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Device for extracting heat from an effluent flowing in a duct, and heat exchanger for such a system

A technology for heat exchangers and heat exchange tubes, which is applied to heat exchanger fixing, heat exchange equipment, lighting and heating equipment, etc., and can solve problems such as complicated installation.

Inactive Publication Date: 2015-01-21
LYONNAISE DES EAUX FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The heat exchanger constitutes a device that is attached inside the pipe and immersed in the waste liquid; the installation is complicated by the hydraulic connections that should be forced to be sealed and by the shape of the heat exchanger components that should be adapted to the internal profile of the pipe, Even though these pipe sizes are large

Method used

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  • Device for extracting heat from an effluent flowing in a duct, and heat exchanger for such a system
  • Device for extracting heat from an effluent flowing in a duct, and heat exchanger for such a system
  • Device for extracting heat from an effluent flowing in a duct, and heat exchanger for such a system

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Embodiment Construction

[0029] refer to figure 1 , can be seen a device A for extracting heat from waste liquid 1 flowing in a pipe 2, in particular a sewage collection pipe. The device has heat exchange tubes 3 arranged in layers, placed in the inner and upper part of the pipe 2 , outside the flow area of ​​the waste liquid 1 . The pipe 3 is fastened to the area of ​​the inner wall of the pipe above the waste liquid, exposed to the atmosphere present in the pipe 2 . The pipe 3 is passed through by a heat transfer fluid to recover part of the latent and sensible heat of condensation of water vapor originating from the waste liquid.

[0030] The tubes 3 are oriented parallel to the longitudinal direction of the pipes, they are connected in parallel or in series to form a fluid circuit, generally with a heat pump.

[0031] The tube 3 may be smooth on the outside, or may have fins attached to increase the exchange area. The fins can be helical, longitudinal, transverse, especially in a plane orthogon...

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Abstract

Disclosed is a system for extracting heat from an effluent duct (2), in particular a wastewater collection device, comprising, in the zones of the inner duct wall located above the effluent, heat exchanger tubes (3) which are exposed to the atmosphere in the duct and through which a heat transfer fluid flows to recover some of the sensible heat and of the latent condensation heat from the steam generated by the effluent. A forced-convection device (9) is provided to generate a movement of air sweeping across the surface of the effluent (1) and increase the evaporation rate of the effluent.

Description

technical field [0001] The invention relates to a device for extracting heat from waste liquid flowing in pipes, in particular from sewage collection pipes. Background technique [0002] Sewage discharge pipes or collection pipes convey sewage, warm or mild, due to its origin in residential or tertiary industries, or its origin in communal or industrial activities: slaughterhouses, sports and leisure infrastructure, swimming pools, gymnasium etc. [0003] The sensible heat of these waters is an energy source that can advantageously be recovered and used in conjunction with heat pumps for building heating, sanitary hot water production or any other need for heat utilization. [0004] DE 19719311C5 discloses a heat exchanger which allows the method of extracting heat from waste liquids. The elements of the heat exchanger are immersed in the waste liquid and can be in the form of metal plates fitted to the bottom of the pipes or in the form of U-shaped metal profiles connecte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D21/00F28F13/00
CPCF28F2013/006F28F2275/02F28F13/00F28D21/0014F28D15/02F28F9/013F28D21/0012Y02B30/566F28F2250/08Y02B30/56F28D15/00F28D21/00
Inventor F·迪昂
Owner LYONNAISE DES EAUX FRANCE
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