高铁运营管理课件.ppt

高铁运营管理课件.pptCoatings to Control Solar Heat Gain on Rails
——Presentation
Summary
05
Preparation
02
CONTENTS
Background
01
Trial
03
Result & Discussion
04
Background
3
How
What
What is sun kink?
Why
Why it may produce? And its danger?
How to reduce it?
01
solar heat gain
02
a lateral buckling
01
thermal expansion
02
derailment & slow orders
01
heat control coating
Preparation
4
coatings for rails
Organic
Organic+anic
anic
Exterior latex - tan
EL Tan+microballoons
Phosphate-based
Exterior latex - gray
EL Gray+Microballoons
Titanium oxide-based
Rooftop-1
Silica-based
Rooftop-2
We Select
Exterior Latex-tan
Exterior Latex –tan with microballoons
anic-1
Rooftop-2
anic-2
Preparation
5
thermocouples
rails
N
Trial
6
1. Placement of Rails on Test Platform
Data box
Rails
Ties
Insulators
Reflective bed
1
2
3
4
5
6. anic-2
5. anic-1
4. EL-tan with micros
3. Bare
2. EL-tan
1. Rooftop-2
Trial
7
2. Start to experiment
Early April, 2014 July 29, 2014
3. Collect data
The five thermocouples on each rail
Daily average maximum temperatures
Result and Discussion
8
CONCLUSIONS
Air