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El análisis del sistema Daylight se realizó identificando tecnologías eficientes para canalizar la luz natural en áreas que dependan de la iluminación. Este análisis se basó en los datos de radiación solar total en los últimos cuatros años en el departamento de Lambayeque. Se utilizó fórmulas matemáticas que parten de las magnitudes de radiometría y fotometría para determinar valores de lumen por metro cuadrado correspondiente a la luz natural. Para el análisis de los valores obtenidos se trabajó en una plantilla de Microsoft Excel, los cuales se compararon con las normas técnicas de iluminación determinando el tipo de tecnología que más se adapta a las condiciones del área a iluminar. De esta manera, el sistema Daylight en los cuatro tipos de sistema tiene una eficiencia teórica en más del 80% para canalizar la luz del medio, demostrando ser eficientes en la variación de captación de luz de acuerdo al diámetro y longitud de los tubos solares y la ubicación geográfica. Al utilizar este tipo de sistemas se desarrollará tecnologías que ahorren energía de forma económica y respetuosa con el medio ambiente de las fuentes alternativas como es la iluminación natural, reduciendo costos de tarifa eléctrica y minimizando la dependencia energética de los combustibles fósiles como el petróleo, carbón, diesel, gas y de las hidroeléctricas, llevándonos a mejorar la eficiencia energética.

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Climate is a major determinant in building design. There has been a long standing need by designers and architects, as well as engineers, in Saudi Arabia for easy access to hourly climatic data. Such data are essential for many passive and active solar applications, including the simulation of the energy performance of building designs. A major contribution of the present study lies in the development of a Reference Year representative of the climate in Saudi Arabia. This reference year compensates the scarcity and inadequate climatic data presently published in Saudi Arabia. It also provides substantial data base of climatic variable for use in simulation programs, not only for Saudi Arabia, but also for similar hot-arid regions. The present study also bridges the gap, currently observed in literature and research, concerning the energy performance of internal shading devices. These devices, and in particular curtains and blinds, are quite common features in our living spaces. T he effects such devices have on the energy balance of indoor spaces and the comfort of occupants, can be assessed by the simplified design tools developed in the present study. The characteristics of two samples (a domestic curtain and a low-e coated blind) have been measured using outdoor test rooms at the "Passys" test site. Results have indicated that the blind is more effective than the domestic curtain. The blind can reduce the transmission coefficient of double glazed fenestration by 11%, and can reduce the solar heat gain factor by 34%. In comparison, the curtain reduces the fenestration heat transmission coefficient and solar heat gain factor by 8% and 29% respectively. Results from the simulation programs "ESP" and "Curtain" have been compared with measured parameters. The analysis have provided confidence in such tools. This thesis has been structured to be of value to architects. The effort put forward in the layout and presentation of the thesis provide a readable and easy to understand research material. The reviews, results, and analysis covered in this thesis would be useful for further research.