Heat pump and solar heating combined control system, control method and controller

Abstract

The invention particularly relates to a heat pump and solar heating combined control system and control method and a controller, and aims to solve the technical problem of poor linkage of solar energy and a heat pump. In order to achieve the purpose, the heat pump and solar heating combined control method comprises the steps that a heat pump and solar heating combined control mode is started; first heating duration required by a heat pump to heat a water tank is calculated according to the water tank temperature value of the water tank and the heating requirement; according to the fact that the waiting time between the current moment and the water using moment of the heating requirement is larger than the first heating duration, a solar heat collector is controlled to be started, and the heat pump is controlled to be stopped; and when the waiting time is smaller than or equal to the first heating duration, the solar heat collector and the heat pump are controlled to be started. When solar energy and the heat pump are combined for heating the water tank, the solar energy is operated preferentially, so that clean energy is utilized to the maximum extent, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a control system, a control method and a controller for a heat pump combined with solar heating. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] As a natural clean energy, solar energy is widely used by residents to make hot water, but the obvious disadvantage of solar energy is poor sustainability and stability. Air source heat pumps, as heat production equipment with high energy efficiency ratio, gradually replace traditional fossil energy in the field of heating and hot water heating, and due to their excellent stability, there are more and more scenarios for combined hot water heating with solar energy. The current mainstream approach is to roughly judge whether to use solar energy for hot water heating based on the difference between the solar temperature and t...

AI Technical Summary

Problems solved by technology

The current mainstream approach is to roughly judge whether to use solar energy for hot water heating based on the difference between the solar temperature and the water tank temperature, ignoring the changes in ambient temperature and light intensity, as well as the actual hot water usage needs of users, resulting in switching between heat pumps and solar energy. Unreasonable, resulting in waste of energy, and hot water can not respond to user needs in a timely manner

[0004] At present, the control linkage of solar energy and heat pump joint heating water is poor, and it is difficult to find the switching operation point

Solar energy is often turned on for energy saving, but solar energy is easily affected by the weather, has poor stability, and the heating capacity of hot water cannot be guaranteed

However, the heat pump and solar energy are turned on at the same time, or switched randomly, which cannot achieve sufficient energy-saving effect.

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