5.2

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Energy Efficiency
Sadia M
Flashcards by Sadia M, updated more than 1 year ago
Sadia M
Created by Sadia M almost 7 years ago
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Energy efficiency
What is the efficiency? Efficiency is a measure of how much work or energy is conserved in a process.
wasted energy A wasted energy is an energy which is transformed without significant use.
Energy efficiency It is a measure of how much input energy is converted into useful output energy.
what is an energy rating label? It is a label affixed to various appliances prior to retail sale, which allows consumers to compare the energy efficiency of product and allows consumers to know how much power a particular model will use to run.
what is kW? kilowatt duhh
The energy rating label was first used in... new south wales and Victoria
efficient housing? A 5-Star rated building. It has a high level of thermal energy performance, and will require minimum levels of heating and cooling to be comfortable in winter and summer.
Insulation Insulation is the process of keeping heat, sound, or electricity from spreading.
The energy that is normally wasted is... Heat energy
LED LED lights are the latest technology in energy efficient lighting. LED stands for 'Light Emitting Diode', a semiconductor device that converts electricity into light.
what is a car radiator? A cooling system works by sending a liquid coolant through passages in the engine block and heads. As the coolant flows through these passages, it picks up heat from the engine. The heated fluid then makes its way through a rubber hose to the radiator in the front of the car.
... bye
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