Performance simulation calculation method for screw compressor

A screw compressor, simulation calculation technology, applied in the field of simulation analysis, can solve problems such as the inability to meet the performance prediction of large-scale variable working conditions

Pending Publication Date: 2021-12-07
顿汉布什(中国)工业有限公司
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Problems solved by technology

[0004] The present invention aims at the technical problem that the simulation calculation in the prior art cannot meet the performance prediction of large-scale variable working conditions, and provides a screw compressor performance simulation calculation method

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  • Performance simulation calculation method for screw compressor
  • Performance simulation calculation method for screw compressor

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Embodiment Construction

[0072] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0073] Please refer to figure 1 and figure 2 , a screw compressor performance simulation calculation method, comprising the following steps:

[0074] Step S1: Establish a mathematical model of the compressor: extract the correction coefficient related to the working condition, perform mathematical regression on the correction coefficient according to the actual measurement results, determine the full load calculation model, perform mathematical regression on the superheat correction coefficient according to the actual measurement data, and determine the superheat correction coefficient;

[0075] In addition, other performance-related influencing factors and corresponding correction factors are determined. Other ...

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Abstract

The invention relates to a performance simulation calculation method for a screw compressor. The method comprises the following steps: establishing a compressor mathematical model, performing mathematical regression on a superheat degree correction coefficient according to measured data, and determining the superheat degree correction coefficient; performing mathematical regression on the gas supply working condition correction coefficient according to the actually measured data, and determining a gas supply correction coefficient; performing mathematical regression on the partial load correction coefficient according to the actually measured data, and determining the partial load correction coefficient; inputting an electric system and a working condition, and calculating the performance of the full-load compressor according to the determined mathematical model of the compressor and the input electric system and working condition; if energy adjustment exists, calculating partial load performance based on full load; judging whether air supply exists or not, and if not, calculating the compressor performance under the condition of no air supply; and if the air supply exists, calculating the performance of the compressor with the air supply based on the performance of the compressor without the air supply. The compressor performance under full load, partial load, different superheat degrees and air supply working conditions can be calculated, the calculation precision is high, and the speed is high.

Description

technical field [0001] The invention relates to the technical field of simulation analysis, in particular to a performance simulation calculation method of a screw compressor. Background technique [0002] There are mainly three types of compressors used in air-conditioning units: centrifugal, screw and scroll. Screw compressors have the advantages of large cooling capacity, resistance to liquid shock, wide operating range, and high reliability. Therefore, screw chillers account for nearly half of the market. . In recent years, saving energy, improving energy utilization efficiency, protecting and improving the environment have become the general trend. The annual energy consumption of central air-conditioning accounts for 40% to 60% of the annual energy consumption of buildings, and the energy consumption of cold sources accounts for 60% of the design power of central air-conditioning systems. Therefore, chillers are the main source of central cooling for public buildings....

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Application Information

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IPC IPC(8): G06F30/17G06F30/20G06F111/10
CPCG06F30/17G06F30/20G06F2111/10
Inventor 王勇王黎明卢沙沙李文晶王华伟王凌孙丽余江海王发忠
Owner 顿汉布什(中国)工业有限公司
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