3. Cooler Thermal Efficiency:
A
=
A - B
*100
Heat content of clinker leaving the kiln
Heat losses of clinker cooler
Notation:
A =
B =
B consists of =
Heat loss in cooler exit air
Heat loss in clinker leaving cooler
Heat loss by radiation
a =
b =
c =
4. Items influence the efficiency
The clinker must be brought in an intensive contact
with the cooling air
The quantity of available cooling air affects the
efficiency
The efficiency is not only determined by the machine
itself, but also by the amount of cooling air.
The granulometry of the clinker affects the cooling
efficiency
5. Rough guideline for the Heat Balance
100%
Heat input by clinker 1200oC
Heat output
By secondary air
By shell losses
By clinker outlet
750oC 68%
22%
170oC 10%
6. Rough guideline for the Heat Balance
100%
Heat input by clinker 1200oC
Heat output
By secondary air
By shell losses
By clinker outlet
750oC 68%
22%
170oC 10%
