scholarly journals EFFECTS OF NATURAL VENTILATION AND SOLAR INSOLATION ON EVALUATION OF INDOOR THERMAL ENVIRONMENT IN SUMMER AND WINTER SEASONS

2009 ◽  
Vol 74 (638) ◽  
pp. 427-433 ◽  
Author(s):  
Younsuk KO ◽  
Satoru KUNO ◽  
Masayuki HARATA ◽  
Kazumi NAKAYAMA ◽  
Ryo IIMURA
Keyword(s):  
Natural Ventilation ◽  
Thermal Environment ◽  
Solar Insolation ◽  
Indoor Thermal Environment

scholarly journals Evaluation of Thermal Behavior of the Skeleton in a Green Building with the Aid of TABS

2019 ◽  
Vol 111 ◽  
pp. 01085
Author(s):  
Hiroshi Muramatsu ◽  
Tatsuo Nobe
Keyword(s):  
Heat Flux ◽  
Thermal Behavior ◽  
Air Conditioning ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Concrete Slab ◽  
Ventilation System ◽  
Office Building ◽  
Air Conditioning System ◽  
Indoor Thermal Environment

In this study, an office building in Japan that incorporates energy-saving features and environmental technologies was investigated. This office building features a green façade, natural ventilation, a concrete slab with no suspended ceilings, and thermo-active building systems. Two airconditioning systems were installed in this building—a ceiling radiation air-conditioning system and a whole floor-blow off air conditioning system. In addition, a natural ventilation system was installed. We surveyed the heat flux of the ceiling surface and indoor thermal environment of this building from 2015 through 2016. The ceiling using the heat storage amount of concrete maintains a constant temperature in the workplace during as well as after office hours. We also performed detailed measurements of the heat flux of the ceiling surface and indoor thermal environment in the summer of 2017. The results showed that the ceiling radiation air-conditioning system provided a stable thermal environment. Furthermore, we report that making use of the thermal behavior of the skeleton improved the operation of the ceiling radiation airconditioning system.

Indoor Thermal Environment Simulation of Xi'an Residential Building in Summer

2012 ◽  
Vol 512-515 ◽  
pp. 2882-2886
Author(s):  
Shi Jie Wu ◽  
Zeng Feng Yan
Keyword(s):  
Thermal Comfort ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Residential Building ◽  
Indoor Thermal Environment ◽  
Indoor Thermal Comfort ◽  
Energy Plus ◽  
Environment Simulation ◽  
Indoor Air Flow ◽  
Night Ventilation

Natural ventilation is an important role to improve the residential building indoor thermal environment in summer. This paper use Energy Plus to simulate indoor thermal environment and use CFD to simulate indoor air flow for Xi’an residential building, analysis the influence that different ventilation mode for indoor thermal environment factors. Then with the simulated result of PMV-PPD value to estimate indoor thermal comfort. Proved night ventilation is necessary in residential building in Xi’an and effectiveness to improve indoor thermal comfort.

scholarly journals Assessment of indoor thermal environment of Aceh house based on WBGT index

2021 ◽  
Vol 881 (1) ◽  
pp. 012023
Author(s):  
Muslimsyah ◽  
A Munir ◽  
Y Away ◽  
Abdullah ◽  
K Huda ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Ventilation System ◽  
Vernacular Architecture ◽  
Maximum Temperature ◽  
Cooling Process ◽  
Temperature Index ◽  
Indoor Thermal Environment ◽  
Temperature Ranges

Abstract Thermal comfort is one of the standard assessments of building thermal environment. Air movement is an important parameter for in a naturally ventilated to achieve thermal comfort by accelerating the evaporative cooling process on the human body. Aceh House has a standard of thermal comfort with a vernacular architecture with a natural ventilation system. This vernacular architectural building has a fairly high harmonization of the environment because it has undergone a process of adaptation. In this study, observations were made at the Original House (OH), the Adaptive Reuse House (ARH), and the Aceh Modified House (AMH). By using the method of assessing changes in environmental comfort, using Wet Bulb Temperature Index (WBGT) method, the minimum and maximum temperature ranges are 25°C and 30°C. In the WBGT thermal rating, AMH has the higher thermal and is followed by ARH and OH respectively. Thus, OH has lower thermal compared to other Aceh houses.

Indoor Thermal Environment Studies and Comparisons of Representative Residential Buildings in Urban Village of Guangzhou during Typical Weather in Summer

2011 ◽  
Vol 374-377 ◽  
pp. 66-69
Author(s):  
Zhi Sheng Li ◽  
Jia Wen Liao ◽  
Xu Hong Liu
Keyword(s):  
Air Temperature ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Residential Buildings ◽  
Correlation Coefficients ◽  
Environment Design ◽  
Indoor Thermal Environment ◽  
Human Thermal Comfort ◽  
Urban Village ◽  
And Control

In order to improve human thermal comfort of residential buildings in urban village, the study of indoor thermal environment is necessary. Three typical selected houses in Huangpu Village were taken as an example to study. After a seven-day field measurement under the condition of natural ventilation, thermal neutral temperature and PMV indices were calculated based on the collected data. It is shown that the PMV values of the houses vary from -0.5 to 2.1, and the acceptance rate differ significantly in different houses and human activities states. The parameters including outdoor air temperature, indoor air temperature and PMV were studied through the linear regression, and the results demonstrate that their correlation coefficients are high, and their relationships have been developed. The results of this work create a precedent for the indoor thermal environment design and control of urban village buildings in China.

scholarly journals EFFECT OF THE MONITOR ROOF ON THE INDOOR THERMAL ENVIRONMENT AND PROPERTY OF NATURAL VENTILATION IN THE ROOM

2007 ◽  
Vol 13 (26) ◽  
pp. 617-622 ◽  
Author(s):  
Daisuke NARUMI ◽  
Hiromi HABARA ◽  
Yoshiyuki SHIMODA ◽  
Toshio YAMANAKA ◽  
Minoru MIZUNO
Keyword(s):  
Natural Ventilation ◽  
Thermal Environment ◽  
Indoor Thermal Environment

Optimal Design of the External Respiration Double Skin Facade

2011 ◽  
Vol 374-377 ◽  
pp. 257-262
Author(s):  
Shi Feng ◽  
Wang Wei
Keyword(s):  
Optimal Design ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
External Respiration ◽  
Indoor Temperature ◽  
Temperature Changes ◽  
Indoor Thermal Environment ◽  
Double Skin ◽  
Computational Fluid Dynamics Cfd ◽  
Cfd Method

An optimal design is taken on the external respiration double skin facade (DSF) of a office building in Wuhan. The indoor thermal environment of the office units in the building have been simulated by taken computational fluid dynamics (CFD) method, and then the paper analyzes the indoor temperature changes under the condition that the internal airflow status of the DSF for natural ventilation, without shade, vents closed and other cases, discusses the influences of different inner glazed skin’s thermal properties, DSF for active ventilation and different wind speed on indoor thermal environment, according to the simulation results we obtain parameters of relevant optimal design.

New Correlations Including Hourly Horizontal Radiation for Predicting Indoor Thermal Environment

2011 ◽  
Vol 71-78 ◽  
pp. 2671-2674
Author(s):  
Sheng Xian Wei ◽  
Shi Mei Guo ◽  
Xi Jia He
Keyword(s):  
Solar Radiation ◽  
Air Temperature ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Thermal Sensation ◽  
Environmental Parameters ◽  
Newton’S Iterative Method ◽  
Indoor Thermal Environment ◽  
One Year ◽  
Radiant Temperature

Fanger’s PMV is the most famous thermal sensation index but it is too complex to be applied in practice. Besides, the PMV index does not include the effect of horizontal solar radiation on the indoor thermal environment. In order to obtain simple and applicable correlations with consideration of solar radiation, a one-year measurement has been conducted in a naturally ventilated residential room in Qujing Normal University of Yunnan province, China. Based on collected data, PMV indices are calculated by using Newton’s iterative method. The relationships of the PMV and the environmental parameters — outdoor air temperature, indoor mean air temperature, mean radiant temperature, wind velocity, relative humidity, and hourly horizontal solar radiation — have been studied by the multivariable regression techniques. Large numbers of correlations with high correlativity have been developed in the present paper. It is convenient to use them to evaluate and predict the indoor thermal environment in the natural ventilation buildings.

Influence by Ventilation with Nature Wind on the Air Conditioning Energy Consumption

2013 ◽  
Vol 316-317 ◽  
pp. 1128-1132
Author(s):  
Ya Zhou Jing ◽  
Guo Jun Zhao ◽  
Hai Shan Li ◽  
Yan Gao
Keyword(s):  
Energy Consumption ◽  
Air Conditioning ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Indoor Thermal Environment ◽  
Natural Wind

In this paper, it reveals that the ventilation using patterns can do much to the energy consumption for air-conditioning. In the simulation, it models the person behavior with their action for regulating indoor thermal environment by opening the window for natural ventilation, and compares the influence by ventilation in different patterns to the air conditioning energy consumption. The results show that in the pattern priority for using the natural wind it is helpful for reducing the energy consumption.

Indoor Thermal Environment and Energy Conservation of Seaside Resident Building in Xiamen in Summer

2012 ◽  
Vol 518-523 ◽  
pp. 4461-4465
Author(s):  
Li Li
Keyword(s):  
Relative Humidity ◽  
Thermal Comfort ◽  
Natural Ventilation ◽  
Thermal Environment ◽  
Residential Buildings ◽  
Influence Factors ◽  
Residential Building ◽  
Building Energy ◽  
Indoor Thermal Environment ◽  
Ventilation Condition

The good and comfortable environment is beneficial to the health, and can improve working efficiency, make people imbued with more creativity. This means strengthening the competitiveness, increase economic efficiency. So, creating the good building environment not merely has a meaning on technology, and has social effect and economic meaning. In order to understand the situation of indoor thermal environment of the seaside residential building generally, a field measurement on the condition of summer was made in Xiamen from the last ten days of July to the first ten day of Aug, 2005, 2006 and 2008. Test the thermal environment and investigate the thermal comfort in residential buildings of natural ventilation condition, analyze the main influence factors of indoor thermal environment, and evaluate indoor thermal comfort with effective temperature (ET). The curves of indoor air temperature and relative humidity reflect the character of high temperature and high relative humidity in summer in Xiamen residential buildings. Discuss the methods of building energy saving. Suggest that, for seaside city in hot days, the natural ventilation and interval natural ventilation should be the main fundamental methods of improving the resident building thermal environment.

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