Method for decoupling operation of heat supply and heat storage in same heat source system,

Abstract

The invention discloses a method for decoupling operation of heat supply and heat storage in a same heat source system. The method for decoupling operation of heat supply and heat storage in the sameheat source system comprises the following steps that a design heat load of a heat supply side is estimated, circulating water quantity of the heat supply side is calculated, a system is started, a heat load of the heat supply side is calculated, a water supply temperature of the heat supply side is calculated, and a water supply temperature of a user side is adjusted. The method for decoupling operation of heat supply and heat storage in the same heat source system can effectively separate the influence between the heat supply side and a heat storage side in the same heat source system, on the one hand, the heat supply side realizes on-demand heat supply and stable operation, and on the other hand, the heat storage side can stably store heat at high temperature, so that the process of supplying while storing is simplified and efficient. The temperature adjustment process is a mixed flow process of adjusting the proportion of the heat source outlet water and the heat supply side returnwater, in the whole temperature adjustment process, the heat energy of the whole system is not lost, and the heating efficiency of a heat source is effectively improved. According to the method for decoupling operation of heat supply and heat storage in the same heat source system, a mass regulation mode is adopted in the he heat supply side to realize the balance of heat supply and heat demand.Simple management, convenient operation and stable network hydraulic conditions are achieved.

Description

technical field [0001] The invention belongs to the field of heat supply regulation methods, and in particular relates to a decoupled operation method for heat supply and heat storage of a heat source system. Background technique [0002] In the heat supply and heat storage process of the same heat source system, it should be able to meet the needs of heat supply and high-efficiency heat storage at the same time. In order to realize on-demand heating, when the user's heat load changes, it is necessary to adjust the flow rate and water supply temperature of the heating system. The purpose of heat supply adjustment is to adapt the heat dissipation of the heating user's cooling equipment to the changing law of the user's heat load, so as to prevent the heating user from having a room temperature that is too high or too low. [0003] In the water heat storage system, the heat storage medium—water is first heated and stored in the heat storage tank. In order to make full use of...

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Problems solved by technology

However, in the heat supply and heat storage system with the same heat source, it is necessary to store heat in the water tank while supplying heat to users. Under the influence of different outdoor temperatures, the required water supply temperature is different. Since the water is discharged from the same heat source, it will directly affect the water inlet temperature of the water tank, thereby reducing the heat storage efficiency of the water tank, and it is even difficult to reach the maximum heat storage temperature; The adjustment method of regulation, the heat storage side can ensure high-temperature heat storage, but the heat supply side will cause changes in the circulating water flow in the system due to changes in heat load, which may affect the user's indoor temperature and even cause hydraulic imbalance.

[0004] In order to solve the problems caused by the single adjustment method, at present, the operation method of adjusting the speed of the water pump or adjusting the power of the boiler is often used in China to obtain the simultaneous change of flow and temperature. However, this operation method involves too many variables and cannot accurately control all The demand variable seriously affects the stability of the system, leading to an increase in operating energy consumption, and even affects the regulation performance of the heating system

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