RU2583603C1 - Method for heat preparation of air - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: invention relates to heat and cold supply of buildings and structures for various purposes and can be used for energy-saving and environmentally friendly large volumes of air conditioning. To achieve this result in known method of heat preparation of air, which involves placing in river water of heat exchange channels and withdrawal of water or release of low-potential heat energy by arranging movement of atmospheric air into channels in presence of temperature gradient between air and water, removal or reduction of heat energy of natural vibrations of river water temperature and atmospheric air is accompanied by power regulation of heat flow by changing air flow in heat exchange channels and temperature gradient between air and water is provided by control of temperature mode of river flow.

EFFECT: proposed solution improves energy efficiency of heat and cold supply.

1 cl, 1 dwg

Description

The invention relates to the field of heat and cold supply of buildings and structures for various purposes and can be used for energy-saving and environmentally friendly conditioning of large volumes of air.

A known method of heat treatment of air, including the device in the soil array of heat transfer channels, the organization of movement of heat carrier through them and the extraction of soil from the soil or discharge into the soil of low potential thermal energy (RF patent No. 2499197, publ. 20.11.2013, bull. No. 32).

The disadvantages of this method are the significant cost of placing heat transfer channels of large cross section in the soil and low energy efficiency due to the small amount of heat removal or heat loss per unit length of heat transfer channels.

A known method of heat treatment of air, including placing heat transfer channels in river water and extracting low-potential heat energy from the water or discharging into it by organizing the movement of atmospheric air in the channels in the presence of a temperature gradient between air and water (USSR author's certificate No. 1321906, published 07.07. 1987, bull. No. 25).

The disadvantage of this method, adopted as a prototype, is the low energy efficiency of heat treatment of air due to the lack of regulation of the heat transfer process with natural temperature fluctuations of river water and atmospheric air.

The objective of the invention is to increase the energy efficiency of heat treatment of large volumes of air.

This is achieved by the fact that in the method of heat treatment of air, which includes placing heat exchange channels in river water and extracting low potential heat energy from the water by organizing the movement of atmospheric air in the channels in the presence of a temperature gradient between air and water, recovering or dumping heat energy with natural fluctuations in the temperature of river water and atmospheric air, they are accompanied by regulation of the heat flow rate due to a change in air flow into the heat exchange channel x, a temperature gradient between the air and water is provided by adjusting temperature river flow.

Distinctive features are the regulation of the heat flux power during natural fluctuations in the temperature of river water and atmospheric air by changing the air flow in the heat exchange channels, as well as providing a temperature gradient between air and water by regulating the temperature regime of the river flow. These features make it possible to transfer the maximum amount of thermal energy from water to air or vice versa with minimal energy consumption for air movement.

The technical result of the proposed solution is to increase the energy efficiency of heat treatment of air.

The inventive method is illustrated in the drawing, where 1 is a river; 2 - fan station; 3 - discharge air duct of the fan station; 4 - an inlet collector; 5 - heat exchange air ducts; 6 - exhaust manifold; 7 - thermally insulated air duct; 8 - an object of heat and cold supply, for example, a complex of sports facilities; 9 - dam; 10 - reservoir.

The method is as follows.

A fan station 2 is installed on the bank of the river 1. The discharge channel 3 of the fan station is mated to the inlet manifold 4, to which several heat exchange air ducts 5 made of metal pipes are connected, laid through the river channel to the other bank to the exhaust manifold 6, from where the heat-treated air is delivered through a heat-insulated channel 7 to the consumer of cold or heat 8. To regulate the temperature regime of river water, a heat exchange installation is placed on a section of the river with a zaregul siered drain adjacent, for example, to the lower pool of the dam 9.

In the hot season, atmospheric air moved by the fan 2 through the ducts 5 gives off its heat to river water, as a result of which cooled air enters the consumer. In the cold season, the air supplied to the heat exchange channels draws heat from the river water and is supplied to the consumer heated to positive temperatures. The most important condition for the energy efficiency of the described heat transfer processes is to ensure the optimal speed of equalization of air and water temperatures along the length of the heat transfer channels. To fulfill this condition, with natural temperature fluctuations in atmospheric air and river water, the power of the heat flow through the walls of the channels immersed in the river is adjusted accordingly. If the temperature equalization at the current temperature pressure between the water in the river and the atmospheric air occurs closer to the end of the heat exchange sections, increase the air flow in the ducts. Conversely, if the length of the heat exchange sections is insufficient to equalize the temperatures, they reduce the air flow.

To increase the current values of the temperature gradient between atmospheric air and river water, regulate the temperature of the water in the river by changing the depth of water intake in the reservoir 10 or by redistributing the volume of river runoff into the lower pool of the dam 9 over time.

The implementation of the method is most effective in the lower pools of dams of high-pressure hydroelectric power plants (HPS), where high temperature gradients between atmospheric air and river water are recorded year-round. For example, the water temperature in the Yenisei River in the area of the city of Krasnoyarsk, located 40 km below the dam of the Krasnoyarsk Hydroelectric Power Station, in the summer months does not exceed 6 ÷ 12 ° C, and in winter the river maintains a positive temperature without freezing even in fifty-degree frosts.

The application of the proposed method allows to increase the energy efficiency of conditioning large volumes of air in connection with the possibility of regulating the process of its thermal preparation in heat-exchange channels immersed in the river.

Claims (1)

The method of heat treatment of air, including placing heat transfer channels in river water and extracting low-potential heat energy from the water or discharging into it by organizing the movement of atmospheric air in the channels in the presence of a temperature gradient between air and water, characterized in that the extraction or discharge of heat energy with natural temperature fluctuations of river water and atmospheric air are accompanied by regulation of the heat flow rate due to changes in air flow in heat exchange channels, and t The temperature gradient between air and water is provided by regulating the temperature regime of the river flow.

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