JPS57117739A - Flow controlling apparatus for pumps used in cold water feeding apparatus - Google Patents

Flow controlling apparatus for pumps used in cold water feeding apparatus

Info

Publication number
JPS57117739A
JPS57117739A JP56005296A JP529681A JPS57117739A JP S57117739 A JPS57117739 A JP S57117739A JP 56005296 A JP56005296 A JP 56005296A JP 529681 A JP529681 A JP 529681A JP S57117739 A JPS57117739 A JP S57117739A
Authority
JP
Japan
Prior art keywords
cold water
pumps
water feeding
feeding apparatus
load
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.)
Pending
Application number
JP56005296A
Other languages
Japanese (ja)
Inventor
Koichi Katayama
Yoshifumi Konishi
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co Ltd
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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP56005296A priority Critical patent/JPS57117739A/en
Publication of JPS57117739A publication Critical patent/JPS57117739A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE:To reduce the amount of electric power consumed by pumps in a cold water feeding apparatus, by controlling the flow rates of cooling water and cold water according to the load of the cold water feeding apparatus. CONSTITUTION:Two cooling water pumps 4a, 4b are connected in parallel in a cooling water circuit 17 wich connects a cold water feeding apparatus 1 and a cooling tower 2 to each other, and two cold water pumps 5a, 5b are connected also in parallel in a cold water circuit 16 which connects the apparatus 1 and an annular header 8 from an air-conditioning terminal unit 10 to each other. Further, a temperature detector 13 is provided at the inlet of the apparatus 1 for detecting the load of the apparatus 1. At the time of starting operation of the apparatus 1, pumps 4a, 5a are set into operation. When the operating load is kept higher than a first set value for a first set period, pumps 4b, 5b are also set into operation, while, when the operating load is kept lower than a second set value for a second set period, operation of the pumps 4b, 5b is stopped.
JP56005296A 1981-01-16 1981-01-16 Flow controlling apparatus for pumps used in cold water feeding apparatus Pending JPS57117739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56005296A JPS57117739A (en) 1981-01-16 1981-01-16 Flow controlling apparatus for pumps used in cold water feeding apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56005296A JPS57117739A (en) 1981-01-16 1981-01-16 Flow controlling apparatus for pumps used in cold water feeding apparatus

Publications (1)

Publication Number Publication Date
JPS57117739A true JPS57117739A (en) 1982-07-22

Family

ID=11607276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56005296A Pending JPS57117739A (en) 1981-01-16 1981-01-16 Flow controlling apparatus for pumps used in cold water feeding apparatus

Country Status (1)

Country Link
JP (1) JPS57117739A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9353686B2 (en) 2012-05-10 2016-05-31 Rolls-Royce Plc Method and apparatus for generating motive power

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9353686B2 (en) 2012-05-10 2016-05-31 Rolls-Royce Plc Method and apparatus for generating motive power

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