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absorption cooler

absorption cooler   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

An air-source *heat pump (ASHP) that uses heat rather than electricity to drive it. In a water and lithium

acid rain

acid rain   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Rain containing high levels of sulphuric and nitric acid, caused by sulphur dioxide and nitric oxides, which are emitted in

adaptation

adaptation   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The actions taken to reduce the adverse effects of *climate change. Examples of adaptation are raising coastal defences

adiabatic

adiabatic   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Relating to a process in which there is no heat transfer between the system and its surroundings. It is an

air conditioning

air conditioning   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The process of maintaining a space at a desired temperature and humidity. Usually cooling is implied and typically this is

air mass

air mass   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

When the optical path length L through the atmosphere for solar radiation incident at an angle θ N is such

airtightness

airtightness (building)   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Airtightness is measured by the number of air changes per hour (ach) that occur when there is a differential pressure

albedo

albedo   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The fraction of the Sun’s radiation reaching something—for example a cloud, or a whole planet—that is reflected. The Earth’s albedo

algae biofuels

algae biofuels   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Fuels derived from plant oils produced by algae, predominantly microalgae. Microalgae can produce more than 50 per cent of their

alternating current

alternating current   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

An electric current that periodically flows in a conductor in one direction and then in the opposite.

alternative energy

alternative energy   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Energy derived from non-fossil fuel sources. The alternative energy sources include *renewable energy sources and *nuclear energy.

anaerobic digestion

anaerobic digestion   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The decomposition of organic matter by bacteria in the absence of air. Bacteria break down the organic material and produce

anthropogenic climate change

anthropogenic climate change   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Human-induced changes to the climate, notably *global warming, caused by the emission of *greenhouse gases, in

apparent temperature

apparent temperature   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The air temperature at a reference humidity (that which has a dew point of 14°C), which feels as

aquifer

aquifer   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

A layer of porous rock, gravel, or sand—or of a similar composition—containing water (called groundwater). Aquifers close to the surface

atmospheric aerosols

atmospheric aerosols   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Tiny liquid drops or solid particles that are sufficiently small (generally <1 micron) that they remain suspended in the air—conventionally

aviation

aviation   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

Transport by aircraft, predominantly by aeroplanes. In 2010, all forms of transport accounted for 27 per cent of global

baseload

baseload   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The minimum demand from customers during twenty-four hours or some other defined period.

baseload generation

baseload generation   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The electricity generation required to meet the *baseload. Baseload power plants operate whenever available, because they have lower

base temperature

base temperature (building)   Quick reference

A Dictionary of Energy Science

Reference type:
Subject Reference
Current Version:
2017

The value of the external temperature below which a building needs to be heated. For buildings in the UK that

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