If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -The purpose of this study was to examine lighting systems at 77 laboratories located within one building to save energy and associated costs. Design/methodology/approach -Field measurements of illumination were conducted and compared to lighting standards and industry recommendations. Findings -For energy and cost saving, de-lamping all four-lamp luminaires down to two-lamp luminaires and installing occupancy sensors in all laboratories were recommended. Research limitations/implications -The research team's project working hours and study period were limited. This study begins to fill the gap in the literature regarding lighting field studies. Practical implications -By carefully considering light level recommendations, industry standards and installation budgets, existing facilities can install appropriate retrofits to save energy and money without sacrificing illumination levels. Recommended retrofits are anticipated to significantly curtail annual federal energy consumption practices at the labs. Social implications -The retrofits recommended in this study will reduce US federal government's energy-related expenditures and greenhouse gas emissions in support of the 2010 Presidential Mandate. The proposed occupancy sensors are anticipated to compensate for humans' failure to manually control lighting. Originality/value -This field study adds value by documenting cost-effective methods to measure, record and manage laboratory lighting, and it calls for the implementation of social, economic and ecological interventions. The recommended retrofits will reduce US federal government's energy-related expenditures and greenhouse gas emissions in support of the 2010 Presidential Mandate.

The purpose of this study was to examine lighting system energy and cost savings at an existing U.S. Government facility's cafeteria. The objectives of the study included (1) investigating and documenting existing lighting systems and measuring lighting levels, (2) comparing findings to the industry lighting standards, and (3) making lighting recommendation for energy and cost savings. Lighting examinations and field measurements were conducted at an existing Midwestern U.S. Government facility's cafeteria built in 1976 and currently in operation. Four spaces: the dining room, checkout line, buffet and kitchen were included for this study. The light levels in the two measured areas which had both electric light and daylight contributions, the checkout line and dining room, exceeded the industry recommendations for lighting levels. The other two areas, the buffet and kitchen, were illuminated by electric light only and exhibited no daylight contributions. The average light levels in the buffet area, one of the two measured areas which had electric light only, exceeded the industry recommendations for lighting levels. For energy and cost saving, de-lamping all six-lamp luminaires down to three lamps in the dining room, replacing lamps in the checkout line and installing occupancy sensors for all four areas were recommended. The cost savings were calculated. If existing lighting can be updated in an energy and cost saving manner, cafeteria lighting might be made appropriate through renovation, thus extending the life of this and other existing workplace cafeterias.

Purpose The purpose of this study was to investigate and document existing lighting systems and lighting levels, to compare findings to the Illuminating Engineering Society (IES) lighting standards (Rodgers, 1998) and to make lighting recommendation for energy and cost savings. Design/methodology/approach Lighting examinations and field measurements were conducted at a large, existing Midwestern institutional food-service facility that has been continuously operational since 1976. Lighting levels of the dining room, checkout line, buffet, kitchen, storage room and conference room were measured and then compared to the IES lighting standards. Recommendations were then made for energy and cost savings. Findings The average light levels in the dining room, checkout line, buffet, storage room and conference room exceeded the industry-recommended light levels. The energy and cost savings were calculated for this study, and the energy- and cost-saving strategies recommended included delamping, replacing lamps and luminaires and installing occupancy sensors. If existing lighting can be updated in an energy- and cost-saving manner, institutional food-service facilities might be made appropriate through renovation, thus extending the life of these facilities. Practical implications This study has practical implications for the many existing institutional food service facilities in workplaces across the USA that could save energy and costs through renovated lighting systems. Originality/value This research constitutes an in situ case study, which gathered empirical lighting data at an existing institutional food-service facility and made recommendations for lighting renovations. Although lighting systems influence dining and kitchen environments, lighting has not always been fully considered in institutional food-service facilities.