【摘要】 介绍了空气回热和热泵系统回热两种不同的回热型热泵木村干燥机及其优缺点，阐述了采用空气回热的热泵木材干燥机的优越性，并对其运行特性进行了分析和探讨。通过分析和试验结果表明，采用空气回热的热泵木材干燥机较不采用空气回热的热泵木村干燥机的除湿量大大提高。更多还原

【Abstract】 This article introduced air returning heat and heat pump returning heat type lumber dry machineand their merits and demerits, expounded superiority of air returning heat type heat pump lumber dry machine, analysed aed approached its working feature.Through analysis and test,the results showed that its remove humidity quantity much bigger for using air retuming heat type heat pump lumber dry machine than using otherreturning heat type heat pump lumber dry machine.更多还原