MODULE IV
Condensing boiler technology Page 8

Module IV ServitecStartPrevious pageNext pageEnd

 

Overview of selected technical terms

Term
Symbol
Unit
Explanation
Operating condition/state


B
-
 
Standard state



N
-
 
Actual air requirement



Lactual
m3/m3
 
Theoretical air requirement



Lmin
m3/m3
 
Air changes number



 

 

Condensing boiler technology based/heating value ratios of different fuels
Fuel
Calorific
value
Ho
[kWh/kg]
Heating value
Hu
[kWh/kg]
Ratio Ho/Hu [-]
Ratio Ho/Hu
[%]
Anthracite coal
9,48
9,24
 
 
Coke
8,25
8,21
 
 
Dry wood
4,76
4,33
 
 
Dry peat
4,17
3,69
 
 
Fuel oil EL
12,8
11,9
 
 
 
[kWh/m3]
[kWh/m3]
[-]
[-]
Natural gas L
10,0
9,0
   
Natural gas H
11,1
10,0
   
City gas
5,0
4,5
   
Propane
28,1
25,9
   
Butane
37,0
34,1
   
The values for Ho and Hu are only exemplary and can differ slightly.

 

 

Module IV ServitecStartPrevious pageNext pageEnd


• • Copyright © IWB e.V. 1996-2000 • Design, technical realisation and webmaster: ohlendorf@ohlendorf.de • •
• • Sponsored by EDUVINET • 800 x 600 recommended • •