It features additional units such as casing, refrigerating coiledpipe, radiator coiledpipe and throttle device.
它有电动机、压缩机、集液槽，其特征在于：还有壳体、制冷盘管、散热盘管、节流器。
2
The design method of the vertical coiledpipe geothermal heat exchanger and the selecting method of the circulators was presented.
介绍了地热换热器的形式，提出了竖直埋管地热换热器的设计方法及地下环路循环泵的选择方法。
3
The plate type coiledpipe or spiral pipe is molded by two flat plates with corresponding grooves or a convex and a concave plates which are oppositely pressed.