Patent GB-591057-A (GB)
Abstract: 591,057. Moistening air or gases. CLIMATOR, Ltd., and BERLOWITZ, E. (Representative of BERLOWITZ, M.). Oct. 14, 1944, No. 19862. [Class 55 (ii)] [Also in Group XIII] Apparatus for heating and cooling air or gas comprises a cylindrical vessel 1, Fig. 1, which is provided at its upper end with an air inlet and its lower end with an air outlet 15 and also a tank 2 for liquid, and houses a pair of concentric cylindrical walls 3, 4 defining annular channels 5, 6 for the passage of air, the wall 3 being closed at the top, where it is provided with an air outlet 17 having two branch conduits 21, 22, but open at the bottom so that the two channels 5, 6 are in communication above the level of liquid in the tank 2. Preferably the outer surface of the wall 3, which is made of high heat-conducting material, is formed with ribs or pins 7, and filling bodies 14 may be provided within the channel 6. A fan 11 is fitted above the top of the wall 4 and is driven by an electric motor 10, the latter also rotating a centrifugal pump 12 which is housed within the wall 4 and serves to raise liquid from the tank 2 and supply it to the filling bodies 14. If it is desired to supply a room with cool air, the tank 2 is filled with water and the motor 10 started, whereupon the fan 11 first draws air through the inlet in the top of the vessel 1 and circulates it through the channels 5, 6 successively to the conduit 22 open to the atmosphere, water being simultaneously applied to the filling bodies 14 by the pump 12, but when the air passing through the apparatus reaches a sufficiently low or stationary temperature the outlet 15 in communication with the room is opened by a damper 16. Should the temperature of the room become too low then some or all of the warmer air passing to the atmosphere through the conduit 22 may be diverted to the room through the conduit 21, by adjustment of a damper 23 controlling said conduits 21, 22. Alternatively, if warm air is required to be supplied to a room, the water is replaced by a drying liquid, such as a solution of magnesium chloride, and return air is circulated through the apparatus to the outlet 21. Since the liquid in the tank 2 assumes approximately the same temperature as the air at the lowermost point of the channels 5, 6, the apparatus may be used for cooling water or other evaporative liquid or heating drying liquid, in which case an insulated storage tank 32 is provided, the tank being supplied through the pipe 30 and having an overflow 33, and warm water from a second storage tank, or a mixture of warm and cold water from the two tanks, being fed and sprayed over the filling bodies by a separate pump, the pump 12 being dispensed with. In a modification the space between the two walls constitutes the passage 5, and the spaces within the inner wall and between the outer wall and the vessel 1 are packed with filling bodies to form the passage 6. In another arrangement a series of tubes depending from a common air outlet duct are used, the lower ends of the tubes opening into the interior of the vessel 1 above the liquid tank 2 which may be divided into two parts, one part being filled with an evaporative liquid and the other with a drying liquid and means being provided for applying to the upper ends of the tube whichever liquid is required. Electric heaters may be disposed in the drying liquid and in the warm air outlet conduit. A further construction comprises a vessel 70, Fig. 4, locating a plurality of horizontal tubes 71 extending from an air inlet duct 76 with fan 77, the interior of the tubes constituting the inlet channel and the space within the vessel around the tubes forming the second channel which may locate filling bodies. A nozzled water supply pipe 74, a conditioned air outlet pipe 75, and an air inlet by-pass pipe 80 and an outlet 84 to atmosphere are also provided, with electric &c. heaters 82, 83 in said pipes 80, 75 and dampers 81, 85 controlling the pipes 76 80 and pipe 84 respectively. When cool air is to be supplied through the outlet 75 the by-pass 80 is closed and the atmospheric outlet 84 opened. Alternatively the dampers 81, 85 are rotated to open the by-pass 80 and close the pipe 84, both wholly or in part, and one or both of the heaters 82, 83 brought into operation, whereupon warm air will be supplied through the pipe 75. Specifications 434,671, 456,771 and 571,292, [Group XIII], are referred to.