SU1373989A1 - Installation for utilizing heat energy of exhaust air - Google Patents

Abstract

The invention relates to a technique of ventilation and air conditioning and allows for increasing the efficiency of utilization of thermal energy with a high degree of dustiness of air. Collection tank-5 is made in the form of two tanks 11 and 12, hydraulically connected to each other by means of overflow wall 13 Drain channel 4 - irrigation chamber (OK) 1 is connected to tank 11, and tank 12 communicates with 13 ff 12 sprayer 3 OK 2 and has a heater 14 placed in it, connected to supply and return pipelines 9 and 10. An air-liquid heat exchanger (TO) 8 is placed in the inlet duct 7 along the air flow before the return air 6. That has bypass channels 15 and 18 with shut-off elements 16, 17 and 19, 20. Contaminated is heated in Water from OK 2 enters tank 11, where mechanical impurities are deposited, and clarified water enters tank 12, giving heat to the coolant. In case of insufficient heating of the supply air in TO 8, it enters TO 6, where it is heated by the heat of exhaust air. If the modes of operation of the supply and exhaust systems do not coincide, it is possible to pre-accumulate the thermal energy of the exhaust air in the tank 5 by turning the t-ry of the water circulating in it with the supply system turned off. 1 il. (L 00 оо со 00; about 20 Гв

Description

The invention relates to the technique of ventilation and air conditioning,

The aim of the invention is to increase the efficiency of utilization of thermal energy with a high degree of air dustiness.

The drawing shows the principles. The scheme of the installation for utilization of heat energy of exhaust air.

The plant for utilization of heat energy of exhaust air contains successively placed in the exhaust channel 1 along the air course the irrigation chamber 2 with the sprayer 3 and the drain channel 4 connected to the collecting tank 5.

The air-air heat exchanger 6 of the exhaust channel 1 is connected to the inlet channel 7, in which the air-liquid heat exchanger 8 is placed with supply and return lines 9 and 10.

The tank 5 is made in the form of two tanks 11 and 12, which are hydraulically connected to each other by means of the overflow wall 13.

The drain channel 4 is connected to the tank 11, and the tank 12 communicates with the bridge with Lem 3 of the irrigation chamber 2 and has a heater 14 placed in it, connected to the supply and return pipelines 9 and 10.

Air-liquid heat exchanger 8 is placed in the inlet channel 7 along the air in front of the air-air heat exchanger 6, which has a bypass channel 15 with locking elements 16 and 17 and a bypass channel 1 about with locking elements 19 and 20.

The installation for utilization of heat energy works as follows.

Dust exhaust air is supplied to the irrigation chamber 2, where it is cleaned from dust and partially cooled. The contaminated heated water from the irrigation chamber 2 flows through the drain channel 4 into the tank I1, where mechanical impurities are deposited and

the veiled water flows through the overflow wall 13 into the tank 12, releasing heat to the circulating pipelines 9 and 10 through the preheater 14 and the heating medium.

After cooling, the water returns from tank 12 through sprayer 3 to irrigation chamber 2. Coming from preheater 14 through feed pipe

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the wire 9 in the air-liquid heat exchanger 8 coolant transfers heat to the supply air and then (cooled) through the return line 10 again enters the preheater 14.

In case of insufficient heating of the supply air in the heat exchanger 8, the supply air through the open shut-off element 19 and when the shut-off element 16 is open enters the air-air heat exchanger 6, where it is additionally heated by the heat of exhaust air, after which the warm supply air is supplied to the consumer, and the cooled exhaust air is emitted into the atmosphere. When the supply air in the heat exchanger 8 is sufficiently heated, warm supply air through the bypass channel 18 with the shut-off element 20 open is supplied to the consumer. In this case, the exhaust air is emitted into the atmosphere through the bypass channel 15 when the shut-off element 17 is open. If the supply air and exhaust systems do not match, it is possible to pre-accumulate the thermal energy of the exhaust air in the collection tank 5 by raising the temperature of the circulating water in it the system. After the supply system is put into operation, the heat energy accumulated in the collecting tank 5 is used to heat the supply air in the air-liquid heat exchanger 8.

The use of the invention makes it possible to significantly increase the efficiency of utilization of thermal energy at a high degree of air dustiness, while using the heat of solid particles contained in exhaust air.

Claims (1)

Invention Formula Installation for utilization of heat energy of exhaust air, containing successively placed in the exhaust channel along the air course an irrigation chamber with a spray gun and a drain channel connected to the collecting tank, an air-to-air heat exchanger connected to the inlet channel, and an air-liquid heat exchanger inside it with feed and return pipelines, о т п п and 3 13739894 with the purpose of another communicating with the sprayer to increase the efficiency of the utilization chamber and is equipped with the placed thermal energy at a high degree in it by a heater connected to dustiness of the air, the combined capacity of the supply and return pipelines in the form of two tanks, hydra-dam, and the air-liquid heat exchanging interconnected unit is placed in the inlet channel along overflow wall and air outlet before air-to-air The channel is connected to one of them, the heat exchanger.