ITMI20031826A1 - HEAT EXCHANGER AND PERFECT STRUCTURE. - Google Patents

HEAT EXCHANGER AND PERFECT STRUCTURE.

Info

Publication number
ITMI20031826A1
ITMI20031826A1 IT001826A ITMI20031826A ITMI20031826A1 IT MI20031826 A1 ITMI20031826 A1 IT MI20031826A1 IT 001826 A IT001826 A IT 001826A IT MI20031826 A ITMI20031826 A IT MI20031826A IT MI20031826 A1 ITMI20031826 A1 IT MI20031826A1
Authority
IT
Italy
Prior art keywords
tube
nest
tubes
bypass
traversed
Prior art date
Application number
IT001826A
Other languages
Italian (it)
Inventor
Adamo Gaetano Galatello
Pierluigi Ricci
Luca Zanardi
Original Assignee
Olmi Spa
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 Olmi Spa filed Critical Olmi Spa
Priority to IT001826A priority Critical patent/ITMI20031826A1/en
Priority to EP04022410A priority patent/EP1519134A3/en
Publication of ITMI20031826A1 publication Critical patent/ITMI20031826A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/087—Heat exchange elements made from metals or metal alloys from nickel or nickel alloys
    • 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
    • F28D7/16—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 in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2270/00—Thermal insulation; Thermal decoupling

Landscapes

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

Abstract

A tube-nest heat exchanger with bypass for process fluid output temperature control comprises a chamber (14) traversed by an exchange fluid and closed at opposite ends by a pair of tube plates (12,13) with a tube nest (11) between them. The tube-nest tubes are traversed by the process fluid and are in contact externally with the exchange fluid in the chamber. Between the tube plates (12,13) is at least one bypass tube (17) made up of an external shell (18) in contact with the exchange fluid and a thermally insulating layer (19) on the inner wall to surround an internal passage (20) traversed by the process fluid. The material of the external shell of the bypass tube and the material of the tube-nest tubes are mutually different and chosen with different thermal expansion coefficients such that the functions ”L t (T) and ”L b (T) of the lengthening starting from the length under assembly conditions as a function of temperature and respectively of the tube-nest tubes and the bypass tube shell identify at said respective mean operating temperatures T et and T eb , values ”L t (T et ) and ”L b (T eb ) such that |1-”L t (T et )/”L b (T eb )|<=0.15. This produces reduced stress on the welds between tubes and tube plates and allows realization of more economical and stronger exchangers.
IT001826A 2003-09-24 2003-09-24 HEAT EXCHANGER AND PERFECT STRUCTURE. ITMI20031826A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT001826A ITMI20031826A1 (en) 2003-09-24 2003-09-24 HEAT EXCHANGER AND PERFECT STRUCTURE.
EP04022410A EP1519134A3 (en) 2003-09-24 2004-09-21 Heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001826A ITMI20031826A1 (en) 2003-09-24 2003-09-24 HEAT EXCHANGER AND PERFECT STRUCTURE.

Publications (1)

Publication Number Publication Date
ITMI20031826A1 true ITMI20031826A1 (en) 2005-03-25

Family

ID=34179332

Family Applications (1)

Application Number Title Priority Date Filing Date
IT001826A ITMI20031826A1 (en) 2003-09-24 2003-09-24 HEAT EXCHANGER AND PERFECT STRUCTURE.

Country Status (2)

Country Link
EP (1) EP1519134A3 (en)
IT (1) ITMI20031826A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048592A1 (en) * 2009-10-07 2011-04-14 Lurgi Gmbh Waste heat recovery boiler has multiple heat transfer tubes and bypass tube inside cylindrical outer cover, where heat transfer tubes and bypass tube have inlet end and outlet end
CN102338572A (en) * 2010-07-26 2012-02-01 济南西斯普换热***有限公司 Sterile dual-tubeplate shell-and-tube heat exchanger
CN103471432B (en) * 2013-09-26 2015-11-18 上海锅炉厂有限公司 One has the board-like fixed tube-sheet exchanger of temperature controlling function double helix
CN103486881B (en) * 2013-09-26 2015-07-15 上海锅炉厂有限公司 Temperature-controllable floating head heat exchanger with double-helix baffling plates
CN103471431A (en) * 2013-09-26 2013-12-25 上海锅炉厂有限公司 Fixed tube-sheet heat exchanger with temperature control function
DE102014222158A1 (en) * 2014-10-30 2016-05-04 Mahle International Gmbh Exhaust gas heat exchanger
CN105202949A (en) * 2015-10-15 2015-12-30 上海锅炉厂有限公司 Controllable-temperature self-cooling protection high-temperature U-tube evaporator
EP3407001A1 (en) 2017-05-26 2018-11-28 ALFA LAVAL OLMI S.p.A. Shell-and-tube equipment with bypass
CN110332829B (en) * 2019-04-03 2020-07-31 新乡北新建材有限公司 Novel heat exchanger structure of gypsum board

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091003A (en) * 1936-03-14 1937-08-24 J P Devine Mfg Co Inc Heat exchange apparatus
GB758030A (en) * 1953-02-20 1956-09-26 Exxon Research Engineering Co Improvements in or relating to tubular heat exchangers
DE1625936C3 (en) * 1967-09-29 1978-04-06 Benteler-Werke Ag Werk Neuhaus, 4794 Schloss Neuhaus Metal conduit pipe that can be deformed by bending for heating systems and water installations, in particular hot water pipes
DE2846455C2 (en) * 1978-10-23 1980-07-31 Borsig Gmbh, 1000 Berlin Shell and tube heat exchanger with a constant outlet temperature of one of the two media
WO2002052142A1 (en) * 2000-12-19 2002-07-04 Valeo Termico Sa Heat-exchanger module, specially designed for an exhaust gas recycling system
DE10142539A1 (en) * 2001-08-30 2003-03-20 Behr Gmbh & Co Exhaust gas heat exchanger
DE10203003B4 (en) * 2002-01-26 2007-03-15 Behr Gmbh & Co. Kg Exhaust gas heat exchanger

Also Published As

Publication number Publication date
EP1519134A3 (en) 2008-02-20
EP1519134A2 (en) 2005-03-30

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