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Efficient condensation gas water heater for mixed heat exchange and system

A gas-fired water heater and condensate water technology, which is applied to air heaters, fluid heaters, heat exchanger types, etc., can solve the problems of large volume and weight of heat exchangers, high manufacturing costs, etc., and achieve enhanced condensation transmission. The effect of thermal efficiency, reducing the amount of raw materials, and lowering the threshold of use

Pending Publication Date: 2020-01-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the high-power, low-nitrogen, high-efficiency condensing gas-fired water heater is put into use, although it can effectively save energy, its manufacturing cost remains high. The main reason is that the body of the water heater heat exchanger corresponding to the high power is large in volume and weight.

Method used

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  • Efficient condensation gas water heater for mixed heat exchange and system
  • Efficient condensation gas water heater for mixed heat exchange and system
  • Efficient condensation gas water heater for mixed heat exchange and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 2 middle figure 2 (a) and figure 2 As shown in (b), a high-efficiency condensing gas-fired water heater with hybrid heat exchange in the present invention includes a burner 1 that generates high-temperature flue gas by combustion, and a heat exchanger 2 that wraps the burner 1 to absorb the heat of high-temperature flue gas, and is arranged on The spray system (4) on the heat exchanger (2), isolating the spray system (4) from the heat exchanger (2) and forming an equal pressure smoke hood on the outer wall of the heat exchanger (2) to form a flue gas equal pressure channel (3), covering the shell (5) of the burner (1), heat exchanger (2), equal pressure hood (3) and spraying system (4), the chimney (6) arranged on the shell (5) ); the low-temperature flue gas released by the heat exchanger (2) passes through the channel between the shell 5 and the equal pressure fume hood 3, and is further discharged from the chimney 6 after being absorbed by the spray ...

Embodiment example 2

[0055] In this embodiment, the same symbols are assigned to the same structures as those in Embodiment 1, and the same descriptions are omitted.

[0056] like image 3 middle image 3 (a) and image 3 As shown in (b), the equal pressure fume hood 3 is connected to the shell 5, and the equal pressure fume hood 3 and the shell 5 can be integrally formed by injection molding process or cast iron or aluminum alloy, so as to facilitate the installation and heat exchange of the heat exchanger 2 The arrangement of the water inlet 22 of the heat exchanger and the water outlet 23 of the heat exchanger.

Embodiment example 3

[0058] In this embodiment, the same symbols are assigned to the same structures as those in Embodiment 1, and the same descriptions are omitted.

[0059] like Figure 4 middle Figure 4 (a), Figure 4 (b) and Figure 4 As shown in (c), the spray liquid inlet 41 is arranged on the side of the housing 5, adopting a single-side or double-side liquid inlet method, and adopting a high-pressure flow-equalizing spraying method to cancel the structure of the flow-equalizing pipe 42 and simplify the manufacturing process And ensure the structural strength.

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Abstract

The invention discloses an efficient condensation gas water heater for mixed heat exchange and a system. The water heater comprises a combustor, a heat exchanger, an equal-pressure smoke cover for separating a spraying system for direct contact heat exchange from the heat exchanger, and a chimney; through reasonable thermal performance design, high-temperature smoke is cooled after heat exchange by the heat exchanger, and no condensed water is generated; due to no need to consider the condensed water corrosion of the heat exchanger, the material grade and the process cost of a dividing wall heat exchange device can be reduced; the spraying system for direct contact heat exchange atomizes and sprays out cyclic spraying liquid to fully absorb latent heat of low-temperature smoke; the cyclicspraying liquid can adopt organic working mediums or water working mediums with safety, no poison, low viscosity and dewatering property; the efficient condensation gas water heater is connected witha heat pump to form an efficiency improvement and energy conservation system, so that the temperature of the cyclic spraying liquid is lowered, the condensation heat transfer efficiency of the low-temperature smoke is further improved, and the overall operation efficiency of the water heater and the system is improved; and the efficient condensation gas water heater effectively improves the overall system operation efficiency, and further reduces the smoke carbon emission through a spraying system.

Description

technical field [0001] The invention belongs to the field of energy-saving and environment-friendly heat exchange heat exchangers with improved energy utilization efficiency, and in particular relates to a high-efficiency condensing gas water heater and system for hybrid heat exchange. Background technique [0002] The low-nitrogen high-efficiency condensing gas-fired water heater is an upgraded water heater with advanced technology and market promotion potential after years of technical research and development to meet the increasingly stringent energy-saving and environmental protection emission requirements worldwide. The existing low-nitrogen high-efficiency condensing gas-fired water heater organically combines ultra-efficient and compact heat exchangers and ultra-low-nitrogen, high-efficiency fully premixed burners, and integrates low-nitrogen gas emissions, radiation heat transfer, turbulence and condensation in the field of thermal energy engineering. Strengthen heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H4/02F24H8/00F24H9/00F24H9/14F24H9/18F24H9/20F28D3/00
CPCF24H4/02F24H8/00F24H8/006F24H9/0005F24H9/146F28D3/00F24H9/1836F24H9/2035F24H2210/00Y02B30/00
Inventor 赵钦新桂雍梁志远王云刚邵怀爽
Owner XI AN JIAOTONG UNIV
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