Heat flow meter and measuring method thereof

A measurement method and heat flow meter technology, which are applied in the field of heat measurement, can solve the problems of high manufacturing cost, low measurement accuracy and complex structure of the instrument, and achieve the effects of low cost, high measurement accuracy and simple structure.

Inactive Publication Date: 2008-10-29
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects of complex structure, low measurement accuracy and high manufacturing cost of the existing technology, the present invention proposes a heat flow meter and its measurement method

Method used

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  • Heat flow meter and measuring method thereof
  • Heat flow meter and measuring method thereof
  • Heat flow meter and measuring method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This heat flow meter is used to measure the heat released by hot water flowing through heat exchange equipment.

[0020] The heat flow meter is composed of an incoming flow thermometer (2), an electric power meter (3), an electric heater (4), an inflow thermometer (5), an outflow thermometer (7) and a totalizer (8). Among them, the inflow thermometer, inflow thermometer and outflow thermometer adopt platinum resistance thermometers. On the inlet pipe (1) entering the heat exchange equipment (6), an incoming flow thermometer, an electric heater, an electric power meter, and an inflow thermometer are successively installed, and the electric power meter is connected with the electric heater; 9) An outflow thermometer is installed on the top. Among them, the inflow thermometer and the inflow thermometer are paired with platinum resistance to make a front temperature difference meter, and the inflow thermometer and the outflow thermometer are paired with a platinum resistan...

Embodiment 2

[0024] This heat flow meter is used to measure the heat released by the heat transfer oil flowing through the heat exchange equipment.

[0025] The heat flow meter is composed of an incoming flow thermometer (2), an electric power meter (3), an electric heater (4), an inflow thermometer (5), an outflow thermometer (7) and a totalizer (8). Among them, the inflow thermometer, the inflow thermometer and the outflow thermometer adopt semiconductor thermometers. On the inlet pipe (1) entering the heat exchange equipment (6), an incoming flow thermometer, an electric heater, an electric power meter, and an inflow thermometer are successively installed, and the electric power meter is connected with the electric heater; 9) An outflow thermometer is installed on the top. Among them, the inflow thermometer and the inflow thermometer are paired with platinum resistance to make a front temperature difference meter, and the inflow thermometer and the outflow thermometer are paired with a...

Embodiment 3

[0029] This heat flow meter is used to measure the heat released by hot water flowing through heat exchange equipment.

[0030] The heat flow meter is composed of an incoming flow thermometer (2), an electric power meter (3), an electric heater (4), an inflow thermometer (5), an outflow thermometer (7) and a totalizer (8). On the inlet pipe (1) entering the heat exchange equipment (6), an incoming flow thermometer, an electric heater, an electric power meter, and an inflow thermometer are successively installed, and the electric power meter is connected with the electric heater; 9) An outflow thermometer is installed on the top. Among them, the inflow thermometer and the inflow thermometer are paired with platinum resistance to make a front temperature difference meter, and the inflow thermometer and the outflow thermometer are paired with a platinum resistance to make a rear temperature difference meter. The temperature of the fluid was increased by 0.15°C by an electric hea...

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Abstract

The invention relates to a heat flow meter and a measuring method thereof. An incoming flow thermometer (2), an electric heater (4) and an inflow thermometer (5) are sequentially arranged on an inflow tube which enters heat-exchange equipment; a fluid is heated by the electric heater to differentiate the temperatures respectively measured by the incoming flow thermometer (2) and the inflow thermometer (5); and an integrator (8) is used for collecting the temperatures (T1, T2 and T3) of the fluid and electric power (W) to obtain heat energy released by the fluid in the heat-exchange equipment: (shown in the above formula), wherein C1-2 is average specific heat when the fluid is between T1 and T2, and C2-3 is average specific heat when the fluid is between T2 and T3. In the method, flow meters are replaced by thermometers, and the integrator is used for collecting the parameters of the incoming flow thermometer, the inflow thermometer and an outflow thermometer, so that the heat energy released by the fluid in the heat-exchange equipment can be obtained according to the energy-balance equations of the electric heater and the heat-exchange equipment. Furthermore the heat flow meter has the advantages of high measurement accuracy, simple structure and low cost.

Description

(1) Technical field: [0001] The invention relates to the field of heat measurement, and relates to a heat flow meter and a measuring method thereof. (2) Background technology [0002] In building heating, residential heating and many heat exchange equipment in industrial production, it is necessary to measure the heat energy released by the fluid passing through the heat exchange equipment for trade settlement and equipment thermal analysis. Instruments that measure the heat energy released by fluids in heat exchange equipment are called heat flow meters or heat meters. The measurement principle of the heat flow meter in the prior art is: measure the flow rate of the fluid passing through the heat exchange equipment, measure the temperature of the fluid entering the heat exchange equipment, measure the temperature of the fluid leaving the heat exchange equipment, and then obtain it by cumulative calculation, namely [0003] Q = ∫ ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K17/08
Inventor 冯青李世武
Owner NORTHWESTERN POLYTECHNICAL UNIV
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