GB1304407A - - Google Patents

Info

Publication number
GB1304407A
GB1304407A GB2270070A GB2270070A GB1304407A GB 1304407 A GB1304407 A GB 1304407A GB 2270070 A GB2270070 A GB 2270070A GB 2270070 A GB2270070 A GB 2270070A GB 1304407 A GB1304407 A GB 1304407A
Authority
GB
United Kingdom
Prior art keywords
air
drying
working fluid
relative humidity
condensation
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
Application number
GB2270070A
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 filed Critical
Publication of GB1304407A publication Critical patent/GB1304407A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/40—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85—Food storage or conservation, e.g. cooling or drying

Abstract

1304407 Drying foodstuffs; heat pumps TERMOELECTRONICA GENIA LIMITADA 11 May 1970 [12 May 1969] 22700/70 Headings F4G and F4H Foodstuffs are dried in a chamber (not shown) by passing heated air (e.g. at 25‹ C. and 40% relative himidity) in a closed system around them, the air being heated by a heat pump system which utilizes the latent heat of condensation of the water vapour carried by the air and removed from the foodstuff during drying. Wet air A<SP>1</SP> (80% R.H.) leaving the drying chamber is cooled below its dew-point (15À3‹ C.) by drawing it through an evaporator E of the heat pump system by means of a blower V, so that the latent heat of condensation is supplied to the working fluid of the system to vaporize it, and water is removed at E<SP>1</SP>. The air (at 11À5‹ C. and 95% R.H.) is then passed through the condenser C of the system where it absorbs the latent heat of condensation of the working fluid, and attains its drying condition (25‹ C. and 40% R.H.). Since the air circulates in a closed system, the temperature tends to rise and the relative humidity to fall as drying proceeds. The temperature of the air is automatically controlled by means of a thermostat T in the air stream which controls solenoid valves Sp and Sa to divert the gaseous working fluid through an alternative condenser C<SP>1</SP> (exposed to the atmosphere) when the air temperature rises. The relative humidity of the air is automatically controlled by means of a hydrostat H g which controls a solenoid valve Sg to pass some gaseous working fluid to the evaporator thus raising the temperature thereof (and hence the relative humidity of the air), when the relative humidity falls. A dehydrating filter F, an expansion valve X, and a needle valve H, are provided.
GB2270070A 1969-05-12 1970-05-11 Expired GB1304407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT5169269 1969-05-12

Publications (1)

Publication Number Publication Date
GB1304407A true GB1304407A (en) 1973-01-24

Family

ID=20081693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2270070A Expired GB1304407A (en) 1969-05-12 1970-05-11

Country Status (6)

Country Link
DE (1) DE2023167C3 (en)
ES (1) ES379040A1 (en)
FR (1) FR2047662A5 (en)
GB (1) GB1304407A (en)
IT (1) IT954067B (en)
ZA (1) ZA703219B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120120A (en) * 1982-05-21 1983-11-30 Moisture Control And Measureme Control of drying operation
US4644664A (en) * 1980-08-06 1987-02-24 William Bradshaw A method of and apparatus for drying moisture containing material
GB2182760A (en) * 1985-11-08 1987-05-20 Henry Christie Mccullough Drying textile yarns
GB2199644A (en) * 1986-11-06 1988-07-13 Roy William Deavin Dryer
GB2259977A (en) * 1991-09-27 1993-03-31 Ind Tech Res Inst Drying apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107044773A (en) * 2016-11-14 2017-08-15 四川省科本哈根能源科技有限公司 High efficiency drying oven power-saving technology

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4644664A (en) * 1980-08-06 1987-02-24 William Bradshaw A method of and apparatus for drying moisture containing material
GB2120120A (en) * 1982-05-21 1983-11-30 Moisture Control And Measureme Control of drying operation
GB2182760A (en) * 1985-11-08 1987-05-20 Henry Christie Mccullough Drying textile yarns
GB2199644A (en) * 1986-11-06 1988-07-13 Roy William Deavin Dryer
GB2259977A (en) * 1991-09-27 1993-03-31 Ind Tech Res Inst Drying apparatus
GB2259977B (en) * 1991-09-27 1995-05-03 Ind Tech Res Inst Apparatus for drying tea leaves
GB2259843B (en) * 1991-09-27 1995-06-14 Ind Tech Res Inst A process for producing tea

Also Published As

Publication number Publication date
ES379040A1 (en) 1972-08-01
DE2023167B2 (en) 1973-11-15
FR2047662A5 (en) 1971-03-12
ZA703219B (en) 1971-01-27
DE2023167A1 (en) 1970-11-19
IT954067B (en) 1973-08-30
DE2023167C3 (en) 1974-06-06

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Legal Events

Date Code Title Description
PS Patent sealed