WO2016094971A1 - Installation de récupération de la chaleur d'eaux de drainage chaudes du type échangeur thermique vertical - Google Patents

Installation de récupération de la chaleur d'eaux de drainage chaudes du type échangeur thermique vertical Download PDF

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Publication number
WO2016094971A1
WO2016094971A1 PCT/BG2015/000008 BG2015000008W WO2016094971A1 WO 2016094971 A1 WO2016094971 A1 WO 2016094971A1 BG 2015000008 W BG2015000008 W BG 2015000008W WO 2016094971 A1 WO2016094971 A1 WO 2016094971A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
drain water
heat exchanger
hot drain
heat recovery
Prior art date
Application number
PCT/BG2015/000008
Other languages
English (en)
Inventor
Stoyan Asenov GASHAROV
Original Assignee
Intel Energy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Energy filed Critical Intel Energy
Publication of WO2016094971A1 publication Critical patent/WO2016094971A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/424—Means comprising outside portions integral with inside portions
    • F28F1/426—Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/06—Heat exchange conduits having walls comprising obliquely extending corrugations, e.g. in the form of threads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the invention relates to a vertical heat exchanger for hot drain water heat recovery and it will be applicable in residential and industrial buildings for heating and hot water delivery for daily needs.
  • An installation which comprises a water tank to collect the hot drain water, and a heat exchange tube system is disposed in this water tank with clean cold water flowing therein.
  • a part of the drain water heat is absorbed by the cold water, and the already heated water is delivered for additional heating or for other direct consumption.
  • the said installations are quite voluminous and require an additional space at the low levels of the building, as well as a co-ordination with the authorities for sanitary supervision
  • a gravitational type heat exchanger which includes a wide copper tube with multiple coils of thinner copper tubes, wrapped together around it.
  • the hot drain water is going down the wide tube, and the clean cold water is moving up the thin tube coils in the opposite direction, while owing to the heat transfer it is heated and joints another hot water circuit. In this manner a part of the drain water heat is recovered and utilized.
  • the aim of the present invention is to create a hot drain water heat recovery installation, which is compact, reasonably priced compared with the existing price level, and ensuring at the same time a higher efficiency.
  • the hot drain water heat recovery installation is a vertical heat exchanger (VHE) type, and it consists of an outer tube, an inner tube, an inlet tube and an outlet tube, which are interconnected.
  • the outer tube is a thick-walled pressure tube, which the inlet tube and the outlet tube are connected to, while the inner tube is arranged centrally in the outer tube, and a closed water-proof space is isolated between the two tubes.
  • the circumferential inner tube surface is copper, double-walled, heat welded, and a coil ribbing of copper or aluminum material is formed thereon, located within the free space between the tubes.
  • the hot drain water heat recovery installation of vertical heat exchanger (VHE) type has a corrugated inner tube with a deviation from the vertical axis up to 1 ,5 mm and a clearance of 300 mm between its widest and its thinnest section.
  • FIG. 1 An exemplary embodiment of the invention is shown in the enclosed figure 1, which only explains the invention, but doesn't limit it, and represents a cross-section of the system.
  • the hot drain water heat recovery installation of vertical heat exchanger type includes the interconnected outer tube 1 , inner tube 2, supporting, fixing and sealing section 3, inlet tube 4 and outlet tube 5.
  • the outer tube 1 is a thick-walled pressure tube, which the inlet tube 4 and the outlet tube 5 are connected to.
  • the inner tube 2 is arranged centrally in the outer tube 1 , and a closed water-proof space 6 is isolated between the tubes 1 and 2.
  • the inner tube 2 is copper, double-walled, and a coil ribbing 7 of copper or aluminum material is formed around it, located within the free space 6 between the tubes.
  • the double-walled tube 1 is built of two coaxially arranged, tightly heat welded into each other copper tubes, with a very good heat contact between them.
  • the double-walled tube 1 is stepless corrugated additionally, with a deviation from the vertical axis up to 1,5 mm and a clearance of 30 cm between its widest and its thinnest section.
  • VHE vertical heat exchanger
  • the hot drain water from industry or home such as from shower, bath tub, sinks and wash hand basins, washing machines and dish-washers, etc. flow out into the drainage, and from there into the wide copper tube 1 , section 8.
  • the principles of the fluid dynamics indicate, that the downward vertical laminar water flow in the copper tube 1 happens on its inner walls, forming a thin flowing layer. Clean cold water is coming from the inlet tube 4 into the free space 6 between the two coaxial tubes 1 and 2, and it is moving up in the opposite direction against the hot drain water flow in the inner tube 1. Heat exchange is effected between the clean cold water in the free space 6 and the hot drain water in the inner tube 1 through the walls of the copper tube 1 , because the copper is a material, possessing one of the highest coefficient of thermal conductivity.
  • the hot drain water is cooled, transferring its heat to the clean cold water, which warms up.
  • the already heated clean water is going out through the tube 5 and is directed to a subscriber station, to another boiler for additional heating, or for direct consumption.
  • This is a self-regulating process, because a constant hydraulic pressure is maintained in the hot water installation and the volume of the incoming clean cold water is equal to the volume of the utilized hot water.
  • the ribbing 7 around the inner tube 1 is wrapped as a coil or separate segments in order to create cold water flow turbulence in the free space 6 between the tubes, with the objective to enhance the heat exchange between cold and hot water.
  • the group of connecting elements 3 represents the connection between the inner and the outer tubes 1 and 2, and ensures the water seal.
  • the inlet cold water tube 4 and the heated water tube 5 can be arranged by pairs for better streamlining of tube 1 within the free space 6 between the tubes.
  • the heat exchange efficiency of the VHE operation is maximal in case of vertical arrangement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

(54) Installation de récupération de la chaleur d'eaux de drainage chaudes (54), du type échangeur thermique vertical (VHE). (57) L'invention concerne une installation de récupération de la chaleur d'eaux de drainage chaudes du type échangeur thermique vertical (VHE), comprenant un tube extérieur, un tube intérieur, un tube d'admission, un tube de sortie, raccordés entre eux, et caractérisée en ce que le tube extérieur (1) est un tube de pression à paroi épaisse, auquel sont raccordés le tube d'admission et le tube de sortie (4 et 5), en ce que le tube intérieur (2) est disposé centralement dans le tube extérieur (1), un espace étanche fermé (6) étant isolé entre les tubes (1) et (2), et en ce que des nervures de bobine (7) en matériau de cuivre ou d'aluminium, agencées dans l'espace libre (6) entre les tubes, sont formées sur la surface circonférentielle du tube intérieur (2), qui est en cuivre, à double paroi et thermosoudé.
PCT/BG2015/000008 2014-12-15 2015-04-03 Installation de récupération de la chaleur d'eaux de drainage chaudes du type échangeur thermique vertical WO2016094971A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG111881 2014-12-15
BG11188114 2014-12-15

Publications (1)

Publication Number Publication Date
WO2016094971A1 true WO2016094971A1 (fr) 2016-06-23

Family

ID=53298060

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BG2015/000008 WO2016094971A1 (fr) 2014-12-15 2015-04-03 Installation de récupération de la chaleur d'eaux de drainage chaudes du type échangeur thermique vertical

Country Status (1)

Country Link
WO (1) WO2016094971A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107449309A (zh) * 2017-07-31 2017-12-08 西安交通大学 一种用于二氧化碳热泵的蜂窝式气体冷却器
RU178987U1 (ru) * 2017-06-19 2018-04-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Мурманский государственный технический университет" (ФГБОУ ВО "МГТУ") Система утилизации тепла сточных вод
RU191594U1 (ru) * 2019-05-14 2019-08-13 Акционерное Общество "Научно-Исследовательский Институт "Гермес" Теплообменник блока рекуперации
US11668529B2 (en) 2018-04-24 2023-06-06 Giovanni MANENTI Double-tube heat exchanger and manufacturing method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301745A (en) 1991-08-14 1994-04-12 Klaus Seib Installation for heat recovery
BG952U1 (bg) 2007-01-22 2007-11-30 Стоян ГАШАРОВ Съоръжение за оползотворяване на топлината от отпадъчните води
DE102009014936A1 (de) * 2009-03-30 2010-10-07 Georg Zimmermann Abwasserrohr mit einer Frischwasserleiteinrichtung sowie Wärmeübertrager
WO2010140138A2 (fr) * 2009-06-04 2010-12-09 Garcia Melico Jose Alberto Système de récupération de chaleur et son thermosiphon
DE102011103630A1 (de) * 2011-06-08 2012-12-13 Heinz-Dieter Hombücher Vorrichtung zur Wärmerückgewinnung aus Brauch- oder Abwasser
US20120318483A1 (en) * 2011-06-14 2012-12-20 David Cosby Heat Exchanger for Drain Heat Recovery
GB2510794A (en) * 2012-07-25 2014-08-20 Bohdan Majchrowski Heat recovery systems

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301745A (en) 1991-08-14 1994-04-12 Klaus Seib Installation for heat recovery
BG952U1 (bg) 2007-01-22 2007-11-30 Стоян ГАШАРОВ Съоръжение за оползотворяване на топлината от отпадъчните води
DE102009014936A1 (de) * 2009-03-30 2010-10-07 Georg Zimmermann Abwasserrohr mit einer Frischwasserleiteinrichtung sowie Wärmeübertrager
WO2010140138A2 (fr) * 2009-06-04 2010-12-09 Garcia Melico Jose Alberto Système de récupération de chaleur et son thermosiphon
DE102011103630A1 (de) * 2011-06-08 2012-12-13 Heinz-Dieter Hombücher Vorrichtung zur Wärmerückgewinnung aus Brauch- oder Abwasser
US20120318483A1 (en) * 2011-06-14 2012-12-20 David Cosby Heat Exchanger for Drain Heat Recovery
GB2510794A (en) * 2012-07-25 2014-08-20 Bohdan Majchrowski Heat recovery systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU178987U1 (ru) * 2017-06-19 2018-04-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Мурманский государственный технический университет" (ФГБОУ ВО "МГТУ") Система утилизации тепла сточных вод
CN107449309A (zh) * 2017-07-31 2017-12-08 西安交通大学 一种用于二氧化碳热泵的蜂窝式气体冷却器
US11668529B2 (en) 2018-04-24 2023-06-06 Giovanni MANENTI Double-tube heat exchanger and manufacturing method thereof
RU191594U1 (ru) * 2019-05-14 2019-08-13 Акционерное Общество "Научно-Исследовательский Институт "Гермес" Теплообменник блока рекуперации

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