工程机械余热驱动冷管型吸附空调的运行特性

设计建造一种利用工程车余热驱动的冷管型组合式吸附空调系统，建立相应的理论模型和性能分析指标，在此基础上进行空调系统的运行性能试验与分析。在一定的外部环境工况和循环半周期为30 min条件下，当 吸附床采用风冷时，空调器最大制冷降温幅度为13.0 ℃，最大制冷功率为1.10 kW，平均制冷功率842 W， 性能系数e c=0.168，单位质量吸附剂制冷功率Ps=88.2 W·kg–1。当吸附床改进冷却方式后，空调器最大制冷 降温幅度为14.0 ℃，比风冷状态下提高1.0 ℃，最大制冷功率达1.21 kW，平均制冷功率926 W，e c=0.177，Ps= 97.0 W·kg–1。可得出以下结论，吸附床冷却方式改进后系统e c提高约5.4%，最大制冷功率、平均制冷功率和Ps各提高将近10%。

RUNNING CHARACTERISTICS OF ADSORPTION COOLING TUBE AIR-CONDITIONER POWERED BY WASTE HEAT OF ENGINEERING TRUCKS

An adsorption cooling tube knockdown air condi- tioning system powered by waste heat of engineering trucks is designed and manufactured. The relevant theoretical models and performance analysis indexes are presented. Then running performance experiments and relevant analysis for the air conditioning system are carried out. Under the conditions of a certain outside environment and 30 min of half cycle time, the maximum refrigerating temperature fall extent of cooled air is 13.0 ℃, the maximum cooling power is 1.10 kW, the mean cooling power of the system is 842 W, the coefficient of per- formance e c is 0.168, the specific cooling power Ps is 88.2 W/kg, when air is used as the cooling medium for the adsorber of air conditioner. The maximum refrigerating temperature fall extent of cooled air is increased to 14.0 ℃, the maximum cooling power, the mean cooling power of the system, e c and Ps are up to 1.21 kW, 926 W, 0.177 and 97.0 W/kg, respectively, when an improved cooling way for the adsorber of air conditioner is used. The conclusions can be drawn that the increased extent of e c is about 5.4%, and the increased extent of the maximum cooling power, the mean cooling power or Ps is near 10% respectively.