The
ProgressivTube
Passive Solar Water Heater
is a self-contained
unit that acts as a solar collector and storage tank integrated into one
piece of equipment. In most systems the unit is utilized as a pre-heater
to a instantaneous or conventional water heater. It can also be used
as a stand-alone heater when no backup is required.
The
ProgressivTube
is a passive system because it has no moving
parts and operates on local water pressure and solar radiation. There
are no pumps or controls to maintain and no electrical energy is
required to make it function. Once installed the system will operate
automatically. When hot water is used in the household, solar pre-
heated water is drawn into the conventional water heater (reducing
or eliminating electricity or gas usage for heating water) or directly
to the tap. However, as with all solar water heaters, the total amount
of solar contribution to the system is dependent upon the hot water
consumption pattern, daily weather conditions, and variable amounts of available sunlight throughout the year.
The collector/storage tank of the
ProgressivTube
absorbs solar
radiation through its selective
surface coating which raises the
temperature of the water stored in
the collector. It is well insulated
with closed cell foam and the unit
is double glazed for increased
heat retention. The eight copper
tubes are welded into a series
flow pattern so that the top of
the lower tube feeds the bottom
of the next tube. This allows the
ProgressivTube
to contain the
colder replacement water in the
lower tubes where it is heated by
the sun as it flows from one tube
to the next. Each time hot water
is used, the
ProgressivTube’s
innovative design eliminates the
cooling down of the remaining
heated water that normally occurs
in other types of batch heaters. Not
only does this design ensure the
delivery of the hottest water, but
is also provides more hot water
at a higher temperature and with
a faster recovery time than solar
systems of similar capacity.
ProgressivTube®
SOLAR WATER HEATER
ProgressivTube®
SOLAR WATER HEATER
Summary of Contents for PROGRESSIV TUBE
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