- Part L
- (UK) Section of Building Regulations dealing with conservation
of fuel and power. Read article by
- Performance deficit
- The excess quantity of excess consumed in a given period, relative
to what would have been required if the building or process in
question had been operated at best achievable efficiency
- Performance indicator, energy
- Usually a single numerical value intended to convey how energy-efficient
a process or building is in operation. The attributes of a well-chosen
energy performance indicator (EnPI) are that (a) it only changes when
something is done which alters energy performance; (b) it changes by an
amount consistent with the change in energy performance and in
a consistent direction; and (c) it is immune to
changes in factors (weather, production, etc) which are known to
cause changes in consumption. These requirements are met for example
by the Energy performance coefficient (formerly
"Energy Intensity Coefficient").
- Plug-in small appliance meters
- Power factor
- Ratio, between 0 and 1, between the real power delivered
in an AC circuit and the power which would be delivered if
current and voltage were in phase.
here for a
suggested training aid.
- Strictly, the rate of generation delivery or conversion
of energy and expressed in kilowatts, horsepower, etc.
for an on-line tool for estimating power requirement by step test.
- Price, energy
- Follow this link for
UK Goverment quarterly energy price bulletins which includes comparisons of fuel prices in the EU and G7 countries
- Profile logger
- Instrument for recording variations in power consumption over the course
of one or more days, for instance at 30-minute intervals
- Photovoltaic; generating electricity directly from light, usually sunshine.