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Frosting uniformity measurement method and system

A measurement method and measurement system technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problems of not being widely used, inappropriate equipment size, high equipment cost, etc., and achieve accurate system structure The effect of frost uniformity, low cost and simple measuring device

Inactive Publication Date: 2017-09-15
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0006] Previously, researchers developed a variety of methods to directly measure the degree of frosting, such as microscopy, low-energy laser methods, micrometer methods, and infrared camera methods, but due to the inappropriate size of the equipment or the high cost of the equipment, these methods have not been widely used in practical applications

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  • Frosting uniformity measurement method and system
  • Frosting uniformity measurement method and system

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Embodiment Construction

[0049]The embodiment of the present invention discloses a method for measuring frosting uniformity, which is used for outdoor multi-loop heat exchangers of air source heat pumps to solve how to measure the frosting uniformity of air source heat pumps with outdoor multi-loop heat exchangers Determination, in order to carry out targeted defrosting work and other technical issues.

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] see figure 1 , figure 1 It is a schematic flow chart of the method for m...

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Abstract

The invention discloses a frosting uniformity measurement method and system. The system is applicable to an outdoor multi-loop heat exchanger of an air source heat pump. The method comprises the following steps: acquiring the receiver voltage VOUT of a photoelectric sensor wound around the coil pipe outlet of each heat exchanger loop at the same time; exporting the output voltage signal UTEPS of each photoelectric sensor through logical operation; acquiring the frosting amount F of each heat exchanger loop through logical operation; comparing the frosting amount F of one heat exchanger loop with those of the other heat exchanger loops, and selecting the maximum value and the minimum value; and calculating the frosting uniformity FEV. The method has the advantages that only several related physical quantities need to measure; the voltage value of each photoelectric sensor is regarded as the most important measurement data; the measurement mode is simple; the relatively precise measurement can be performed without very large equipment; and the air source heat pump needs not be stopped in the measurement process. Therefore, the technical problem about how to measure the frosting uniformity of the air source heat pump provided with the outdoor multi-loop heat exchanger and other related problems can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of air-conditioning equipment, and more specifically, relates to a method for measuring the uniformity of frosting, which is used for an outdoor multi-loop heat exchanger of an air source heat pump, and also relates to a system for measuring the uniformity of frosting. Background technique [0002] A heat pump is a device that transfers thermal energy from a low-level heat source to a high-level heat source. As a kind of heat pump technology, the air source heat pump uses the energy in the ubiquitous air as the heat source, and drives the compressor to run with a small amount of external electric energy to achieve energy transfer and energy level improvement. It has many advantages such as energy saving, environmental protection, convenience and high efficiency. It is a representative of the high-tech industry of "energy saving and environmental protection" in today's country. [0003] Due to the advantages...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 宋孟杰马明威邹文科
Owner GUANGDONG UNIV OF TECH
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