SU1423766A1 - Apparatus for complex heat recovery of internal combustion engine - Google Patents

Abstract

The invention relates to mechanical engineering. The purpose of the invention is to increase the efficiency of engine heat utilization and increase its efficiency. The device contains heat exchangers 2, 3, 4 of the cooling system, an utilization open loop 5, a two-section water-gas heat exchanger with sections 6 and 7, a bypass pipeline 8 and a shut-off body 9. The circuit 5 is connected to the water cavities of the heat exchangers 2, 3 and 4 and is provided in the initial section 10 with a circulation pump 1 1. The output section 12 of the circuit 5 is in communication with the heat consumer. A heat exchanger with water cavities 13 and 14 is included in circuit 5, and gas cavities 15 and 16 are connected to the gas exhaust line 19, in which sections 6 and 7 are installed. Section 6 is made with gas 8 bypass pipeline and shut off its organ 9 is included in the outlet section 12 of the circuit 5. Section 7 is included in section 10 and is made with heat pipes 20. Its gas cavity 16 is located below the water, filled with water to form a gas carrier 21 and a layer 22 of water. The pipes 20 are installed between cavities 14 and 16 and are partially immersed in the water layer 22 of the cavity 16. Such a design of the device allows increasing heat transfer from the gases and ensuring their purification from mechanical impurities and soot, as well as increasing the degree of heat recovery. 1 il. 1 (L

Description

7 a

 L / it

G9

- / s

./-i

go

Bij i i i

./-i

go

i I I

4 N5

WITH

about:

O5

The invention relates to mechanical engineering, namely engine building, and can be used in heat recovery systems for internal combustion engines (ICE).

The aim of the invention is to increase the efficiency of heat recovery of internal combustion engines and increase its efficiency.

The drawing shows a diagram of the proposed device.

The device contains at least two heat exchangers for the engine cooling system 1 (for example, water-oil, water and water-air heat exchangers 2, 3 and 4), utilization open loop 5, two-section water-gas heat exchanger with the first and second sections 6 and 7, the pipeline 8 bypass and the body 9 of its overlap.

The utilization circuit 5 is connected to water cavities (not shown) of heat exchangers 2, 3 and 4, is supplied at the initial section 10 with a circulation pump 11 and communicated with its output section 12 from the chemical system; the first heat (not shown). A two-section water-gas heat exchanger is included in water cavities 13 and 14 in the utilization circuit 5, and gas cavities 15 and 16 are connected through inlet and exhaust pipes 17 and 18 to the gas exhaust line 19 of the engine 1, and the first and second sections 6 and 7 installed in the gas outlet line 19, therefore.

The first section 6 of the water-gas heat exchange unit is made with pipeline 8 bypass gases and with organ 9 shut it off and is included in the output section 12 ui: 1izatio} IO1 about circuit 5. The second section 7 is included in the initial section 10 of the latter and is made with heat pipes 20 , its gas cavity 16 is placed below the water, filled with water to form a gas cushion 21 and c. 22 water. Heat pipes 2 (1 are installed between the water and gas cavities 14 and 16 and partially 11O1 are routed to the water layer 22 of the gas cavity 16. Inlet pipe 17 is placed under the water layer 22, and the outlet pipe 18 is in the gas cushion 21.

The device works as follows.

The water pumped through the utilization circuit 5 by the circular pump 11 takes away the waste heat of the engine 1 of the internal combustion in heat exchangers 2, 3 and 4 (water-mass, water-line and water-gas), as well as in sections 6 and 7 water-gas heat exchange (} augshara. Exhaust gases from the engine 1 1 are fed to the gas exhaust line 19 and through the inlet and outlet pipes 17 and 18 to the gas cavity 15 and 16 of sections 6 and 7 of the heat exchange apparatus.

The passage through the gas cavities 15 and 16 of sections 6 and 7 of the heat exchanger, the exhaust gases give off heat to the water of the utilization circuit 5 flowing through the water cavities 13 and 14. In section 7 of the heat exchanger, in addition, the gases supplied to the gas cavity 16 give heat to the water of the utilization circuit 5 with the help of heat pipes 20. At their evaporating ends, placed in the gas cushion 21 and layer 22 of the water in the gas cavity 16, an excess of vapor to the working fluid occurs, which

0 rises, transfers heat to the water in the water cavity 14, and then re-turns into liquid in the condensation ends of the Lell tubes 20. By placing the water cavity 14 in the initial section 10 of the utilization circuit 5 (in the section with a low water temperature) upon contact of water and exhaust gases in cavity 16 occur as a result of the condensation of water vapor in gases formed during the combustion of fuel, i.e. heat is used

Q burned fuel.

Filling the gas cavity 16 with water also increases the heat transfer from the gases and ensures that they are cleaned of mechanical impurities, soot, etc. Section 6 of the heat exchanger connects 5 s to the gas exhaust line 17 and the utilization circuit 5 if additional heating of the water or steam is required . In this case, the shut-off body 9 closes the bypass pipeline 8, and the gases enter section 6 of the heat exchange apparatus

0

rata.

Thus, the degree of heat utilization and the efficiency of the engine are increased.

Claims (1)

Invention Formula A device for the complex utilization of the engine heat of an internal combustion engine containing at least two heat exchangers of the engine cooling system, an utilization open loop connected to the water cavities of the heat exchangers, equipped with a circulation pump at the initial site and communicated by its outlet section to the heat consumer, and a two-section water-gas generator a heat exchanger connected to the water cavities of each section in the utilization circuit and connected to the inlet and outlet connections of each hectare oic cavity to the vent pipe of the engine, wherein the first and second sections are installed in the vent line in series, characterized in that, for the purpose audio povysche- efficiency, the first water-gas heat exchanger section is provided with gas recirculation conduit and organo.m its overlap and included in the output section of the utilization circuit, the second section is included in the initial section of the latter and is made with heat pipes, its gas is 3114237664 The cavity is placed below water, behind and partially immersed in a layer of water, gas is filled with water to form a gas cavity, the inlet is placed under the detours and a layer of water, the heat pipes are installed with a layer of water, and the outlet and gas cavity midushke.