We offer some remarks on the greenhouse effect due to high clouds which reflect thermal infrared radiation, but do not absorb or emit it. Such clouds are an idealization of the CO2-ice clouds which are thought to have existed early in the history of Mars. Clouds of this type enter also in the ability of the Earth to recover from a globally glaciated "cold start," and in the determination of hab...

The potential role of solar variations in modulating recent climate has been debated for many decades and recent papers suggest that solar forcing may be less than previously believed. Because solar variability before the satellite period must be scaled from proxy data, large uncertainty exists about phase and magnitude of the forcing. We used a coupled climate system model to determine whether...

Passive solar heating is presently a major concern of Romania groups working on building research and design. The first theoretical and experimental research studies were worked out in INCERC and used the following experimental bases: the INCERC 1 solar cabin (1974), the Campina solar houses (1976, 1977), the solar apartment buildings in Medgidia (1981) and CS 3 Bucharest solar house at INCERC ...

In the present paper, the distribution of solar energy inside the uneven span solarium has been determined in terms of solar fraction on north partition wall by using Auto-CAD 2000 for New Delhi (28.5° latitude). This enables the prediction of its performance for passive heating. The concept has been extended to other shapes of greenhouses for cultivation of flowers during off-season. The other...

Chinese solar greenhouses (CSGs) are characterized by unique walls to reduce the transmission of heat and promote energy conservation in winter production, which promotes cultivation northeast region China winter. Effective selection insulation material is important for CSG based on consumption economic analysis. However, choosing thickness often discussed with structure CSG. There a lack resea...

A numerical investigation of a solar greenhouse tunnel drier (SGTD) has been performed. In the present study, the geometry of the tunnel roof is assumed semi-circular which is covered with a UV (200μ) stabilized polyethylene film. The simulated SGTD reduces moisture of copra from 52.2% to 8% in 55 h under full load conditions. A system of partial differential equations describing heat and moist...