faq

Calculation of Energy Available from Flue Gases

2013-07-10 08:29:33


Calculation of Energy Available from Flue Gases

Specific heat of exhaust gases / m3 for 800-9000C = 0.308 kcal/m3/c0

Temperature of exhaust gas available from the existing Rotary kiln    -    8500C

Temperature of exhaust gas after vertical drier                                   -    2500C

                                                                    -------------

Usable heat                                                            -      6000C

 Hence, heat available = 0.308 X 6000C

= 184.8 kcal.

Quantity of heat available per hour = 24,000 m3/hour

Total heat available = 184.8 X 24,000 = 4,435,200 kcal / hour

Capacity of Vertical drier = 20 tons per hour

Water evaporation per hour = 1,600 kgs (based on 8% moisture)

Energy needed per kg of water evaporation   -  625 kcal

Total heat spent on water evaporation  - 10,00,000 kcal/hour

Remaining heat available for pre-heating – 3,435,200 kcal/hour