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A development of a measurement method for the particle size distribution before and after the air passes through a PFT integrated ventilation system: A comparative LCA and LCC analysis of a conventional ventilation system with traditional filtermedia and a PFT filter-integrated ventilation system
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems.
2025 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Utveckling av en mätmetod för partikelstorleksfördelning före och efter att luften passerar genom ett PFT integrerat ventilationssystem : En jämförande LCA- och LCC-analys/studie av ett konventionellt ventilationssystem med traditionellt filtermedia och ett PFT filterintegrerat ventilationssystem (Swedish)
Abstract [en]

This study investigates a filter based on Perpetual Filtration Technology (PFT), developed by Airission, and its ability to remove particles from ventilation air in a commercial kitchen environment. In parallel, a Life Cycle Assessment (LCA) and aLife Cycle Costing (LCC) analysis were conducted to evaluate the filter’s environmental impact and cost over its full lifespan. The results show that the filter performs as intended and effectively reduces particle concentrations, particularly for sizes ≥1μm. However, the reduction of the smallest particles (0.3μm) was limited. The LCA shows that the usage phase accounts for the largest climate impact, mainly due to electricity consumption. The LCC analysis indicates a high initial cost but low operational costs thanks to the filter’s self-cleaning function. The PFT system shows strong potential as an alternative to conventional filters in environments with high particle generation. In settings with strict air purity requirements, such as hospitals, supplementary HEPA filtration may be necessary.

Abstract [sv]

Denna studie undersöker ett filter med Perpetuell Filtreringsteknologi (PFT), utvecklat av Airission, och dess förmåga att avskilja partiklar från ventilationsluft i en kommersiell köksmiljö. Parallellt genomförs en livscykelanalys (LCA) och en livscykelkostnadsanalys (LCC) för att utvärdera filtrets miljöpåverkan och kostnader över dess livslängd. Resultaten visar att filtret fungerar som avsett och effektivt reducerar partikelhalter, särskilt för storlekar ≥1μm. Däremot var reduktionen för de minsta partiklarna (0,3μm) begränsad. LCA visar att användningsfasen står för den största klimatpåverkan, främst på grund av elförbrukning. LCC-analysen pekar på hög engångskostnad menlåg driftkostnad tack vare självrengörande funktion. PFT-systemet visar god potential som alternativ till konventionella filter i miljöer med höga partikelhalter. För miljöer med krav på ultraren luft, som sjukhus, kan komplettering med HEPA-filter behövas.

Place, publisher, year, edition, pages
2025.
Series
TRITA-CBH-GRU ; 2025:307
Keywords [en]
Ventilation, particle filtration, self-cleaning filter, perpetual filtration technology, LCA, LCC, air quality, energy savings, exhaust air, supply air
Keywords [sv]
Ventilation, partikelfiltrering, självrengörande filter, Perpetual filtration technology, LCA, LCC, luftkvalitet, energibesparing, frånluft, tilluft
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:kth:diva-369703OAI: oai:DiVA.org:kth-369703DiVA, id: diva2:1997713
External cooperation
Airission
Subject / course
Medical Engineering
Educational program
Bachelor of Science in Engineering - Medical Technology
Supervisors
Examiners
Available from: 2025-11-17 Created: 2025-09-14 Last updated: 2025-11-17Bibliographically approved

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