FI911671A - STYRSYSTEM FOER VIRKESTORK - Google Patents

STYRSYSTEM FOER VIRKESTORK Download PDF

Info

Publication number
FI911671A
FI911671A FI911671A FI911671A FI911671A FI 911671 A FI911671 A FI 911671A FI 911671 A FI911671 A FI 911671A FI 911671 A FI911671 A FI 911671A FI 911671 A FI911671 A FI 911671A
Authority
FI
Finland
Prior art keywords
drying
drying process
measured data
controlled
simulator
Prior art date
Application number
FI911671A
Other languages
Finnish (fi)
Other versions
FI911671A0 (en
FI89744B (en
FI89744C (en
Inventor
Jan-Henrik Sievers
Original Assignee
Valmet Paper Machinery Inc
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 Valmet Paper Machinery Inc filed Critical Valmet Paper Machinery Inc
Priority to FI911671A priority Critical patent/FI89744C/en
Publication of FI911671A0 publication Critical patent/FI911671A0/en
Priority to SE9200776A priority patent/SE507015C2/en
Priority to CA002063917A priority patent/CA2063917A1/en
Publication of FI911671A publication Critical patent/FI911671A/en
Publication of FI89744B publication Critical patent/FI89744B/en
Application granted granted Critical
Publication of FI89744C publication Critical patent/FI89744C/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • 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
    • F26B21/10—Temperature; Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention concerns a method for controlling the function of a drying shed, especially a chamber dryer 10. The temperature T of the air passing through the wood sets K1,K2,K3 being dried and the moisture content Rh under which the drying process occurs are controlled in the method. Progress of the drying process is controlled with a feedback simulator 23 to the drying scheme with which new reference values S for the drying process are assigned continuously or with an appropriate interval. The measured data m are fed from the drying process to simulator 23 for the drying scheme, in which the model for the drying process recorded in it is adapted to the state that corresponds to a drying process based on the stated measured data m. In the method a self-adapting process model is employed in which a given parameter or parameters are left as variables, which are adapted in the correct direction based on the measured data Rh, Tk, u obtained from the process. <IMAGE>
FI911671A 1991-04-08 1991-04-08 Control system for wood dryer FI89744C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI911671A FI89744C (en) 1991-04-08 1991-04-08 Control system for wood dryer
SE9200776A SE507015C2 (en) 1991-04-08 1992-03-13 Control system for wood dryer
CA002063917A CA2063917A1 (en) 1991-04-08 1992-03-25 System for control of a lumber-drying plant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI911671A FI89744C (en) 1991-04-08 1991-04-08 Control system for wood dryer
FI911671 1991-04-08

Publications (4)

Publication Number Publication Date
FI911671A0 FI911671A0 (en) 1991-04-08
FI911671A true FI911671A (en) 1992-10-09
FI89744B FI89744B (en) 1993-07-30
FI89744C FI89744C (en) 1993-11-10

Family

ID=8532262

Family Applications (1)

Application Number Title Priority Date Filing Date
FI911671A FI89744C (en) 1991-04-08 1991-04-08 Control system for wood dryer

Country Status (3)

Country Link
CA (1) CA2063917A1 (en)
FI (1) FI89744C (en)
SE (1) SE507015C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE538180C2 (en) * 2013-11-18 2016-03-29 Coldbay Ab Method and system for drying wood in a drying room

Also Published As

Publication number Publication date
SE9200776L (en) 1992-10-09
CA2063917A1 (en) 1992-10-09
SE507015C2 (en) 1998-03-16
FI911671A0 (en) 1991-04-08
FI89744B (en) 1993-07-30
FI89744C (en) 1993-11-10
SE9200776D0 (en) 1992-03-13

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: VALMET-UTEC OY

BB Publication of examined application
PC Transfer of assignment of patent

Owner name: VALMET-UTEC OY

PC Transfer of assignment of patent

Owner name: VALUTEC GROUP AB

Free format text: VALUTEC GROUP AB