ECCJ / Text for Training Courses / METI / Energy conservationin Japanese factory(2006.7) / Thailand

ECCJ / Text for Training Courses

Thailand

Achieving energy management

Management in small unit (facilities) is more suitable for
improvement of energy intensity than in large unit (factory total).

Shown in Energy intensity.
because, it is easier to evaluate the result of operational/technical improvement comparing with before-improvement.

We can utilize "the 7 tools" for management and improvement.

Energy intensity (or energy unit consumption)

As the management of energy, "energy intensity" is widely accepted.
The definition is:

“Energy intensity” can be applied for “whole factory”, “individual process line”, “each machines”.

“Energy consumption amount”	--- heat (J) and/or electric power (Kwh) (→ combined in crude oil equivalent) --- can be represented by individual particular unit --- steam: ton, water: m3, fuel: Kl etc
“Production amount”	--- unit: weight (tonnage), number of products, treated area(m²), working time (h), etc.

Example: energy intensity of boiler
A) The condition of boiler operation
	a. steam production rate (without electric generation) 4,090 ton per month b. fuel consumption rate (LHV=41.7 GJ/k-litter) 300 kl per month (bunker-C)
B) Calculation
	energy intensity of boiler	= fuel consumption / steam production = 300,000 l / 4,090 ton = 73.3 l-Bunker-C / t-Steam = 3.06 GJ / t-Steam
	the price of Bunker-C is 34,000 Yen / kl, shown by energy cost : 2,492 Yen / t-Steam

Example in a machine manufacturing factory :
(Segmentation of Manufacturing Process)

5/19
Next