scholarly journals Impact of indoor air volume on thermal performance in social housing with mixed mode ventilation in three different climates.

2021 ◽  
Author(s):  
Claudia Eréndira Vázquez-Torres ◽  
Adolfo Gómez-Amador
Keyword(s):  
Thermal Performance ◽  
Indoor Air ◽  
Social Housing ◽  
Mixed Mode ◽  
Air Volume ◽  
Different Climates

scholarly journals Desempeño térmico de un espacio habitable con ventilación modo mixto. Diferentes condiciones volumétricas y diferentes condiciones térmico ambientales en el Estado de Guanajuato. México

2019 ◽  
pp. 11-19
Author(s):  
Claudia Eréndira Vázquez-Torres ◽  
Adolfo Gómez-Amador ◽  
Carlos Escobar-Del Pozo
Keyword(s):  
Indoor Air ◽  
Energy Demand ◽  
Mixed Mode ◽  
Operating Temperature ◽  
Thermal Conditions ◽  
Base Case ◽  
Active Systems ◽  
Heating And Cooling ◽  
Air Volume ◽  
Surface Data

In the present work the thermal performance of a habitable space with mixed mode ventilation is shown. Space located in a dwelling representative of the housing register by type and surface, data from CONAVI (2017). Results of operating temperature for a base case and six virtual evaluation models (MEVi) are presented, varying the interior air volume, using Design Builder® calculation tool. The main objective was to determine the model with less use of active systems by varying the volume of indoor air with a certain comfort range, according to each thermal condition, when using mixed mode ventilation. Key results: A) Heating and cooling needs were determined in three thermal conditions, B) by increasing the volume of indoor air, there was a decrease in comfort hours per year, and a clear tendency to keep the window open for three thermal conditions, C) it is demonstrated that, in the thermal conditions: cold sub humid, warm sub humid and temperate sub humid, that occur in the state of Guanajuato Mexico, the volume of indoor air is directly proportional to the energy demand by year.

Daylight and thermal performance of a switchable ethylene tetra-fluoro-ethylene cushion with dynamic control in different climates

2021 ◽  
Author(s):  
Wanfang Zhao ◽  
Wei He ◽  
Zhongting Hu ◽  
Xiaoyu Zheng ◽  
Sheng Zhang ◽  
...  
Keyword(s):  
Thermal Performance ◽  
Dynamic Control ◽  
Different Climates

Kitchen and Toilet of the Residence Exhaust Flow Field Analysis

2011 ◽  
Vol 354-355 ◽  
pp. 726-731
Author(s):  
Yue Ren Wang ◽  
Cong Xue ◽  
Jing Zhang
Keyword(s):  
Indoor Air ◽  
Cfd Simulation ◽  
Simulation Software ◽  
Field Analysis ◽  
Air Distribution ◽  
Volume Changes ◽  
Air Volume ◽  
Secondary Pollution ◽  
Comparison Results ◽  
Flow Field Analysis

Adopting the k-ε standard model, the CFD simulation software to simulate the indoor kitchen and toilet different row of indoor air volume air distribution in natural ventilated circumstance, by comparison results show that different row of indoor air volume changes in the rate of secondary pollution rate, and then to provide the change rule of indoor air quality protection reference basis.

scholarly journals User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation

2020 ◽  
Vol 12 (22) ◽  
pp. 9672
Author(s):  
Mamdooh Alwetaishi ◽  
Ashraf Balabel ◽  
Ahmed Abdelhafiz ◽  
Usama Issa ◽  
Ibrahim Sharaky ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
High Altitude ◽  
Air Temperature ◽  
Thermal Performance ◽  
Indoor Air ◽  
Computer Modelling ◽  
Evaporative Cooling ◽  
Comfort Level ◽  
Thermal Mass ◽  
The Impact

The study investigated the level of thermal comfort in historical buildings located at a relatively high altitude in the Arabian Desert of Saudi Arabia. The study focused on the impact of the use of thermal mass and orientation on the level of thermal performance at Shubra and Boqri Palaces. Qualitative and quantitative analyses were used in this study, including a questionnaire interview with architecture experts living at the relatively high altitude of Taif city, to obtain data and information from local experts. The computer software TAS EDSL was used along with on-site equipment, such as thermal imaging cameras and data loggers, to observe the physical conditions of the building in terms of its thermal performance. The study revealed that the experts’ age and years of experience were important aspects while collecting data from them during the survey. The use of thermal mass had a slight impact on the indoor air temperature as well as the energy consumption, but it helped in providing thermal comfort. Use of ventilation can improve thermal comfort level. Evaporative cooling technique has a considerable impact on reducing indoor air temperature with 4 °C drop, improving the thermal comfort sensation level. The novelty of this work is that, it links the outcomes of qualitative results of experts with field monitoring as well as computer modelling. This can contribute as method to accurately collect data in similar case studies.

scholarly journals The Significance of Building Design for the Climate

2018 ◽  
Vol 22 (1) ◽  
pp. 165-178 ◽  
Author(s):  
Aiman Albatayneh ◽  
Dariusz Alterman ◽  
Adrian Page ◽  
Behdad Moghtaderi
Keyword(s):  
Thermal Performance ◽  
Ghg Emissions ◽  
Weather Conditions ◽  
Building Design ◽  
Sustainable Building ◽  
Climate Zone ◽  
Heating And Cooling ◽  
Wide Range ◽  
The Right ◽  
Different Climates

Abstract Building design is important for saving energy and reducing GHG emissions by applying passive solar heating and cooling design principles and using the right materials and appropriate design tools. This will make the home healthier and more comfortable. The design of energy efficient and sustainable buildings is critical for the future. A key aspect of any design is the realistic and accurate prediction of the performance of the building under a wide range of weather conditions. This paper examines the effect of different climate zones in Australia (which are comparable to the world's major climates) on the thermal performance of a complete building and recommended design techniques to suit each climate zone to enhance the overall thermal performance. To examine the effect of the location (different climates) on the overall thermal performance and how a good design in one location may not be suitable at another location, AccuRate will be used to assess the thermal performance for the exact module in different climates zones to allow a fair comparison to find the appropriate design for the climate where the building is located. Also, in this research, each climate zone design requirements and techniques were addressed for various climate variables (including: solar radiation, rainfall, wind speed and direction and humidity) to design sustainable building which save great amount of energy while sustaining occupants thermal comfort.

scholarly journals Bayesian Calibrating Educational Building Thermal Models to Hourly Indoor Air Temperature: Methodology and Case Study

2021 ◽  
Author(s):  
Danlin Hou ◽  
Chang Shu ◽  
Lili Ji ◽  
Ibrahim Galal Hassan ◽  
Liangzhu (Leon) Wang
Keyword(s):  
Thermal Performance ◽  
Indoor Air ◽  
Real Life ◽  
Calibration Procedure ◽  
Energy Performance ◽  
Uncertainty Assessment ◽  
Vulnerable Groups ◽  
Thermal Models ◽  
Air Temperatures ◽  
The One

Abstract With the increase in the frequency and duration of heatwaves and extreme temperatures, global warming becomes one of the most critical environmental issues. Heatwaves pose significant threats to human health, including related diseases and deaths, especially for vulnerable groups. Such as the one during the 2018 summer in Montreal, Canada, caused up to 53 deaths, with most lived in buildings without access to air-conditioning. Unlike building energy models that mainly focus on energy performance, building thermal models emphasizes indoor thermal performance without a mechanical system. It is required an understanding of the complex dynamic building thermal physics in which detailed building parameters need to be specified but challenging to be determined in real life. The uncertainty assessment of the parameters estimates can make the results more reliable. Therefore, in this paper, a Bayesian-based calibration procedure was presented and applied to an educational building. First, the building was modeled in EnergyPlus based on an in-site visit and related information collection. Second, a sensitivity analysis was performed to identify significant parameters affecting the errors between simulated and monitored indoor air temperatures. Then, a Meta-model was developed and used during the calibration process instead of the original EnergyPlus model to decrease the requirement of computing load and time. Subsequently, the Bayesian inference theory was employed to calibrate the model on hourly indoor air temperatures in summer. Finally, the model was validated. It is shown that the Bayesian calibration procedure not only can calibrate the model within the performance tolerance required by international building standards/codes but also predict future thermal performance with a confidence interval, which makes it more reliable.

Changes in Airborne Fungi from the Outdoors to Indoor Air; Large HVAC Systems in Nonproblem Buildings in Two Different Climates

AIHA Journal ◽  
2003 ◽  
Vol 64 ◽  
pp. 269-275 ◽  
Author(s):  
P.C. Kemp ◽  
H.G. Neumeister-Kemp ◽  
B. Esposito ◽  
G. Lysek ◽  
F. Murray
Keyword(s):  
Indoor Air ◽  
Airborne Fungi ◽  
Hvac Systems ◽  
Different Climates
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