Solar heating system based on dissipation-reduction optimization and control system of solar heating system

Abstract

The invention provides a solar heating system based on dissipation-reduction optimization and a control system of the solar heating system. The solar heating system comprises a solar heat collector, a heat storing water tank, an indoor heat dissipater, a heat collecting circulating pump, a heat supply circulating pump, connecting pipelines, connecting valves, a digital temperature sensor, a flowmeter, a frequency converter and a controller. According to the solar heating system based on dissipation-reduction optimization and the control system of the solar heating system, optimized design is conducted on the integrated form, an operation mode and a control method of the links of solar heat collecting, heat storing, heat supplementing and heat supplying from the perspective of energy dissipation, and the common problems that the solar heating system conducts reverse heat transferring through the heat collector, control targets of supply and storage of the heat collecting volume cannot be coordinated, the heat of the heating side is transmitted reversely to the water tank, the control target of heat supply of the water tank cannot be coordinated, simultaneous operation of heat supplementing and heat storing cannot be achieved, and heat storing is ineffective in application of solar opto-thermal heating are solved. Meanwhile, the solar heating system based on dissipation-reduction optimization and the control system of the solar heating system can maximally utilize the passive heat storage characteristic of a building, the requirement for heat storing volume is reduced effectively, and the mixing loss in the heat storing water tank is effectively reduced.

Description

technical field [0001] The invention relates to a solar heating system and its control system based on the optimization of dissipation reduction, and belongs to the technical field of solar heating and heating. Background technique [0002] As a natural and non-polluting renewable energy, the use of solar energy in building heating will bring huge energy-saving and social benefits. However, the time distribution of solar energy has natural characteristics of instability and discontinuity. Solar energy resources are mainly concentrated in the time period of high solar radiation during the day, and this period of time usually has the least heating load of buildings; when the building has high heating heat at night When there is demand, the supply of solar energy is zero. Generally, solar thermal heating systems use hot water storage tanks to compensate for this mismatch between energy supply and demand, and connect the hot water storage tanks as a buffer between the solar hea...

AI Technical Summary

Problems solved by technology

In this process, the system needs to use the supplementary heat provided by the auxiliary heating device for heating. Due to the dissipation of solar energy in the hot water storage tank, this operation mode actually reduces the solar heat that can be effectively used for heating. Increased the system's demand for supplementary heat and reduced the solar energy guarantee rate of the system; ③ Ineffective heat storage - In the case of insufficient solar radiation in a single day and the thermal inertia of the water tank is large, if it is heated during the day, the water in the water tank will If the temperature of the medium still does not meet the heating conditions, the solar heat collected during the day cannot be used for building heating in time, and it will be lost to the environment through the water tank at night, resulting in a large amount of waste of collected heat.

Images