To enhance the energy-saving level of tobacco drying, an in-depth comparative study was conducted on the application effects of open-type, closed-type, and semi-open-type air-source heat pumped in tobacco drying. Through theoretical calculations and field tests, it was found that the semi-open-type unit, relying on the synergy of heat recovery from waste heat and dynamic moisture removal, had the lowest power consumption for drying dry tobacco leaves, demonstrating significant energy-saving advantages. The research results could provide a basis for the selection and promotion of tobacco drying heat pump equipment.

air source heat pump  /  flue-cured tobacco  /  waste heat recovery  /  latent heat of vaporization