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Natural-gas-smoke condensing heat transfer analysis system

A flue gas condensation and natural gas technology, which is applied in the field of flue gas condensation heat transfer, can solve the problems that affect the research of condensation mechanism and cannot reflect the physical characteristics well, and achieve the effects of saving scientific research funds, multiple functions, and convenient recording

Inactive Publication Date: 2017-12-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problem that the existing mixture of water vapor and other gases cannot well reflect the physical characteristics of the real flue gas condensation process and affects the research on the condensation mechanism, and further provides a natural gas flue gas condensation heat transfer analysis system

Method used

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  • Natural-gas-smoke condensing heat transfer analysis system
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  • Natural-gas-smoke condensing heat transfer analysis system

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Experimental program
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specific Embodiment approach 1

[0035] Specific implementation mode one: as Figure 1~5 As shown, the natural gas flue gas condensation heat transfer analysis system in this embodiment includes a natural gas flue gas generation system, a flue gas cooling system, a flue gas condensation system, a data acquisition system, a quality measurement system, a flue 11, a fan 21, and a flue gas analysis system. Instrument 22;

[0036] The natural gas flue gas generation system includes a natural gas bottle 1, a first water pump 2, a gas water heater 9 and two first valves 3;

[0037] The flue gas cooling system includes two flue gas uniform distribution devices 12, a finned tube heat exchanger 14, two second water pumps 23 and two second valves 24;

[0038] The flue gas condensing system includes a condensing plate heat exchanger 18, a vertical condensing plate 19 and an optical visible glass 20;

[0039] The data acquisition system includes a plurality of electromagnetic flowmeters 4, a plurality of pressure transm...

specific Embodiment approach 2

[0044] Specific implementation mode two: as figure 1 and figure 2 As shown, a plurality of flue gas sampling holes 13 are processed on the side wall of the finned tube heat exchanger 14 in this embodiment, and the flue gas sampling holes 13 are arranged in upper and lower layers. With such a design, samples can be taken at different heights, and samples can be taken to measure the flue gas temperature before and after cooling. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0045] Specific implementation mode three: as figure 1 As shown, the rated heat load of the gas water heater 9 in this embodiment is 30KW, the rated gas pressure is 2000Pa, and the smoke exhaust method of the gas water heater 9 is forced exhaust. Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a natural-gas-smoke condensing heat transfer analysis system, and relates to a condensing heat transfer analysis system. The problems that an existing mode that water vapor is adopted to be mixed with other gas cannot well reflect the physical characteristics of a real smoke condensing process, and the research on a condensation mechanism is affected are solved. A natural gas cylinder is connected with a gas water heater through a stainless steel gas pipe, and a vortex shedding flowmeter and a tensimeter are sequentially arranged on a pipeline of the stainless steel gas pipe; a first water pump is connected with the gas water heater through a first corrugated water pipe, an electromagnetic flowmeter, a pressure transmitter and a temperature sensor are sequentially arranged on the first corrugated water pipe, and the gas water heater is connected with a finned-tube exchanger through a smoke flue; and one of second water pumps is connected with the finned-tube exchanger through a second corrugated water pipe, a liquid flow deflector is arranged on the lower portion of the finned-tube exchanger, and a CCD high-speed camera and a thermal infrared imager are arranged towards one side of optical visible glass. The natural-gas-smoke condensing heat transfer analysis system is used for analyzing natural-gas-smoke condensing heat transfer.

Description

technical field [0001] The invention relates to a condensation heat transfer analysis system, in particular to a natural gas flue gas condensation heat transfer analysis system, which belongs to the technical field of flue gas condensation heat transfer. Background technique [0002] When natural gas is used as fuel, the flue gas produced by natural gas combustion has about 20% water vapor and 80% non-condensable gas by volume. In order to improve the thermal efficiency of thermal equipment, the exhaust temperature of natural gas flue gas is generally controlled between 40°C and 50°C to recover part of the sensible heat in the flue gas and the latent heat of vaporization of water vapor. In order to make better use of the heat in flue gas, it is necessary to study the heat transfer characteristics of water vapor condensation in natural gas flue gas. At present, the method of mixing water vapor and other gases is used in the laboratory to simulate the natural gas flue gas aft...

Claims

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Application Information

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IPC IPC(8): F24H1/10F23J15/06F23M11/04
CPCF23J15/06F23M11/047F24H1/107Y02E20/30
Inventor 孙志浩高建民王鑫王志强王丕嶺韩建伟杜谦吴少华
Owner HARBIN INST OF TECH
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