Energy Research & Testing Laboratory Services
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Energy Research & Testing Laboratory Services
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FREQUENTLY ASKED QUESTIONS (FAQs)
An energy label is an informative label that is affixed to a manufactured product and describe a product’s energy performance (usually in the form of energy use, efficiency, or energy cost) to provide consumers with data necessary for making informed purchase
The term “standards” commonly compasses two possible meanings: 1. well-defined protocols (or laboratory test procedures) by which to obtain a sufficiently accurate estimate of the energy performance of a product in the way it is typically used, or at least relative ranking of its energy performance compared to other models. 2. target limits on energy performance (usually maximum use or minimum efficiency) based upon a specified protocol (McMahon and Turiel 1997).
The Energy Efficiency Ratio (EER) of the unit is tested and certified by an independent appliance testing laboratory. It is derived from the following formula: EER = cooling capacity/ power consumption.
The box contains a number that indicates the efficiency of the model certified by an independent testing laboratory.
The rate at which light is emitted by a lamp or light source expressed in lumens.
The time rate at which electric energy is used by the lamp/ballast combination expressed in watts.
A measure to compare light output to energy input; the quotient of the total luminous emitted divided by the total lamp power input. It is expressed in lumens per watt.
The expected time in hours, at which half of a large group of lamps have failed under standard test conditions.
Indicates the maximum loss that the ballast would consume. Lower ballast loss means lower power consumption.
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