The Influence of Indoor Environmental Factors on Sleep Quality: Development of a predictive model for assessing the potential sleep quality in Danish Dwellings
Authors
Lennert, Jens Vormslev ; Jafarian, Aida
Term
4. Term
Education
Publication year
2025
Submitted on
2025-01-08
Pages
69
Abstract
Dette studie undersøger, hvordan indeklima (Indoor Environmental Quality, IEQ) påvirker søvnkvaliteten i boliger. IEQ omfatter termisk komfort (temperatur), indeluftkvalitet (Indoor Air Quality, IAQ), akustisk komfort (støj) og visuel komfort (lys). IAQ (r = 0,88) og termisk komfort (r = 0,78) havde den stærkeste sammenhæng med god søvn, mens støj og lys var sekundære. Studiet introducerer Sleep Quality Assessment Tool, et Excel-baseret værktøj, der vurderer boliger ud fra skrappere grænser for søvnunderstøttende forhold: CO2 ≤ 750 ppm, støj ≤ 20 dB og temperaturer på 18–24°C. Disse grænser er strengere end gældende standarder som BR18 og WELL. Sammenligningen peger på huller i reguleringen, især for natlige forhold og for dynamisk styring af indeklimaet. Anbefalingerne omfatter bedre temperaturregulering, støjsvag ventilation og belysning tilpasset døgnrytmen. Fremtidigt arbejde bør validere resultaterne gennem feltstudier og undersøge realtids-overvågning. Afhandlingen udvikler det første værktøj til at vurdere og forbedre søvnkvaliteten i boliger og giver brugbare indsigter for myndigheder og designere.
This study explores how indoor environmental quality (IEQ) affects sleep quality in homes. IEQ includes thermal comfort (temperature), indoor air quality (IAQ), acoustic comfort (noise), and visual comfort (light). IAQ (r = 0.88) and thermal comfort (r = 0.78) showed the strongest links to better sleep, while noise and light were secondary. The research introduces the Sleep Quality Assessment Tool, an Excel-based model that rates homes against stricter sleep-supportive thresholds: CO2 ≤ 750 ppm, noise ≤ 20 dB, and indoor temperatures of 18–24°C. These limits are tougher than current standards such as BR18 and WELL. The comparison highlights gaps in regulations, especially for night-time conditions and dynamic environmental controls. Recommendations include tighter temperature control, low-noise ventilation, and lighting aligned with the circadian rhythm. Future work should validate the findings in field studies and explore real-time monitoring. The thesis develops what it presents as the first tool for assessing and improving residential sleep quality, offering practical guidance for policymakers and designers.
[This summary has been rewritten with the help of AI based on the project's original abstract]
Keywords
Velbehag ; Søvn ; Soveværelse
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