Abstract: Apparatus for and a method of preventing the formation of moisture on the exterior of an air conditioning unit. Condensate collected at the evaporator and discharged into the condenser section of the unit absorbs heat energy eliminating cold spots on the exterior surface of the unit where moisture may condense. A condensate collection pan having various flow barriers is utilized to route the cold condensate from the evaporator along a tortuous path in heat exchange relationship with ambient air. Heat energy is transferred from the ambient air to the condensate in the condensate collection pan thereby acting to increase the temperature of the condensate prior to it being discharged into the condenser section.

Abstract: A floor mounted air conditioner comprising a housing containing cylindrical condenser coils disposed about a normally vertical axis and cylindrical evaporator coils coaxially disposed above the condenser coils. A drip pan separates the condenser and evaporator coils and includes openings for discharging condensate onto the condenser coils for evaporation. A condenser fan is associated with a bottom duct adapted for installation in a mounting opening in the floor of a room, for blowing hot air through the mounting opening, and an evaporator fan is associated with a top duct for blowing cool air into the room being cooled.

Abstract: A refrigerator is provided with a continuous length of capillary material that extends via an opening in the refrigerator wall into contact with an evaporator in an enclosed evaporator space and with an externally disposed condensor. A hygroscopic liquid is contained in the continuous length of capillary material for absorption of moisture in the evaporator space and for elimination of moisture outside the refrigerator wall. The two ends of the continuous length of capillary material are arranged in liquid-transmitting contact with each other so that the hygroscopic liquid flows in a closed circuit.

Abstract: Water condensed from the air drawn over the refrigeration unit of an air conditioning system is collected and directed into a first chamber of a dual chamber reservoir where it is pumped through heat exchanger coils. The heat exchanger coils are placed upstream from the condenser and can be in thermally conductive contact with a fibrous heat exchanging air filter placed across the air intake port of the air-cooled refrigerant condenser for the system. The chilled condensate lowers the air intake temperature and if placed in thermally conductive contact with the filter, cools the filter also. The condensate is then directed to the top of the filter where it is poured onto the filter and allowed to flow down the fibrous surface, thereby evaporating. The latent heat of vaporization in this process further cools the filter which in turn, further reduces the air intake temperature.

Abstract: The disclosure herein describes an evaporation tray made in a single piece of molded plastic that includes a series of posts for mounting the compressor above the bottom wall of the tray so that water collected therebeneath may be evaporated by the heat dissipated by the compressor; well means integrally mounted to the bottom wall of the tray serve to collect water formed from melted frost through a drain tube which has its lower extremity securely received in the well means; the drain tube and the well means are arranged to retain water which thus prevents an air return flow through the drain tube inside the refrigerator.

Abstract: Air conditioning systems particularly suitable for large buildings located where water is not available for evaporative cooling to provide a heat sink. The condensate from the conditioned air is collected at the cooling and dehumidifying coils and is used as make-up water for one or more evaporative cooling towers which act as the heat sink. One of the cooling towers provides cooling solely by conduction with outside air. Air is exhausted from the conditioned space through one of the cooling towers so as to utilize the evaporation of the condensate in the low temperature and low relative humidity air. The invention also provides for improved operation and efficiency in systems without regard to utilizing condensate for evaporative cooling.

Abstract: A room cooling refrigeration apparatus comprising a housing containing an evaporator, a compressor and condenser. A sub-cooling coil is located in a reservoir attached to contain condensate water for cooling refrigerant discharged from the condenser.

Abstract: A water to air heat pump employing an energy and condensate conservation system in which a heat exchange fluid is circulated between two heat exchangers with one normally operating as a condenser and the other normally operating as an evaporator. The condensate from the air passing over the evaporator coil is collected and is passed to the condenser for circulating over the condenser coil. The heat pump is adapted to operate in a reverse mode in which the functions of the heat exchangers are reversed and in which the circulation of the collected condensate to the condenser is terminated.