This paper presents calculations of the social cost of electricity generation from fossil fuels in Greece. The interest of these calculations is that they allow a more realistic comparison between the actual price of electricity and the electricity produced by renewable energy sources, mainly...

The estimation of diffuse irradiance that impinges on a window or photovoltaic panel is of major importance for the determination of their performance. The present paper introduces the concept of angular shading factors (ASF) for the calculation of time-varying diffuse irradiances to be...

This article presents a technique for the design of slat-type blinds based on the their relative light intensity distribution under a uniform light source. The technique offers a new approach using a genetic algorithm in order to evolve the design according to a set of parameters.

Heat island phenomenon rises the temperature of cities, increases the energy demand for cooling and deteriorates comfort conditions in the urban environment. To counterbalance the impact of the phenomenon, important mitigation techniques have been proposed and developed. Pavements present a very...

A new analytical expression for the broadband transmission function corresponding to atmospheric Rayleigh scattering has been developed. This expression is based on the latest known spectral data on Rayleigh scattering as well as on the Neckel and Labs model, incorporating the most recent...

A new analytical expression for the integral transmission function corresponding to the uniformly mixed atmospheric gases (CO2, CO, N2O, CH4 and O2) is proposed for use in solar radiation models. This expression is based on the latest spectral absorption data of the uniformly mixed gases, as...

The present paper aims to present a distant-learning training module that concerns the environmental design of urban buildings. The whole approach attempts to integrate topics that concern the design of urban buildings from various points of views, e.g. active and passive systems, automation...

Ten years' hourly measurements of air and ground temperature values at various depths below bare and short grass soil at Dublin Airport have been used in order to investigate the impact of different ground surface boundary conditions on the efficiency of a single and a multiple parallel...

This paper deals with the experimental investigation and analysis of the energy and environmental performance of a green roof system installed in a nursery school building in Athens. The investigation was implemented in two phases. During the first phase, an experimental investigation of the...

The radiative cooling potential is determined by the ambient temperature, relative humidity, wind velocity, and cloudiness. Previous assessments of the radiative cooling potential in Greece have been based on mean weather data. In this paper, 12 years of hourly weather data are used to assess...