Improving the knowledge on uncertainty for fan pressurization measurement is of first importance. It allows to assess the reliability of the measurement, which is essential when comparing the results with benchmarks or standards, but it also gives a better understanding, and thus a chance of improving, the measurement procedure. In this context, recent studies on alternative regression techniques highlights the importance of identifying and quantifying the sources of uncertainty.

Gas-phase air cleaners can be used to either reduce occupant dissatisfaction for the same outdoor air flow rate or to reduce the outdoor air flow rate for the same resulting occupant satisfaction based on its clean air delivery rate (CADR). The latter lowers the required ventilation rate for the same indoor air quality and can thus lead to a reduction in energy use for preheating/cooling and from transporting the outside air. However, there is no current method or metric for determining the energy benefit of installing a portable air cleaner.

This manuscript discusses the energy-saving benefits of gas-phase air cleaning in Nordic buildings. Ventilation systems are crucial in creating a healthy and comfortable indoor environment. These systems account for around 30% of building heat losses in cold climate regions. Indoor emissions from materials, occupants, and outdoor pollutants are key to ensuring acceptable indoor air quality levels. Therefore, this study focuses on using gas-phase air cleaning technologies in low-energy centralized air handling units.

Indoor air pollution is a significant concern due to its adverse effects on human health and productivity. With people spending most of their time indoors, exposure to indoor air contaminants can lead to various health issues, including respiratory problems, cardiovascular diseases, and even an increased risk of lung cancer and premature mortality. Additionally, poor indoor air quality can result in short-term symptoms like headaches, eye and throat irritation, fatigue, and asthma, impacting workplace productivity and absenteeism.

International Energy Agency (IEA) Annex 78 was launched in 2018.

Due to global warming, severe problems of buildings overheating during summer in temperate and hot climates arise. Thus, there is an increasing use of air conditioning. However, alternative passive and soft cooling systems exist to address comfort and energy savings issues, such as natural ventilation or ceiling fans, that consume less energy. Although they are well-known today, their use remains under-enhanced.

Over time with thermal and energy regulations, buildings are increasingly insulated and airtight to control better the heat exchanges between the indoor and outdoor environments. The primary function of the mechanical ventilation system is to ensure healthy air by diluting odours and humidity with fresh air. However, in many situations, windows opening can be much more effective in terms of thermal comfort, air quality, or release heat loads due to a higher air change rate than the mechanical ventilation system itself.

Comfort modelling is a critical scientific barrier to reaching better thermal satisfaction in buildings. It allows designers to combine different cooling systems better to target comfortable low-energy buildings in hot and tropical climates. Increasing computer performance offers new perspectives to use more refined thermo-physiological models against traditional normative ones. Also, new types of coupled cooling alternatives arise and set a need for adequate comfort assessment models.

In this work, we propose a method to couple the behaviour models developed with Python in a previous paper with the dynamic thermal simulation software EnergyPlus, an advanced code used in research and design. The proposed coupling method is applied to the thermal model of an office building situated in the humid tropical climate of Reunion Island after calibrating and validating it with measured temperature and relative humidity data.

In the United States, the realm of building enclosure design and commissioning is separate and distinct from the realm of mechanical design and commissioning. This paper will illustrate how and why these disciplines have been historically separated and outline the consequences of this division and describe the opportunity that a closer relationship between the two represents in terms of costs and environmental impact.