[1] Documentation of the effects of clouds on the radiant energy balance of the surface and atmosphere represents a shortcoming in the set of observations that are needed to ascertain the validity of climate model simulations. While clouds are known to cool the climate system from top of atmosphere (TOA) radiation budget studies, the redistribution of energy between the surface and atmosphere a...

Background and Objectives: In the most Iranian hospitals the internal air is cooled by a system comprising centrifugal blower fan and excelsior filters. Because amoeba can be present in air and dust it may enter into filters of cooling systems. It has been suggested that diffusion of amoebae cyst through air canals may contribute to various types of nosocomial infections. This ...

In recent years, an increasing number of offices have actively harvested daylight for the well-being occupants. However, if large windows are provided harvesting, amount solar heat gain increases, leading to poor energy efficiency and deteriorated indoor environment. Therefore, objective this study was verify radiant cooling effect ceiling slits in office building based on thermally activated s...

Taking a typical two-person office as the research object, indoor thermal comfort of radiant cooling-displacement ventilation air-conditioning, cooling-personalized air-supply and all-air air-conditioning were simulated studied, index properties was analyzed. It found that personnel activity area with had lowest air supply temperature, PMV PPD, speed met requirements. The effect human body is s...

Split air-conditioners have deficiency in thermal comfort due to draught sensation and fan noise. The existing radiant cooling systems adopt chilled water as circulating medium, resulting low energy efficiency because of the requirement secondary heat exchange. To address these problems, a novel refrigerant-direct (RDRC) system is proposed. Experiments are conducted climate chamber evaluate per...

Air pre-cooling equipment is normally being employed in air-conditioning systems for pre-cooling the ambient outdoor air to enhance the air-conditioning systems performance. In this study, the potential of a passive water-to-air heat pipe based heat exchanger (HPHEX) for air pre-cooling purpose in air-conditioning systems for the high cooling load demanding regions of Iran was investigated. To ...

A web-based Roof Savings Calculator (RSC) has been deployed for the United States Department of Energy as an industry-consensus tool to help building owners, manufacturers, distributors, contractors and researchers easily run complex roof and attic simulations. This tool employs modern web technologies, usability design, and national average defaults as an interface to annual simulations of hou...