Underground  

Cooling 

Thermal Calculations  


 

Alkalyn Home Page

Arra Cooling 1
Arra Cooling 2
Arra Cooling 3
Arra Cooling 4
Arra Juretic
Arra Dampers
Arra Calculation
arra CTP

 

 

1

Peak train velocity

2

Train mass

3

Number of U/ground stations

4

Number of trains per hour per station

5

Number of hours the trains run per day

6

Air specific heat

7

Density of air

8

Energy in a kg of petrol

9

Weight of petrol per gallon

10

Train tunnel diameter

11

12

13

14

15

Total energy dissipated in brakes per day

16

17

18

19

Distance between stations

20

21

Volume of air in a tunnel section

22

23

Temperature rise of air in tunnel per train braking manoeuvre

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