heat flow
△Q
cal/s , Joule/s
TMA
weight
G(%)
g
DTA
dimension
△L(%)
m
여기서는 열분석 방법 중 DSC기기에 관해 설명하려 한다. 고분자는 분자사슬 중의 어느 길이를 단위로 보며 이러한 segment의 회전에 의한 열운동을 micro-brownian motion이라 한다. 이러한 열운동이 일어나기 시작하는 온도가 유리전이온도로
heatcapacity; no formal phase change occurs.
As the temperature increases, at some point the molecules may obtain enough freedom of motion to spontaneously arrange themselves into a crystalline form. This is known as the crystallization temperature (Tc). This transition from amorphous solid to crystalline solid is an exothermic process, and results in a peak in the DSC signal. As the temperat
대체적으로 물질은 열과 에너지를 받으면 입자의 운동에너지가 증가하며 이에 동반하여 입자의 운동속도 또한 증가한다. 이는 물질의 팽창을 유발하는데 물질이 이처럼 열과 에너지를 받아 팽창하는 현상을 열팽창(thermal expansion)이라고 한다.
먼저, 열팽창을 이해하기에 앞서 1차원적인 선의 팽창(lin
Capacity & Problem Analysis
I. Capacity Analysis
RP1 was highly mechanized. The process could be classified into several operations : receiving and testing, dumping, temporary holding, destoning, dechaffing, drying, separation, and bulking and bagging. We found major bottleneck on the dryers through NCC flowchart.
First, Bulk trucks carrying process berries arrived at RP1, loading 20
capacity of RP1? What is the maximum processing capacity of each operation?
2) CAPACITY & PROBLEM ANALYSIS
i. CAPACITY ANALYSIS
1. Berries upload to dump
(1) Average truck delivery is 75bbl
(2) Suppose to take 10minutes to each truck.
Each dumps capacity=75(bbl/hr)*6=450(bbl/hr)
(3) Total dumps capacity=450(bbl/hr)*5=2250(bbl/hr)
2. Temporary holding bins capacity
(1) Bins1-16(dr