Heat pump heating multi-objective optimization control method based on model

A multi-objective optimization and control method technology, applied in the field of multi-objective optimization control of air source heat pump floor heating, can solve the problems of inability to optimize energy saving of system dynamic characteristics, poor floor heating temperature control, and insufficient comfort

Inactive Publication Date: 2013-04-24
HANGZHOU DIANZI UNIV
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Problems solved by technology

The general air source heat pump floor heating system cannot optimize energy saving according to the ambient temperature and the dynamic characteristics of the system, and generally does not con

Method used

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  • Heat pump heating multi-objective optimization control method based on model
  • Heat pump heating multi-objective optimization control method based on model
  • Heat pump heating multi-objective optimization control method based on model

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[0033] The method of the present invention will be further explained below.

[0034] 1. Establish the temperature dynamic model of air source heat pump floor heating. For the air source heat pump floor heating process system, according to the principle of conservation of mass and energy, the following dynamic models can be obtained:

[0035] (1)

[0036] among them, , , , Respectively represent the air source heat pump water supply temperature, return water temperature, room internal temperature and outdoor ambient temperature. Represents the circulating water volume, the unit is kg / s; Indicates the heat capacity per unit mass of the prescribed water, in J / kg.K; with Respectively indicate that the return water temperature is And the water supply temperature is The total heat capacity of the unit is J / K. Indicates the heat transfer coefficient between the electric heating system and the house, Indicates the thermal conductivity between the house and the external env...

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Abstract

The invention discloses a heat pump heating multi-objective optimization control method based on a model. According to the method, firstly, a dynamic change model for air source heat pump heating temperature is built, on the basis, an air source heat pump energy consumption model is built, a temperature control and energy saving comprehensive objective function is set, and a total multi-objective dynamic optimization model is obtained. The dynamic optimization model is dispersed to an algebraic equation with nonlinear programming through a multipoint shooting method, and then optimum air source heat pump output power is obtained through sequential quadratic programming (SQP) solving technology. According to relation between the air source heat pump output power and frequency, optimum air source heap pump compressor frequency in different moments is confirmed, and finally the optimum air source heap pump compressor frequency is controlled in optimum value through predictive control technology. According to the heat pump heating multi-objective optimization control method based on the model, the requirements for operation energy saving and comfort are considered, the air source heat pump operation frequency can be regulated in real time, and a system is enabled to be in optimizing operation.

Description

technical field [0001] The invention belongs to the technical field of optimization control, and relates to modeling and dynamic real-time optimization control of a heat pump air conditioning and heating system, in particular to a model-based multi-objective optimization control method for air source heat pump floor heating. Background technique [0002] With the improvement of people's living standards, the demand for household floor heating is increasing, and since household floor heating requires more energy consumption, it is very important to reduce energy consumption and maintain a certain degree of comfort. With the shortage of energy and the implementation of national energy conservation and emission reduction policies, the development and utilization of renewable energy is an important way to save energy and reduce consumption. Air source heat pump air conditioners can absorb heat from the air, use one part of electric energy to produce multiple parts of heat, and a...

Claims

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Application Information

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IPC IPC(8): G05B13/00
Inventor 江爱朋丁强王剑姜周曙黄国辉
Owner HANGZHOU DIANZI UNIV
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