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# Factorio Runtime Docs Version 2.0.7

## Class LuaFluidPrototype extends LuaPrototypeBase changed

Prototype of a fluid.

## Members

default_temperature | :: R double | Default temperature of this fluid.
Default temperature of this fluid.
max_temperature | :: R double | Maximum temperature this fluid can reach.
Maximum temperature this fluid can reach.
heat_capacity | :: R double | The amount of energy in Joules required to heat one unit of this fluid by 1°C.
The amount of energy in Joules required to heat one unit of this fluid by 1°C.
base_color | :: R Color |
flow_color | :: R Color |
gas_temperature | :: R double | The temperature above which this fluid will be shown as gaseous inside tanks and pipes.
The temperature above which this fluid will be shown as gaseous inside tanks and pipes.
emissions_multiplier | :: R double | A multiplier on the amount of emissions produced when this fluid is burnt in a generator. [...]
A multiplier on the amount of emissions produced when this fluid is burnt in a generator. [...]
fuel_value | :: R double | The amount of energy in Joules one unit of this fluid will produce when burnt in a generator. [...]
The amount of energy in Joules one unit of this fluid will produce when burnt in a generator. [...]
valid | :: R boolean | Is this object valid? [...]
Is this object valid? [...]
object_name | :: R string | The class name of this object. [...]
The class name of this object. [...]

Inherited from LuaPrototypeBase

type | :: R string | Type of this prototype.
Type of this prototype.
name | :: R string | Name of this prototype.
Name of this prototype.
order | :: R string | The string used to alphabetically sort these prototypes. [...]
The string used to alphabetically sort these prototypes. [...]
localised_name | :: R LocalisedString |
localised_description | :: R LocalisedString |
group | :: R LuaGroup | Group of this prototype.
Group of this prototype.
subgroup | :: R LuaGroup | Subgroup of this prototype.
Subgroup of this prototype.
hidden | :: R boolean |
hidden_in_factoriopedia | :: R boolean |
parameter | :: R boolean |

## Attributes

### default_temperature :: Read double

Default temperature of this fluid.

### max_temperature :: Read double

Maximum temperature this fluid can reach.

### heat_capacity :: Read double

The amount of energy in Joules required to heat one unit of this fluid by 1°C.

### base_color :: Read Color

### flow_color :: Read Color

### gas_temperature :: Read double

The temperature above which this fluid will be shown as gaseous inside tanks and pipes.

### emissions_multiplier :: Read double

A multiplier on the amount of emissions produced when this fluid is burnt in a generator. A value above `1.0` increases emissions and vice versa. The multiplier can't be negative.

### fuel_value :: Read double

The amount of energy in Joules one unit of this fluid will produce when burnt in a generator. A value of `0` means this fluid can't be used for energy generation. The value can't be negative.

### valid :: Read boolean

Is this object valid? This Lua object holds a reference to an object within the game engine. It is possible that the game-engine object is removed whilst a mod still holds the corresponding Lua object. If that happens, the object becomes invalid, i.e. this attribute will be `false`. Mods are advised to check for object validity if any change to the game state might have occurred between the creation of the Lua object and its access.

### object_name :: Read string

The class name of this object. Available even when `valid` is false. For LuaStruct objects it may also be suffixed with a dotted path to a member of the struct.