Abstract: Fresh inlet air is precold by the cool air discharging from the enclosure by the means of a heat exchanger to become still colder as the result of evaporation inside the evaporative cooler so producing useful air colder and with less water than conventional evaporative cooler. A heat exchanger is disclosed which comprises of numerous exhaust and suction canals adjacent to each other in which is provided aluminium lace for the purpose of exchanging the heat. The cool discharged air passes through the exhaust canals and leaves the heat exchanger cool to outside space and inlet fresh air passes through the suction canals separately relationship with discharged air and after becoming cool leaves the heat exchanger inside the evaporative cooler to effect evaporation.

Abstract: An air conditioner wherein supply air is first passed through the supply air passages of an air-to-air heat exchanger, then over a first refrigerant-to-air heat exchanger, into the space to be air conditioned, and return air from that space is passed throught the air-to-air heat exchanger, through a second refrigerant-to-air heat exchanger, and discharged to atmosphere, the refrigerant heat exchangers being the condenser and evaporator of a closed refrigeration system driven by a heat pump compressor.

Abstract: The combination of a cooling tower and a tank containing packaged, eutectoid salt compositions. The tower provides cooled water to freeze the salt compositions, which are later used to chill water for air-conditioning a building.

Abstract: Apparatus for humidity and temperature control of the air in an enclosure comprising brine-vapor-air direct heat exchanger apparatus disposed in communication with an enclosure and a brine reservoir arranged to store brine and to be exposed to naturally occuring temperature gradients for desired conditioning of the brine. The temperature gradients may be relatively short term, such as day-night or may be longer term, such as summer-winter.

Abstract: A substantially conventional evaporative cooler assembly is provided incorporating a water sump having an overflow and with which a float valve equipped pressurized supply of cool ground water is operatively associated for admitting water into the sump to an operating level slightly below the overflow level. A pump assembly is provided for pumping water from the sump to an evaporative pad through which air flowing through the cooler passes and a mechanical refrigeration unit including a compressor, evaporator coil and condenser coil is operatively associated with the cooler assembly.

Abstract: An evaporative air conditioning device which in the cooling phase subjects the air to be treated to evaporative treatment. Prior to evaporative treatment the air to be treated is enthalpically heated to expand the air utilizing radiant solar energy to lower the water content per unit of volume and also the wet bulb temperature. In the preferred embodiment, a heat absorbent material is placed adjacent the inlet ducts to the unit. In the heating phase, the device is thermostatically controlled to provide solar induced heating during periods when sufficient solar energy induced heat is available.

Abstract: A flashing lamp for vehicles incorporates a base with an upstanding integral boss defining a worm gear. The base and the boss are of plastic or equivalent material. A frame is rotatable about the axis of the worm gear, the frame supporting at least one lamp. A motor is supported from the frame and directly rotates a worm which engages the worm gear. Brush and ring elements are provided to transmit electrical energy through the stationary base to the rotating frame and its electrical components.

Abstract: An auxiliary cooler shell for installation over and around a conventional evaporative cooler for the enhancement of the cooling effectiveness and efficiency of the existing cooling system, the auxiliary shell incorporating evaporator pads and a water distribution spider that is supplied by the water pump of the conventional cooler over which the shell is installed.

Abstract: Systems and methods are provided to regulate the environment in a greenhouse where food and flower production is carried out, and in which outside air is inducted into the enclosure of the greenhouse through an evaporative cooler. A portion of the inducted air is recirculated, selectively heated or cooled and dehumidified, and mixed with the inducted air after contact with the agriculture in the greenhouse.

Abstract: The disclosed air conditioner comprises a suction and an exhaust blower connected to a common electric motor and disposed on a suction and an exhaust passageway adjacent to a suction and an exhaust port on the outdoor side respectively. The suction passageway crosses the exhaust passageway in a heat exchanger and is connected to an indoor exhaust port. A humidifier is disposed between the heat exchanger and an indoor suction ports to humidify and cooler the sucked indoor air within the heat exchanger. Also a reclaimable dehumidifier may be disposed adjacent to the suction blower to decrease the humidity of the sucked outdoor air.

Abstract: A cooling method and system are provided wherein a stream of relatively wet warm air is passed in contact with a liquid hygroscopic material in a water cooled absorbent zone to produce a stream of relatively cool dry air. The latter is then passed through an evaporative cooling zone in contact with water and the resulting cooled air or water is used as a cooling or refrigerating medium. A portion of the cooled water is used to cool the absorbent zone to an extent that the dried stream of air has a greater capacity to evaporatively cool the water than it would have in the absence of such cooling, thereby permitting the production of desired stream of cool, dry air.

Abstract: Air conditioning apparatus for the sensible cooling of useable air by the evaporative process at a cost of operation substantially lower than that of mechanical refrigeration of the same capabilities, and advantageously comprised of modular evaporator and blower units and multiple stages thereof with the use of substantially permanent inexpensive plastic materials conducive to the efficient absorption of heat between separate columns of air, one column subject to the evaporative cooling process with no energy change, and the other column subject to the sensible cooling process with a subtraction of energy from the useable air.