Evaluation of Indoor Environmental Quality and Thermal Environment in Airtight Energy-Efficient Naturally Ventilated Dwellings

Noticeably higher concentrations of gaseous pollutants were measured in bedrooms than living rooms, and in winter than summer, where p-values were found to be of a stringent significance (average p = 0.008). PM2.5 concentrations were found to be exceeding the WHO 24-h average threshold of 15 µg/m3 in kitchens for the week-long monitoring time (92% in winter, 51% in summer).

Exploring the impact of the urban modified albedo on the indoor temperature and the ventilative cooling potential in a typical Italian residential building

Urban heat island, with the associated urban overheating, is a well-documented phenomenon, which demonstrates the hazard related to local climate change and the related negative impacts at environment, economic, social and public health level, with heavier consequences on the low income and more fragile segment of the population. The phenomenon takes origin by the positive thermal balance in the urban built environment mainly, depending on the synergic effect of different causes.

Effects of closed vertical void on natural ventilation in double-loaded apartment building

We proposed a new design of an affordable apartment with a closed-vertical void to improve the indoor natural ventilation especially for the leeward side of the building and constructed a full-scale experimental house in Indonesia in 2020. This paper analyses the effects of the proposed ventilation system through field measurements in the experimental house. In the experimental house, the vertical-closed void with a width of 2.85 m was designed between the two rows of units.

On the impact of night ventilation through motorized windows on the energy and thermal performance of office buildings

Global and local climate changes affect the energy performance of buildings, especially during the warm season, with relevant increase of cooling uses in mechanically cooled buildings and discomfort hours in naturally ventilated ones. The ventilative cooling is proved to be a promising strategy to tackle this threat, however installing new ventilation systems in existing buildings is challenging in technical and economic terms. The strategy can be also pursued by motorized windows duly operated.

Experimental study on the dehumidification performance of a window-type liquid desiccant ventilation system

This study proposes the feasibility of a window-type liquid desiccant ventilation system for residential buildings. Using a LiCl solution, the system was designed and experimentally evaluated under hot and humid conditions. The results indicated a 19% reduction in relative humidity and effective latent heat removal, showing significant dehumidification performance. The system maintained its dehumidification performance even with reduced humidity, suggesting improved thermal comfort.

Evaluation of the impact of window use on the heating energy use and IEQ in dwellings based on simulations

Window opening behaviour can have an important impact on residential energy use, especially in energy efficient dwellings. A few studies indicated that the window use may be a habitual behaviour, meaning that the behaviour is performed without conscious thought as a consequence of frequently repeating this action. Verbruggen et al. (2021a) developed an event-based residential occupant behaviour model (EROB) based on habits as present in Belgian dwellings, including a window opening model.

The Impact of Simplified Window and Exhaust Fan Assumptions on Model-Based Predictions of Inter-Zonal Air Flow and Contaminant Transport in Multifamily Buildings

In residential buildings, the indoor air quality can be significantly affected by ventilation measures initiated by occupants, including the operation of windows and in-unit exhaust fans in kitchens and bathrooms. The outcome of these measures can be highly variable and difficult to accurately characterize in building simulation frameworks. Consequently, many simulations simplify these factors by disregarding window opening behaviours and using fixed schedules for exhaust fan operation across all residential units.

Exploring the Effect of Post-Pandemic Behaviour of Occupants on Indoor Air Quality and Comfort Conditions in Existing Residential Buildings in Turkiye

This study aims to investigate the impact of changing residential user behaviour after the Covid-19 pandemic in 2020-2021 on indoor health and comfort conditions. In this context, user behaviour-focused studies conducted before 2020, the year of the pandemic, and behavioural patterns that changed with the pandemic will be discussed comparatively.

Applying a composite indoor environmental quality indicator to Danish office spaces: The TAIL rating scheme

A composite rating scheme for indoor environmental quality (IEQ) can help provide a summary picture of buildings for occupants, inform the building managers regarding IEQ performance that need attention, and raise awareness on regarding the importance of IEQ parameters. The TAIL IEQ rating scheme has been designed to communicate such aspects in a simple, easy to use manner. 

Calibration methodology for combined heating and ventilation models

By 2050, Europe aims for energy-neutral buildings, necessitating effective integration of renewable energy sources and smart grid management. To address peak energy demands and prevent grid congestion, building-level energy management is crucial. This paper presents a stepwise calibration methodology for hybrid building models, enhancing flexibility in HVAC systems and thermal buffers.   

Pages