GB2422186A - Induction of external ambient air into refrigeration system - Google Patents

Induction of external ambient air into refrigeration system Download PDF

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Publication number
GB2422186A
GB2422186A GB0426688A GB0426688A GB2422186A GB 2422186 A GB2422186 A GB 2422186A GB 0426688 A GB0426688 A GB 0426688A GB 0426688 A GB0426688 A GB 0426688A GB 2422186 A GB2422186 A GB 2422186A
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GB
United Kingdom
Prior art keywords
air
ambient air
induction
refrigeration system
cooling
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.)
Granted
Application number
GB0426688A
Other versions
GB2422186B (en
GB0426688D0 (en
Inventor
Paul Scammell
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0426688A priority Critical patent/GB2422186B/en
Publication of GB0426688D0 publication Critical patent/GB0426688D0/en
Publication of GB2422186A publication Critical patent/GB2422186A/en
Application granted granted Critical
Publication of GB2422186B publication Critical patent/GB2422186B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439—Cases or cabinets of the open type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0439—Cases or cabinets of the open type
    • A47F3/0443—Cases or cabinets of the open type with forced air circulation
    • A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
    • 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
    • F25B19/00—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • 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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D1/00—Devices using naturally cold air or cold water
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
    • 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
    • F25B2400/22—Refrigeration systems for supermarkets
    • 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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Freezers Or Refrigerated Showcases (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A refrigeration system, such as a bulk supermarket refrigeration and product display system, induces ambient air external to a building in which the system resides, to contribute to, or provide all of the cooling of within the system, when the external air is cool enough to make a contribution to cooling within the system. The system may save energy and be more environmentally friendly than a traditional system.

Description

DESCRIPTION
CHILLED PRODUCT DISPLAY AND AIR SUPPLY SYSTEM
Backiround There is an increasing amount of pressure by governments to reduce the use of energy. This pressure is being generated by the fears of global warming and reducing supplies or threatened reducing supplies of raw materials for energy such as oil and gas. Generating electrical power by means of fossil fuels generates C02, which is released into the atmosphere with the potential of increased global warming.
There are also the various protocols regarding refrigerant gases and the damage that leakage of these will do to the atmosphere. At present, discussions are taking place on the use of F-Gases (fluorinated compounds) . Inevitably there will be restrictions on the use of these gases and alternatives will have to be found. As a result of the inadvisability of using some of the alternative refrigerants in the public areas a solution will be required that restricts these fluids to controlled areas.
Traditionally, secondary refrigerants such as glycols have been used in the public areas. These fluids are being cooled in an area that is controlled and safe for use of the alternative fluids. There is also an increase in the use of integral chilled display units, each unit using traditional or alternative refrigerants. Unfortunately this does not necessarily reduce energy consumption since the heat rejected must be removed from the retail environment by another means.
Direct expansion refrigerant systems in traditional remote display cabinets have higher refrigerant charges, the probability of refrigerant leakage and of equipment failure is likely due to complexity. Disruption to client trading is more likely.
Chilled Product Display and Air Supply System The chilled product display and air supply system is such that the product display is designed to distribute chilled air supplied from an external source in order to effectively maintain the product temperatures required at constant air volume. Supply and return air flows from the product displays to the air handling unit(s) are essential in order to maintain the energy efficiency of the system. Product displays can be arranged to suit the customer requirements.
There will be no need for pumped or mains condensate drainage from the product displays.
The return/outside air will be cooled by a heat exchanger(s) located in the air handling unit(s). The air handling unit(s) will be fitted with an outside air intake bringing outside air in (where appropriate) and mixing it with return air prior to the cooling coil. The outside air will provide free cooling when the outside air temperatures are suitable. Air mixing will be controlled by means of air volume control.
A refrigeration system will supply the necessary mechanical cooling capacity. An effective means of capacity control will be necessary in order to efficiently meet the wide range of capacity, particularly the low capacity requirement during winter periods. Refrigerants will be selected to suit and the cooling coil(s) and refrigeration systems will be close coupled.
Defrost of the cooling coil(s) will be either forced or air off cycle. Condensate drainage will be required at the air handling unit.
Insulated ducting will be installed, connecting the air handling unit(s) to the product displays. Ducting will be installed to suit the construction of the building and the product display locations.
Separate ducting branches will supply the various temperature levels for the product displays. Temperature control for each branch will be by means of return and outside air mixing together with mechanical refrigeration control in order to maintain the required supply air off coil temperature. Monitoring of the product display temperatures will also be included in the control strategy.
Informal Drawings Product Display This drawing shows the general principle and typical Chilled-Open Front arrangement of the product display indicating air supply SK 01 and return air flows for chilled product displays Product Display This drawing shows the general principle and typical Frozen-Full Glass Door arrangement of the product display indicating air supply SK 02 and return air flows for frozen product displays Air Handling Unit This schematic drawing shows the air flow paths to, from Schematic-Air and through the air handling unit(s) SKO3 Duct Schematic This drawing indicates the typical ducting layout from the SK 04 air handling unit to the product displays.

Claims (1)

1. A means of cooling products with air ducted to an enclosure(s) from a cold air supply system that will make use of free cooling from ambient temperature outside air.
GB0426688A 2004-12-06 2004-12-06 Chilled product display and air supply system with free cooling Expired - Fee Related GB2422186B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0426688A GB2422186B (en) 2004-12-06 2004-12-06 Chilled product display and air supply system with free cooling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0426688A GB2422186B (en) 2004-12-06 2004-12-06 Chilled product display and air supply system with free cooling

Publications (3)

Publication Number Publication Date
GB0426688D0 GB0426688D0 (en) 2005-01-12
GB2422186A true GB2422186A (en) 2006-07-19
GB2422186B GB2422186B (en) 2009-06-10

Family

ID=34073202

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0426688A Expired - Fee Related GB2422186B (en) 2004-12-06 2004-12-06 Chilled product display and air supply system with free cooling

Country Status (1)

Country Link
GB (1) GB2422186B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011124222A3 (en) * 2010-04-06 2012-02-23 Kmw Kühlmöbelwerk Limburg Gmbh Refrigerated cabinet having a refrigeration compartment which can be cooled using cold ambient air
WO2019223916A1 (en) * 2018-05-24 2019-11-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Extraction device for a refrigeration appliance
DE102019117188A1 (en) * 2019-06-26 2020-12-31 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilation device for a refrigerated cabinet

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519217A (en) * 1983-01-04 1985-05-28 Hussmann Corporation Supermarket environmental control system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519217A (en) * 1983-01-04 1985-05-28 Hussmann Corporation Supermarket environmental control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011124222A3 (en) * 2010-04-06 2012-02-23 Kmw Kühlmöbelwerk Limburg Gmbh Refrigerated cabinet having a refrigeration compartment which can be cooled using cold ambient air
WO2019223916A1 (en) * 2018-05-24 2019-11-28 Ebm-Papst Mulfingen Gmbh & Co. Kg Extraction device for a refrigeration appliance
DE102019117188A1 (en) * 2019-06-26 2020-12-31 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilation device for a refrigerated cabinet

Also Published As

Publication number Publication date
GB2422186B (en) 2009-06-10
GB0426688D0 (en) 2005-01-12

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20180125 AND 20180131

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20181206