SU1511563A2 - Surface-contact heater - Google Patents

Abstract

The invention relates to heat engineering, can be used in devices for heating large masses of water. The aim of the invention is to increase the heat and mass transfer efficiency, which is achieved by dividing channels 7, 8 into gas and water channels by placing the lower edges of the sheets 6 in the lower part of the body 1 below the lower forming nozzle 5 under the water level, as well as fixing the sheets 6 with vertical edges the walls of the casing 1. The temperature of the heated water will tend to the temperature of the flue gases entering the casing 1, not limited to the values of the adiabatic saturation temperature of the gases. 2 Il.

Description

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6 in the lower part of the housing 1 below the lower generatrix of the pipe 5 under the water level, as well as fixing the sheets 6 with vertical red bricks on the wall of the housing 1. The heating temperature The invention relates to heat engineering, can be used in devices for heating large masses of water and is an improvement inventions by auth. No. 918704.

The aim of the invention is to increase the efficiency of heat and mass transfer.

FIG. 1 shows a contact facing: water heater, a longitudinal section ;, in FIG. 2 shows section A-A in FIG. one.

 The contact-surface water heater contains water heaters placed in the 1st stage 2 and 3, over the top of which there is a tubular water distributor 4 and below the lower one there is a flue gas outlet 5, the lower stage 3 is made of heat-conducting sheets 6 of a wavy profile that form a series of vertical channels 7 and 8, over which a water distributor is additionally installed as a horizontal row of grooves 9, each channel 9 communicating with each second channel 8, the lower horizontal edges of sheets 6 of a wavy surface Profiles are installed, in the lower part of the housing 1 below the level of the lower forming pipe 5, the flue gas is vertical, the edges of the sheets 6 are attached to the corresponding walls of the housing 1, to one of which is connected the pipe 5 communicated with each first channel 7 using the slots 10 in this wall, in the upper part of the housing 1 is located the exhaust duct 11.

Contact-surface water heater works as follows. 50

Water through the pipe water distributor 4 irrigates the upper heating stage 2. In the upper stage 2 due to heat and mass transfer between gas and water ,; moving in countercurrent, the water is heated to the temperature of adiabatic: 65–70 ° C.

My water will tend to the flue gas temperature at the inlet to housing 1, not limited to the adiabatic saturation temperature of the gases. 2 Il.

From the upper stage 2 heating water; gravity flows into the horizontal chutes 9 of the lower heating stage 3, from where it is fed into the water channels 8 formed by the sheets 6 of the wavy profile. The heated water is drained into the lower part of the housing G, from where it flows to the consumer. Flue gases enter the water heater through the pipe 5, which is parallel to the sheets 6 and the slits 10, pass through the gas channels 7. The heat of the flue gases in the heated fluid is transmitted through the sheets 6 of the wavy profile. The ingress of flue gases into the channels 8, irrigated with water from the gutters 9, is excluded due to the immersion of the lower edges of the sheets 6 of the wavy profile below the lower level forming the nozzle 5 p8d the water level. In the upper contact stage 2, the water is heated to an adiabatic saturation temperature of the gases, called. still the temperature of the wet thermometer (the maximum possible temperature of water heating when in contact with the gas), and further heating of the water occurs due to the transfer of heat from gases to the liquid through the sheets 6.

Claims (1)

Invention Formula Contact-surface water heater auth.St. R 918704, about t-l and h with the fact that, in order to increase the efficiency of the heat mass, the lower horizontal edges of the sheets of the corrugated profile are inserted into the lower part of the body below the level of the lower part of the flue gas supply nozzle, vertical edges Gtrikr sheets to the corresponding walls of the housing, one of which is connected to the mentioned. flue gas supply pipe connected to each of the first channels using slots in this wall. -four 0us.2