Numerical study of heat pump contact drying

Simulation;Heat Pump;Drying

Catton, William ; Sun, Zhifa ; Carrington, Gerry

University of Otago

关键词: Simulation;    Heat Pump;    Drying;   

Others  :  https://ourarchive.otago.ac.nz/bitstream/10523/1905/3/CattonWilliamR2011PhD.pdf

美国|英语

来源: Otago University Research Archive

【 摘 要 】

Drying is one of the most energy intensive industrial operations, and it is well established that heat pump driers (HPDs), by recycling waste heat, may provide significantly higher drying energy efficiencies and lower net greenhouse gas emissions than conventional driers. In addition, however, in the design of the HPDs themselves, there remains significant further scope for energy-efficiency improvements. Second-law analyses of HPDs have shown previously that losses associated with the convective transfer of heat to the drying process are a significant limiting factor for energy efficiency. This thesis uses numerical simulation to explore the possibility of improving on the energy performance of HPD systems by employing conductive heat transfer from the refrigerant condenser, through a heating plate and through the product itself, to drive the drying process in an