SU918698A1 - Method of heating incoming air - Google Patents

Description

I

The invention relates to air conditioning technology.

There is a known method of heating the supply air by treating it in a contact apparatus with a solution of lithium chloride, preheated in the second contact apparatus when interacting with the exhaust

AIR 1

The disadvantage of this method is higher power consumption. This is due to the fact that the exhaust air gives the solution a much larger amount of moisture than can be transferred from the solution to the fresh air, and this leads to a decrease in the concentration of the solution without needing it, restoring it.

The purpose of the invention is to reduce energy costs.

The goal is achieved by the fact that. Before heating, the lithium chloride solution is additionally heated in a surface heat exchanger located in front of the second contact apparatus along the exhaust air.

FIG. 1 shows one of the possible settings for the method of heating the supply air; in fig. 2 - the 3-a-diagram shows the characters of changes in the parameters of the interacting media.

The installation contains a contact apparatus 1 for heating and cooling the supply air, connected by the air supply duct 2 to the serviced room 3, which is connected by the air duct 4

10 with a surface heat exchanger 5 disposed in front of the second contact apparatus 6 dp for drying and cooling exhaust vent. The solution concentration sensor 7 is connected by a pulse line 8 to a control valve 9, which is connected to the surface heat exchanger 5 and the bypass pipe 10 to the second contact device 6.

The method of heating the supply air is carried out as follows.

The fresh outside air is heated and moistened in the contact apparatus 1 of the plant; ; by the thief of lithium chloride and supplied through the air duct 2 to the serviced room 3. Warm air removed from the room / 3, through the air duct 4 is fed to the top of the heat exchanger 5, where it is dried beforehand and cooled with a lithium chloride solution having a shock temperature of the dew point temperature verificated cyoin air. In this case, the dissolving gaggy chloride solution is heated up dully and then finally heated in the second contact device. 6., cooled and 1 m in a heat exchanger 5. Next, the heated and water-enriched solution is fed to the contact unit 1 for the treatment of fresh air, then the cold solution is fed to the control valve 9, which is 1) depending on the concentration change of the solution after interacting with The air in the koshtaktnyh devices 1 and 6 divides the flow of the solution into two streams. One of the buses passes through the surface of the SCENEOS 5, and the second through the bypass pipe 10. The control valve 9 for the regulating valve 9 flows through the impulse line 8 from the sensor 7 to the concentration of the solution installed in the pallet of the contact apparatus I. After that, both streams are mixed and It is fed again to the second contact apparatus 6. The processes of changing the state of the air and the solution of lithium chloride in the 3-3 diagram of the humid air in the unit operating according to the proposed method are shown in FIG. 2 where 3 is heat containing, d is the moisture content of the air. The external supply air with param- eters of the HO point enters the installation, is heated and 5g is humidified in the device compartment 1 through the HO-HK line. The increase in its moisture content is equal to d s1ts. The change in the parameters of the solution of the solution is higher. Modeling with inlet and air inlet voapy occurs, respectively, through the lines Zhh-Zht and Zht-Zhh. In a single pack 4 flow of solution, its concentration varies extremely little, the lines Zhh-Zht and Zhh-Zhkh merge into one and in fact coincide with Piin Ep - const. Exhaust air is dried and cooled in a surface heat exchanger 5 (UC line), and then gives up its heat and moisture to the solution when it comes in contact with it in apparatus 6 (US-UK line). In the proposed method of changing supply and exhaust air in contact pins { Ovitslavny in dy and the solution receives and gives the same catches of moisture, therefore, there is no need to restore the concentrate solution chlorine-lithium. With varying parameters of the steam of the air tank, the ratio of the amount of solution passing through the surface heat exchanges and the bypass pipe that is redistributed by the damper valve changes in years. The formula of the invention The method of heating the supply air by about% of its charge in a co-contact apparatus with a solution of lithium, previously heated in the second contact apparatus with its detrimental effect with: exhausted air, so as to reduce energy consumption, chlorine solution; before heating, the shea is additionally heated in an ashgarate located in front of the second contact on a hood of an exhaust surface heat exchanger. ./. Sources of information, schtigale into account in the examination 1. Qutteman N. Warmeruckgeiwinnung mit rekuperat vena warmeaustaustihern. Germany. Her, - zung, Uiftung, KHmatechnik Haustedinik. Bd 26. N 12, G975, c. 446-451.

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Claims (1)

-! Claim A method of heating the supply air by treating it in a contact apparatus with a solution of lithium chloride preheated in a second contact apparatus with 30 interactions with exhaust air, which is based on the fact that, in order to reduce energy consumption, a solution of lithium chloride before heating, they are additionally heated in a surface heat exchanger located in front of the second contact ₃₅ apparatus along the exhaust air. / Sources of informant taken into account during the examination 40 1. Gutteman N. Warmeriiekgewinnung mit rakuperativena warmeaustausthern. Germany. Hei - zung, Liiftung, Kiimatechnik Haustechnik. Bd 26. No. 12, 1975, c. 446-451. / I, 1 918698 ' VNIIIPI of the USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Branch of PPP ’’ Patent, Uzhhorod, st. Project, 4 *