SU992947A1 - Method and apparatus for heating and humidifying air - Google Patents

Description

(5) HEATING AND MOISTURING AIR AND DEVICE FOR ITS IMPLEMENTATION

one

The invention relates to the field of heat and humidity air treatment, mainly in air conditioning systems using solar energy.

The known method of heating and humidifying air, mainly in air-conditioning systems, by contacting air with a water-salt solution heated in a solar heater tJ.

The disadvantage of this method is its low efficiency, which is associated with high temperature, which develops in the space of the heater with direct heating of the water-salt solution in it and causing significant heat loss.

A device for heating and igniting air is known, comprising a water circuit and a circulation circuit of a water-salt solution, including a contact heat and mass exchanger communicated with the air duct, and a solar heater with an absorber and a transparent coating 1 located therein.

A disadvantage of the known device is low efficiency, which is associated with a significant value. the required temperature in the space of the solar collector and, accordingly, increases the material intensity of the device.

The purpose of the invention is to increase the economy by reducing the material consumption of the device.

Claims (2)

This goal is achieved by heating and humidifying the air by contacting it with a water-salt solution heated in a solar preheater, according to the invention and an additional heater, which additionally heats the water to form its vapors, produced by contact with water vapor. In a device containing a water circuit and a circulation circuit of a water-salt solution, including a contact heat and mass exchanger communicated with the air duct, and a solar heater with an absorber and a transparent coating in it, according to the invention, the absorber is located in the heater c. the formation of interconnected upper and lower chambers, the first of which communicated with the water circuit, and the second with the solution circuit. The drawing shows an air conditioning system for year-round air treatment, operating using the proposed method and including the proposed device. The system contains a water circuit 1 and a circulation circuit 2 of a water-salt solution, including a contact heat and mass exchanger 3 connected to the air duct C, and a solar heater 5 with an absorber 6 located in it and a transparent coating 7 The absorber 6 is located in the heater 5 with the formation of interconnected upper and lower chambers 8 and 9 respectively. Chamber 8 communicates with circuit 1, and chamber 9 with circuit 2. The system also contains a closed-type helium heater 10, a peak heater 11, a desorber 12, a water-solution heat exchanger 13, a 1k contact heat and mass exchanger for adiabatic cooling and humidified air, circulating water pumps 15 and 16 , a fan 17; a solar energy accumulator 18; a slurry pump 19; a control valve 20-22; a stop valve 23-27. The air conditioning system works as follows. In winter, the cold air is supplied by the fan 17 to the contact heat and mass exchanger 3. (It deins its heat and evolves with water-saline solution (for example, an aqueous solution of lithium chloride). The strong cooled solution from the heat and mass exchanger 3 goes to the solar energy battery 18 and the pump 19 through valves 22 and 2 is supplied to chamber 9 of heater 5. To chamber 8 of heater 5 by a circulation pump 16 water is supplied through valve 26, which is heated by solar energy. The solution absorbs water vapor. It evaporates, is heated by heat absorption and enters the closed type of solar heater 10 to reheat to the required temperature. From the solar heater 10, through the valves 20 and 2t, the hot diluted solution is sent to the heat exchanger 3, where it gives off heat and moisture to the outside air flowing through the air duct k. In the summer period, the air is blown by the fan 17 through the air duct k to the heat and mass exchanger 3, where it is dried with a cold solution of intermediate concentration, and to the heat and mass exchanger C, in which it circulates during yes, supplied by pump 15, where the air is cooled and humidified to the required parameters. The diluted solution from the heat exchanger 3 enters the solar energy accumulator 18, mixes with the evaporated strong solution and the pump 19 through the valve 23 and the water-solution heat exchanger 13 is fed to the heat exchanger sprinklers 3 A part of the mixed solution from the accumulator 18 by the pump 19 through the valves 22 and 25 is sent to upper chamber 8 heaters Biv solar heater 10 of the closed type. From the solar heater, through the valve 20, the hot solution enters the air desorber 12, where it gives off moisture to the outside air. A strong solution from desorber 12 is directed through valve 27 to accumulator 18. Peak heater 11 operates when the intensity of solar radiation is insufficient. Heating the solution in winter time due to the heat absorption of water vapor reduces the required temperature in the preheater, which will reduce the heat loss in it and increase the efficiency of the process by reducing the material consumption of the system. Claim 1. The method of heating and humidifying air predominantly in air-conditioning systems by contacting air with a water-salt solution heated in a solar preheater, characterized in that, in order to improve efficiency, in heating 5, the water is additionally heated to form its vapors, a;; a heating water-salt solution is produced by its contact with water vapor. 2. A device for heating and humidifying air, containing a water circuit and a circulation circuit of a water-salt solution, including a contact heat and mass exchanger, t with, an air duct and a solar heater with a position in it; swallower and clear coat, distinguished by ee. by the fact that the absorber is located in the heater with the formation of the upper and lower chambers, the first of which are connected to the water circuit and the second to the solution circuit. Sources of information taken into account in the examination 1. Patent SHA (H.C., 2 F 25 V 27/00, published in 1979.