LoginThe means for keeping the indoor relative humidity (RH) and pollutant concentration below a threshold level of interests are necessary and essential to improving building performance in terms of indoor air quality (IAQ), energy
41st AIVC/ASHRAE IAQ- 9th TightVent - 7th venticool Conference - Athens, Greece - 4-6 May 2022
The conference "IAQ 2020: Indoor Environmental Quality Performance Approaches Transitioning from IAQ to IEQ”, organized by ASHRAE and AIVC, was held in Athens, Greece on 4-6 May 2022. The conference was also the 41st AIVC - 9th TightVent & 7th venticool conference. This collection contains 110 conference papers and 16 extended abstracts.
Volume content
Modelling the Similarity and the Potential of VOC and Moisture Buffering Capacities of Hemp Concrete on Indoor Air Quality and Relative Humidity | 2023 | English | 8 pp
New Low-Cost Sensing Network for Indoor Environmental Monitoring and Control in Buildings | 2023 | English | 8 pp
New types of low-cost sensors have the potential to replace existing sensor networks in buildings, which have high cost and low flexibility in terms of monitoring local indoor environmental quality (IEQ) close to the occupants.
Airtightness of Buildings—Evaluation of Leakage-Infiltration Ratio and Systematic Measurement Error due to Steady Wind and Stack Effect | 2023 | English | 9 pp
The fan pressurization method that is widely used to measure the airtightness of buildings is known to have quite large measurement error.
Sleep is essential for multiple aspects of a person’s well-being and can be affected by a person’s physical and mental state in addition to the environment they sleep in.
Indoor Environmental Quality Performance Approaches: Trending IAQ to IEQ to COVID-19 | 2023 | English | 5 pp
The University of Colorado Boulder (CU Boulder) is in Boulder, Colorado USA at 5280 feet above sea level.
A Numerical Study of the Effect of Limited Space Air Stability on SARS-CoV-2 Spreading in a Ventilated Room | 2023 | English | 7 pp
Worldwide concern has been focused on the airborne disease of the COVID-19 pandemic.
Sensor Location Methodology for Improved IEQ Monitoring in Working Environments | 2023 | English | 8 pp
In the current era, sensors in buildings have become an essential requirement for wide applications such as monitoring indoor air quality (IAQ), thermal and environmental conditions, controlling building heating, ventilation, an
Exploring the Indoor Air Quality in the Context of Changing Climate in Residential Buildings—Part A: Developed Measurement Devices of Low-Cost Sensors | 2023 | English | 9 pp
Indoor air quality (IAQ) is influenced by several parameters and the sources of indoor air pollutants are numerous (building materials, occupant behavior, HVAC systems, Outdoor air, etc.).
Numerical Analysis on the Applicability of Air Purifier for Removal of Indoor Viral Contaminants | 2023 | English | 8 pp
Many recent studies have been reported that the novel coronavirus (SARS-CoV-2) can spread through an airborne transmission route.
CFD Modeling of Room Air Flow Effects on Inactivation of Aerosol SARS-CoV-2 by an Upper Room Ultraviolet Germicidal Irradiation (UVGI) System | 2023 | English | 9 pp
Ultraviolet germicidal irradiation (UVGI) inactivates viral aerosols in indoor environments. Upper room UVGI systems use wall or ceiling mounted fixtures to create a disinfection zone above the occupied zone.
Validation of a Simplified Model Predictive Control of a Low Exergy Embedded Heating and Cooling System | 2023 | English | 9 pp
Powerhouse Telemark is a low carbon plus energy project in Porsgrunn, Norway. The building is currently in a commissioning phase, but with most of the building under normal operation.
Evolving Frameworks Towards Identifying Challenges and Opportunities of Indoor Vegetation Systems | 2023 | English | 12 pp
Our planet is rapidly urbanizing, leading to significant biodiversity loss.
Experimental study of exhaust air transfer ratio in a rotary heat recovery ventilation unit with automatic leakage control | 2023 | English | 7 pp
Air leakage in a rotary heat recovery device in air handling unit (AHU) was studied by a laboratory experiment.
Trends in home heating and cooling in the US are resulting in less mixing of air within dwellings, either due to not using central forced air systems, or to reduced loads and runtimes in high performance homes.
Overheating has become a recurring problem in airtight and highly insulated buildings even in moderate climates.
Assessment Of The Covid-19 Contagion Risk In University Classrooms With TRNSYS And TRNFLOW Simulations | 2023 | English | 8 pp
The ongoing covid-19 pandemic has drawn the attention on the importance of providing adequate fresh air to the occupants of the built environment, in particular in educational buildings.
Assessment of Wind Impact on Building Air Leakage Measurements using a Model Scale Experiment | 2023 | English | 9 pp
Nowadays, many countries include requirements for building airtightness in their current national regulations or energy-efficiency programs, mainly for concern about reducing building energy consumption due to air leakage.
BIM-integrated Indoor Aerosol Modeling Based On Outdoor Particles In Germany | 2023 | English | 8 pp
Indoor air quality (IAQ) plays an intrinsic role in occupant comfort, and should be evaluated as a key building performance indicator of early design phases.
Breathing: A New High Efficient Ventilation Concept for Non-residential Buildings | 2023 | English | 8 pp
In order to reduce the primary energy consumption of buildings, highly efficient heat recovery of the HVAC system is indispensable.
Case Study: Heat Recovery and Demand Controlled Ventilation in Industrial Kitchens | 2023 | English | 7 pp
Industrial kitchens have high HVAC load requirements due to high exhaust rates from hoods. Especially in cold climates to heat the makeup air in winter requires high initial and - more importantly - high operating costs.