The aim of this study is to determine optimum hybrid heating systems parameters, such as temperature, surface area of a radiant heater and vent area to have thermal comfort conditions. DOE, Factorial design method is used to determine the optimum values for input parameters. A 3D model of a virtual standing thermal manikin with real dimensions is considered in this study. Continuity, momentum, ...

Thermal comfort studies have been developed all around the world by many authors and some adaptive comfort models have been proved specifically for warm climates. An educational software developed some years ago for temperate climate, ACT (Program for the Evaluation of Thermal Comfort), by Isalgué and Serra, has been proved and used successfully by students in the Mediterranean climate of Barce...

Underground railway systems, can generate heat from their operations to raise the temperatures of carriages and the station substantially. This may lead to passenger discomfort and complain especially in warm weather conditions that prevail in Tehran if underground environment is not cooled. Transportation air conditioning Committee of American Society of Heating, Refrigerating and air-conditio...

Attractive public open spaces can serve as key design elements for enhancing life quality in urban areas and to diminish the negative effects of urbanisation. In order to fulfil this task, open spaces must meet the expectation of potential users and offer the right mix of environmental, economic and social conditions. It is well known that the local microclimate belongs to the main factors driv...

The Universal Thermal Climate Index UTCI assesses the interaction of ambient temperature, wind, humidity and radiant fluxes on human physiology in outdoor environments on an equivalent temperature scale. It is based on the UTCI-Fiala model of human thermoregulation and thus also allows for thermal comfort prediction. Comparing UTCI predictions to thermal sensation votes recorded on the 7-unit A...

Localized HVAC systems with the task-ambient conditioning concept represent a promising option towards energy-saving in buildings. The design of such systems needs to involve evaluation of the local thermal comfort that corresponds to different body segments. In this work, an experimental technique using a thermal manikin was developed to determine the optimum configuration(s) among different v...