Life Cycle Cost Based Optimization of PM Heat Recovery System for Machine Room Ventalation, PaperCon '09 Conference

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Life Cycle Cost based Optimization of PM Heat Recovery System for Machine Room Ventilation Paper machine room ventilation is of ten utilized with the heating system mainly operated by the waste heat recovered from the paper production process. Energy source and target of the heat recovery can vary depending on the machine layout and composition. Two main recovery system alternatives are air-to-air heat recovery where machine room air is directly heated with the out going exhaust air. The second alternative is an indirect system where heat recovery warms in the first stage conveying fluid which then gives energy in the secondary stage for fresh air heating.