Every generation has some fool who will speak
the truth as he sees it!
Boris Pasternak

Official Publication of the Philippine Metalcasting Association, Incorporated
Series XXXVI, Number 7 January 2008

JAPANESE EXPERTS HERE FOR ENERCON PROJECT

TIPS ON THERMAL ENERGY

BOILERS:

• 5% reduction in excess air increases boiler efficiency by 1% (or 1% reduction of residual oxygen in stack gas increases boiler efficiency by 1%).

• 22°C reduction in flue gas temperature increases boiler efficiency by 1%.

• 6°C raise in feed-water temperature by economizer/condensate recovery corresponds to a 1% saving in fuel consumption in boiler.

• 20°C raise in preheated combustion air temperature by waste-heat recovery results in 1% fuel savings.

• a 3mm. diameter hole on a pipeline carrying 7kg/cm2 steam would waste 32,650 liters of fuel oil per year.

• a 3mm thick soot deposit on the heat transfer surface cn cause an increase in fuel consumption to the tune of 2.5%.

• A 1mm thick scale (deposit) on the water side could increase fuel consumption by 5-8%. read more