How much wood per kilogram of product do dye and chemical units in Vapi use, according to the Bureau of Energy Efficiency reports?

The Bureau of Energy Efficiency (BEE) Vapi reports print wood per kilogram of product for 14 unit rows, 13 different dye and chemical units. They run from 0.05 to 1.88 kilograms, about 38 times apart. Each row is one named unit's year, though the reports call the column an average.

What the number means, in plain words

Wood per kilogram of product is the wood you burn in a year divided by the dye or chemical you ship in that year. It is like litres of petrol for each kilometre driven: it lets a small unit and a big one be compared on the same scale.

The Bureau of Energy Efficiency (BEE) printed it in five Vapi reports, three from 2010 and two from 2011, one small table in each. A lakh is 100,000, so 4 lakh is 400,000 and 5 lakh is 500,000.

All 14 rows, as printed

• Hot air generator report: Nandosal Chem Industries 505,000 kilograms of wood for 603,000 of product = 0.83 (printed; 505,000 / 603,000 is 0.8375). Nitin Dye-Chem 360,000 for 300,000 = 1.20. Durga Dye Chem 135,000 for 100,000 = 1.35.
• 400 kilogram boiler report: Swapnil Organics 135,000 for 80,000 = 1.68 (printed; 135,000 / 80,000 is 1.6875). Haatkesh 84,000 for 48,000 = 1.75. Asin Dye Chem 81,000 for 43,000 = 1.88.
• 600 kilogram boiler report: Nandosal again, 0.83 as printed. Siddhi Silcal Dyes 216,000 for 180,000 = 1.20. Surya Kiran Chemicals 360,000 for 400,000 = 0.90.
• 4 lakh kilocalorie gasifier report: Arthi Intermediates 31,500 for 600,000 = 0.05. Colour India 63,000 for 600,000 = 0.10.
• 5 lakh kilocalorie gasifier report: Dilip Chemicals 28,290 for 60,000 = 0.47. Sterling Pigments 18,033 for 60,000 = 0.30. Chemodist Industries 96,000 for 240,000 = 0.40.

How to read the spread

• Highest 1.88 and lowest 0.05: 1.88 / 0.05 = 37.6 times. The reports do not say what each unit makes or whether product is counted wet or dry, so the spread is not proof that one unit wastes wood.
• The 360,000 kilogram wood figure appears twice, on 300,000 kilograms of product (1.20) and on 400,000 (0.90), in two different reports. Same fuel, different product.
• The gasifier reports head the column wood, but those reports replace oil, and the tested fuel in them is valued at 10,000 kilocalories a kilogram, the oil value. Our reading: take their 0.05 to 0.47 as fuel use, not wood.
• The 5 lakh report says two typical units over a table of three rows.

Work out yours

1. Add the wood bought and used in your last 12 months, in kilograms, from invoices and the stock on hand at the start and end.
2. Add the product shipped in the same 12 months, in kilograms, and say whether it is dry powder or wet cake.
3. Divide wood by product. A figure far from a unit with the same product and dryers is a reason to look at hours and heat losses, not a verdict.

An example unit (not from the reports)

• Wood used in 12 months: 210 tonnes = 210,000 kg
• Dry powder shipped in 12 months: 150,000 kg
• Wood per kg of product: 210,000 / 150,000 = 1.40 kg
• Against the 400 kilogram boiler report units (1.68 to 1.88): lower. Against the hot air generator report units (0.83 to 1.35): higher

The figures are an example to show the sum, not a unit from the reports.

What Senseible does here

Senseible reads fuel invoices and electricity bills into monthly records, so the fuel you bought is on file for the top line of that sum. Product shipped is not read from fuel invoices, so you add that figure yourself.

• Green loan readiness check
• Chemical MSME energy per tonne by cluster
• Vapi reports: wood counted as a cut or zero
• Vapi typical unit: electricity per kg

Sources: BEE, Detailed project report: hot air generator, Vapi dyes and chemicals cluster (2010, SAMEEEKSHA), BEE, Detailed project report: energy efficient boiler 400 kg/hr, Vapi dyes and chemicals cluster (SAMEEEKSHA), BEE, Detailed project report: energy efficient boiler 600 kg/hr, Vapi dyes and chemicals cluster (SAMEEEKSHA), BEE, Detailed project report: bio mass gasifier 4,00,000 kCal/hr, Vapi chemicals and dyes cluster (SAMEEEKSHA), BEE, Detailed project report: bio mass gasifier 5,00,000 kCal/hr, Vapi chemicals and dyes cluster (SAMEEEKSHA)

Last reviewed 2026-11-07. Figures are from the report named above, written in 2010 and 2011; costs, fuel prices and paybacks are at that year's prices. Check today's prices and a current maker's quote before you rely on the payback.