LoginThe primary purpose of ventilation and air-conditioning system is to ensure internal comfort conditions through a continuous supply of air and maintaining the assumed indoor parameters.
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
Air Distribution Assessment - Ventilation Systems with Different Types of Linear Diffusers | 2023 | English | 9 pp
The Indoor Environmental Quality in Schools in South Tyrol: Insights from the Field Measurements, and Initial Design of the Improvements | 2023 | English | 8 pp
Nowadays people spend an average of 87% of their time inside buildings. Schools are a particularly delicate type of buildings for several reasons.
Indoor Environmental Parameters: Considering Measures of Microbial Ecology in the Characterization of Indoor Air Quality | 2023 | English | 13 pp
Urbanization has led to systemic environmental factors that degrade air quality and microbial diversity, negatively impacting human health and wellbeing.
Integrating Indoor Soundscape Approach into IEQ Research: Acoustic Comfort in Naturally Ventilated Residential Buildings | 2023 | English | 8 pp
The present study investigates acoustic comfort in naturally ventilated residential buildings through an indoor soundscape approach.
Investigating Uncertainty in the Relationship between Indoor Steady-State CO2 Concentrations and Ventilation Rates | 2023 | English | 8 pp
The steady-state concentration of occupant generated carbon dioxide (CO2) is used in some applications as an indicator of compliance with a required ventilation rate.
Low-Energy Retrofitted Homes from their Occupants’ Perspectives: Indoor Environmental Quality and Satisfaction with Heating and Mechanical Ventilation Systems | 2023 | English | 8 pp
This study aims at obtaining feedback from occupants of low-energy retrofitted houses concerning the indoor environmental quality (IEQ) and the building systems in their homes.
Measurements of Exhaled Airflow Velocity Via Human Coughs Using Particle Image Velocimetry (PIV) | 2023 | English | 8 pp
The sudden global outbreak of coronavirus diseases 2019 (COVID-19) has infected over seventy million people and resulted in over one million deaths by the end of 2020, posing a significant threat to human health.
Metrics on perception, concentration and characterization of Indoor Air Quality in a University Library | 2023 | English | 9 pp
A longitudinal study was conducted to establish metrics on perception, concentration and characterization of indoor air quality (IAQ) at a university library building.
Monitoring Indoor Environmental Quality (IEQ) in Buildings with Distributed Sensing | 2023 | English | 8 pp
A major challenge in the built environment is the integration of energy and indoor environmental quality in the optimization of existing buildings.
Numerical analysis of airflow dynamics generated by human coughing based on PIV experimental results | 2023 | English | 9 pp
Respiratory infections are transmitted by droplets and droplet nuclei generated by human coughing, sneezing, and talking.
On the Impact of Highly Reflective Materials on Thermal Comfort and Energy Efficiency | 2023 | English | 10 pp
The materials that compose the built environment have a key role in the resulting energy demand since their thermal properties affect the heat transfer processes.
Open or Closed? Use of Windows and Doors at Home: Ventilation Rates in Occupied Dwellings | 2023 | English | 8 pp
Ventilation in dwellings is likely to be impacted by configurations of windows and internal doors, but there is little empirical research investigating this in occupied homes.
Predicting Older People’s Thermal Sensation by a New Integrated Physiological-based and Data-driven Model | 2023 | English | 11 pp
Due to age-related physiological changes, older people are more vulnerable than young people to heat or cold conditions.
The fan pressurization method is a common practice in many countries for measuring the air leakage of houses. The test results are sensitive to uncertainties in the measured pressures and airflows.
Relevance of CO2 based IAQ Indicators: Lessons from a Long-term Monitoring of two Nearly Zero Energy Houses | 2023 | English
France is committed to minimizing its greenhouse gas emissions by focusing on the most energy-consuming sector, the residential and tertiary building sector.
Restriction of Air Infiltration by an Air Curtain Optimized with Secondary Jets—A Numerical Investigation | 2023 | English | 8 pp
Infiltration of unconditioned air through access openings and entrance doors with high recurrence can cause detrimental impacts to the energy performance, air quality and thermal comfort of buildings.
Simulating Ventilation for Indoor Air Quality of Non-domestic Environments in London Schools: A Building-based Bottom-up Approach | 2023 | English | 8 pp
In the UK, people spend over 90% of a day indoors.
Ventilation systems assume that the outdoor air quality is better than the indoor air quality at al times as they use outdoor air to dilute pollutants emitted by humans, activities, the building itself and other objects.
Smart Ventilation Performance Durability Assessment: Preliminary Results from a Long-Term Residential Monitoring of Humidity-based Demand-Controlled Ventilation | 2023 | English | 8 pp
Humidity-based DCV systems have been widely used in France for 35 years and are considered as a reference system, including for low-energy residential buildings.
SMART-RENO-IEQ: Exploring the Capabilities of Low-Cost Sensors to Evaluate PM2.5 Exposure in Single-Family Houses | 2023 | English | 8 pp
In building energy renovation, the notion of payback time of the investments is often presented as the only goal.