SOLAR WATER HEATER INCORPORATING HEAT PIPE

摘要

A solar water heater comprises a plate-like heat pipe (1) having a working fluid enclosed in it. The heat pipe includes a heat collector (3) having a parallel tubular portions (5) and a radiator (4) having hollow portions (6) in communication with the tubular portion. A hot water tank (2) has a metal bottom plate (7) and is placed on the radiator of the heat pipe. The heat pipe has a collector to radiator surface area ratio of from 3/2 to 9/1. The collector tubular portions are 10 to 500 mm in pitch. Each of the tubular portions is 5 to 150 square mm in cross sectional area. The head pipe may have a sacrificial protective layer and heat blocking holes. The main body of the hot water tank is jointed with a groove of the metal bottom plate using a sealant.