Any
solar water heater
will generally fit into one of two categories: Passive or active. Here
are some details about these different options:
A passive solar water heater does not require circulating pumps or
controls. Rather, it consists of a very well-insulated storage tank
and collector. The collector is placed outside in the sun. Water is
then pumped through it by the process of natural convection. Finally,
the hot water product is stored in the tank.
On the other hand, an active solar water heater does use pumps and
controls. While active direct circulation systems work similarly to
most passive systems (water is heated by the sun and then sent to a
storage tank,) active indirect circulation systems use the sun to heat
a non-freezing heat-transfer liquid. This, in turn, heats the water.
This is a particularly efficient option for a climate that often has
freezing temperatures.
Currently, a huge percentage of electricity bills can be accounted
for by water heating needs. Most people use hot water daily for taking
showers, washing clothes, doing dishes, and more. With a solar water
heater, the cost of heating water is free. This is a sure way to save
money over the long run.
Certain solar heaters are made specifically for heating pools and hot
tubs. Because these are generally considered luxury items, it can cost
more money than most people care to think about to provide heating for
them. The purchase of a solar powered water heater can rid a person
of any guilt over the situation.
In addition to saving money, relying on this renewable energy source
is better for the environment. Whether solar
water heating is done in an active or passive manner, it does not
contribute to the depletion of the planet’s natural resources.
In addition to that, it causes no harmful emissions to be released into
the air.