def

refrig

Fluid used in refrigeration and heat exchange. Refrigerants typically alternate between liquid and gas state.

meta

supertypes

marker

Marker labels a dict with typing information

    phenomenon

Aspect of scientific interest with measurable quantities

        substance

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

            fluid

Liquid or gas

quantities

concentration

Abundance of substance in the total volume of a mixture

flow

Measure of volumetric flow of fluid

level

Range from 0% to 100%

pressure

Measure of force applied

temp

Temperature - measure of hot and cold

volume

Three dimensional space occupied by a substance