An energy efficient thermo-siphon method of defrosting the air coils on a commercial half glass door (HGD)/well retail display cabinet has been developed (FrigescoTM) and the performance compared with the existing electric defrost system under EN ISO 23953 test room conditions. Previous work by (Foster et al, 2013) used a passive thermo-siphon to defrost the top evaporator inside the top (glass door) section and a pump assisted thermo-siphon to defrost the well section. This was due to the head being too low to adequately defrost the well evaporator with a passive thermo-siphon. This work describes a passive thermo-siphon with no pump. To enable the thermo-siphon to operate efficiently the design of the evaporator was optimised. The thermo-siphon heated quicker and melted water faster than the electric defrost. The thermo-siphon used less electrical heat and had an added benefit of free sub-cooling.
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机译：已经开发出一种节能的热虹吸法，可对商用半玻璃门（HGD）/井间零售展示柜上的空气盘管进行除霜（FrigescoTM），其性能与现有的电动除霜系统在EN ISO 23953试验室条件下相比具有优势。 （Foster等人，2013）的先前工作是使用被动式热虹吸管对顶部（玻璃门）部分内的顶部蒸发器除霜，并使用泵辅助的热虹吸管对井段进行除霜。这是由于压头太低而无法用被动式热虹吸管对井蒸发器进行充分除霜。这项工作描述了一种无泵的无源热虹吸管。为了使热虹吸管有效运行，对蒸发器的设计进行了优化。热虹吸管比电除霜加热更快，融化水更快。热虹吸管消耗的电热较少，并且具有附加的免费过冷好处。
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