Experimental investigation of air-based active-passive system for cooling application in buildings

Zavrl, Eva (avtor), El Mankibi, Mohamed (avtor), Dovjak, Mateja (avtor), Stritih, Uroš (avtor)

Due to the consequences of global warming, cooling of lightweight buildings is one of the main future challenges. The study presents an active-passive system (APS) with phase change material (PCM) plates integrated into the internal wall and ceiling substructure which during the day cools the indoor space passively. During the night, the air gap is ventilated actively to improve the PCM solidification process. The APS was experimentally tested in two identical test cells, PCM modified (cell-A) and reference cell (cell-B). Two different types of scenarios were investigated. First type tested the cooling effect of the PCM during the daytime cycle, determined by the temperature difference between the cell-B and cell-A. The same amount of heat was simultaneously added to both cells which was navigated by the setpoint air temperature in the cell-B (26°C, 30°C, 30°C with background ventilation, 35°C, TRY Ljubljana, TRY Rome and heatwave Ljubljana). Second type tested the PCM solidification time during the nighttime cycle (inlet air temperature (Tai) of 15°C, 16°C, and 17°C). The results showed that PCM plates provided the largest cooling effect at in 35°C-scenario. The complete solidification of PCM was achieved at Tai of 16°C. The system is adequate for Mediterranean summer conditions.

• Jezik: Angleški jezik
• Ključne besede: nightime ventilation, phase change materials, cooling, overheating reductions, ventilation, thermal energy storage, ventilated air gap, PCM integrated building elements
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Datum objave: 21.08.2022
• Leto izida: 2022
• Št. strani: 13 str.
• Številčenje: Vol. 85
• PID: 20.500.12556/RUL-140154
• UDK: 620.9:697
• ISSN pri članku: 2210-6715
• DOI: 10.1016/j.scs.2022.104031
• COBISS.SI-ID: 117204483
• Datum objave v RUL: 12.09.2022

Gradivo je del revije

• Naslov: Sustainable cities and society
• Založnik: Elsevier
• ISSN: 2210-6715
• COBISS.SI-ID: 16177461

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nočno prezračevanje, fazno spremenljivi materiali, hlajenje, reševanje pregrevanja, prezračevanje, zalogovniki toplote, prezračevana zračna plast, PCM integrirani v stavbne elemente

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0223
• Naslov: Prenos toplote in snovi

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0158
• Naslov: Gradbene konstrukcije in gradbena fizika