- Rationing
- Fuel shortages were a powerful incentive to energy saving in the UK
in the 1940s particularly with economic growth after the war. In this
discussion paper from 2005 Vilnis
Vesma argues that a tapering national cap on the supply of fossil-derived fuel
would still be very effective today in reducing our energy consumption and
emissions.
- Recuperator
- Heat recovery device
- Refrigerant
- Volatile fluid in a chiller circuit which has a low boiling point, enabling it to absorb heat
from air or water by evaporation at low temperatures and release it in a water-or air-cooled condenser.
See this temperature-pressure
conversion table which allows you to deduce refrigerant evaporation and condensing temperatures
from measured pressures for a range of refrigerants.
- Regression
- Statistical technique for estimating the relationship between
energy consumption and one or more
driving factors.
Click here for more
detail.
- RHI
- Renewable Heat Incentive: UK subsidy for the production of heat from
renewable sources such as biomass, biogass, and solar energy
- RO
- Renewables Obligation: support mechanism for renewable
electricity projects in the UK
- ROC
- Renewable Obligation Certificate: tradeable instrument embodying
the 'greenness' of renewable electricity; bought and sold independently
of the electricity to which it relates
- RoI
- Return on Investment: a measure of the financial viability of a project
- RoUL
- Risk of Undetected Loss: method for evaluating the cost-effectiveness
of supplementary metering and associated systems, in which the estimated
consumption quantity in each significant branch of a utility system
is multiplied by a factor representing the long-term likelihood of
unexpected excess consumption.
See
article.