scholarly journals Air Tightness of New Australian Residential Buildings

2017 ◽  
Vol 180 ◽  
pp. 33-40 ◽  
Author(s):  
Michael Ambrose ◽  
Mike Syme
Keyword(s):  
Residential Buildings ◽  
Air Tightness

scholarly journals Evaluation of Effects of the Humidity Level-Based Auto-Controlled Centralized Exhaust Ventilation Systems on Thermal Comfort of Multi-Family Residential Buildings in South Korea

2019 ◽  
Vol 11 (17) ◽  
pp. 4791
Author(s):  
Kwag ◽  
Park ◽  
Kim ◽  
Kim
Keyword(s):  
Air Quality ◽  
South Korea ◽  
Thermal Comfort ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Residential Buildings ◽  
Humidity Level ◽  
Exhaust Ventilation ◽  
Air Tightness ◽  
Ventilation Systems

Building air-tightness has been increased to make energy efficient buildings. However, various indoor air quality issues can be caused by high building air-tightness because it allows low air and moisture transmission through building envelop. In order to solve and prevent these issues, mechanical ventilation systems can be used to control the indoor humidity level. The purpose of this paper is to evaluate the performances of the Relative Humidity (RH)-sensor based auto-controlled centralized exhaust ventilation systems to manage indoor air quality and thermal comfort of multi-family residential buildings in South Korea. A series of field tests were performed for different target zones and for various moisture source scenarios. As a result, it was found that the auto-controlled centralized exhaust ventilation systems were able to control indoor air quality and to maintain the zones thermal comfort faster than the baseline cases that did not operate exhaust vents. The results presented in this paper can show the potential and the feasibility of the auto-controlled centralized exhaust ventilation systems for multi-family residential buildings in South Korea. It is expected that the results presented in this paper would be useful for building owners, engineers, and architects when designing building systems.

Measured air tightness performance of residential buildings in North China and its influence on district space heating energy use

2012 ◽  
Vol 51 ◽  
pp. 157-164 ◽  
Author(s):  
Shuqin Chen ◽  
Mark D. Levine ◽  
Haiying Li ◽  
P. Yowargana ◽  
Linna Xie
Keyword(s):  
Energy Use ◽  
North China ◽  
Residential Buildings ◽  
Space Heating ◽  
Air Tightness

scholarly journals Impact of Apartment Tightness on Temperature Variability during a Fire

2020 ◽  
Vol 17 (12) ◽  
pp. 4590
Author(s):  
Jerzy Gałaj ◽  
Damian Saleta
Keyword(s):  
Thermal Imaging ◽  
Residential Buildings ◽  
Temperature Variability ◽  
Critical Conditions ◽  
Fire Tests ◽  
Fire Growth ◽  
Video Cameras ◽  
Air Tightness ◽  
Modernization Process ◽  
The Impact

Along with the thermal modernization process of old residential buildings, there has been a significant increase in the air tightness of apartments, which may contribute to the deterioration of the safety of users and rescue teams in a fire. The main goal of this study was to investigate the impact of the air tightness of an apartment on fire growth and temperature variability. In the work, an experimental method was applied. Two full-scale fire tests were carried out, one in a sealed apartment and the other in unsealed one. The temperature was measured by thirty-two thermocouples. Two thermal imaging and video cameras were also used to evaluate a temperature field as well as flame and smoke height. Based on the analysis, conclusions have been formulated. It is noteworthy that the highest temperatures and significant increase in pressure were obtained in a sealed apartment, but dangerous and critical conditions regarding firefighters’ safety were achieved faster and persisted much longer in an unsealed one.

The Windows in the Modular Structure - Air Tightness and Quality of Installation Diagnostics

2014 ◽  
Vol 1041 ◽  
pp. 187-190
Author(s):  
Pavel Oravec ◽  
Barbora Hrubá ◽  
Zdeněk Peřina
Keyword(s):  
Critical Points ◽  
Laboratory Testing ◽  
Residential Buildings ◽  
Apartment Building ◽  
Real Condition ◽  
Measuring Devices ◽  
Time Scanning ◽  
The Subject ◽  
Air Tightness

Renewal windows and doors in residential buildings is a big trend at present. On windows, as products, a number of strict requirements that are fulfilled during laboratory testing are placed. What is the real condition after installation in the construction? The subject of this paper is the assessment of the tightness of replaced windows and doors in apartment situated in a prefabricated apartment building. For the diagnosis measuring devices Blower Door was used. At the same time scanning by infrared thermocamera was done. Critical points of leakage were detected. In the conclusion possibilities of solving leading to ensuring the required tightness are described.

scholarly journals Influence of Building Air Tightness on Energy Consumption of Ventilation System in Nearly Zero Energy Residential Buildings

2019 ◽  
Vol 111 ◽  
pp. 03074
Author(s):  
Wei Liu ◽  
Zhen Yu ◽  
Jianlin Wu ◽  
Huai Li ◽  
Caifeng Gao ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Control Strategy ◽  
Energy Recovery ◽  
Residential Buildings ◽  
Ventilation System ◽  
Design Parameters ◽  
System Control ◽  
Recovery Efficiency ◽  
Zero Energy ◽  
Air Tightness

Building air tightness increased quickly in recent years as nearly zero energy buildings concept gradually drawn more attentions from the industry. Ventilation system plays an important role for the indoor air quality control in residential buildings with good air tightness. The energy consumption of the ventilation system is a significant part of the overall energy consumption of low energy residential building. The influence of the building air tightness on the energy consumption of ventilation system was not addressed sufficiently in previous studies. This paper analyses the quantitative relations between building air tightness, energy recovery efficiency and ventilation system control strategy. A mathematical model of the heating and cooling energy consumption in residential buildings is proposed, which takes building air tightness, energy recovery efficiency and control strategy of ventilation system as major input parameters. Equivalent COP of ventilation energy recovery system is proposed as an energy efficiency index of the ventilation system. It can be used as a criterion to decide the optimal design parameters of nearly zero residential buildings in different climate conditions.

scholarly journals Impact of Apartment Tightness on the Concentrations of Toxic Gases Emitted During a Fire

2019 ◽  
Vol 12 (1) ◽  
pp. 223 ◽  
Author(s):  
Jerzy Gałaj ◽  
Damian Saleta
Keyword(s):  
Interior Design ◽  
Residential Buildings ◽  
Fire Tests ◽  
Common Cause ◽  
Toxic Gases ◽  
Fire Environment ◽  
Cause Of Deaths ◽  
Air Tightness ◽  
Modernization Process ◽  
The Impact

Due to the thermal modernization process of old residential buildings, there has been a significant increase in the air-tightness of apartments, which may contribute to the deterioration of the safety of users and rescue teams in a fire, for example, the emergence of a very dangerous backdraft phenomenon. The aim of the study was to investigate the impact of air-tightness of premises on selected fire parameters in particular toxic gas concentrations, which is the most common cause of deaths of people due to fires. In the research, an experimental method was used, consisting of the measurement of concentrations of gases such as oxygen, carbon monoxide and dioxide, hydrogen sulfide, propylene, acetylene, hydrogen and nitric oxide, and dioxide, which most often give off during a fire due to modern interior design materials. Two fire tests were carried out, one in a sealed apartment and the other unsealed (one window wing half-open). The concentrations of the previously mentioned gases obtained in both tests are presented and then compared with each other. Based on the analysis, conclusions have been formulated, which suggest that increasing the tightness may increase the toxicity of the fire environment.

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