Solar Water Heating System

Heat Pipe Solar Water Heating System

Heat Pipe Technology has been in use in Europe and is more efficient in areas where diffuse radiations are more as compared to direct radiations climates.
The selective coating on the copper absorber absorbs the heat energy from solar radiation. The liquid in copper tubes gets heated. the liquid rises in the tube and gives the energy to the manifold. Thus heating the water in the tank.
Heat Pipe Technology is best for industrial use for temp. application up to 90 C and for Air conditioning application.

flat type and Heat Pipe

flat type Solar Water Heating System

A Flat Plate Collector is a heat exchanger that converts the radiant solar energy from the sun into heat energy using the well-known greenhouse effect. It collects, or captures solar energy and uses that energy to heat water in the home for bathing, washing, and heating. A solar flat plate collector typically consists of a large heat absorbing panel, usually a large sheet of copper or aluminum (both good conductors of heat), which is painted and chemically etched black to absorb as much solar radiation as possible for max. efficiency. This surface has several parallel copper pipes/tubes running lengthways across the plate which contain the heat transfer fluid, typically water.

ETC Solar Water Heating System

The Evacuated tube collector consists of a number of rows of parallel transparent glass tubes connected to a header pipe. These glass tubes are cylindrical in shape. Therefore, the angle of the sunlight is always perpendicular to the heat absorbing tubes which enables these collectors to perform well even when sunlight is low such as when it is early in the morning or late in the afternoon, or when shaded by clouds.
Evacuated tube collectors are made up of a single or multiple rows of parallel, transparent glass tubes & each tube consists of a thick glass outer tube and a thinner glass inner tube called a “thermos-flask tube” which is covered with a special coating that absorbs solar energy but prevents heat loss. The tubes are made of a material that is strong, resistant to high temperatures, and has a high transmittance for solar irradiation.


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