Concept

Reflective surfaces (climate engineering)

Related publications (79)

Wavelength-tunable UV laser for electron beam generation with low intrinsic emittance

We developed a powerful UV laser at a central wavelength varying from 260-283 nm. The laser system based on a frequency-trippled Ti:sapphire amplifier delivers mJ pulse energy within a duration of 1-10 ps (fwhm) with 1.5 nm spectral width (fwhm). The syste ...

2010

Solidification of Al-4.5 wt pct Cu-Replicated Foams

Andreas Mortensen, Yves Conde

Microcellular Al-4.5 wt pct Cu of 400- or 75-mu m average pore diameter is solidified at cooling rates ranging from -30 K/min to -0.45 K/min (-30 A degrees C/min to -0.45 A degrees C/min). In the 400-mu m pore size samples, the dendritic character is lost, ...

2010

Relationship between high daily erythemal UV doses, total ozone, surface albedo and cloudiness: An analysis of 30 years of data from Switzerland and Austria

This work investigates the occurrence frequency of days with high erythemal UV doses at three stations in Switzerland and Austria (Davos, Hoher Sonnblick and Vienna) for the time period 1974-2003. While several earlier studies have reported on increases in ...

Elsevier2010

Heat Transfer Measurements in a Turbine Cascade: Taking Advantage of the Thermal Bahaviour of a PSP Sensor

Peter Ott, Magnus Jonsson

Film cooling experiments are commonly performed with Pressure Sensitive Paint (PSP). The oxygen sensitive probe molecules allow for measurement of the adiabatic film cooling effectiveness by detecting the concentration of a tracer-gas with different oxygen ...

2010

Nanoporous films with low refractive index for large-surface broad-band anti-reflection coatings

Libero Zuppiroli, Rolando Ferrini, Gaëtan Wicht

Nowadays, nanoporous films are widely employed in biochemical applications or in opto-photonic devices such as displays, solar cells, or light-guiding systems. In particular, the technological feasibility of nanoporous layers with low refractive indices ha ...

Wiley-Blackwell2010

Incorporation of Morphological Properties of Buildings' Descriptors Computed from GIS and LIDAR Data on an Urban Multi-agent Vector Based Geo-simulator

François Golay, Claudio Magalhaes Carneiro, Vitor Silva

In this paper we present an application of GIS and airborne light detection and ranging (LIDAR) data analysis for computation of morphological properties of buildings' descriptors in the context of an urban morphogenesis geo-simulator. The morphological de ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2009

Power Management Extensions for Tagus-SensorNet

Jorge Miguel Dias Almeida Rodrigues Soares

A flexible Wireless Sensor Network platform for easier implementation of diverse applications has been developed and deployed at one of the Instituto Superior Técnico - Technical University of Lisbon (IST-TUL) campus. Since its initial deployment in 2007, ...

2009

Development and application of a numerical simulation system to evaluate the impact of anthropogenic heat fluxes on urban boundary layer climate

Andrea Krpo

Increasing economic development, and growing population, generated during the last decades a very important growth of cities. Urban regions include nowadays more than half of the global population and, by 2030, this proportion is forecasted to increase to ...

EPFL2009

Recent Research on Anidolic Daylighting Systems: Highly Reflective Coating Materials and Chronobiological Properties

Jean-Louis Scartezzini, Mirjam Münch, Friedrich Linhart, Stephen Wittkopf

Making daylight more available in buildings is highly desirable for reasons of energy efficiency, visual comfort, occupant well-being and health. The Anidolic Integrated Ceiling (AIC) is a highly efficient daylighting system, designed to gather and redirec ...

2009

Experimental and Numerical Study of the Thermal Performance of a Film Cooled Turbine Platform

Peter Ott, Magnus Jonsson, Dominique Charbonnier

Detailed surface measurements of the thermal performance of a film cooling system have been performed on the endwall of a nozzle guide vane (NGV) mounted in a linear cascade facility at EPFL. An external cooling scheme including several rows of fan-shaped ...

American Soc Mechanical Engineers, Three Park Avenue, New York, Ny 10016-5990 Usa2009

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