Bioclimatic approach gives attention to the design of roof since it is commonly the building element which is most exposed. Some of the most favorable roof coolingtechniques are roof ponds which appear to influence the thermal behavior of roof through different processes including evaporation, radiation and conduction.

In this study, high-spatial resolution multispectral satelliteimages collected over the metropolitan Athens area in Greece are used to generate a) a broadband albedo map depicting the albedo spatial variations across the metropolitan area, b) a vegetation cover map showingthe spatial distribution of urban vegetation and c) a daytime and night-time surface temperature map depictingthe spatial variations of the surface temperature across the city.

Psychometric diagram, or diagram of humid air, was establishedby three authors in a period of 10 years, very possible independent from one another. It is interesting how three men got the same idea in three very different locations of the globe, at a time when there were no radios,good phones or electronic connections. It was difficulttime for close dialogs and exchange of informationbut still it happened that three men, nearly in same time have done the same contribution to science and art of HVAC&R.

Different types of thermal activation of building structuresare increasingly utilized in buildings including BIPV, multifunctional PV facades with controllable daylight/solar gain features and integrating thermal and electrical output.

The relation between skins as metabolisers and the innercontent of different bodies will be discussed.Examples from the world of plants will illustrate how plants respond to their fixed environment and their fixed supply of water and nutrients.Examples from the world of animals will illustrate that even though animals are mobile they respond in general classification terms to their natural habitat.The tremendous versatility of the skin of the human beingwill be presented.The response of different skins to seasonal adaptation and the element of time will be discussed.The above will be correl

New solar energy systems with efficient energy output and advanced aesthetics have been developed at the University of Patras last 20 years. Among them some collector types are effective in aesthetics and energy output, as the solar collectors with colored absorbers and the stationary CPC type collectors. The building integration of air cooled photovoltaics aiming to contribute to building ventilation and of hybrid photovoltaic/thermal (PV/T) systems, to provide heat and electricity, are solar devices of particular practical value.

This paper will describe how the urban projects or the new master plans must consider the environmental impactof the proposed intervention and minimise them through a sustainable planning. The Nicosias bi-communalmaster plan project has as development objective the improvement of the existing habitat and the human settlement conditions with a preservation and rehabilitationpolicy in particular way for the walled city (historicalcentre) that is almost abandoned since the Turkishinvasion of 1974.

Real-time control of comfort in indoor spaces needs models of temperature distribution and air-velocity velocityfield. Complete models, based on CFD, give this information but are improper for real-time calculations. Therefore, a reduced model is needed. This study proposesto reduce the dimension of a CFD model by first considering the velocity field fixed and solving only the energy balance equation, then putting this equation in the form of state-space and finally by reducing its orderby Proper Orthogonal Decomposition (POD).

The requirements for good indoor air quality and energyefficiency have often been considered to conflict with each other, however, buildings with low energy consumption in Europe seem to have also a lower rate of building related health symptoms. This indicates the importance of proper design, installation and qualified, well trained operational personnel, who understands both the requirements for good indoor air quality and energy efficiency.

This presentation projects the potential of mass interwovenwith other aspects of Bioclimatic Design, with the objective of energy conservation and utilization of renewable energy resources for indoor comfort.The variable of mass and its effect on other variables and parameters in building simulations are outlined and discussed.