Abstract: In a self-contained air conditioner unit of the reversible type having cooling and heating cycles, a no-drain heat pump is provided wherein in the cooling cycle condensate water collected on the indoor heat exchanger operating as an evaporator is transferred to the outdoor section of the unit where it is atomized and directed through the relatively warm outdoor heat exchanger operating as a condenser. In the heating cycle, water collected on the outdoor heat exchanger operating as an evaporator during heating is transferred to the indoor section. The condensate is directed into the air flow circulating through the indoor section where it atomizes and passes through the relatively warm indoor heat exchanger to humidify the air.

Abstract: An air conditioning structure having a depending centrally located outlet opening and auxiliary air inlets disposed laterally with respect thereto in combination with an air handling mechanism coupled to the outlet and auxiliary air inlets thereof. The air handling mechanism is located within a special support frame for the air conditioning structure, with the frame being adapted to retain and protect insulative material adjacent the exterior surfaces of the air handler mechanism. The air handling mechanism includes a central supply duct for conducting air from the air conditioning structure to a point of use and has a pair of laterally disposed return air handler ducts for conducting and treating the air returned from the point of use to the air conditioning structure, and further includes an exhaust duct extending from the supply duct by which air from the point of use may optionally be exhausted to ambient.

Abstract: A gaseous source of waste energy, including heat, is passed through a gas to liquid heat exchanger and then a chiller to agitate a water bath and produce evaporation of water for cooling. The heated transfer liquid is passed through a heat exchanger to heat makeup air or the like, while, alternatively, chilled water from the chiller is passed through the heat exchanger to cool the makeup air. The source of waste energy, including heat, is normally a grease extraction ventilator mounted to receive fumes and heated air from cooking equipment. Any other source of waste energy is normally suitable, such as heated air which has risen to the upper portion of a large room or enclosure, such as an auditorium, theater, meeting hall or the like. The heated air removed from such a position is adapted in part to be recirculated, but all of it may be used to furnish heat for heating fresh makeup air. Several forms of chiller, including specialized double compartment chillers, are disclosed.

Abstract: A gaseous source of waste energy, including heat, is passed through a gas to liquid heat exchanger and then a chiller to agitate a water bath and produce evaporation of water for cooling. The heated transfer liquid is passed through a heat exchanger to heat makeup air or the like, while, alternatively, chilled water from the chiller is passed through the heat exchanger to cool the makeup air. Supplemental heating, as by a furnace, or supplemental cooling, as by refrigeration, may be utilized when called for.Separate heat exchangers, as for separate areas, are alternatively supplied with heated transfer liquid or chilled water, or one or more supplied with heated transfer liquid and one or more others supplied with chilled water.The source of waste energy, including heat, is normally fumes and heated air from cooking equipment passed through a grease extraction ventilator.

Abstract: A gas/liquid heat exchanger is provided which comprises means for circulating gas and/or liquid and a plurality of hollow fibres, adapted to receive said gas or said liquid, said fibres being of polymeric material which is inert with respect to said liquid and are permeable to said liquid. Such a heat exchanger considerably improves the efficiency/volume ratio of the appratus, largely as a result of the liquid which permeates through the fibres vaporizing.

Abstract: A cooling system for circulating a fluid past a heat-exchanger comprises a vertical surge column and a cooling tower to reduce the heat level of a circulating fluid for delivery to the surge column. The cooling tower is mounted on the surge column which is adapted to support substantially the entire weight of the cooling tower. Heat-exchanger coils are provided which are coupled to the surge column to receive the circulating fluid therefrom and to return the circulating fluid to the cooling tower. There is also provided a circulating device which is operatively coupled to the surge column, cooling tower, and heat-exchanger coils to circulate the circulating fluid therebetween.

Abstract: A cabinet that maintains heated food at a constant temperature by circulating heated air including means for controlling moisture in the circulating air. A top mounted blower forces the heated air through a louvered panel over pans of food; the louvers are graduated to assure even distribution of air. A water reservoir is employed which includes baffling to prevent water from being spilled when the reservoir is moved, the baffling also permits control over the amount of moisture absorbed by the circulating air.

Abstract: A device for independently controlling the temperature and/or relative humidity in the gas utilized in connection with a life support system formed by a chamber bounded by a bottom wall, side walls, and a top wall, one of the walls of the chamber provided with a gas inlet and a gas outlet, gas spider means associated with the gas inlet and providing gas passageways for segregating portions of the gas introduced into the device through the gas inlet, gas proportioning valve means positioned in association with the gas spider means and in line with the gas inlet to permit independent variable proportioning of the gases to at least two downline gas passageways, at least a first gas passageway traversing the gas spider means and terminating at the gas outlet and a second gas passageway traversing the gas spider means and in fluid communication with the chamber, the gas outlet being in fluid communication with the chamber and with the first passageway in the gas spider means, the chamber being adapted to hold a qu

Abstract: Air contaminated with combustible dust particles is removed and subjected to a high density air scrubber which safely removes the fine combustible dust particles from the contaminated air. The resulting water saturated, cleansed air is mixed with a continuously regulated amount of drier outside air until a desired absolute humidity is achieved, the regulation being responsive to the relative humidity changes within a work area in which the humidity is to be controlled. The air mixture is then conveyed into the work area which imparts a known temperature rise thereto. The temperature rise lowers the relative humidity of the air mixture to the desired level.

Abstract: A vertical blower coil unit for heating and cooling is provided. The unit includes a pair of parallel vertical passageways one or both of which may have a heat transfer coil means located therein for the passage of cold and hot water therethrough. Inlet damper means are provided to bypass the coil means during times when it is not desired to have air pass thereover for either cooling or heating. A collecting pan is provided beneath the coil means for catching condensate falling from the coil means when cold water is passed therethrough and to act as a water reservoir for humidifying purposes when hot water is passed through the coil means.

Abstract: A solar heating and cooling system comprising a double tiered solar collector and heat exchanger that is mounted on a roof at an angle ranging from 30.degree. to 45.degree. with respect to the horizontal, with its upper surface being blackened. Each tier of the heat exchanger includes a series of longitudinal channels, there being upper and lower manifolds communicating with all of the channels. A duct depends from the middle of the upper channel and is connected to an air blower that takes air from the premises being heated or cooled. Another pair of ducts depend from the lower manifold at the opposite end thereof and discharge heated air into the premises. A heat trap in the form of a transparent plastic sheet is removably mounted above the collector and heat exchanger in close proximity thereto.