Multi-section heat-pipe solar collector

Abstract

A multi-section heat-pipe solar collector includes a heat-exchanging pipe and at least one heat-collecting module. The heat-collecting module includes a heat pipe and a plurality of heat-collecting plates serially connected on one side of the heat pipe at intervals. One end of the heat pipe is inserted into the heat-exchanging pipe. The heat-collecting plates are arranged on the other end of the heat pipe in multiple sections and have different heat transfer characteristics respectively.

What is claimed is: 
     
         1 . A multi-section heat-pipe solar collector, including:
 a heat-exchanging pipe; and   at least one heat-collecting module comprising a heat pipe and a plurality of heat-collecting plates serially connected on one side of the heat pipe at intervals, one end of the heat pipe being inserted into the heat-exchanging pipe, the heat-collecting plates being arranged on the other end of the heat pipe in multiple sections and having different heat transfer characteristics respectively.   
     
     
         2 . The multi-section heat-pipe solar collector according to  claim 1 , further including a heat-collecting support and a connecting sleeve, the heat-exchanging pipe and the heat-collecting plates being fixed on the heat-collecting support, the heat pipe being inserted into the heat-exchanging pipe via the connecting sleeve. 
     
     
         3 . The multi-section heat-pipe solar collector according to  claim 1 , wherein the heat-exchanging pipe has a water exhaust port and a water intake port opposite to each other, cold water flows into the heat-exchanging pipe via the water intake port, and the cold water flowing through the heat pipe exits the heat pipe via the water exhaust port. 
     
     
         4 . The multi-section heat-pipe solar collector according to  claim 1 , wherein the heat pipe comprises a condensing section and an evaporating section, the condensing section is inserted into the heat-exchanging pipe, and the evaporating section is inserted into the heat-collecting plates. 
     
     
         5 . The multi-section heat-pipe solar collector according to  claim 4 , wherein the heat-collecting plate near the condensing section is a first heat-collecting plate, the heat-collecting plate away from the condensing section is a second heat-collecting plate, and the heat-conducting efficiency of the first heat-collecting plate is different from of the heat-conducting efficiency of the second heat-collecting plate. 
     
     
         6 . The multi-section heat-pipe solar collector according to  claim 5 , wherein the first heat-collecting plate is made of a first metal, the second heat-collecting plate is made of a second metal, and the heat transfer coefficient of the first metal is different from the heat transfer coefficient of the second metal. 
     
     
         7 . The multi-section heat-pipe solar collector according to  claim 5 , wherein the heat-collecting plates are made of the same material, and the thickness of the first heat-collecting plate is different from the thickness of the second heat-collecting plate. 
     
     
         8 . The multi-section heat-pipe solar collector according to  claim 5 , wherein a surface of the first heat-collecting plate has a first coating, a surface of the second heat-collecting plate has a second coating, and the thermal emissive coefficient of the first coating is different from the thermal emissive coefficient of the second coating.