Low energy lighting for Royal Free Hospital

An innovative lighting solution, using low energy lighting from Holophane, is helping the Royal Free Hospital in London to reduce energy consumption, carbon emissions and maintenance costs. 

The project involved a major refurbishment of the hospital’s entrance building and included extensive LED lighting from Holophane, along with the company’s Atlanta luminaires using compact fluorescent light sources. 

A key element of Holophane being specified for the project was the company’s ability to provide accurate photometry for its LED fittings. 

The ‘Royal Free’, one of London’s highest profile hospitals, is operated by the Royal Free Hampstead Trust and is strongly committed to reducing its carbon footprint and environmental impact. In refurbishing the front entrance and reception area, therefore, great emphasis was placed on sustainability as well as creating a welcoming area for patients and visitors. 

The area leading to the hospital entrance comprises a circular canopy, low canopy and high canopy. The lighting solution for these areas, designed by The Richard Stevens Partnership, includes Holophane’s LLED (Linear LED) fittings, using Luxeon high power LED light sources from Lumileds. 

Because of their superior light output and lumen maintenance, compared to traditional 5mm LEDs, this solution enabled required lighting levels and distribution to be met with a minimum number of luminaires. Each LLED fitting comprises 12 x 1.2W LEDs with a colour temperature of 5000K and 6 degree beam angle. 

Another major benefit of the LLED fittings is that they have a low lens temperature, making them suitable for use in public areas where there is a possibility of people touching them. They are also very versatile, offering a wide range of installation options, including ground-recessed, wall-recessed and stirrup-mounted. 

In addition, the LED lighting in the lower canopy is supplemented by Atlanta circular, low profile luminaires using 2 x 55W compact fluorescent lamps. The precisely engineered prismatic refractive lenses used in Atlanta fittings ensure maximum efficiency and optimum light distribution, enabling wide spacing so that fewer luminaires are required compared to standard fittings. 

Atlanta’s combination of form and function makes them ideal for this type of area, providing an elegant solution during the daytime and at night. They are also very robust with ingress protection to IP65 to withstand challenging weather conditions. 

Holophane has also supplied colour changing LED fittings to enable the hospital to alter the ambience of the entrance area when required. 

The lighting solution supplied to the Royal Free has not only helped to transform the hospital’s entrance area, it has also enabled a reduction in energy consumption and carbon emissions, as well as reduced maintenance costs due to the long life of the LED lighting.

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October 2011

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