The Indoor Thermal Environment Simulation and Analysis of an Emporium With Atrium

Solar Energy ◽  
2006 ◽  
Author(s):  
Bing Wei ◽  
Yuefen Gao ◽  
Xiangning Wang ◽  
Zhiwei Wang ◽  
Li Li
Keyword(s):  
Cfd Simulation ◽  
Thermal Environment ◽  
Three Dimensional ◽  
Building Energy ◽  
Correction Method ◽  
Indoor Space ◽  
Indoor Thermal Environment ◽  
Building Energy Conservation ◽  
Environment Simulation ◽  
Temperature And Velocity Fields

In most emporiums with atrium the phenomena of vertical temperature nonuniformity are very severe, especially in winter. In this paper with an example of emporium with atrium the actual data are measured and by using the method of CFD simulation the indoor thermal environment of the atrium and surrounding area are simulated. The three-dimensional flow fields are studied, the temperature and velocity fields under different air flow organization modes are gained, the effect of the atrium to the whole building is discussed and the corresponding correction method to the indoor space loads, especially the space loads in the upper and lower stories are proposed. The results above will be good references for the design of the emporiums with atrium. The use of the correction method will help to obtain a comfortable and stable indoor thermal environment, and also will be good to the building energy conservation.

A Simple Three-Dimensional Terrain Modeling Method for Complex Terrain Wind Environment Simulation

2013 ◽  
Vol 397-400 ◽  
pp. 2420-2425
Author(s):  
Shi Ling Chen ◽  
Jun Lu ◽  
Wei Wei Yu ◽  
Shao Liang Zhang
Keyword(s):  
Complex Terrain ◽  
Cfd Simulation ◽  
Surface Wind ◽  
Three Dimensional ◽  
Modeling Method ◽  
Terrain Modeling ◽  
Wind Environment ◽  
Near Surface ◽  
Digital Modeling ◽  
Environment Simulation

In order to solve the problems in complex terrain modeling by computational fluid dynamics(CFD) simulation at prophase, such as difficulty in collecting data, tedious modeling process, wasting times and so on. In this paper, combined various commonly digital technology，and the transformation between the network terrain file and CFD (PHOENICS) solid model is realized by using a new set of outdoor complex terrain rapid digital modeling method. Take mountain city -Chongqing as an object to analyses the near-surface wind environment. The method is directly generated by the network terrain data without any screening or simplified. The virtual model can be matched the actual terrain with the extreme. By using the simulation cycle for complex terrain, time will be greatly shortened for urban planning.

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.

Indoor Thermal Environment Simulation by Using MATLAB and Simulink

2010 ◽  
Vol 29-32 ◽  
pp. 2785-2788
Author(s):  
Jian Yao ◽  
Jin Xu
Keyword(s):  
Energy Efficient ◽  
Indoor Environment ◽  
Thermal Environment ◽  
Building Envelope ◽  
Cold Winter ◽  
Performance Simulation ◽  
Application Study ◽  
Indoor Thermal Environment ◽  
Energy Efficient Buildings ◽  
Environment Simulation

To compare the indoor thermal environment under different building envelope constructions, a Matlab-based tool was presented for building envelope performance simulation. An application study of two cases illustrates energy efficient buildings can provide more suitable indoor environment than non-energy efficient buildings in cold winter and hot summer. In conclusion, this paper provides a new and fast way for the prediction of indoor thermal environment.

scholarly journals The Indoor Thermal Environment Simulation and Testing Validation of a Power Plant Turbine Room in Extreme Cold Area

2016 ◽  
Vol 146 ◽  
pp. 632-639
Author(s):  
Guofu Du ◽  
Meiying Lei ◽  
Xi Chen ◽  
Congxin Huang ◽  
Yanjie Lv ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Environment ◽  
Indoor Thermal Environment ◽  
Cold Area ◽  
Environment Simulation ◽  
Extreme Cold

The Detection and Analysis of Different Exterior Decorative Materials CS Panel Solar Radiation Performance Energy Saving Influence

2013 ◽  
Vol 368-370 ◽  
pp. 1007-1012
Author(s):  
Feng Hua Zhao ◽  
Hai Rong Dong ◽  
Y.Y. Zhou
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Energy Saving ◽  
Thermal Environment ◽  
Building Energy ◽  
Radiation Absorption ◽  
Building Energy Efficiency ◽  
Absorption Properties ◽  
Indoor Thermal Environment ◽  
Main Factors

The research of CS panel integration performance of energy saving, load bearing and decoration, shows that exterior materials reflection and absorption of solar radiation is one of the main factors that affects the thermal insulation and building energy efficiency. In this work the experimental detection data is analyzed both quantitatively and qualitatively in order to realize the influence of different solar radiation absorption properties from the outer decorative materials to the CS panel indoor thermal environment and energy-saving. The principle of energy saving optimization choice of the CS panel exterior decorative materials is proposed.

A TOPSIS optimization for the indoor thermal environment through oscillating airflow generated from a cassette split type air conditioner

2020 ◽  
pp. 1420326X2093930
Author(s):  
Yunqing Fan
Keyword(s):  
Thermal Performance ◽  
Cfd Simulation ◽  
Control Method ◽  
Thermal Environment ◽  
Vertical Section ◽  
Thermal Preference ◽  
Air Conditioner ◽  
Indoor Thermal Environment ◽  
Swing Angle ◽  
The Impact

This study evaluates the feasibility of a control method, ‘the Technique for Order of Preference by Similarity to Ideal Solution’ (TOPSIS) for the optimization of the subzone thermal environment by optimizing the oscillating airflow generated from a cassette split type air conditioner. To address the quasi-dynamic thermal comfort problems, various operation swinging angles of the louvre in the supply opening of an air conditioner and swinging periods were investigated by computational fluid dynamics (CFD) simulation. The impact of air supply control strategies (louvres movement) on the indoor thermal environment was evaluated by multi-criteria operation under quasi-dynamic conditions. The operation parameters were shown to have significantly improved the deviation in thermal uniformity by 16.5% and thermal preference by 7.6%. A 40 s swing period and wider swing angles for the operation of the inner louvre would satisfy the thermal uniformity rather than other alternatives. A shorter swing period <20 s is insufficient to allow perfect airflow mixing at the vertical section. For individual target mode such as the room corner, the thermal performance is more sensitive to the swing angle than the swing period; by increasing the swing angle to ±60° to enhance thermal preference, a 24.1% increase in the overall thermal performance would be achieved.

Numerical Simulation of Air Distribution in a Residential Building With Capillary Plane HVAC Terminal System

2007 ◽  
Author(s):  
Wei Bing ◽  
Jiang Lu ◽  
Li Li ◽  
Zhiwei Wang
Keyword(s):  
Thermal Comfort ◽  
Thermal Environment ◽  
Residential Building ◽  
Temperature Fields ◽  
Air Distribution ◽  
Air Conditioning System ◽  
Terminal System ◽  
Indoor Space ◽  
Indoor Thermal Environment ◽  
Operating Modes

Nowadays the capillary plane HVAC terminal system as an advanced terminal air conditioning system is being widely used. It has many advantages such as thermal comfort, energy conservation and saving indoor space etc. In this paper, with the example of a typical residential room where the capillary plane HVAC terminal system is installed, the indoor thermal environment is simulated and the influence of different capillary mat placement modes is analyzed, three operating modes in summer and winter are simulated by using the method of CFD, and the corresponding temperature fields are presented. Based on the simulation results, the temperature fields are appraised from the view of thermal comfort. These will be good references to the design and application of the capillary plane HVAC terminal system.

A review of research on dynamic thermal comfort

2021 ◽  
pp. 014362442110030
Author(s):  
Shuanghua Cao ◽  
Xin Li ◽  
Bing Yang ◽  
Fan Li
Keyword(s):  
Steady State ◽  
Research And Development ◽  
Thermal Comfort ◽  
Prediction Models ◽  
Environmental Control ◽  
Thermal Environment ◽  
Indoor Thermal Environment ◽  
Building Energy Conservation ◽  
Environment Control ◽  
Intelligent Detection

Nowadays, people’s requirements for comfort are getting higher and higher, and traditional steady-state thermal comfort environment sometimes cannot meet people’s requirements. Dynamic thermal comfort is considered to meet people's requirements for comfort better than traditional thermal comfort, and it is also conducive to the health of occupants and building energy conservation. Therefore, this article reviews the literature on dynamic thermal comfort. First, this article briefly describes the transition from a steady-state thermal environment to a dynamic thermal environment. Next, this article reviews the research related to dynamic thermal comfort, such as the frequency of airflow fluctuations, simulation of natural wind, thermal prediction models, the use of intelligent detection equipment, and personal environmental control. This article summarizes the related research and development of dynamic thermal comfort from the aspects of dynamic airflow parameters, indoor thermal environment regulation, thermal experience, etc. This article aims to illustrate the necessity of the development of dynamic thermal comfort and its current results. The results show that under the trend of the artificial intelligence era, dynamic thermal comfort still has broad development potential. This article It can provide some research ideas for subsequent thermal comfort research. Practical application: This paper summarizes the research and development of dynamic thermal comfort from dynamic airflow, indoor thermal environment control, thermal experience, etc., and makes appropriate extensions and prospects accordingly. At the same time, the necessity of combining thermal comfort with AI trends is emphasized. This paper can provide references and ideas for thermal research on thermal comfort.

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