Research And Application On Thermal And Mass Transfer In The Integrated Using Of Biologic Substance

Effective disposal and utilization of biologic products refuse has become one of the most important global issues recently as waste biologic substances such as crop waste, residues of biologic food procession, and municipal refuse caused by large-scale production of biological product are severely destroying environmental balance and polluting ecosystem. And in the study of thermal, biologic substance shows different thermal characteristics based on its own biological quality, therefore, the research and analysis on the mass and thermal transition process of biological substances would be helpful as preparation of the industry application.This dissertation is based on the research and analysis of mass and thermal transition rules during fermentation process of oranges peels waste after juice extraction and acquisition process of fermentation outcome; it also explores further usage of those rules. It contains 3 parts of research:â‘ The research of the thermal transfer process of microorganism with biology inner heat sourceThe heat release in the fermentation course is analyzed, and the influence of the temperature on the growth of microorganism is also discussed. The growth velocities of microorganism in wine fermentation and fermentation of the orange peels are researched, the relations between growth velocities of microorganism and temperature are obtained, and the conclusion shows that temperature increase accelerates the growth velocities of microorganism within appropriate temperature range; however overheat also accelerates the aging and death of microorganism cells. With the consideration of the specific heat capacity, the modification of the specific growth velocities is put forward. And the wild fermentation without temperature control was observed, the heat release of fermentation is investigated, also the thermal characteristics are measured.With considered of the microbial fermentation course as an unsteady thermal transfer process with a biology inner heat source, the heat and mass transfer in the porous Substrate are analyzed, and the thermal transfer characteristics and temperature distribution in the course are researched. The experiments with temperature control are made. The influence method and range of the single temperature control pipe are defined. With the consideration of the inner heat source investigated formerly, the unsteady heat transfer is analyzed, and the expressions of temperature distributions are obtained. The results from calculation agree with the experimental results well.â‘¡The research of the law of thermal and mass transfer in fluidized drying process about the zymotic orange peels.The disposal and application of the zymotic orange peels are discussed, the drying mechanism of the orange peels and the law of thermal and mass transfer in drying process are researched.According to the experiment result, the fluidized drying method is suited for the drying of zymotic orange peels. The method of single factor analysis is adopted to analyze the influence to the drying characteristic of drying parameters such as the air temperature(T), the air velocity(v), the height of bed layer(H)and the initial moisture content(W0)etc. The result shows that the dry velocity will be faster with the rise of the air temperature or velocity; Besides, the dry velocity will slower when the height of bed layer or the initial moisture content get higher. However, the influences of these dry parameters on the dry velocity become slowly after some minutes. The method of orthogonal experiment is used to analyze the importance of these dry parameters on the drying characteristics. The result shows that the importance of dry parameters influence on the dry velocity is following: W0> T>V >H, while the importance of dry parameters influence on the consumption of unit energy is obtained: V >T > W0>H.The thermal and mass transfers for the gas-solid fluid bed of zymotic orange peels drying are researched. Base on the energy conservation, the expression for local heat transfer coefficient is educed; the influences on the heat transfer of fluid parameters are analyzed. And the regression expression of thermal and mass transfer is obtained based on the experimental data. Then the mathematical simulations for the gas-solid fluid behavior are made.â‘¢The industry design and application for the zymotic orange peels The industry experiments of zymotic orange peels are introduced, the experiments of cow feeding are made to prove the zymotic orange peels can use for a complementarity for milk cow feed.