US3443633A - Temperature compensated air-cooled steam condenser - Google Patents

Temperature compensated air-cooled steam condenser Download PDF

Info

Publication number
US3443633A
US3443633A US627157A US3443633DA US3443633A US 3443633 A US3443633 A US 3443633A US 627157 A US627157 A US 627157A US 3443633D A US3443633D A US 3443633DA US 3443633 A US3443633 A US 3443633A
Authority
US
United States
Prior art keywords
air
condenser
circuit
steam
fan
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US627157A
Other languages
English (en)
Inventor
Theodore C Carnavos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US3443633A publication Critical patent/US3443633A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/90—Cooling towers

Definitions

  • This invention is related to steam condensers of the aircooled type. More particularly, it relates to an air-cooled steam condenser having provision for the prevention of freezing during sub-zero operation and for the removal of ice prior to startup.
  • Direct air-cooled steam condensers are known to the prior art and are used in areas where water is not readily available.
  • the atmospheric or ambient air is the cooling medium which passes over and around the condenser tubes which contain the steam and condensate.
  • a typical prior art air-cooled steam condenser includes a turbine steam exhaust pipe 2 terminating in a steam header 4 which in turn leads through a plurality of condenser tubes 6 to a condensate header 8 disposed somewhat below steam header 4 for the purpose of gravity drain of the condensate. Condensate from header 8 is led back to the steam system by means not shown. Condenser tubes 6 are disposed in the path, defined by conduit 10, of coolant air which is motivated therethrough by means of a fan 12. Fan 12 receives air from the outside ambient air through a protective louver 14 and discharges through a gravity shutter 16 into the path defined by conduit and over the condenser tubes 6.
  • an object of the present invention to provide an air-cooled steam condenser having a modification for the prevention of freezing during operation.
  • Another object is to provide an air cooled steam condenser with means to eliminate ice which may have formed during a shutdown period.
  • an air cooled steam condenser having, in addition to the primary air flow circuit, a secondary air flow circuit recirculating the cooling air from the condenser tubes back to the fan suction. Dampers in the primary and secondary air flow circuits regulate the proportion of fan discharge air that circulates in each circuit.
  • the suction side of the air fan is communicable with a source of heat to introduce the same to the condenser if it becomes desirable to melt ice.
  • the secondary or re- 3,443,633 Patented May 13, 1969 'ice circulation air circuit provides warmer air for the condenser in the event that the outside ambient air is too cold.
  • a turbine exhaust pipe 22 is shown leading into a steam header 24 which in turn leads through a plurality of condenser tubes 26 to a condensate header 28, located below steam header 4 for purposes of gravity condensate flow.
  • Condenser tubes 26 are disposed in the path or circuit of cooling air defined between walls or conduits 30. Air is motivated through the cooling circuit by a motor operated fan 32 which receives air from two diiferent sources alternatively or in combination, as hereinafter described, and discharges it through gravity shutter 36 over the condenser tubes 26.
  • a motor operated fan 32 which receives air from two diiferent sources alternatively or in combination, as hereinafter described, and discharges it through gravity shutter 36 over the condenser tubes 26.
  • Forming a part of wall 30 and located on the downstream side thereof from condenser tubes 26 is an adjustable damper or louver 38.
  • a recirculation adjustable damper or louver 40 may be located downstream of the condenser tubes 26 and adjacent the louver 38.
  • an adjustable intake louver 34 provides air passages from the outside to the fan.
  • an adjustable recirculation louver 42 is mounted in series with recirculation louver 40. The series passages provided by louvers 40 and 42, and shown by dotted arrows, will be designated the secondary or recirculation air circuit, and is shown at B on the drawing.
  • a conduit 44 which communicates with a heat source, not shown, is introduced to the condenser so as to communicate with the suction side of fan 32.
  • Conduit 44 has a shutofi valve 46 therein.
  • Conduit 44 may be introduced at the recirculation circuit B as shown, or it may be introduced directly into the intake side of the primary air circuit.
  • the aforementioned heat source might be any suitable supply of heated air or gas. Typically, it might be the exhaust from a gas turbine used in conjunction with a steam turbine for which the present condenser is furnished in a combined steam-gas cycle.
  • Dampers or louvers 34, 38, 40 and 42 are adjustable between their closed and open positions and may be operated by hand or a suitable automatic control.
  • Shutter 36 is gravity-operated so that when fan 32 is not running, shutter 36 is closed to prevent backflow of air.
  • secondary or recirculating air circuit B is isolated. That is, louvers 40 and 42 are closed and shutolf valve 46 is closed. While an operating turbine is exhausting steam through its exhaust pipe 22, fan 32 is circulating outside ambient air through open louver 34 and through primary air circuit A over the condenser tubes 26 and out through open exhaust louver 38.
  • the fan discharge flows partially through louver 38 and partially through louver 40 into recirculation circuit B.
  • fan discharge air as it passes over condenser tubes 26 is warmed and therefore, air circulating through circuit B and back to the fan suction is warmer than outside ambient air.
  • the degree of opening of louvers 34 and 38 and of louvers 40 and 42 in the recirculation circuit the temperature of air discharging from fan 32 over the condenser tubes can be regulated so as to be kept as cool as possible and yet kept above the point where condensate freezing occurs.
  • louvers 34 and 38 can be either partially or fully closed with louvers 40 and 42 open.
  • Valve 46 is open permitting the flow therethrough of warmed fluid from the heat source through conduit 44.
  • Fan 32 motivates such warmed fluid around the circuit over the condenser tubes and through recirculation circuit B until the system is completely thawed and ready for operation.
  • the air-cooled steam condenser of the present invention has provided a means to facilitate the restarting of an air-cooled steam condenser after shutdown in cold weather.
  • An air-cooled steam condenser including steam condensing tubes disposed within a primary air flow circuit, said circuit communicating at its intake and exhaust ends with the atmosphere, and blower means to motivate air through said circuit, said condenser being characterized by the improvement comprising:
  • first adjustable damper means to throttle the air flow from the atmosphere into said circuit
  • a recirculation circuit communicating with said primary circuit on the intake side of said air motivating means and on the downstream side of said steam condensing tubes, and
  • third adjustable damper means to regulate the air flow through said recirculation circuit to keep air flow around said condensing tubes substantially constant
  • said improvement being operative to eifect steam condensation and to prevent freezing of the resulting condensate in said tubes, and
  • said means to selectively increase the thermal energy of air circulating over said condensing tubes, said means comprising a conduit communicating with a source of heated fluid at a higher temperature than the steam in said condensing tubes and connected to the intake side of said blower means.
  • An air-cooled steam condenser including steam condensing tubes disposed within the flow path of a primary air flow circuit
  • said circuit communicating at its intake and exhaust ends with the atmosphere, and a fan to motivate air through said circuit, said condenser being characterized by the improvement comprising:
  • a recirculation air flow circuit communicating with said primary circuit on the intake side of said fan and on the downstream side of said steam condensing tubes,
  • said improvement being operative to effect steam condensation and to prevent freezing of the resulting condensate in said tubes
  • said last-named means comprising a conduit communicating with a source of heated fluid at a higher temperature than the steam in said condensing tubes and connected to said recirculation circuit, and means to open and close said conduit to control the flow of said heated fluid into said recirculation circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Air Conditioning Control Device (AREA)
US627157A 1967-03-30 1967-03-30 Temperature compensated air-cooled steam condenser Expired - Lifetime US3443633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62715767A 1967-03-30 1967-03-30

Publications (1)

Publication Number Publication Date
US3443633A true US3443633A (en) 1969-05-13

Family

ID=24513435

Family Applications (1)

Application Number Title Priority Date Filing Date
US627157A Expired - Lifetime US3443633A (en) 1967-03-30 1967-03-30 Temperature compensated air-cooled steam condenser

Country Status (5)

Country Link
US (1) US3443633A (fr)
CH (1) CH485187A (fr)
DE (1) DE1751052A1 (fr)
FR (1) FR1558198A (fr)
GB (1) GB1178642A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450899A (en) * 1980-10-27 1984-05-29 Flakt Aktiebolag Method of regulating an outdoor steam condensor and apparatus for performing said method
US4539898A (en) * 1983-08-08 1985-09-10 Alpaire, Inc. Semiautomatic food frying apparatus
WO1986000393A1 (fr) * 1984-06-21 1986-01-16 Klaas Visser Installation de refrigeration
US4852471A (en) * 1987-11-10 1989-08-01 Jvj Enterprises, Inc. Semiautomatic frying machine and air filter apparatus therefor
US5129456A (en) * 1987-05-08 1992-07-14 Energiagazdalkodasi Intezet Dry-operated chimney cooling tower
US5301652A (en) * 1991-07-31 1994-04-12 Cleveland Range, Inc. Condensing apparatus for steam cooking device
US20100301034A1 (en) * 2008-01-28 2010-12-02 Duke Manufacturing Co. Convection oven
RU2610972C1 (ru) * 2015-11-26 2017-02-17 Общество с ограниченной ответственностью Научно-производственное объединение "Спецнефтехиммаш" Камера распределительная продукта аппаратов воздушного охлаждения с трубчатой внутренней полостью и прямоугольной наружной геометрией

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006412A1 (fr) * 1978-07-03 1980-01-09 Hamon-Sobelco S.A. Réfrigérant atmosphérique à échangeur sec
SE445138B (sv) * 1981-03-20 1986-06-02 Wirsbo Bruks Ab Anordning for vermevexling mellan tva medier for kondensering av anga
HU193135B (en) * 1985-10-24 1987-08-28 Energiagazdalkodasi Intezet Auxiliary plant for operating air-cooled equipments particularly preventing winter injuries and air-cooled cooling tower provided with such auxiliary plant
FI106223B (fi) * 1996-06-07 2000-12-15 Valmet Corp Lämmönvaihdin

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1563963A (en) * 1925-07-10 1925-12-01 Byrd Hugh Linley Drying and heating apparatus
US1564566A (en) * 1924-02-18 1925-12-08 Ind Dryer Corp Art of drying materials
US2247987A (en) * 1931-05-21 1941-07-01 Clifford C Carson Apparatus for heating and ventilating
US2665840A (en) * 1949-09-01 1954-01-12 Combustion Eng Fan with adjustable inlet for secondary air

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1564566A (en) * 1924-02-18 1925-12-08 Ind Dryer Corp Art of drying materials
US1563963A (en) * 1925-07-10 1925-12-01 Byrd Hugh Linley Drying and heating apparatus
US2247987A (en) * 1931-05-21 1941-07-01 Clifford C Carson Apparatus for heating and ventilating
US2665840A (en) * 1949-09-01 1954-01-12 Combustion Eng Fan with adjustable inlet for secondary air

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450899A (en) * 1980-10-27 1984-05-29 Flakt Aktiebolag Method of regulating an outdoor steam condensor and apparatus for performing said method
US4539898A (en) * 1983-08-08 1985-09-10 Alpaire, Inc. Semiautomatic food frying apparatus
WO1986000393A1 (fr) * 1984-06-21 1986-01-16 Klaas Visser Installation de refrigeration
US5129456A (en) * 1987-05-08 1992-07-14 Energiagazdalkodasi Intezet Dry-operated chimney cooling tower
US4852471A (en) * 1987-11-10 1989-08-01 Jvj Enterprises, Inc. Semiautomatic frying machine and air filter apparatus therefor
US5301652A (en) * 1991-07-31 1994-04-12 Cleveland Range, Inc. Condensing apparatus for steam cooking device
US20100301034A1 (en) * 2008-01-28 2010-12-02 Duke Manufacturing Co. Convection oven
US8378265B2 (en) 2008-01-28 2013-02-19 Duke Manufacturing Co. Convection oven
US8735778B2 (en) 2008-01-28 2014-05-27 Duke Manufacturing Co. Convection oven
US9074776B2 (en) 2008-01-28 2015-07-07 Duke Manufacturing Co. Convection oven
US9903598B2 (en) 2008-01-28 2018-02-27 Duke Manufacturing Co. Convection oven
RU2610972C1 (ru) * 2015-11-26 2017-02-17 Общество с ограниченной ответственностью Научно-производственное объединение "Спецнефтехиммаш" Камера распределительная продукта аппаратов воздушного охлаждения с трубчатой внутренней полостью и прямоугольной наружной геометрией

Also Published As

Publication number Publication date
GB1178642A (en) 1970-01-21
DE1751052A1 (de) 1971-03-04
CH485187A (de) 1970-01-31
FR1558198A (fr) 1969-02-21

Similar Documents

Publication Publication Date Title
US3443633A (en) Temperature compensated air-cooled steam condenser
SU1755716A3 (ru) Система охлаждени конденсатора паротурбинных установок
SU976862A3 (ru) Установка дл передачи тепла и влаги
US5535944A (en) Combined heat and power system
GB999418A (en) Method and apparatus for refrigerating
GB1284163A (en) Improvements in or relating to air cooled heat exchangers
US2959036A (en) R mehalick
CN112234803A (zh) 变频器、制冷系统及其控制方法
US4792091A (en) Method and apparatus for heating a large building
US2318858A (en) Refrigerating apparatus
GB2082317A (en) Temperature control apparatus
US3286765A (en) Method and apparatus for airconditioning a vehicle
FI60604C (fi) Saett och anlaeggning foer uppvaermning genom vaermepumpning
KR20060108465A (ko) 개착식 전력구 냉각 시스템
JPH04163230A (ja) 冷却装置
SE8404617D0 (sv) System for att forhindra isbildning av turbin
CA1081978A (fr) Methode et dispositif visant a ameliorer le rendement d'un generateur de chaleur
JP2005069553A (ja) 水熱源熱回収空調システム
SU1706404A3 (ru) Суха градирн
JPS6051016B2 (ja) 放熱装置としても使用可能な自然熱吸熱装置
US3235000A (en) Air conditioner
JPH04222363A (ja) ヒートポンプエアコンの室内熱交換器
SU861891A1 (ru) Воздушна турбохолодильна установка
SU473038A1 (ru) Система кондиционировани воздуха
SU827905A1 (ru) Устройство дл термоэлектрическогоОХлАждЕНи