Currently, green rating systems are mainly utilized for correctly sizing mechanical and electrical systems, which have short lifetime expectancies. In these systems, passive solar and bio-climatic architecture, which have long lifetime expectancies, are neglected. Urban rating systems consider buildings and services in addition to neighborhoods and public transportation as integral parts of the...

The solar energy research community has realized the redundancy of image-forming while collecting/ concentrating solar energy with the discovery of the nonimaging type radiation collection mechanism in 1965. Since then, various nonimaging concentration mechanisms have proven their superior collection efficiency over their imaging counter-parts. The feasibility of using nonimaging concentrators ...

Anderson, et al. have recently reported the discovery of an apparent anomalous, weak, long-range acceleration in the Pioneer 10/11 and Ulysses spacecraft. I believe that this result can be explained by non-isotropic radiative cooling of the spacecraft electronics through passive radiators on the spacecraft surface. These radiators are preferentially placed on the anti-solar side of the spacecra...

This paper presents the performance evaluation of a passive solar dryer. The Dryer was designed and constructed at Mechanical Engineering Department Caritas University, Amorji-Nike, Enugu, Nigeria. using locally sourced materials from Ogbete main market, Enugu. Experimentation carried out samples 20mm 40mm sliced cassava chips weighing 46g 80g respectively in month November, 2020.Temperature re...

The main purpose of the passive remote sensing instruments GOME and SCIAMACHY is to determine the amount and distribution of a large number of atmospheric trace constituents by measuring Earthshine radiance. In addition solar observations are performed on a regular time grid which offer the possibility to monitor solar variations. This paper summarises the derivation of a proxy solar activity i...

Assessment of the costs and benefits of dispersal is central to understanding species' life-history strategies as well as explaining and predicting spatial population dynamics in the changing world. While mortality during active movement has received much attention, few have studied the costs of passive movement such as the airborne transport of fungal spores. Here, we examine the potential of ...

An experimental investigation was conducted to study the performance of a novel indirect type free convection solar dryer. The and conventional passive dryer were built. Solar irradiation temperature different locations recorded. air at drying chamber entrance, lower space, upper space temperatures besides thermal efficiency 68, 39, 49 85%, respectively, higher than one.