Supporting Sustainable Senior Housing: Preliminary Assessment of Predicted Thermal Comfort in a Timber-Based Prototype Building in Poland
Year: 2026
Type: article
Abstract: Population ageing and the need to provide affordable, healthy, and energy-efficient housing represent important sustainability challenges in many European countries. Sustainable senior housing should not only reduce environmental impacts through low-carbon construction technologies but also ensure high indoor environmental quality and occupant well-being. This paper presents a preliminary assessment of predicted thermal comfort and local thermal discomfort in a prototype senior home constructed a prefabricated timber-based building system incorporating renewable and recycled materials and designed to support low operational energy demand. The research forms part of a broader development study of technology, in which indoor thermal conditions were monitored in a prototype building consisting of two 30 m2 residential units intended for older adults. Predicted thermal comfort was evaluated using the PMV (Predicted Mean Vote) and PPD (Predicted Percentage of Dissatisfied) indices together with local thermal discomfort criteria. The analysis was based on short-term winter and summer measurement campaigns conducted in the prototype building. The results indicated category B thermal environment conditions in both winter and summer according to ISO 7730. In winter, local discomfort associated with a cool floor corresponded to category C, while summer conditions met category B requirements without significant local discomfort. The findings provide preliminary evidence that timber-based low-carbon construction technologies can support acceptable indoor thermal conditions while addressing environmental and social sustainability objectives related to an ageing population. The study also identifies the need for longer monitoring campaigns and future investigations involving older occupants to validate actual thermal sensation and further optimize sustainable senior housing solutions. Since the building was unoccupied during the measurements, the results should be interpreted as a prediction of predicted thermal comfort conditions rather than an assessment of thermal sensations experienced by older adults.
Source: Sustainability
Institutions: Warsaw University of Life Sciences, University of Coimbra
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,896
OpenAlex ID: W7170193372