In cold climates, south-facing windows can be designed with overhangs that allow light and warmth to enter a space when the weather is cold yet shade the windows when the weather is hot. Double-glazed windows with thermal breaks are a good investment in all but the most temperate of climates. In instances where it may not be feasible to have windows, skylights provide an excellent alternative. Although the first-cost of skylights may be high, that cost should be compared against the cost of windows. Further, the payback does not include savings from reduced HVAC sizing and solar loads.
Skylights provide outstanding color rendering and high levels of illumination.
The cost of providing 150-200 fc with electric lighting would be prohibitive. When it comes to lighting selections and costs, there is no standard answer. This becomes a particularly difficult job when you go beyond mere cost comparisons to address such necessary yet subjective issues as comfort and quality. This article only begins to scratch the surface by addressing some of the most common equipment used in schools, helping you to learn more about your potential lighting options. A lighting designer should be consulted to ensure that your decisions are, in fact, the best for your particular project.