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30kW的条件下,车速大于100km/h时,废热制冷就能满足客车冷负荷需求;车速在35～100km/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35km/h时,客车冷负荷完全由压缩制冷提供。
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 result＇s 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 I00 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.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2013年第2期291-297,共7页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(61076022)
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
thermal energy engineering
exhaust gas waste heat
hybrid refrigeration cycle
coil generator
heat transfer model
