臺灣博碩士論文加值系統

本研究建立稻穀乾燥中心的作業模式, 並對豐原市農會稻穀乾燥中心作業進行模擬, 探討
乾燥中心使用一段式乾燥與兩段式乾燥與最大濕穀處理量的關係, 做為乾燥中心設計及作
業的參考。建立模式時發現乾燥中心的作業可以用網路的方式表示。 使用模擬方式探討
乾燥中心稻穀處理量時可以將串連的運送設施如相連的斗升機與輸送帶兩者視為單一的運
送設施以簡化系統的複雜度。 模擬程式以離散事件方式使用C++程式語言撰寫, 此程式具
有模組化、系統程序與操作程序分離的優點, 日後可較易修改以適用於不同的乾燥中心。
以豐原市農會稻穀乾燥中心硬體配置進行模擬分析得知, 乾燥中心以一段式乾燥作業時,
每日最大濕穀處理量約略等於乾燥機總容量。在乾燥機總容量84-124噸的範圍, 以固定減
乾率(0.7%w.b./h)模式進行模擬時兩段式乾燥可增加每日處理量25%-41%, 以階段遞減減
乾率(1.0-0.55%w.b./h)模式進行模擬時則兩段次乾燥可增加每日處理量50%-61%。

This study builds a general model to describe the operation of rice drying cen
ter. The model can be used for future planning design of a more efficient an
d economic drying center.The operation of a drying center can be described as
a network. Series of facilities such as bucket elevators and conveyors can be
considered as one facility to simplify the simulation. The simulation progra
m is coded with discrete event method by C++ programming language. The progra
m itself is highly modularized with clearly defined system and operation routi
nes, and can be easily modified to fit different drying center configurations
.The Simulation based on the Fong-yuan drying center showed following results.
Daily maximum drying capacity of a drying center with once-over drying metho
d is roughly equal to the total dryer''s capacity of drying center. In the ran
ge of dryer capacity from 84 tons to 124 tons, the increasing daily maximum dr
ying capacity by using the two-stage drying method is 25%-41% with constant dr
ying rate(0.7%w.b./h) and 50%-61% with step decreasing drying rate(1.0-0.55%w.
b./h).