It’s reported that PhotonStar LED Ltd, a UK-based designer and manufacturer of solid state lighting (SSL) luminaires, has increased the efficiency of its next-generation CeilingStar5 downlighter to 70 luminaire lumens per circuit watt, and has set new standards in the efficiency of commercial downlighters by achieving more than 56 lumens per circuit watt for the next generation of its CeilingStar5 SuperBright when driven at 700mA.
The next generation CeilingStar5 produces more than 455 lumens with a circuit power consumption of 7.9 W. The CeilingStar5 SuperBright unit itself consumes just 6.7W, the CeilingStar5 achieves 56 luminaire lumens per circuit watt at temperature, in situ. The CeilingStar5 is available as standard in warm white (3000K) and neutral white (4000K). When this 7-LED module based CeilingStar5 is driven at 350mA the unit has a total wall plug of efficiency of over 70 luminaire lumens per circuit watt, producing 260 lm at a total power consumption of just 3.7W. An "entry level" CeilingStar5 Bright luminaire with 4 LEDs provides 280 lm performance at 53 luminaire lumens per circuit watt. This new CeilingStar5 SuperBright is available from the 8/8/08 and exceeds the proposed UK government Enhanced Capital Allowance criteria for LED luminaires by 20%. It also exceeds the UK building Regulations Energy Efficiency Regulations and counts as a dedicated fitting under these regulations.
As a result it also exceeds the criteria set in the code for sustainable homes for dedicated low energy fittings. Installing a CeilingStar5 SuperBright instead of a 35 W MR16 or GU10 fitting will save over GBP135 in energy costs alone. In a new build with the fitting in constant use, the payback period is less than 1 year.
