@article{oai:kanazawa-u.repo.nii.ac.jp:00009323, author = {関, 平和 and 小森, 友明}, issue = {3}, journal = {Journal of Agricultural Meteorology = 農業気象}, month = {Jan}, note = {Mass, energy and exergy balance equations for a batch reactor of composting were derived with several assumptions, using various information on composting which had been obtained from previous investigations. In the batch reactor, temperature, moisture content and chemical composition were regarded to be homogeneous. According to the numerically calculated results under the practical operating conditions, a structure of energy conversion in composting process was quantitatively discussed. A ratio of the amount of heat accumulated within the reactor to the total amount of heat generated in the reactor, Hacc/Hgen, decreased with time, while a ratio of the amount of heat lossed from the reactor to the total amount of heat generated in the reactor, Hloss/Hgen, increased with time. On the other hand, about 90% of the total amount of exergy generated in the reactor was occupied by the dissipated exergy because of irreversibility of the process. It was found out that there would be a remarkable qualitative degradation of energy in the energy conversion process of composting from chemical to thermal energy, and that an exergy efficiency of heat recovery would be at most 10% even by an ideal heat recovery system.}, pages = {225--235}, title = {堆肥化過程におけるエネルギー変換構造}, volume = {48}, year = {1992} }