Method for forecasting and controlling heat pump hot-water system dynamic energy conservation operation

Abstract

The invention relates to a prediction and control method for dynamic energy-saving operation of a heat pump hot water system, comprising (1) obtaining historical data of hot water water consumption of heat pump hot water units and historical number of water users from a historical database, and obtaining a time series of hot water water consumption per capita (2) Determine the form of the forecast model according to the obtained time series; (3) Establish the per capita hot water consumption forecast model; (4) According to the established forecast model, predict the future hot water consumption, and the data (5) The control module retrieves the basic information of the heat pump unit from the database and the current operating conditions of the unit, makes a decision on the start and stop time of the unit and the amount of water replenishment, and sends the decision result to the controller for execution. The invention provides guidance for the amount of heating water of the unit, avoids a large amount of hot water that is not used up in one day and causes a large amount of heat to be dissipated, resulting in waste, and improves economical efficiency. The invention can be widely used in units such as hotels, restaurants, schools and public bathrooms.

Description

technical field [0001] The invention relates to a prediction and control method for dynamic energy-saving operation of a heat pump hot water system, in particular to a method for hot water consumption prediction and unit heating control based on a combination of time series prediction and regression prediction methods. Background technique [0002] The heat pump hot water unit is a new type of hot water and heating heat pump product, and it is a heating equipment and hot water device that can replace the boiler. Compared with traditional solar energy, heat pump water heaters can not only absorb heat in the air, but also absorb solar energy. The heat pump hot water unit absorbs heat through the temperature difference of the refrigerant and compresses and heats the compressor, then exchanges heat with water, which greatly improves the thermal efficiency and makes full use of new energy. It is a new type that perfectly combines the respective advantages of electric water heater...

AI Technical Summary

Problems solved by technology

[0003] At present, in order to ensure that users have sufficient hot water to use, the amount of hot water heated by water heaters every day is greater than the actual water demand of users, so that a lot of hot water cannot be used up in a day, resulting in a large amount of heat dissipation, resulting in waste

Although the heat pump units produced by many manufacturers can realize low-peak electric heating to save heating costs, the amount of hot water to be heated is uncertain, and it is often heated according to the user's maximum water demand

At the same time, it should be considered that when the ambient temperature is low, if the hot water is heated in advance with off-peak electricity, and the water use time is generally concentrated in the evening, the hot water in the thermal water tank will have a large drop in temperature after a day of heat dissipation. Probably won't have the effect of saving heating costs

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