Does the Firozabad profile's 52,000 standard cubic metres a day for a tank furnace unit fit its own melt and gas figures?

At the profile's own 0.20 to 0.35 standard cubic metres (scm) of gas per kilogram of melt, 52,000 scm a day for a tank unit implies 89 to 182 tonnes melted a day, after the melter's 60 to 70 percent share. Its tanks melt 25 to 120. So it reads as a large unit, not an average.

The profile's gas table

• Gas per unit per day: open pot 3,500 scm, closed pot 3,500, tank furnace 52,000, gas muffle furnace 240.
• Specific energy consumption of melting furnaces: 0.20 to 0.35 scm per kilogram of melt, depending on furnace type.
• The tank furnace is about 60 to 70% of a tank unit's energy; the pot furnace about 60% of the gas in a pot unit. The profile gives the 60 to 70% as a share of energy; I apply it to gas.

Pot units fit

A 7 tonne a day pot furnace at 0.20 to 0.35 burns 1,400 to 2,450 scm. As about 60% of the unit's gas, the unit total is 2,333 to 4,083 scm. The printed 3,500 sits inside that.

Tank units do not fit as an average

• A 40 tonne a day tank, the size of 30 units in the profile's second table: melter 8,000 to 14,000 scm; as 60 to 70% of the unit, about 11,400 to 23,300. The 52,000 is 2.2 to 4.6 times that.
• A 120 tonne a day tank, 5 units: melter 24,000 to 42,000 scm; unit total about 34,300 to 70,000. The 52,000 sits inside.
• So 52,000 fits the largest tank units. It does not fit 25 to 50 tonne tanks. That reading is mine.

The cluster total points the same way

The cluster total is 879,280 scm a day. Forty-five tank units at 52,000 would be 2,340,000 alone, 2.7 times the total; add 120 pot units at 3,500 (420,000) and the sum is 2,760,000, 3.1 times. But 3,100 tonnes a day at 0.20 to 0.35 is 620,000 to 1,085,000 scm, which contains 879,280. The cluster total fits the melt and the range; the per-unit tank figure is the odd one.

What to do

• Use your own meter. Do not quote 52,000 as the typical tank furnace.
• The Firozabad cluster gas page gives the profile's 52,000 as a per-unit figure. Read it as fitting only the largest tank units, as this page sets out.

Check your own tank in three lines

• Gas for the melter in a month, from the meter: 330,000 scm (example)
• Glass drawn: 30 days x 40 tonnes = 1,200 tonnes
• 330,000 / 1,200,000 kilograms = 0.275 scm per kilogram, inside the profile's 0.20 to 0.35

The 330,000 scm and 40 tonnes a day are example numbers.

What Senseible does here

Senseible reads fuel invoices and electricity bills into monthly records, so the fuel and power lines of a furnace or kiln are on file. Once you upload your gas bills, each month's gas sits on record to set beside your own tonnes drawn. In the self-serve product it does not read furnace meters directly; custom meter integrations are available on request.

• Firozabad glass cluster gas use and carbon
• Firozabad furnace counts: two tables differ
• Glass furnace gas per tonne benchmark
• Glass container furnace emissions per tonne

Sources: TERI, Cluster profile: Firozabad glass industries (SAMEEEKSHA)

Last reviewed 2026-11-06. Figures are from the 2015 cluster profile by The Energy and Resources Institute (TERI), which describes the cluster at that time; fuels, kiln counts and prices have moved since. Treat them as typical, and check your own records before quoting.