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PROGRAM
DE CALCUL A DURATEI DE DEZGHETARE A BUSTENILOR
SI SIMULARE A PROCESULUI
Maria Bernadett SZMUTKU
Drd.ing. - Universitatea TRANSILVANIA din Brasov
- Facultatea de Ingineria Lemnului
Adresa: B-dul Eroilor nr. 29, 500036 Brasov, Romania
E-mail: bernadett_20bv@yahoo.com
Mihaela CAMPEAN
Prof.dr.ing. - Universitatea TRANSILVANIA din
Brasov - Facultatea de Ingineria Lemnului
Adresa: B-dul Eroilor nr. 29, 500036 Brasov, Romania
E-mail: campean@unitbv.ro
Wilhelm LAURENZI
Conf.dr.ing. - Universitatea TRANSILVANIA din
Brasov - Facultatea de Ingineria Lemnului
Adresa: B-dul Eroilor nr. 29, 500036 Brasov, Romania
E-mail: willy@unitbv.ro
Rezumat:
         Lucrarea
prezinta baza teoretica si programul orginal realizat
in mediul de programare Borland Delphi, care efectueaza
calculul duratei de dezghetare a bustenilor, simularea
animata a procesului de dezghetare, precum si
trasarea graficului de dependenta intre durata
de dezghetare si adancimea de dezghetare. Programul
are la baza ecuatia duratei de incalzire prin
conductie a sortimentelor de forma cilindrica
cu schimbarea starii de agregare a apei, care
ia in considerare urmatorii factori de influenta:
specia lemnoasa, diametrul busteanului, temperatura
si umiditatea initiala ale lemnului, mediul de
tratare utilizat si temperatura acestuia. Programul
reprezinta un instrument usor de utilizat si practic
pentru determinarea rapida a duratei de dezghetare
a bustenilor.
Cuvinte cheie: model matematica,
program de calcul, dezghetare, busteni.
Bibliografie:
CAMPEAN, M., MARINESCU, I. (2003). Tratamente
termice ale lemnului. Bazele teoretice (Heat Treatments
of Wood. Theretical Bases). Editura Unversitatii
Transilvania, Brasov.
CAMPEAN, M., ISPAS, M., MARINESCU, I. (2002).
Study Concerning the Distribution of Temperature
in Wood During a Heating Process. Proceedings
of ICWSE-2002, Brasov (Romania), November 2002:
53-58.
CISMARU, M., (2003). Fizica lemnului si a materialelor
pe baza de lemn (Physics of Wood and Wood-Based
Materials). Editura Universitatii Transilvania,
Brasov.
CHUDINOV, B.S. (1968). Theory of Thermal Treatment
of Wood (in Russian). Akad. Nauk, Moscow.
MARINESCU, I. (1980). Uscarea si tratarea termica
a lemnului.Vol II (Drying and Thermal Treatment
of wood. Vol. II), Editura Tehnica, Bucuresti.
FEIHL, O. (1972). Heating Frozen and Nonfrozen
Veneer Logs. Forest Products Journal, 22(10):
41-50.
FLEIISCHER, H.O. (1959). Heating Rates for Logs,
Bolts and Flitches To Be Cut Into Veneer. USDA
Forest Service, Forest Products Laboratory, Madison,
Wisconsin.
KANTER, K.R. (1957). The Thermal Properties of
Wood (in Russian). Derev. Prom. 6(7): 17-18
KORALA, A., KIVIMAA, E. (1947). Thawing Rate of
Frozen Birch Log in Water. State Technical Research
Institute, Helsinki.
LAURENZI, W. (2009). Programarea calculatoarelor
si limbaje de programare (Computer Programming
and Programming Environments). Course support.
Universitatea Transilvania din Brasov.
MACLEAN, J.D. (1946). Temperatures Obtained in
Timbers When Surface Temperature is Changed After
Various Periods of Heating. USDA Forest Service,
Forest Products Laboratory, Madison, Wisconsin.
MAKU, T. (1954). Studies on the Heat Conduction
in Wood. Wood Research, Bulletin No. 13, Wood
Research Institute, Kyoto University, Kyoto, Japan.
STEINHAGEN, H.P., LEE, H.W., LOEHNERTZ, S.P. (1987).
LOGHEAT: a computer program for determining log
heating times for frozen and nonfrozen logs. Forest
Products Journal, 37(11/12): 60-64.
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