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

Canonical: https://senseible.earth/answers/firozabad-tank-furnace-52000-scm-against-melt-rate

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 Do not quote 52,000 as the typical tank furnace.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](https://senseible.earth/answers/firozabad-glass-cluster-gas-use-and-carbon)
- [Firozabad furnace counts: two tables differ](https://senseible.earth/answers/firozabad-profile-furnace-counts-two-tables)
- [Glass furnace gas per tonne benchmark](https://senseible.earth/answers/glass-furnace-gas-per-tonne-benchmark)
- [Glass container furnace emissions per tonne](https://senseible.earth/answers/glass-container-furnace-emissions-per-tonne)

Sources: [TERI, Cluster profile: Firozabad glass industries (SAMEEEKSHA)](https://sameeeksha.org/pdf/clusterprofile/Firozabad_Glass_Uttar_Pradesh.pdf)

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.