Pine wood chips are to be dried and torrefied to eventually produce 1 tonne (metric ton)...
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Pine wood chips are to be dried and torrefied to eventually produce 1 tonne (metric ton) of torrefied pellets. Suppose we start with 2 tonnes of wood chips having 30% wb moisture content. After the drying process, the biomass will have a moisture content of 15% wb before entering the torrefaction reactor. Determine the change in mass of the wood chips during drying and the energy required (in MJ) for the drying process. Wood pellets can also be produced from the wood chips (at initial moisture content of 30% wb) after drying but without torrefaction. If the wood pellets shall have final moisture content of 10% wb, estimate the amount of wood chips required for producing 1 tonne of pellets. Again, determine the change in mass during drying and the energy required for the drying process. Assumptions No dry matter loss due to drying and pelletizing Energy consumption: 3.5 MJ/kg of water removed from the woody biomass Pine wood chips are to be dried and torrefied to eventually produce 1 tonne (metric ton) of torrefied pellets. Suppose we start with 2 tonnes of wood chips having 30% wb moisture content. After the drying process, the biomass will have a moisture content of 15% wb before entering the torrefaction reactor. Determine the change in mass of the wood chips during drying and the energy required (in MJ) for the drying process. Wood pellets can also be produced from the wood chips (at initial moisture content of 30% wb) after drying but without torrefaction. If the wood pellets shall have final moisture content of 10% wb, estimate the amount of wood chips required for producing 1 tonne of pellets. Again, determine the change in mass during drying and the energy required for the drying process. Assumptions No dry matter loss due to drying and pelletizing Energy consumption: 3.5 MJ/kg of water removed from the woody biomass
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Auditing a risk based approach to conducting a quality audit
ISBN: 978-1133939153
9th edition
Authors: Karla Johnstone, Audrey Gramling, Larry Rittenberg
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