Submitted by Maria.Kapsalaki on Thu, 07/03/2014 - 08:01
The relationship between urban growth and the formation of urban heat islands, i.e. climatic differences between the urban area and adjacent rural areas, is discussed by several authors and is assumed to be ubiquitous for various climatic regions. Curitiba (25.5ºS), located within a region of subtropical climate in elevation, boasts a population growth rate of approximately 2% a year. The purpose of this study is to evaluate the effect of the urban agglomeration on microclimate changes.
Submitted by Maria.Kapsalaki on Thu, 07/03/2014 - 08:00
In order to clarify the outdoor thermal comfort and clothing, the thermal measurements (air temperature) and thermal comfort survey were conducted in Hachiko Square which is located in the Shibuya station, Tokyo. (Hachiko is a famous statue of a dog which is a popular meeting place.) The survey was conducted every two weeks and the number of people investigated was 224. The results showed that the average clothing insulation of the females is greater than that of the men. The clothing insulation is highly correlated with the outdoor air temperature.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:28
Though wider diversities of environmental attributes are intrinsic in water fringed urban parks, these parks are less represented in the previous studies. Thus the study aims to explore the impact of environmental attributes of settings on user perceived controls for enhancing daytime thermal acceptability of water fringed urban parks in Colombo, Sri Lanka. The study investigated seven diversified settings which demonstrate varying shading levels and environmental attributes with visual integration of water surfaces.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:26
Considering the adaptive comfort approach, this article estimates if interior conditions in London’s naturally ventilated residential stock are comfortable under the Urban Heat Island (UHI) effect and predicts if climate change will further affect comfort levels. A discussion whether the UHI is currently saving or aggravating energy consumption in buildings is presented. The affection that climate change may have in the energy performance of buildings in the future is also estimated. The most representative household profiles in London have been modelled and simulated.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:24
In this paper, we propose a new calculation method for evaluating the inhomogeneous outdoor thermal environment by incorporating a multi-node human thermoregulation model into the simulation method based on CFD analysis of the outdoor thermal environment. We also investigated the effects of weather conditions on the inhomogeneity of the radiant environment and the thermal comfort for pedestrians using the proposed calculation method. Two different weather condition cases are investigated in this study: (1) a scorching hot day and (2) a cloudy day.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:22
The paper is focused on identifying factors affecting the energy consumption & comfort conditions of multi-storied apartments in composite climate of north India. The findings reveal that the residents are very well adapted to their thermal environment and are comfortable at a broader temperature range (22.5–30.6 °C). The TSV-PMV difference was observed to be fairly significant for the winter and summer period, i.e. 50C and 1.10C respectively whereas marginally differed for the annual data i.e. 0.60 C. The energy-use evaluation through simulations has identified solar gain through ext.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:17
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.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:14
In recent years, more and more tall buildings have a mixed-use or residential program. This shift from formerly mainly office use requires new evaluations and guidelines for occupant comfort. This paper examines the relationship between the structural core of the building, its floor plan, the overall shape and its potential for natural ventilation, and how these relate to human comfort, energy efficiency and structural performance. The results are qualitative recommendations for the initial design stage of a tall building in a given climate zone.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:13
Climate responsive design ensures thermal comfort in buildings without using excessive energy for heating and cooling. This study explores how the relationship between the quantity of north (equator) facing window area, the quantity of thermal capacity and the distribution of thermal capacity in a space can improve comfort and energy efficiency in residential buildings in Australia, and optimise lifetime CO2-e emissions. The study concludes that thermal capacity can improve the thermal efficiency of the simulated structure, primarily through its influence on annual cooling loads.
Submitted by Maria.Kapsalaki on Wed, 07/02/2014 - 22:10
A current trend is to consider that the presence of free hanging sound absorbers (FHU) installed in Thermally Activated Buildings (TABS) reduces the thermal comfort by lowering radiative and convective exchanges with the cooled concrete slab. In this study we propose a simple thermal model of FHU which may be implemented into building simulation software like TRNSys. This model considers convective and radiative exchanges but also the air flows above and below FHU. Experimentally, we observe that a ceiling coverage of 50% leads to a operative temperature increase of 0.3°C.