def

substance

Matter in one the three states solid, liquid, or gas

meta

supertypes

marker

Marker labels a dict with typing information

    phenomenon

Aspect of scientific interest with measurable quantities

subtypes

fluid

Liquid or gas

    gas

Substance with neither definite volume nor shape

        air

The mixture of gases which surrounds the earth

        naturalGas

Fossil fuel energy source consisting largely of methane and other hydrocarbons

        steam

Water in its gas form

    liquid

Substance with definite volume but takes the shape of its container

        condensate

Liquid phase produced by the condensation of steam or other gas

        fuelOil

Petroleum based oil burned for energy

        gasoline

Petroleum derived liquid used as a fuel source

        water

Water in its liquid form

            blowdown-water

Water expelled from a system to remove mineral build up

            chilled-water

Water used for HVAC cooling

            condenser-water

Water used used to remove heat through condensation

            domestic-water

Tap water for drinking, washing, cooking, and flushing of toliets

            hot-water

Hot water used for HVAC heating or supply to hot taps

            makeup-water

Water used used to makeup water loss through leaks, evaporation, or blowdown

    refrig

Fluid used in refrigeration and heat exchange

solid

Substance with definite shape and volume

    ice

Water in its solid form

quantities

temp

Temperature - measure of hot and cold

volume

Three dimensional space occupied by a substance