车速变化对吸收/压缩混合制冷循环的影响

吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (02): 291-297.

车速变化对吸收/压缩混合制冷循环的影响

李见波, 徐士鸣, 刘福森

大连理工大学能源与动力学院, 辽宁大连 116024

收稿日期:2012-02-12 出版日期:2013-03-01 发布日期:2013-03-01
通讯作者: 徐士鸣(1957-),男,教授,博士生导师.研究方向:废热回收与利用.E-mail:xsming@dlut.edu.cn E-mail:xsming@dlut.edu.cn
作者简介:李见波(1985-),男,博士研究生.研究方向:废热制冷.E-mail:ljb_1985@163.com
基金资助:
国家自然科学基金项目(61076022).

Influence of driving speed on absorption/compression hybrid refrigeration cycle

LI Jian-bo, XU Shi-ming, LIU Fu-sen

School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, China

Received:2012-02-12 Online:2013-03-01 Published:2013-03-01

摘要/Abstract

摘要： 通过对不同车速下客车发动机排气参数的定量分析和吸收/压缩混合制冷循环计算,确定了发生器的结构形式和换热面积,建立了发动机排气参数和发生器内工作流体的传热分布参数模型。进而分析了在不同车速下发生器负荷特性对混合制冷循环的影响。结果表明,制冷负荷为30 kW的条件下,车速大于100 km/h时,废热制冷就能满足客车冷负荷需求;车速在35~100 km/h时,废热制冷和压缩制冷联合运行才能满足客车冷负荷需求;车速低于35 km/h时,客车冷负荷完全由压缩制冷提供。

关键词: 热能工程, 排气废热, 混合制冷循环, 盘管发生器, 换热模型

Abstract: By quantitatively analyzing the exhaust gas parameters from a bus engine under different driving conditions and calculating the absorption/compression hybrid refrigeration cycle, the structure of the refrigeration generator and its heat transfer area were determined. A model with distributed parameters was built for the heat transfer between the engine exhaust gases and working fluid in the generator. The influences of the generator cooling loads on the characteristic of the hybrid refrigeration cycle were analyzed at different driving speeds. The results showed that at the condition of cooling load 30 kW, so long as the driving speed higher than 100 km/h, the waste heat absorption refrigeration sub-cycle alone can meet completely the cooling request of the bus. When the driving speeds between 35 and 100 km/h, the combination of both absorption and compression refrigeration sub-cycles can supply the sufficient cooling. When driving speeds lower than 35 km/h, the cooling of the bus was provided only by the compression refrigeration sub-cycle.

Key words: thermal energy engineering, exhaust gas waste heat, hybrid refrigeration cycle, coil generator, heat transfer model

中图分类号:

TK11

李见波, 徐士鸣, 刘福森. 车速变化对吸收/压缩混合制冷循环的影响[J]. 吉林大学学报(工学版), 2013, 43(02): 291-297.

LI Jian-bo, XU Shi-ming, LIU Fu-sen. Influence of driving speed on absorption/compression hybrid refrigeration cycle[J]. 吉林大学学报(工学版), 2013, 43(02): 291-297.

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