RU2169236C1 - Vacuum plant for production of purified fresh water - Google Patents

Abstract

FIELD: equipment for production of purified fresh water; applicable in agriculture and industry and in household conditions. SUBSTANCE: vacuum plant has heat exchanger-condenser in form of vacuum vessel communicated with vessel for water. In water spraying, it evaporates under effect of deep vacuum in vessel and cools it. Damp air condenses on external surface of condenser-heat exchanger. There are drip pan, receiving, hollow for water catcher. EFFECT: reduced power input and cost of produced fresh water. 1 dwg

Description

 The invention relates to equipment for producing chilled fresh purified water from moist air in agricultural and industrial production and in everyday life.

 With the help of these plants it is possible to obtain purified fresh water in areas where there are no sources of fresh water due to its cold boiling and evaporation, including upon receipt of environmentally friendly agricultural products.

 Of the existing installations, the closest in technical essence to the proposed invention is a plant for producing fresh water from moist air, comprising a water collector, an air duct with a fan located therein, a heat exchanger-condenser, and a droplet eliminator (RU 2056479 C1, 03.20.96, E 03 B 3 / 28).

 The installation contains a refrigeration unit and operates on the principle of using the cold generated by it to condense the water vapor in the humid air supplied by the fan.

 The disadvantages of the installation are the large capital, operating and energy costs when using steam compression refrigeration units using environmentally harmful freon and other expensive scarce materials as a coolant, for example, oil. In addition, the continuous operation of the fan to supply moist air significantly increases energy consumption and reduces the efficiency of the entire process.

 This invention is aimed at solving a technical problem, which consists in reducing energy consumption and cost of produced chilled purified fresh water, increasing the environmental safety of the process, expanding the geographical area of application of the plants.

 As a result of using the invention, energy costs and the cost of the obtained chilled and purified fresh water are reduced, the environmental safety of the process is increased, and the geographical area of use of the plants is expanded.

 To achieve this technical result, a plant for producing chilled, purified fresh water containing a water collector, an air duct with a fan located therein, a heat exchanger-condenser, and a droplet eliminator is characterized in that the heat exchanger-condenser is made in the form of a vacuum tank connected through a thermostatic valve and a valve with a tank for water and, on the other hand, with a high vacuum pump, a condenser and a low vacuum pump, the capacitor being connected through a valve to a water tank, Rich in the lower part of the exchanger-condenser arranged team cavity connected to the spout with the header. The fan can be located above the heat exchanger-condenser and is electrically connected to the air speed sensor. On the outer surface of the vacuum capacity of the heat exchanger-condenser, condensing rods can be radially mounted over the entire height.

 The invention is illustrated in the drawing, which shows a General view of a vacuum installation. It shows a heat exchanger-condenser 1, consisting of a vacuum tank 2 with condenser pins 3 radially mounted over the entire height 3. A fan 4 is located above the heat exchanger-condenser 1, located in the duct 5, a screen 6 with solar panels 7 and an air speed sensor 8. The vacuum tank 2 is connected by a pipe 9 to a high vacuum pump 10, a condenser 11 and a low vacuum pump 12. The capacitor 11 is connected through a valve 13 and a pipe 14 to a water tank 15, which is connected through a thermostatic valve 16 and a valve 17 to a vacuum tank 2. In the tank 2, a level sensor 19 is connected to the control unit 20. In the lower part of the heat exchanger-condenser 1 there is a prefabricated cavity 21, which is connected through a pipe 22 to the water collector 23. A cylindrical droplet separator 24 is installed on the heat exchanger-condenser 1.

 A vacuum installation for producing chilled purified fresh water works as follows.

 Water is throttled into the vacuum container 2, which is under vacuum, from the water tank 15 through the valve 17 and the thermostatic valve 16 through the pipe 18. The air from the vacuum tank 2 is pumped out through the pipe 9 by a high vacuum pump 10 and a low vacuum pump 12. Water vapor condenses in the condenser 11. The movement of water occurs under the influence of the pressure difference: atmospheric in the tank 15 for water and vacuum in the vacuum tank 2. Under the action of a deep vacuum, the water begins to "boil" and evaporate intensively. Intensive heat absorption occurs and the temperature drops. Therefore, the evaporation of water in a vacuum tank 2 in the process of throttling it through a thermostatic valve 16 lowers the temperature in the vacuum tank 2. In this case, the outer surfaces of this tank 2 are intensively cooled, and the cold is transferred to the condensing pins 3. In turn, from the outside, the cooled surfaces of the heat exchanger Condenser 1 is blown with moist air due to the natural movement of the air mass (wind). If there is no wind, then the fan 4 is turned on by an electric signal from the air velocity sensor 8 entering the control unit 20, and the cold surfaces of the heat exchanger-condenser 1 are intensively forcedly blown with moist air. Moisture condenses on the surfaces of the heat exchanger-condenser 1 and, flowing down along them, accumulates in the collection cavity 21. From where it enters the collector 23 through the pipe 22. Water from the condenser 11 through the valve 13 through the pipe 14 again enters the tank 15 for water, from where again throttling process enters the vacuum tank 1. The cycle is repeated.

 The required water level in the vacuum tank 2 is controlled by a level sensor 19, by a signal from which the flow of excess water into the vacuum tank 2 is stopped by the valve 17.

 A vacuum installation for producing chilled purified fresh water can operate both from power supplied from the outside and from solar panels 7 installed on screen 6.

 A vacuum unit for producing chilled purified fresh water can operate in almost any geographical area in the area of water bodies, on sea and river vessels, in deserts, and wetlands, consuming the minimum amount of energy through the use of an energy-saving vacuum unit.

 The technical result is achieved due to the fact that the condensing surfaces of the installation are cooled by an energy-saving vacuum system.

Claims (3)

 1. Installation for producing purified fresh water, containing a water collector, an air duct with a fan located in it, a heat exchanger-condenser, a droplet eliminator, characterized in that the heat exchanger-condenser is made in the form of a vacuum tank connected through a thermostatic valve and a valve with a water tank and on the other hand, with a high vacuum pump, a condenser and a low vacuum pump, while the condenser is connected via a valve to a water tank, the size of the heat exchanger-condenser The prefabricated cavity is connected by a drain pipe with a water collector.  2. Installation according to claim 1, characterized in that the fan is located above the heat exchanger-condenser and is electrically connected to the air speed sensor.  3. Installation according to claim 1, characterized in that on the outer surface of the vacuum capacity of the heat exchanger-condenser, condensing rods are radially installed over the entire height.