internal Combustion Engine Engineering, 2009,30(1):15-18. (in Chinese)
[12］ Ji C W,Wang S F, Zhang B, et al. Emissions performance of a hybrid hydrogen-gasoline engine-powered passenger car under the new european driving cycle[J]. Fuel, 2013, 106:873-875.
[13］ Wendt H, Plzak V. Electro catalytic and thermal activation of anode oxygen and catholic hydrogen evolution in alkaline water electrolysis[J]. Electrochemical Acta,1983,28(1):27-34.
[14］胡伟康, 张允什, 宋德瑛, 等. 碱性电解水制氢的活性阴极材料[J]. 高技术通讯, 1995(8):55-60.
HU Wei-kang, ZHANG Yun-shi, SONG De-ying, et al. Active cathode material for hydrogen production from alkaline electrolysis water[J]. High Tech Communication, 1995(8):55-60.(in Chinese)
[15］姜春兰. 水电解制氢节能技术探讨[J]. 冶金动力, 1995(1):38-39.
JIANG Chun-lan. Investigation on the saving energy technology about hydrogen production by electrolysis of water[J]. Metallurgical Power, 1995(1):38-39.(in Chinese)
[16］李效文. 应用添加剂法降低水电解能耗[J]. 有色冶金节能, 1994(3):1-3.
LI Xiao-wen.Using additives to reduce the energy consumption of water electrolysis[J]. Energy Saving of Non-Ferrous Metallurgy, 1994(3):1-3.(in Chinese)
[17］王迪. 水电解过程中的节能与降耗[J]. 中国钼业,1998,22(3):44-46.
WANG Di. Energy saving and consumption in the process of electrolysis of water[J]. China Molybdenum Industry, 1998,22(3): 44-46.(in Chinese)
[18］魏子栋, 洪燕, 李兰兰, 等. HTMAB对碳电极上电解水的促进作用[J]. 化工学报, 2004, 55(增刊):265-268.
WEI Zi-dong, HONG Yan, LI Lan-lan, et al. Water electrolysis on carbon electrodes enhanced by HTMAB[J]. Journal of Chemical Industry and Engineering(China), 2004, 55(S):265-268.(in Chinese)
[19］刘明义, 于波, 徐景明. 固体氧化物电解水制氢系统效率[J]. 清华大学学报:自然科学版, 2009，49(6):868-871.
LIU Ming-yi, YU Bo, XU Jing-ming. Efficiency of solid oxide water electrolysis system for hydrogen production[J]. Journal of Tsinghua University:Science and Technology, 2009,49(6):868-871.(in Chinese)
[20］吴素芳. 氢能与制氢技术[M]. 浙江:浙江大学出版社, 2014.
WU Su-fang. Hydrogen energy and hydrogen producing technologies[M]. Zhejiang:Zhejiang University Press, 2014.(in Chinese)

[1]	XUE Hao, WANG Tao, HUANG Guangyan, CUI Xinyu, HAN Hongwei. Ballistic Performance of Additively Manufactured 316L Stainless Steel Spherical Fragments [J]. Acta Armamentarii, 2024, 45(2): 395-406.
[2]	YUAN Jing, LIN Xiangyang, PENG Yang, TAN Cheng. Design and Synthesis of Light-Curable Energetic Binders [J]. Acta Armamentarii, 2023, 44(7): 2023-2032.
[3]	WANG Yu, BAI Shule, WANG Ziqi, LIU Bin, FENG Li, ZHAO Wenjuan, HAO Junhui. Design of Layered Metal Embedded Stress Sensing Structure and Testing of Microstructure and Properties in Ultrasonic Additive Manufacturing [J]. Acta Armamentarii, 2023, 44(12): 3783-3792.
[4]	ZONG Yu， SONG Renguo， HUA Tianshun， CAI Siwei. Effect of Graphene Additive on Microstructure and Properties of MAO Ceramic Coatings Formed on 7050 Aluminum Alloy [J]. Acta Armamentarii, 2020, 41(6): 1210-1218.
[5]	WANG Wei-lun, LI Jian-min, YANG Rong-jie, LIU Zhu, LI Shi-peng. Influence of Organic Fluorine-contained Additives on Condensed Combustion Products of Aluminized Polyether Propellants [J]. Acta Armamentarii, 2017, 38(4): 704-710.
[6]	ZHANG Shuan-lu， ZHAO Chang-lu， ZHONG Ke, ZHAO Zhen-feng. Analysis of Indicated Work Effect Factors of Hydraulic Free-piston Diesel Engine [J]. Acta Armamentarii, 2016, 37(3): 394-399.
[7]	MU Hong-bin, WEI Wei， YAN Qing-dong， LIU Cheng. Optimization Design of Blade Top Arcs of Dual Torus Hydrodynamic Retarder [J]. Acta Armamentarii, 2016, 37(3): 400-407.
[8]	QIU Tao, XU Hui, LEI Yan. Experimental Research on the Process of Cavitation and Its Influence on the Nozzle of Diesel Engine [J]. Acta Armamentarii, 2016, 37(11): 2114-2119.
[9]	HUANG Mian-dun, ZHANG Fu-jun, CUI Tao, LIU Xue-yuan. Research on the Starting Response of Heavy-duty Off-road Vehicle on Plateau [J]. Acta Armamentarii, 2016, 37(10): 1915-1925.
[10]	WEI Sheng-li, LU Hong-kun, LENG Xian-yin, LIANG Yu, CHEN Liang, WANG Fei-hu. Experimental Research on Combustion System with Double ω Combustion Chamber for ZS1100M Diesel Engine [J]. Acta Armamentarii, 2016, 37(1): 17-22.
[11]	WEI Sheng-li， LIU Xin， LENG Xian-yin， LIANG Yu， JI Kun-peng， WANG Fei-hu. Research on Effect of Late Intake Valve Closing Miller Cycle on Combustion and Emissions of Diesel Engine [J]. Acta Armamentarii, 2015, 36(8): 1384-1390.
[12]	LI Zhi-nong, DU Yi-guang, XIAO Yao-xian. Fault Diagnosis Method of Rotor System with Multi-crack Based on Nonlinear Output Frequency Response Function [J]. Acta Armamentarii, 2015, 36(6): 1096-1103.
[13]	QIU Tao， FENG Xiang， LEI Yan， DAI He-fei， XU Hui， ZHANG Chuan-xia. Experimental Study of Influence of Outlet Pressure on Discharge Characteristics of Diesel Injector [J]. Acta Armamentarii, 2015, 36(5): 777-780.
[14]	ZHANG Chang-ling, LIU Fu-shui, SHANG Hai-kun, WANG Pei, ZHANG Zheng, WANG Yan. Simulation and Experimental Research on Oil Flow Loss of Diesel Engine at Plateau [J]. Acta Armamentarii, 2015, 36(2): 193-199.
[15]	REN Zhao-xin， SU Tie-xiong， WANG Zeng-quan， YU Bao-jin， DING Ji-feng. Study of Adjusting Diesel Fuel Supply System in Plateau Area [J]. Acta Armamentarii, 2015, 36(12): 2217-2223.