Sewage water source heat exchanger

A technology for heat exchangers and sewage, which can be applied to the types of heat exchangers, indirect heat exchangers, lighting and heating equipment, etc. It can solve the problems of small shell-side flow channels, difficult maintenance, and clogging of debris.

Active Publication Date: 2011-08-03
BEIJING DRAINAGE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The heat exchanger in patent document 1 has a small shell-side flow channel, which is easy to cause blockage and entanglement of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, a sewage water source heat exchanger includes a shell 1 and a heat exchange tube 2. Relative to the central axis of the shell, the heat exchange tube 2 is spirally wound and distributed tightly against the inner wall of the shell 1. One end of the shell 1 is provided with a sewage inlet 5 and an intermediate medium outlet 4, and the other end of the shell 2 is provided with a sewage outlet 6 and an intermediate medium inlet 3. The sewage inlet and outlet pass through the entire shell 1; the heat exchange tube 2 passes through the shell wall with the intermediate medium The inlet and outlet are located at both ends of the shell.

[0021] The shell 1 is one or a group of metal (steel pipe) or non-metal (glass reinforced plastic or other plastics such as PVC, PE and other materials) pipes. The spiral heat exchange tube 2 close to the inner wall of the shell 1 is a group of metal tubes (the material can be copper, copper alloy, stainless steel, etc.)...

Embodiment 2

[0024] Such as figure 2 , image 3 As shown, a sewage water source heat exchanger includes a shell 1 and a heat exchange tube 2. Relative to the central axis of the shell, a plurality of heat exchange tubes 2 are distributed in parallel and close to the inner wall of the shell 1, and the two ends of the shell are separately provided One head 7 is connected with each heat exchange tube. One end of the shell 1 is provided with a sewage inlet 5 and an intermediate medium outlet 4 (on one head 7), and the other end of the shell 2 is provided with a sewage outlet 6 and an intermediate medium inlet 3 (on the other head 7). It passes through the entire shell 1; the intermediate medium inlet and outlet of the head 7 are located on the same side of the shell wall and perpendicular to the central axis of the shell 1.

[0025] The shell 1 is one or a group of metal (steel pipe) or non-metal (glass reinforced plastic or other plastics such as PVC, PE and other materials) pipes. The spiral ...

Embodiment 3

[0028] Such as Figure 4 As shown, the heat exchangers of the above embodiments 1 and 2 can be used in the following manner. According to the needs of sewage heat exchange, design the number of heat exchangers and the way of series and parallel connection, Figure 4 It means that 4 heat exchangers are connected in series as a group, in which the sewage channel is connected in series and the intermediate medium (softened water) channel is connected in parallel. Of course, the number of heat exchangers in series is set according to the actual water quality and water treatment capacity, not limited to Figure 4 The combination shown.

[0029] In the operation experiment of a group of small sewage heat pump units in Beijing Gaobeidian Sewage Treatment Plant, 8 figure 1 The heat exchangers shown are connected in series, in which the sewage channels are connected in series and the intermediate medium (softened water) channels are connected in parallel. The designed pumping water flow ra...

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Abstract

The invention discloses a sewage water source heat exchanger, which comprises a shell and a heat exchanging tube. The heat exchanging tube is arranged in the shell and attached to the inner wall of the shell tightly. The heat exchanging tube is distributed in a spirally winding manner or parallel manner relative to a central axis of the shell. A sewage flow passage (namely a shell pass) of the sewage water source heat exchanger is free of the obstruction by the heat exchanging tube, so the space is quite wide, solid impurities in the sewage (such as the plastic wrapping materials, rubbish from cooling, hair and the like) are convenient to pass, and the defects such as blockage, winding and the like are prevented. Meanwhile, since the heat exchanging tube is attached to the inside of the shell tightly, so more heat exchanging tubes can be arranged, a maximum heat exchanging area is guaranteed, and the heat exchanging efficiency is high.

Description

Technical field [0001] The invention relates to a heat exchanger, which is mainly used for heat exchange of sewage water sources. Background technique [0002] The sewage water source heat exchanger can use the low-grade heat energy of the sewage to turn it into higher-grade heat energy, heating buildings or heating other systems, and can also be used for cooling. Compared with other energy sources, it is a green form of renewable energy utilization. In the context of increasingly scarce energy and widespread attention to energy-saving and environmentally-friendly products, the development of water source heat pumps, especially sewage source heat pumps, in accordance with local conditions will have good economic and social environmental benefits. Therefore, the sewage source heat pump system has a good development momentum at home and abroad. [0003] Untreated sewage, simply treated sewage, and some surface waters may be mixed with solid floating matter, suspended matter, aquati...

Claims

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Application Information

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IPC IPC(8): F28D7/00
Inventor 张大力谭乃秦陆学兴崔洪英
Owner BEIJING DRAINAGE EQUIP
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