EN
Calculation of the specific heatcapacityof frozen wood during its defrosting in hygroscopic diapason. An approach for the calculation of the specific heat capacity c of frozen wood with ice in it, which is created from the freezing of hygroscopically bounded water, has been suggested. The approach takes into account the physics of the process of towing of this ice in the wood. It reflects for the first time the influence of the fiber saturation point ufsp of the separate wood species on the specific heat capacity of frozen wood c during wood defrosting in hygroscopic diapason and also the influence of the temperature on the ufsp and c. For the calculation of c according to the suggested approach a software program has been prepared, which has been input in the developed by Microsoft calculation environment of Visual Fortran Professional. With the help of the program computations have been made for the determination of c during towing of the mentioned above ice in oak wood with moisture content 0 ≤ u ≤ ufsp at the temperature range between -60oC and -0oC.
PL
Pojemność cieplna zamorożonego drewna dębu podczas rozmrażania. Rozważano możliwość wyliczania pojemności cieplnej c zamarzniętego drewna wraz z lodem, powstałym wskutek zamrażania higroskopijnie związanej wody. Wzięto pod uwagę wpływ punktu nasycenia włókien róznych gatunków oraz temperatury na pojemność cieplną układu drewno-lód. Wykonano specjalne oprogramowanie na bazie Visual Fortran Professional fitmy Microsoft. Wyznaczono pojemności cieplne zamrożonego drewna dębu o wilgotności od zera do punktu nasycenia włókien, w zakresie temperatur od -60oC do -0oC