【摘要】 针对食品冻结与储藏保鲜要求恒温、恒湿、空气流速和电子膨胀阀特性等研究工作,在原有低温箱的基础上进行了改进,使其具有模拟低温环境的功能。本文重点研究恒温恒湿、电磁阀的控制方式以及介绍一系列相关实验的结果。更多还原

【Abstract】 For the study freezing and keeping fresh of food that require constant temperature , constant humidity, and velocity of ventilation, the characteristics of electronic expansion valve and the teaching experiments, multi - functional low temperature condition simulation test system is improved. This paper mainly introduces the design of system and the results of a serial of experiments, which were correlated on this test system.更多还原