SU1670300A1 - Stock farm ventilation system - Google Patents

Abstract

The invention relates to the ventilation of livestock buildings and allows to intensify heat exchange. In the supply air duct 1, exhaust duct 2 is installed with a gap, the intake duct has air outlets 3, and the exhaust duct has a moisture outlet. At the junction of the air ducts mates. Exhaust duct 2 is provided with an exhaust shaft 4 with an air outlet window with a damper 6. The inlet duct 1 is connected to the fan 8, the exhaust duct is connected to the fan 9. The inlet fan 8 supplies cold air to the duct 1, simultaneously from the room of the exhaust valve Torus 9 supplies warm air to air duct 2. A streamlined surface with cold air pipes, warm humid air releases part of the heat to cold air, and through shaft 4 is removed to the atmosphere. In this case, condensate forms on the inside surfaces of the warm air pipes and on the outside of the cold air pipes. As a result of the release of latent heat of evaporation, the heated air enters the room, heats it, and the exhaust air is cooled and dried, thereby intensifying the heat exchange. 3 il.

Description

FIG. 2

The invention relates to ventilation and can be used in livestock buildings with significant emissions of heat and moisture.

The aim of the invention is to intensify heat transfer.

Figure 1 shows the ventilation system of livestock buildings, side view; figure 2 is the same, top view; on fig.Z - section aa in figure 2.

A ventilation system for livestock buildings containing intake and exhaust air ducts 1 and 2 mounted horizontally in each other with a gap to form a heat exchanger and air outlets 3.

The system further comprises exhaust shaft 4 with an air outlet window 5 equipped with a damper 6. At the same time, an exhaust air duct 2 is installed inside the inlet duct 1, their edges at the junction are mated, and the inlet duct 1 is equipped with air distributing holes 4, its free end is plugged , the free end of the exhaust duct 2 is connected to the exhaust shaft 4 with the air outlet window 5 and the flap 6, and along the bottom forming the exhaust duct 2 there are made moisture outlet openings 7.

The supply air duct 1 is connected to the supply air fan 8, and the exhaust air duct 2 by a 2-exhaust fan 9 with air inlet nozzles 10. Under the exhaust air duct 2, moisture-collecting trays 11 are installed along the entire length.

The system works as follows.

The supply fan 8 supplies cold outside air to the supply air duct 1. Simultaneously from the opposite side, the exhaust fan 9 supplies warm humid air to the room through the air intake pipes 10 located in the most humid places of the room to the exhaust duct 2. Flowing around the surface of the pipes With cold air, warm, moist air gives off some of the heat to cold air and through shaft 4 is removed to the atmosphere. In this case, water vapor condenses on the inner surfaces of the pipes with warm air and on the outside of the pipes with cold air, as a result of which the latent heat of evaporation is released, which also heats the incoming air. The latter enters the intake duct 1, and then through the vent holes 3 into the room. Condensate that is generated flows out of the pipes through moisture discharges.

holes 7 in trays 11 and is removed from the room, which increases the efficiency of heat exchange. As a result of heat exchange, the supply air is heated, and

also cooling and dehumidification of exhaust air.

The most effective mode of operation of the supply and exhaust ventilation system is the mode with excess pressure in

a room that prevents the flow of cold air into the room through building leakages in the structures of the room, and consequently, freezing is prevented. To create

Such a mode, the capacity of the exhaust fan 9 should be somewhat lower than the capacity of the supply fan 8.

In the ventilation system, the overpressure mode in the room can also be ensured with a higher exhaust fan capacity than a fresh air blower. To do this, the flap 6 is opened and part of the dried and cooled air returns through the window 5 to the room, and the other part is removed through the shaft 4 to the atmosphere. By adjusting the degree of opening of the shutter 6, it is possible to regulate the volume of air removed into the atmosphere and returned to the room.

Increasing the capacity of the exhaust fan 9 with the damper open allows for obtaining the required relative humidity of the air at the expense of drying it out, rather than increasing the supply air. At the same time, the capacity of the supply fan 8 is selected according to the hazard removal condition , about

30% less than the condition of removing excess moisture. The power of the internal air heater is reduced by the same amount.

Claims (1)

Invention Formula Ventilation system of livestock buildings containing intake and exhaust ducts installed horizontally in each other with a gap with the formation of a heat exchanger and air outlets, characterized in that, in order to intensify the heat exchange, the system further comprises an exhaust shaft with an air outlet a window fitted with a damper, while the exhaust duct is installed inside the intake duct, their edges are joined together in conjunction, the intake duct is equipped with air distributing holes, its free end is plugged, the free end of the exhaust duct is lower forming the exhaust duct with a exhaust shaft from the airflow, moisture discharge vent holes and a gate are made along the pipe. eleven 1 6 S 5 eight -ABOUT QQy№ЈH№ U YY / jC. UCH-4 ± r FIG. J ; /