Jet type large temperature difference heat exchange method and device

Abstract

The invention discloses a jet type large temperature difference heat exchange method and device. The device structurally comprises an evaporator, jetting devices, a condenser and connecting pipelines. The device is divided into the left portion, the middle portion and the right portion, the upright multi-stage evaporator is arranged on the left portion, the upright multi-stage condenser is arranged on the right portion, and each steam jetting device is arranged between the corresponding stage of the evaporator and the corresponding stage of the condenser for connection; the jetting devices jet low-pressure water steam in the evaporator by means of high-temperature water, with certain pressure, coming from a heat supply pipe network, and a steam-water mixture with the medium pressure is formed and enters the condenser; the steam-water mixture entering the condenser heats heat supply circulating water, the steam is condensed and dissolved in the rest of water to form medium-temperature water, and the medium-temperature water flows out of a water outlet of the condenser and flows into the evaporator; and through stage-by-stage evaporation of several evaporation chambers from top to bottom, the medium-temperature water is cooled to form low-temperature water, and the low-temperature water is discharged out of a water discharging outlet in the bottom of the evaporator and flows back to a water return pipeline of the heat supply pipe network.

Description

technical field [0001] The invention relates to thermal technology, in particular to a spray-type large temperature difference heat exchange method and a spray-type large temperature difference heat exchange device. Background technique [0002] In recent years, with the continuous development of my country's urban construction, the contradiction between regional development and heating demand has become increasingly prominent. The urban area of ​​all cities is constantly expanding, the large-scale residential areas in the main urban area are constantly increasing, the area of ​​the old urban area is greatly increased every year, and the area of ​​the new urban area is also expanding. Judging from the current heat source and heating network heating capacity of the city, it is far from meeting the needs of the city's rapid development. If the heat supply cannot keep up, it will cause a bottleneck in urban development. [0003] In order to solve this contradiction concerning...

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Problems solved by technology

[0013] Aiming at newly building or renovating the old heating pipe network and solving the problem of insufficient heat supply generally existing in the heating pipe network, the present invention provides a method that can reduce the return water temperature of the heating network, thereby increasing the heat supply of the heating pipe network. Large temperature difference heat transfer method and large temperature difference heat transfer device

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