Indirect-direct evaporative cooling system operable from sustainable energy source
Improved means for powering and increasing evaporative cooling in an indirect-direct evaporative cooling (IDEC) apparatus are disclosed. Sustainable energy from solar energy mixed with grid power, when needed, power the IDEC device. These DC and AC power sources are seamlessly merged in a unique diode interconnect unit. Improved means for evaporative cooling include a rayon-based flocking on the wet side of molded plastic indirect evaporative cooling plates. Separate wet and dry passages through those plates are facilitated by a unique means for clamping the upper ends of the plates. These clamping means also add to the structural integrity of an array of plates so that the array can be inserted in and removed from a housing containing other operational components of the IDEC such as fan, direct cooling plates and water distribution means. Applicants IDEC utilizes improved porous piping that allows uniform and continuous distribution of water to all wet passages within both the indirect and direct stages of the IDEC. Operational controls for the system limit the potential water damage caused by overflow of water from the IDEC housing.
1. A power system for an indirect-direct evaporative cooling (IDEC) apparatus comprising
a) photo-voltaic cells arranged in solar panels capable of supplying direct current (DC);
b) alternating current (AC) supplied by a utility or other source;
c) a parallel-wound direct current motor connected to a fan capable of forcing air through the IDEC apparatus;
d) a diode interconnect device; and,
e) electric wiring connecting the power sources of (a) and (b) with the motor through the diode interconnect device to seamlessly power that motor from either or both power sources.
2. The IDEC power system of claim 1 wherein the diode interconnect device comprises
a) AC power inputs electrically connected to a first diode bridge;
b) DC power inputs electrically connected to a second diode bridge;
c) DC power outputs electronically connected to the first and second diode bridges for supplying DC power to the motor.
3. The IDEC power system of claim 1 wherein the motor is an electronically commutated motor.
4. The IDEC power system of claim 3 wherein power for operating the motor is supplied through the diode interconnect box.
5. The IDEC power system of claim 1 wherein the motor operates at variable speeds.