Ltd. Jiangsu Hurt energy saving

 Solar Heat Pipe

Solar Heat Pipe

 

  

   What is a Solar Heat Pipe?

   The solar heat pipes have a boiling point of only around 30oC , so when the heat pipe is heated above this temperature by the solar evacuated tubes the water begins to vaporize (turn to steam).  This vapour rapidly rises to the top of the heat pipe and carries with it large amounts of heat.  As the heat is off-loaded to the to the cooler liquid circulating through the solar collector header pipe at the bulb (top), the vapour condenses to form a liquid (water) and returns to the bottom of the heat pipe to once again repeat the cycle.

 

   The job of the heat pipes in the evacuated tubes is to rapidly transfer away the heat.  The heat pipe capacity must therefore be greater than the evacuated tube's maximum output to avoid a bottle neck in the heat transfer chain.   Heat pipes have an average heat transfer capacity of >110Watts.   The maximum heat output of an evacuated tube is around 65Watts.