scholarly journals Determinación de horarios de aberturas en una vivienda de construcción masiva para su corrección térmica interior

2019 ◽  
pp. 1-10
Author(s):  
Arlees Ysrael Diaz-Salazar ◽  
Jorge Armando Ojeda-Sanchez ◽  
Gonzalo Bojórquez-Morales
Keyword(s):  
Thermal Performance ◽  
Thermal Environment ◽  
Humid Climate ◽  
Thermal Discomfort ◽  
Air Conditioners ◽  
Climatic Environment ◽  
The Hours ◽  
Humidity Measurements ◽  
Construction Model ◽  
Short Time

Currently the choice of massive construction models is the alternative with greater recurrence to acquire a house in warm humid climate in Mexico, however, much of this is not adapted to its climatic environment and causes thermal discomfort in the user because of the internal environment generated as response of the characteristics of its architectural envelope. To correct in a short time the effect of thermal discomfort, the user usually employs mechanized climatizations solutions such as fans or air conditioners. It was proposed the use of schedule for opening hours in the architectural envelope in a warm humid climate, mainly in windows, as a strategy to correct the internal thermal environment, considering its advantages as the immediate application and easy implementation, in contrast to some architectural or physical modification of the envelope. Dry bulb temperature and relative humidity measurements were made in a massive construction model to determine its thermal performance in the hottest month of the year. Subsequently, simulations were made with EnergyPlus to determine suitable opening times to correct the thermal environment by prolonging the hours of interior comfort when compared with the original interior thermal performance of the envelope.

scholarly journals DESEMPENHO TÉRMICO DE UMA EDIFICAÇÃO UNIFAMILIAR NATURALMENTE VENTILADA PARA O CLIMA DE TEÓFILO OTONI-MG

2017 ◽  
Vol 13 (2) ◽  
Author(s):  
Camila Cordeiro de Oliveira ◽  
Nayara Rodrigues Marques Sakiyama ◽  
Layane Ventura de Miranda
Keyword(s):  
Energy Efficient ◽  
Architectural Design ◽  
Natural Ventilation ◽  
Climate Data ◽  
Single Family ◽  
Humid Climate ◽  
Thermal Discomfort ◽  
The Hours ◽  
Efficient Construction ◽  
The City

RESUMO: Nos últimos anos, em virtude das preocupações com a eficiência energética das edificações, a adequação da arquitetura ao clima ganhou maior importância. Sendo que, uma das formas de tornar uma construção eficiente energeticamente, é através da utilização de estratégias de condicionamento passivo, destacando-se a ventilação natural para o clima quente e úmido. Neste contexto, o presente trabalho apresenta a simulação computacional de uma edificação unifamiliar, naturalmente ventilada, realizada por meio do plug-in Archsim, para a cidade de Teófilo Otoni – MG, utilizando-se, para tanto, os dados climáticos do TRY (Test Reference Year). As alternativas adotadas nas simulações consistiram em variar a disposição e a área de ventilação das aberturas, verificando a influência destes parâmetros no desempenho térmico da edificação. De acordo com os resultados obtidos na simulação pode-se dizer que a melhor orientação para as aberturas é na direção leste-sul com área de abertura para ventilação natural de 20% da área do piso. Para esta composição a porcentagem de horas de conforto para a edificação é de 57,5% e o desconforto térmico anual é de 42,5% das horas. A principal contribuição deste artigo consiste na análise da utilização da ventilação natural em edificações de pequeno porte e seu impacto no conforto térmico do usuário, apresentando ainda a importância da utilização de simulações computacionais como ferramenta de auxilio no projeto arquitetônico.
 
 ABSTRACT: Concerns related to energy efficiency in buildings in recent years, induced the increase of architectural adaptation to climate. The use of passive conditioning strategies, emphasizing natural ventilation for hot and humid climate is one way to have an energy-efficient construction. In this context, this paper presents a computer simulation of a single family building, naturally ventilated, held by the plug-in Archsim to the city of Teófilo Otoni - MG, using the climate data TRY (Test Reference Year). The alternative adopted in the simulations consisted in varying the layout and area of ventilation openings, checking the influence of these parameters on the thermal performance of the building. According to the results obtained in the simulation, the best orientation for the openings is in the south-east direction with opening area for natural ventilation of 20% of the floor area. For this composition the building comfort hours’ percentage is 57.5% and the annual thermal discomfort is 42.5% of the hours. The main contribution of this paper is the analysis of the use of natural ventilation in small buildings and its impact on the thermal comfort of the user, showing the importance of using computer simulations as an aid tool in architectural design.

An Empirical Study on Time Lag Phenomenon Regarding Summertime Indoor Thermal Environments in the Domestic Buildings of Different Construction Types in Hot-Humid Climate Zone

2014 ◽  
Vol 911 ◽  
pp. 504-508 ◽  
Author(s):  
Hung Ren Hsieh ◽  
Wun Yuan Chen ◽  
Hsin Yu
Keyword(s):  
Natural Ventilation ◽  
Thermal Environment ◽  
Time Lag ◽  
Humid Climate ◽  
Indoor Temperature ◽  
Thermal Environments ◽  
Temperature And Humidity ◽  
Humidity Measurements ◽  
Detached House ◽  
Heavy Construction

In the empirical case studies of the seven detached house buildings situated in Yilan, Taiwan in a hot and humid climate, this research conducted the actual measurements and analysis of the Summertime Indoor and Outdoor thermal environment parameters in order to accomplish the research of Time Lag Phenomenon of Summertime Indoor Temperature and Humidity in the Buildings of Light (Composite) Constructions and Heavy (Reinforced Concrete) Constructions. Firstly, it indicated that given the condition of doors and windows in closed positions, there would be Time Lag Phenomenon for both of the indoor Temperature and Humidity measurements in domestic buildings. The Temperature Time Lag for Heavy Construction Buildings had a duration of around three hours, almost as twice that of the figure for Light Construction Buildings. There was a significant correlation between Quantity of Interior Finishes and Humidity Time Lag inside domestic buildings, whereas the bigger the Quantity of Interior Finishes, the longer the Humidity Time Lag. Secondly, it also showed that given the condition of doors and windows in opened positions, there was almost zero Time Lag for both of the domestic indoor Temperature and Humidity measurements. Last but not least, generally speaking, the Ratio of Indoor/Outdoor Diurnal Temperature Range of Light Construction Buildings were higher than that of Heavy Construction Buildings. In particular, given the condition of doors and windows in opened positions with natural ventilation in summertime, it was slightly cooler inside the Light Construction Domestic Buildings than the Heavy Construction Domestic Buildings.

scholarly journals Optimal Air Conditioner Placement Using a Simple Thermal Environment Analysis Method for Continuous Large Spaces with Predominant Advection

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4663
Author(s):  
Tatsuhiro Yamamoto ◽  
Akihito Ozaki ◽  
Myonghyang Lee
Keyword(s):  
Air Conditioning ◽  
Thermal Environment ◽  
Fluid Dynamic ◽  
Optimal Placement ◽  
Air Conditioner ◽  
Analysis Method ◽  
Computational Fluid Dynamic Analysis ◽  
Environment Analysis ◽  
Air Conditioners ◽  
Energy Simulations

The number of houses with large, continuous spaces has increased recently. With improvements in insulation performance, it has become possible to efficiently air condition such spaces using a single air conditioner. However, the air conditioning efficiency depends on the placement of the air conditioner. The only way to determine the optimal placement of such air conditioners is to conduct an experiment or use computational fluid dynamic analysis. However, because the analysis is performed over a limited period, it is difficult to consider non-stationarity effects without using an energy simulation. Therefore, in this study, energy simulations and computational fluid dynamics analyses were coupled to develop a thermal environment analysis method that considers non-stationarity effects, and various air conditioner arrangements were investigated to demonstrate the applicability of the proposed method. The accuracy verification results generally followed the experimental results. A case study was conducted using the calculated boundary conditions, and the results showed that the placement of two air conditioners in the target experimental house could provide sufficient air conditioning during both winter and summer. Our results suggest that this method can be used to conduct preliminary studies if the necessary data are available during design or if an experimental house is used.

scholarly journals Natural selection on thermal performance in a novel thermal environment

2014 ◽  
Vol 111 (39) ◽  
pp. 14165-14169 ◽  
Author(s):  
Michael L. Logan ◽  
Robert M. Cox ◽  
Ryan Calsbeek
Keyword(s):  
Natural Selection ◽  
Thermal Performance ◽  
Thermal Environment

Study on the Thermal Performance of the Vernacular Dwellings in Wei-He Plain of Shaanxi Province

2012 ◽  
Vol 476-478 ◽  
pp. 1589-1595
Author(s):  
Yi Ping Zhu ◽  
Xi Liao ◽  
Shu Yun Wu ◽  
Jing Luo ◽  
Yuan Jiang ◽  
...  
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Thermal Performance ◽  
Thermal Environment ◽  
Local Area ◽  
Shaanxi Province ◽  
Indoor Thermal Environment ◽  
Questionnaire Surveys

Based on indoor thermal environment test and questionnaire surveys, the paper studies on thermal insulation capacity and indoor thermal environment of the vernacular dwellings in Wei-he Plain of Shaanxi Province, China, and analyses their heating methods and application status. Besides, the popularity of sustainable techniques in local area has been evaluated and summarized. Moreover, the paper discusses the present problems in local indoor thermal environment and energy-saving status.

scholarly journals The Thermal Performance of Traditional Residential Buildings in Kathmandu Valley

2014 ◽  
Vol 10 (1) ◽  
pp. 172-183 ◽  
Author(s):  
Sushil B. Bajracharya
Keyword(s):  
Thermal Performance ◽  
Field Data ◽  
Thermal Environment ◽  
Residential Buildings ◽  
Residential Building ◽  
Kathmandu Valley ◽  
Indoor Thermal Environment ◽  
Outdoor Thermal Environment ◽  
Different Seasons ◽  
Better Than

This paper seeks to investigate into the aspects of thermal performance of traditional residential buildings in traditional settlements of Kathmandu valley. This study proceeds to analyze the detailed field data collected, with a view to identify the indoor thermal environment with respect to outdoor thermal environment in different seasons. This paper also compares the thermal performance of traditional buildings with modern residential buildings of traditional settlements of the valley. There is a regression analysis to obtain information about the thermal environment of different traditional and modern residential buildings with different conditions. The paper concludes that, thermal performance of traditional residential building, adapted in various ways to the changing thermal regime for thermal comfort is better than that of contemporary buildings.DOI: http://dx.doi.org/10.3126/jie.v10i1.10898Journal of the Institute of Engineering, Vol. 10, No. 1, 2014,  pp. 172–183

Media Hot and Cold

2021 ◽  
Author(s):  
Nicole Starosielski
Keyword(s):  
Climate Change ◽  
New Media ◽  
Thermal Environment ◽  
Cultural Dimensions ◽  
First Century ◽  
Air Conditioners ◽  
History Of ◽  
Infrared Cameras ◽  
The Many ◽  
And Control

In Media Hot and Cold Nicole Starosielski examines the cultural dimensions of temperature to theorize the ways heat and cold can be used as a means of communication, subjugation, and control. Diving into the history of thermal media, from infrared cameras to thermostats to torture sweatboxes, Starosielski explores the many meanings and messages of temperature. During the twentieth century, heat and cold were broadcast through mass thermal media. Today, digital thermal media such as bodily air conditioners offer personalized forms of thermal communication and comfort. Although these new media promise to help mitigate the uneven effects of climate change, Starosielski shows how they can operate as a form of biopower by determining who has the ability to control their own thermal environment. In this way, thermal media can enact thermal violence in ways that reinforce racialized, colonial, gendered, and sexualized hierarchies. By outlining how the control of temperature reveals power relations, Starosielski offers a framework to better understand the dramatic transformations of hot and cold media in the twenty-first century.

scholarly journals Green Façade Effects on Thermal Environment in Transitional Space: Field Measurement Studies and Computational Fluid Dynamics Simulations

2019 ◽  
Vol 11 (20) ◽  
pp. 5691 ◽  
Author(s):  
Hankun Lin ◽  
Yiqiang Xiao ◽  
Florian Musso ◽  
Yao Lu
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Thermal Environment ◽  
Traffic Noise ◽  
Field Measurements ◽  
Simulation Method ◽  
Urban Heat Islands ◽  
Transitional Space ◽  
Humid Climate ◽  
Dynamics Simulations

High-density urban development areas have several problems associated with them, such as the formation of urban heat islands, traffic noise, and air pollution. To minimize these problems, the green façades (GFs), which are used to guide climbing plants to grow vertically on building facade, are focused on by researchers and architects. This study focuses on GF application strategies and their optimizations for thermal comfort in a transitional space in a hot-humid climate. First, field measurements were collected from GF projects located in Guangzhou, China, in summer 2017. Second, a simulation method using computational fluid dynamics (CFD) was used to investigate the thermal effects of the GF’s foliage. Finally, seven GF typologies and one unshaded comparison model were used for simulations in three scenarios with south, east, and west orientations and compared to evaluate the effects of GFs on the thermal environment of the transitional space. The results of field measurements reveal that the GF reduced average Physiologically Equivalent Temperature (PET) by 2.54 °C, and that of CFD simulations reveal that three typologies of GFs are more effective in regulating the thermal environment in the summer. The results of this research provide support for further studies on the thermal effectiveness and design options of GFs for human comfort.

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