Automatic volume regulating and controlling method for gas-burning machine heat pump

A technology of capacity adjustment and gas engine, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., and can solve problems such as responsibility, poor real-time performance, lack of foundation, and impossible to establish mathematical models

Inactive Publication Date: 2006-08-02
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

It can be seen that due to the complexity of the gas engine heat pump device, it is impossible to establish an accurate mathematical model, which makes the classical control theory or modern control theory lack the most fundamental foundation, and it is difficult to achieve effective control
Although adaptive and self-tuning control theory can carry out online identification of controlled objects lacking mathematical models, this recursive algorithm is responsible and has poor real-time performance.

Method used

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  • Automatic volume regulating and controlling method for gas-burning machine heat pump
  • Automatic volume regulating and controlling method for gas-burning machine heat pump
  • Automatic volume regulating and controlling method for gas-burning machine heat pump

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Embodiment Construction

[0076] The following is attached Figure 4 , the implementation of the present invention is described as follows:

[0077] This embodiment is the operation of the hot and cold water unit of the gas engine heat pump, and the capacity adjustment method is to change the water supply temperature by fixing the water supply flow. The working process of this embodiment is as follows:

[0078] 1) Winter operation

[0079] Take the case of working on a certain day in winter as an example. When starting up in the morning, the outdoor temperature is 0°C. First, the weighted dynamic RBF neural network predicts that the building’s required heat load at the next moment will be 40kW, and this load is used as a feed-forward input. Then, the temperature sensor 15 detects the outlet water temperature of the heat pump unit, assuming that it is currently 20°C. Then the temperature 20°C and the set outlet water temperature of the unit (when the heating mode is running, the set outlet water temp...

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Abstract

The present invention is automatic volume regulating and controlling method for heat pump in gas-burning machine, and belongs to the field of volume regulating technology for heat pump in gas-burning machine. The automatic volume regulating and controlling method includes the macro regulation and control of the mixed control system with rotation speed of the gas-burning machine as target, the intake valve of the gas-burning machine as executing mechanism, the predicted value of building load as main feedforward parameter and building indoor temperature as control feedback parameter; and the micro egulation and control of the mixed control system with the opening of the electronic expansion valve as the regulating target, the step motor as the executing mechanism, the rotation speed of the gas-burning machine as the feedforward parameter and the system overheat degree as the feedback parameter. The present invention has automatic running control of heat pump set in high energy utilizing rate.

Description

technical field [0001] The patent of the present invention relates to an automatic capacity adjustment and control method of a building environment combined cooling and heating energy system driven by various optional clean fuels such as natural gas or biogas. More specifically, it is realized by a gas engine heat pump system. The invention relates to a capacity automatic adjustment and control method for cooling and hot water supply in summer, and heating and hot water supply in winter for year-round operation. Background technique [0002] In recent years, many areas of our country suffer from severe power shortage in summer. According to experts' prediction, the power shortage situation in summer will not be effectively alleviated within a few years. Electric air-conditioning is the main reason for the peak load in summer. The combined cooling and heating units driven by gas engines basically do not need electric load. Facing cost, environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02
Inventor 杨昭程珩杜明星张金亮吴志光赵海波
Owner TIANJIN UNIV
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