Heat supply systems and method based on coupling phase change

Abstract

The invention discloses heat supply systems and a heat supply method based on coupling phase change, and belongs to the field of civil heat supply. The heat supply systems comprise the civil heat supply system and the solar heating system. The heat supply systems comprise a first water circulation loop composed of a heat source, a thermal station and a heat user which are connected in sequence, the heat storage device comprises a box body, a partition plate is arranged in the middle of the box body and divides the interior of the box body into a first heat preservation area and a second heat preservation area, and the first heat preservation area and the second heat preservation area are each provided with an inlet end and an outlet end; The two ends of the first heat preservation area areconnected with a heating station and a heat source correspondingly. The two ends of the second heat preservation area are connected with the heating station and the heat source correspondingly. and the first heat preservation area, the heater and the second heat preservation area form a second water circulation loop. The high temperature of the second heat preservation area is kept through the second water circulation loop, and therefore it is guaranteed that water entering the thermal station is within the high temperature range. Phase-change heat storage and a solar heating system are combined, the characteristics of intermittency and instability of solar energy can be stabilized, the phase-change material can reach a phase-change area more quickly, and energy consumption is reduced.

Description

technical field

[0001] The invention belongs to the field of civil heat supply, and relates to a heat supply system and method based on coupled phase transitions. Background technique

[0002] At present, most of the residential heat supply adopts the method of direct supply throughout the day, but for the vast majority of heat users, they do not stay at home all day, and the uninterrupted heat supply when there is no one is bound to cause energy waste. The way is the development trend of heating. Heat metering is a heat supply operation method that measures and charges users according to the actual heat consumed by users. Heat users can adjust the heat supply according to their own needs, and charge for the actual heat consumption of heat users, which reduces the heat consumption costs of users and reduces system energy consumption. However, the heat metering method will cause problems for the operation of the heating network. The frequent opening and closing of valves b...

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