On the basis of separate-type heat pipe and water circuit , this article develops a new kind of heat transfer equipment echanically driven separate-type heat pipe ( also named heat circuit for short) which can accomplish effective heat transfer between heat source (in the upper place) and heat sink (in the lower place) with their position and distanc.

For the sake of getting optimal working characteristics, some experimental studies were carried out to the small separated heat pipes with short canals.

Application of helical coils in separated type heat pipe;

In this paper,development of techniques to separated type heat pipe was reviewed,including various flow types of evaporator,filling quantity,heattransfer characteristics,heat flow limitations and optimum working states.

The working principle of a new separated type heat pipe using the gap of canular structure as the evaporation and condensation space was introduced in the paper.

Experimental study on the working fluid filling rates of a special separate type heat pipe;

experimental investigationon of heat transferring capacity of separate type heat pipe which under different level difference

The Influence of surface effects on flow and heat transfer inside small helical coiled tubes of evaporator of separate type heat pipe was studied using theory of interface chemistry.

In the heat pump drying system, the air coming from drying room is cooled before entering the evaporator, and the air from the evaporator is heated by heat recovery exchanger of separate heat pipe.