Large Boiler

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Large Boiler




ModGregTech 5
TypeMultiblock structure
Tooltip textController Block for the Large Boiler
Size: 3x3x5
Controller (front middle in Fireboxes)
3x3 of Fire Boxes (bottom layer, Min 3!)
3x3x4 of Casing (above Fireboxes, hollow, Min 24!)
3 Pipe Casing Blocks inside the Hollow Casing
1x Input (one of Fireboxes)
1x Maintenance Hatch (one of Fireboxes)
1x Muffler Hatch (one of Fireboxes)
1x Fluid Output (one of Main Casing)
Upgrades
Steam Production (Bronze)800L/t
Steam Production (Steel)1200L/t
Steam Production (Titanium)1600L/t
Steam Production (Tungstensteel)2000L/t

The Large Boiler is a multiblock structure added by GregTech 5 that burns enormous amounts of solid and liquid fuels to produce enormous amounts of Steam from Water.

Recipe and Construction[edit | edit source]

A Large Boiler can be built from Bronze, Steel, Titanium or Tungstensteel. All versions Burn fuel at the same rate, but produce Steam at different rates.

The Large Boiler is constructed as a 3x3x5 Structure. The bottom Layer has the Controller in the middle front. Other parts of the bottom layer are:

  • 1 or 2 Input Hatches to input Water.
  • 1 or 2 Input Hatches/Buses to input Fuel.
  • 1 Maintenance Hatch.
  • 1 Muffler Hatch (Must face an Air Block).
  • 3 or 4 Fireboxes.

The top 4 layers are made of rings of Bronze Plated Bricks/Solid Steel Machine Casings/Stable Titanium Casings/Robust Tugstensteel Casings (33 blocks total), with 3 Pipe Machine Casings in the center. Up to 9 of the Casings can be exchanged with Output Hatches, from which Steam is output.

A finished Large Bronze Boiler looks like this:

Boiler1.jpg

In the inside it looks like this:

Boiler2.jpg

Usage[edit | edit source]

The Boiler can burn almost all forms of solid and liquid fuel, except lava. However, it is 20% less fuel efficient when burning refined fuels. (Refined fuels are fuels that can be burned in a Diesel Generator.)

Large Boilers must contain water at all times while active. If at any point the Boiler runs out of water while it is active, it will explode. As of GregTech 5 Unofficial version 5.08.30, the Large Boiler can use either Water or Distilled Water

Note: This is different from other boilers, and much more dangerous due to the Large Boiler's size.

The Large Boiler takes time to heat up before it can produce steam at its maximum rate. Higher tier boilers take longer to reach maximum heat. Boiler heat affects its Steam output, but not its fuel consumption. Burning refined fuels cause the Boiler to reach maximum heat in 1/4th of their normal time.

As with all other GregTech Multiblock Machines: Do not build a Multiblock over chunk borders. This can lead to unpredictable behavior, including wasted fuel and steam and easily including explosions due to loss of water. With NEI installed, chunk borders can be checked by pressing F9 (by default).

Before using Large Boiler the first time, maintenance must be performed at the Maintenance Hatch.

To enable/disable a Boiler, hit it with a Soft Hammer.

Fuel Efficiency[edit | edit source]

Large Boilers produce Steam at tremendous rates, and consume fuel at appropriately similar rates. As a point of reference, Large Boilers consume 1 Charcoal every second.

Boiler Heating Time Steam per Charcoal Charcoal used during Heating Steam produced during Heating
Large Bronze Boiler 31.25s 16,000 32 253,700
Large Steel Boiler 62.5s 24,000 63
Large Titanium Boiler 93.75s 32,000 94
Large Tungstensteel Boiler 125s 40,000 125 1,669,700

Steam Produced During Heating' figures apply to all Large Boiler fuels except for Diesel, Ethanol, and Nitro-Diesel (the Diesel Generator fuels).

The important thing to note from this chart is the Steam per Charcoal efficiency, notably of the Large Bronze Boiler, especially when compared to the High Pressure Coal Boiler.

[W]hen the boiler is at max temperature, a lump of charcoal will last 160 seconds, equating to 48,000 Liters of steam.
High Pressure Coal Boiler

Therefore, when compared with the High Pressure Coal Boiler, the Large Bronze Boiler:

  • Consumes fuel 160x as quickly
  • Produces Steam 53x as quickly
  • Has 67% lower fuel efficiency

The Large Boiler is an excellent way of producing large quantities of Steam with which to power a factory, but it cannot hold a candle to the High Pressure Coal Boiler if fuel consumption is a major concern.


Fuel Efficiency (5.09)[edit | edit source]

In GregTech 5 Unofficial Experimental version 5.09.00, Large Boiler efficiency was increased across the board.

Bronze 2.0x 16.000->32.000 (Steam per Charcoal) Steel 1.5x 24.000->36.000 Titanium 1.3x 32.000->41.600 TSteel 1.2x 40.000->48.000
GregTech 5 Unofficial/Experimental Changelog#5.09.00

In table form,

Boiler Burn Time per Second Old Steam per Charcoal New Steam per Charcoal
Large Bronze Boiler 2.0 16,000 32,000
Large Steel Boiler 1.5 24,000 36,000
Large Titanium Boiler 1.3 32,000 41,600
Large Tungstensteel Boiler 1.2 40,000 48,000

This means that as of the newer versions, a Large Bronze Boiler is as fuel efficient as a Large Titanium Boiler was previously, and a Large Tungstensteel Boiler is as fuel efficient as a High Pressure Coal Boiler. This makes large-scale Steam production much more practical in the mid-game, and makes the Large Turbine a more viable source of energy.

New fuel efficiency of boilers compared to the High Pressure Coal Boiler:

Boiler Fuel consuming Steam producing Lost efficiency
Large Bronze Boiler 80x 53x 34%
Large Steel Boiler 107x 80x 25%
Large Titanium Boiler 123x 107x 13%
Large Tungstensteel Boiler 133x 133x 0%
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