Geothermal

Geothermal

Geothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior. Away from tectonic plate boundaries, it is 22.1°C per km of depth (1°F per 70 feet of depth) in most of the world. Strictly speaking, geo-thermal necessarily refers to the Earth but the concept may be applied to other planets.

Industry: Energy

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Geothermal

heat exchanger

Energy; Geothermal

Device used to transfer heat between liquids.

heat flow

Energy; Geothermal

When internal heat from within the Earth moves toward or to the surface.

hot dry rock

Energy; Geothermal

Geological formations of very high temperature rocks found kilometers below the ground. Also known as HDR.

hydrothermal resource

Energy; Geothermal

Underground sources of hot water and/or steam

injection

Energy; Geothermal

Process of returning geothermal fluids, after being utilized to generate heat, back into the ground.

permeability

Energy; Geothermal

Measure the ability to transmit a fluid through a designated material or formation.

chloride springs

Energy; Geothermal

One of two types of categories that geothermal springs can be categorized in, depending on the temperature and composition of the water; chloride springs produce hot, sometimes boiling, water that is ...