GB1533651A - Dehumidifying methods and means - Google Patents

Dehumidifying methods and means

Info

Publication number
GB1533651A
GB1533651A GB4826274A GB4826274A GB1533651A GB 1533651 A GB1533651 A GB 1533651A GB 4826274 A GB4826274 A GB 4826274A GB 4826274 A GB4826274 A GB 4826274A GB 1533651 A GB1533651 A GB 1533651A
Authority
GB
United Kingdom
Prior art keywords
air
stage
refrigerant fluid
lmtd
evaporator
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
GB4826274A
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.)
Ebac Ltd
Original Assignee
Ebac 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 Ebac Ltd filed Critical Ebac Ltd
Publication of GB1533651A publication Critical patent/GB1533651A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

1533651 Drying using a heat pump EBAC Ltd 6 Feb 1976 [7 Nov 1974 (2)] 48262/74 and 48263/74 Heading F4G In a method of drying, e.g. timber T, using a refrigeration or heat pump arrangement incorporating a condenser stage in which a refrigerant fluid is condensed at not less than 60‹ C., whereby the relative humidity of an air flow used for drying is reduced, the ratio of the heat rejection rate (Kilocalories/sec.) obtained in the stage, to the rejection capacity (Kilocalories/sec./ OC LMTD) of the stage, is not more than 14 :1 whereby to maintain an LMTD (logarithmic mean temperature difference) in the stage at less than 14‹C., preferably not more than 11‹C. The method makes possible operation at higher temperatures with a given refrigerant fluid. LMTD is defined with respect to the temperature differences between the refrigerant fluid and the air at the air inlet and air outlet to the condenser. In one embodiment, Fig. 1, (not shown), the evaporator and the condenser of the heat pump arrangement are in a common casing and the air is circulated through both. Some of the air may bypass the evaporator. In another embodiment, Fig. 3 (not shown), ambient air is used to heat the refrigerant fluid in the evaporator, which is outside the casing.
GB4826274A 1974-11-07 1974-11-07 Dehumidifying methods and means Expired GB1533651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4826374 1974-11-07

Publications (1)

Publication Number Publication Date
GB1533651A true GB1533651A (en) 1978-11-29

Family

ID=10447963

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4826274A Expired GB1533651A (en) 1974-11-07 1974-11-07 Dehumidifying methods and means

Country Status (1)

Country Link
GB (1) GB1533651A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196526A (en) * 1978-10-26 1980-04-08 CEAF S.p.A. Drying plant, particularly for timber
US4250629A (en) * 1979-02-21 1981-02-17 Lewis Donald C Lumber conditioning kiln
FR2475200A1 (en) * 1980-02-01 1981-08-07 Madre Marc Wood drying system using alternate hot dry and refrigerated humid air - using heat pump to control temp. of wood in drying enclosure and humidifying spray to control air moisture content
USRE31633E (en) * 1979-02-21 1984-07-24 Lumber conditioning kiln
EP0277801A2 (en) * 1987-02-03 1988-08-10 Kc Products Limited Crop conditioner
FR2629904A1 (en) * 1988-04-08 1989-10-13 Tollis Max Pierre Device for ventilating a refrigerating evaporator which dehumidifies the air from a dryer, particularly a wood dryer
GB2263968A (en) * 1991-12-02 1993-08-11 Rodolfo Jorge Neumann Drying timber
FR2778456A1 (en) * 1998-05-11 1999-11-12 Ther Eco Agricultural drying device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196526A (en) * 1978-10-26 1980-04-08 CEAF S.p.A. Drying plant, particularly for timber
US4250629A (en) * 1979-02-21 1981-02-17 Lewis Donald C Lumber conditioning kiln
USRE31633E (en) * 1979-02-21 1984-07-24 Lumber conditioning kiln
FR2475200A1 (en) * 1980-02-01 1981-08-07 Madre Marc Wood drying system using alternate hot dry and refrigerated humid air - using heat pump to control temp. of wood in drying enclosure and humidifying spray to control air moisture content
EP0277801A2 (en) * 1987-02-03 1988-08-10 Kc Products Limited Crop conditioner
EP0277801A3 (en) * 1987-02-03 1988-10-05 Kc Products Limited Crop conditioner
FR2629904A1 (en) * 1988-04-08 1989-10-13 Tollis Max Pierre Device for ventilating a refrigerating evaporator which dehumidifies the air from a dryer, particularly a wood dryer
GB2263968A (en) * 1991-12-02 1993-08-11 Rodolfo Jorge Neumann Drying timber
FR2778456A1 (en) * 1998-05-11 1999-11-12 Ther Eco Agricultural drying device

Similar Documents

Publication Publication Date Title
US4269261A (en) Microcomputer control for supplemental heating in a heat pump
US2515825A (en) Single stage refrigeration utilizing holdover means
EP0047353A1 (en) A process and system for drying products and materials, such as wood
GB1533651A (en) Dehumidifying methods and means
SE7406316L (en) PROCEDURE AND DEVICE FOR DEFROSTING EVAPORATORS FOR HEAT PUMPS.
US4359313A (en) Liquid ring pump seal liquid chiller system
FR2261490A1 (en) Air conditioning equipment for product drying - sucks in humid air in housing via products before evaporation
FR2345679A1 (en) Heat pump for drying bulk material - recuperates heat from refrigerant condenser and cold air flows through evaporator and subcooler
GB1025538A (en) Improvements in and relating to methods and apparatus for cooling of gases during compression thereof
US2734348A (en) wright
US3185209A (en) Refrigeration and heating system
GB1304407A (en)
GB2059646A (en) Microcomputer control for supplemental heating in a heat pump
FR2309806A1 (en) Heat pump air conditioning system - has cooling circuit of engine driving first pump connected to second pump
FR2279040A1 (en) Reversible cycle heat pump - distributor valves change flow for summer or winter operation combined with water and air temp control
US2094342A (en) Cooling air
US3041849A (en) Heat pump systems
JPH01201162A (en) Heat radiation system for automatic chemical analyzing instrument
ATE10028T1 (en) HEAT PUMPS.
JPS5721739A (en) Controller of air conditioner
SU909458A1 (en) Apparatus for drying air
US3499298A (en) Condenser pressure control means
KR880006521A (en) Heat pump dryer
JPS6071859A (en) Heat pump
SU1672141A1 (en) Artificial climate device

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee