Trial calculation for heat disinfestation of insects inhabiting duct structures

Abstract

Basic studies on heat disinfestation of duct structures were performed by introducing heated air into a duct system. The thermal and air-flow data were analyzed based on heat and pressure-loss calculation models generally applied for air-conditioning systems. The results revealed that the heat radiating from the duct surface was much larger than the heat required to raise the temperature of the duct itself. The suppression of heat loss from the duct surface by using heat insulating materials, rather than an increase in heat input, will ensure successful implementation of heat disinfestation in duct systems.