ECCJ / Text for Training Courses / METI / Thermal energy efficiency(2006.7) / Thailand

ECCJ / Text for Training Courses

Thailand

3) Characteristics for Each Method

	Combustion		Electricity
Advantage	Direct	Indirect	Resistant	Induction	Discharging
	Direct Energy (Combustion Eff. h = 1.0) High Temp., High Heat Flux Heating Low Running Cost Large Scale Heating Free Location (Even in Developing Area) Various Kind of Fuel can be used		Uniform Heating Simple Control Just Connecting with wires No Exhaust Gases No Detonation Compact Facility		High Temperature High density of Energy
	Large Scale Heating	Atmospheric Heating	Low Cost Hardware	High Thermal Eff. Uniform Heating
Disadvantage	Distribution of Heat Flux Complicated Control Fuel Feeding System (piping, pump, valve.) Generation of Exhaust Gases Risk for Detonation Large facility due to a necessity of burners		Necessity of Energy Conversion Low Heat Flux High Running Cost Small Scale Heating Power Source is required Take account of Eff. at Generator		High Consumption of Electricity Difficulty of Large Scale
	Existence of Flue Gases	Large Number of Burners	Low Eff. of Heat Transfer	High Cost Hardware

2. Application Examples
to Industrial Field

2. Application Examples to Industrial Field

1) Boilers
Heat up water to generate steam or hot water which utilize for process heat, air conditioning, chemical processes, etc.
Category
(1) Water tube boilers
(2) Fire tube boilers
(3) Small One-through boilers
Number of Annual Installations :
Approx. 15,000 Units/Year (1990-2000)

Water Tube Boiler

Water Tube Boiler

3/23
Next