background: today discussion thermal comfort due to technology advances and equipment application in the workplace for government and non-governmental organizations managers in the industrial and non-industrial environments, especially hospitals staff   due to the diversity of people employed and the type of work they are doing of particular importance. this study was conducted to evaluate the ...

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In this study, the air-side pressure drop and heat transfer performance of plate-fin and microchannel coils were tested under clean and fouled conditions. The heat exchangers were tested with two different types of dust, ASHRAE Standard Dust and Arizona Road Test Dust. The ASHRAE dust was found to have a very significant impact on the pressure drop of the microchannel heat exchanger, increasing...

It is well known that residential and commercial buildings account for about 40% of the overall energy consumed in the United States, and about the same percentage of CO2 emissions. Retrofitting existing old buildings, which account for 99% of the building stock, represents the best opportunity of achieving challenging energy and emission reduction targets. United Technologies Research Center (...

The role of ventilation in the housing stock is to provide fresh air and to dilute internally-generated pollutants in order to assure adequate indoor air quality. Energy is required to provide this ventilation service, either directly for moving the air or indirectly for conditioning the outdoor air for thermal comfort. Different kinds of ventilation systems have different energy requirements. ...

The lack of a standard is a major limitation to the widespread use of a facility. Therefore the Object Database Management Group (ODMG) presented a standard for object-oriented databases [Cat96], which includes an object model, using the OMG Object model as the basis, an object definition language (ODL), an object query language (OQL), and the definition of a C++ and a Smalltalk binding. Curren...

Solar passive techniques are being used in vernacular buildings throughout the world. Researchers have done extensive study on thermal performance of vernacular buildings in the different parts of the world. Vernacular architecture of North-Eastern India represents the principle of climate-responsive architecture, which still lacks experimental validation and quantitative analysis. Thermal comf...

A set of enhancements to the ASHRAE Handbook [1] are presented to demonstrate the effectiveness of multimedia and advanced presentation techniques such as 3D computer graphics, visualization and animation techniques. These results can also serve as a model and guide for the broader use of these techniques in other ASHRAE publications. 1 General Introduction to Project In this paper, we present ...

Covalently functionalized carbon nanoplatelets and non-covalent metal oxides nanoparticles (surfactant-treated) have been used to synthesize water-based nanofluids in this paper. To prove nanofluid stability, ultraviolet–visible (UV–vis) spectroscopy is used, the results show that stable for sixty days thirty oxides. The thermophysical properties are evaluated experimentally validated with theo...