Abstract
This paper aims to analyze the constitution of the heating load of bulk curing barn and the heat and mass transfer process for the whole bulk curing barn and set up the energy consumption model to explore the load distribution of bulk curing barn. The hourly load is calculated in the process of tobacco curing of Yunyan 97 as an illustration. The results show that the load distribution is mainly affected by the dehydration rate of tobacco, which is similar to the distribution of humidity load; the largest heat load appears in the later period of the color fixing stage; the envelope heating load increases with the growth of time, whose amount is 15% of the amount of the heating load of bulk curing barn.
Highlights
China is a big country of tobacco production and consumer, and the coal curing has long been a widely adopted way of tobacco flue-curing in every smoke zone of our country
The load is hourly calculated in the process of tobacco curing, taking Yunyan97 as an illustration
The results show that the law of curing barn’s load distribution is similar to the law of humidity load distribution
Summary
China is a big country of tobacco production and consumer, and the coal curing has long been a widely adopted way of tobacco flue-curing in every smoke zone of our country. Curing tobacco with heat pump has become a new energy saving way of tobacco flue-curing. The air source heat pump technology is widely applied in tobacco flue-curing in bulk curing barn, instead of traditional coal-fired barn. It cuts down the building area occupied by the air source heat pump and it’s easy to use [1]. The calculation of the heating load of bulk curing barn is the basis of a heat pump curing equipment type selection. The prediction of the constitution of the heating load of bulk curing barn has great influences on system design, energy saving operation and the quality of tobacco curing. There is of great necessity and practical significance to calculate and analyze the heating load of bulk curing barn
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