SU1491983A1 - Outer concrete wall enclosure - Google Patents

Abstract

The invention relates to external enclosures for rooms with high air humidity, in particular, pulp and paper, textile and other industries. The purpose of the invention is to increase the durability and heat-shielding qualities of the enclosure by reducing the moisture content of the outer layer to its sorption moisture. Concrete wall fencing with ventilation ducts 1 is equipped with heat exchangers 4 installed in the latter, which are arranged with a gap in relation to the channel walls. The channels have the shape of an ellipse with a ratio of semi-axes not more than 4: 1, a distance from the axis of the channels to the outer surface of the enclosure not more than 1/4 ... 1/3 of its thickness, the gap between the channels is 1.0 ... 1.5 thickness of the outer lay 2 Il.

Description

31491

The invention relates to building structures and can be used in the construction of industrial enterprises of the construction industry, paper and paper, textile and other industries with a high level of energy, technological emissions and high humidity in the room.

The aim of the invention is to increase the durability and heat-shielding qualities by reducing the moisture content of the outer layer to its sorption moisture.

Figure 1 shows the proposed wall fence; Fig 2 is a fragment of a wall enclosure.

The wall enclosure, made either from panels or in a monolith, contains vertical ventilation ducts 1, which divide the enclosure into the outer 2 and inner 3 layers. The thickness of the outer layer is from 1/4 to 1/3 of the thickness of the enclosure B each channels 1, having the form of an ellipse with a ratio of semi-axes of not more than 4: 1, are installed with an air gap heat exchanger 4, for example, from a metal pipe. In channel 1, it is conditionally possible to distinguish an inlet zone (air heating zone) in which heat exchanger 4 is located. Inlet ports 5 of the channel connect channel 1 to the outside air and are located at a mark corresponding to (it has a beginning height of the zone in a room with increased air humidity, for example for a pulp and paper mill, this is the level of the location of the paper machines. If there are windows in such a room, the holes 5 are also located above the windows. The outlets 6 are formed to exit outside the roof eaves or under the window. The spacing between the channels is 1.0 ... 1.5 thicknesses of the outer layer. The elements of the heat exchangers located in these gaps are isolated from the concrete by thermal inserts 7.

Under the action of natural gas, external air through the inlet 5 enters channels 1 and as it progresses it is heated to a design temperature of 5 ° C. The heated air accumulates the migrating moisture from the inner layer 3 of the enclosure. At the same time, moisture migrates through the gaps between the channels and into the outside

Q

five

0 5 0 5 0

0

five

2nd layer 2 fencing. However, when choosing 1 olycine outer layer, equal to 1/4 ... 1/3 of the thickness of the barrier, width of the gap between the chamber (and, equal to 1.0 ... 1.5 outer layer, air temperature in the room, equal to 5 ° C, which is provided by a heat exchanger located with an air gap in channels with an elliptical cross section with a ratio of semi-axes up to 4: 1, according to the invention, this amount of moisture is insignificant and therefore does not have a significant effect on the design value of the durability of the outer layer.

A liquid that is non-freezing at the temperature of the coldest day is used as the coolant in case of an emergency shutdown of the coolant supply. When the outside air temperature is -5 ° C, the heat transfer system can be turned off, as in this case there is enough natural driving force for effective ventilation of the fence.

The sorption moisture content of the material of the outer layer of the wall enclosure is provided at a ventilation air flow rate of 0.025 per linear meter of wall length at the channel thickness (the length of the small axis of the channel) is about 0.05 m. Such air flow is created when using a pipe with a length of about 2 m and with a diameter from 25 to 30 mm.

The use of the proposed wall fence in comparison with the known technical solutions provides increased durability of exterior walls of light and cellular concrete by reducing the moisture of the material of their outer layer of industrial buildings of industries with high energy levels of technological emissions of high humidity in the room.

 The proposed wall fence can be reduced by 20% compared with the thickness of similar non-ventilated walls of industrial buildings with dry 11.1 or normal humidity conditions of their premises.

At the same time, a reduction in metal consumption per communit is achieved. in comparison with the solution, and in which heat is used as the coolant, air is heated.

5U91983

The use of the invention is particularly advisable in industrial buildings with high levels of heat from process emissions. This heat is utilized in heat exchangers embedded in the ventilation ducts of the fence, with a negligible expenditure of energy for the circulation of the coolant.

Claims (1)

Invention Formula An outer concrete wall enclosure containing vertical ventilation ducts dividing it into outer and inner layers, l and 1C e e so that, in order to increase its duty of sheep and heat-shielding qualities by reducing the moisture content of the F and the outer layer for its sorption humidity, it is equipped with heat exchangers located in air ducts with an air gap relative to channel walls, the channels having an ellipse shape in cross section with a semi-axis ratio not exceeding A: 1, the distance from the channel axis to the outer surface of the fence is 1/4 ... 1/3 of its thickness, and the length of the gap between the channels is 1 , 0 ... 1.5 thickness of the outer layer. T 6