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The Green
Machine
The Green Machine® operates with air conditioning and
refrigeration systems to harvest excess heat, which would
otherwise be lost, thereby improving overall system energy
efficiency and providing Free Hot Water! |
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A typical vapor compression system consists of four major
components (compressor, condenser, expansion device and an
evaporator). The operation cycle for vapour systems follows
the basic pattern of 1) compressing low pressure vapor
refrigerant to a high temperature vapor (superheated
condition), 2) condensing the high pressure vapor to high
pressure liquid (phase change) 3) expanding high pressure
liquid to low pressure super-cooled liquid and finally 4)
evaporating low pressure liquid to low pressure vapor. |
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For heat recovery, the process of interest is the compression
that takes place in step one, which increases the pressure and
temperature of the refrigerant gas; this is known as Heat of
Compression. The compression work (step 1) done on the gas is
dependent upon several factors, refrigerant type and the
efficiency of the compression process being two of them. This
gas is also known as a superheated gas because it exits the
compressor at a temperature significantly higher than its
saturation temperature. This so-called superheat is a part of
the waste heat that can be recovered for water heating through
the use of The Green Machine®. |
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The Green Machine® stops the hot discharge gas produced in
step one before it goes to the system condenser. The Green
Machine® when properly sized and installed, harvests only the
superheat. In the process, it removes this amount of load from
the system condenser (step 2), thereby allowing it to devote its
full surface to condensing without the burden of desuperheating
the gas. Hence, saving energy and by extension cost.
The amount of waste heat recoverable in any installation is
dependent upon three main factors: (1) The discharge temperature
of the compressor, (2) The number of hours per day and days per
year that the air conditioning/refrigeration system operates and
(3) The amount of hot water that can be utilized at the home or
business. |
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For more information,
contact us today! |
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