Dryer System is powered by
solar autonomous air-to-air
heat pump.It allows for operation
with variable capacity thanks
flow and compressor speed. They are
dynamically adjusted in real time to match the current
conditions and heat load using the
amount of electric power so as to reduce the number of
solar PV panels needed to operate the system. The base
configuration requires only three PV
solar panels. Energy
efficiency is based on "air to air" or "ground to air"
heat pump/s and recuperation of waste heat from exhaust
warm air from outside heat pump unit/s. Patented
dryer designed for autonomous operation but can be
connected to power grid, as well.
heat pump uses a hermetically sealed permanent magnet brushless DC
compressor for maximum service life; with specially
designed controls and a digital frequency driver send
power to the compressor using alternating pulses of DC
current at a rate between 25 Hz and 125 Hz, depending on
requirements, matching the compressor capacity to the
By contrast, a normal air-to-air
heat pump with a fixed capacity must run at a steady
50Hz AC and must continually turn itself on and off to
satisfy the thermostat, wasting energy.
Our DC design avoids the use of a DC-AC inverter, and
eliminates the rectifier circuits found in normal high
efficiency air conditioning systems, thus avoiding up to
23% of power conversion losses that would occur when
running a high efficiency air conditioner from solar
power or other DC source through an inverter.
Our systems works with standard PV
panels and need a minimum of 600 watts to operate, with
a minimum of four standard deep cycle solar batteries
configured in series/parallel for DC
along with an external standard solar charge controller.
provides a solar electric power
generation system used for a low
temperature air drying.
embodiment of a high efficiency dehumidifier is a vapor
compression beat pump system which includes an
evaporator, a compressor, a condenser and a blower .
The principle of operation is well known in the field of
refrigeration: ambient air is blown through the
evaporator, which is kept cold by evaporation of a
refrigerant. The moisture in the air condenses on the
evaporator and is drained away as condensate. The cold
air which exits the evaporator then enters the
condenser, where it is reheated; then, the now dry and
warm air is sent to the point of use.
dehumidifier can be improved by the use of a heat pipe
heat exchanger, which transfers heat between the warm
entering air and the cold air leaving the evaporator
coil as shown in U.S. Pat. Nos. 5,404,938, 4,938,035,
and Taiwanese and Chinese patents of inventor Khanh Dinh.
The use of the dehumidifier heat pipe invented by Dinh
can reduce the power consumption of the heat pump by up
to 50%, saving a large amount of energy.
heat pump can also use an internal combustion engine for
its power source, with a series air flow configuration
such as in FIG. 4a or with a parallel air flow
configuration . In this invention, the dehumidifier is
further improved by recovering waste heat from the
internal combustion engine which is used to power the
heat pump. Waste heat from the engine exhaust can be
recovered directly by Seebeck waste heat converter to