WO2006049601A3 - Refrigeration system having a high turndown ratio - Google Patents

Refrigeration system having a high turndown ratio Download PDF

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Publication number
WO2006049601A3
WO2006049601A3 PCT/US2004/035876 US2004035876W WO2006049601A3 WO 2006049601 A3 WO2006049601 A3 WO 2006049601A3 US 2004035876 W US2004035876 W US 2004035876W WO 2006049601 A3 WO2006049601 A3 WO 2006049601A3
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
varying
surface area
effective surface
heat load
Prior art date
Application number
PCT/US2004/035876
Other languages
French (fr)
Other versions
WO2006049601A2 (en
Inventor
Craig C Andrews
Original Assignee
Lynntech Inc
Craig C Andrews
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 Lynntech Inc, Craig C Andrews filed Critical Lynntech Inc
Priority to PCT/US2004/035876 priority Critical patent/WO2006049601A2/en
Publication of WO2006049601A2 publication Critical patent/WO2006049601A2/en
Publication of WO2006049601A3 publication Critical patent/WO2006049601A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/12—Producing ice by freezing water on cooled surfaces, e.g. to form slabs
    • F25C1/14—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes
    • F25C1/142—Producing ice by freezing water on cooled surfaces, e.g. to form slabs to form thin sheets which are removed by scraping or wedging, e.g. in the form of flakes from the outer walls of cooled bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/04—Refrigerant level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/15—Power, e.g. by voltage or current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/19—Pressures
    • F25B2700/197—Pressures of the evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2400/00—Auxiliary features or devices for producing, working or handling ice
    • F25C2400/14—Water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2600/00—Control issues
    • F25C2600/04—Control means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Refrigeration units having flooded evaporators and methods of their operation that include the steps of varying an effective surface area of the evaporator (11) to control a heat load on the evaporator, wherein the effective surface area is wetted by a liquid refrigerant. Varying the effective surface area of the flooded evaporator (11) may include monitoring a temperature, a level, and/or a pressure of the refrigerant in the evaporator and adjusting a flow rate of the liquid refrigerant into the evaporator to change the temperature, level and/ or pressure to a desired value. Additional steps may include varying a desired heat load to the evaporator as a function of a present capacity of the compressor (12) and/or varying the capacity of the compressor as a function of a presently available power. The refrigeration unit includes means for varying an effective surface area of the evaporator to control a heat load on the evaporator.
PCT/US2004/035876 2004-10-28 2004-10-28 Refrigeration system having a high turndown ratio WO2006049601A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2004/035876 WO2006049601A2 (en) 2004-10-28 2004-10-28 Refrigeration system having a high turndown ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2004/035876 WO2006049601A2 (en) 2004-10-28 2004-10-28 Refrigeration system having a high turndown ratio

Publications (2)

Publication Number Publication Date
WO2006049601A2 WO2006049601A2 (en) 2006-05-11
WO2006049601A3 true WO2006049601A3 (en) 2008-01-24

Family

ID=34959514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/035876 WO2006049601A2 (en) 2004-10-28 2004-10-28 Refrigeration system having a high turndown ratio

Country Status (1)

Country Link
WO (1) WO2006049601A2 (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1819861A (en) * 1930-12-20 1931-08-18 York Ice Machinery Corp Refrigeration
GB389606A (en) * 1931-01-15 1933-03-23 Bbc Brown Boveri & Cie Improvements in and relating to heat and cold exchange apparatus such as evaporatorsfor refrigerating machines
US2035734A (en) * 1934-09-25 1936-03-31 Gen Motors Corp Refrigerating apparatus
US2319130A (en) * 1941-03-05 1943-05-11 B F Sturtevant Co Refrigeration control for air conditioned passenger vehicles
US2585020A (en) * 1948-07-26 1952-02-12 Lessard Art of making cracked ice
US2720084A (en) * 1953-06-09 1955-10-11 James G Hailey Energy storage for air conditioning systems
US3036443A (en) * 1957-11-28 1962-05-29 Trepaud Georges Freezing apparatus
US3474633A (en) * 1968-04-17 1969-10-28 Phillips Petroleum Co Recovery of entrained liquid refrigerant
US4048815A (en) * 1974-08-30 1977-09-20 Theodore Kattis Flake ice maker
US4373353A (en) * 1977-08-17 1983-02-15 Fedders Corporation Refrigerant control
DE3300013A1 (en) * 1983-01-03 1984-07-12 Friedrich 2000 Oststeinbek Horwarth Apparatus and process for the production of flake ice
US4840033A (en) * 1988-06-20 1989-06-20 Frick Company Ice builder and control system therefor
US6105387A (en) * 1999-05-05 2000-08-22 Daimlerchrysler Corporation Two pass evaporator
WO2001035035A1 (en) * 1999-11-10 2001-05-17 Grasso Products B.V. Bath evaporator
US20040237555A1 (en) * 2003-05-30 2004-12-02 Andrews Craig C. Mechanical refrigeration system with a high turndown ratio

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1819861A (en) * 1930-12-20 1931-08-18 York Ice Machinery Corp Refrigeration
GB389606A (en) * 1931-01-15 1933-03-23 Bbc Brown Boveri & Cie Improvements in and relating to heat and cold exchange apparatus such as evaporatorsfor refrigerating machines
US2035734A (en) * 1934-09-25 1936-03-31 Gen Motors Corp Refrigerating apparatus
US2319130A (en) * 1941-03-05 1943-05-11 B F Sturtevant Co Refrigeration control for air conditioned passenger vehicles
US2585020A (en) * 1948-07-26 1952-02-12 Lessard Art of making cracked ice
US2720084A (en) * 1953-06-09 1955-10-11 James G Hailey Energy storage for air conditioning systems
US3036443A (en) * 1957-11-28 1962-05-29 Trepaud Georges Freezing apparatus
US3474633A (en) * 1968-04-17 1969-10-28 Phillips Petroleum Co Recovery of entrained liquid refrigerant
US4048815A (en) * 1974-08-30 1977-09-20 Theodore Kattis Flake ice maker
US4373353A (en) * 1977-08-17 1983-02-15 Fedders Corporation Refrigerant control
DE3300013A1 (en) * 1983-01-03 1984-07-12 Friedrich 2000 Oststeinbek Horwarth Apparatus and process for the production of flake ice
US4840033A (en) * 1988-06-20 1989-06-20 Frick Company Ice builder and control system therefor
US6105387A (en) * 1999-05-05 2000-08-22 Daimlerchrysler Corporation Two pass evaporator
WO2001035035A1 (en) * 1999-11-10 2001-05-17 Grasso Products B.V. Bath evaporator
US20040237555A1 (en) * 2003-05-30 2004-12-02 Andrews Craig C. Mechanical refrigeration system with a high turndown ratio

Also Published As

Publication number Publication date
WO2006049601A2 (en) 2006-05-11

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