Browsing by Author "Lauret Aguirregabiria, Benito"

The transparent materials used in building envelopes significantly contribute to heating and cooling loads of a building. The use of transparent materials requires to solve issues regarding heat gain, heat loss, and daylight. Water flow glazing (WFG), a disruptive technology, includes glazing as part of the Heating, Ventilation and Air Conditioning (HVAC) system. Water is transparent to visible wavelengths, but it captures most of the infrared solar radiation. As an alternative to fossil fuel-based HVAC systems, the absorbed energy can be transferred to the ground through borehole heat exchangers and dissipated as a means of free-cooling. Researchers of the Polytechnic University of Madrid have developed a software tool to calculate the energy balance while incorporating the dynamic properties of WFG. This article has studied the mathematical model of that tool and validated its ability to predict energy savings in buildings, taking spectral and thermal parameters of glazing catalogs, commercial software, and inputs from the measurements of the prototypes. The results found in this article showed that it is possible to predict the thermal behavior of WFG and the energy savings by comparing the thermal parameters of two prototypes. The energy absorbed by the water depends on the mass flow rate and the inlet and outlet temperatures.

La arquitectura tradicional es un referente útil en el planteamiento de estrategias pasivas de acondicionamiento higrotérmico y el empleo de los materiales. El presente artículo describe el funcionamiento bioclimático de cuatro tipologías de la arquitectura tradicional vietnamita de las etnias: É-De, Bahnar, Tay y Cham. La doble cubierta del Than Lâm Cham es uno de los casos más singulares de aislamiento frente a la radiación infrarroja. A pesar de sus diferencias formales, los ejemplos analizados coinciden en la protección solar, la elevación sobre el terreno y la ventilación natural como principales estrategias de acondicionamiento.