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Handbook of Energy by Christopher G. Morris, Cutler J. Cleveland

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Section 25

Lighting/HVAC/Refrigeration

Charts

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Chart 25.1 Trends in luminous efficacy for various lighting technologies. Luminous efficacy is measured in units of lumens (lm), a measure of light that factors in the human visual response to various wavelengths, per watt (W). The red, green, blue and white curves represent their respective solid-state lighting, light-emitting diodes (SSL-LED). HID=high intensity discharge. Source: Data from Tsao, Jeff T. 2004. Solid State Lighting, IEEE Circuits and Devices Magazine, May/June, pages 28-37.

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Chart 25.2 ...

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