| Yazarlar (1) |
Dr. Öğr. Üyesi Aslı TİKTAŞ
Kırşehir Ahi Evran Üniversitesi, Türkiye |
| Özet |
| This study presents a novel wind-driven passive cooling strategy tailored for off-grid polar shelters, incorporating an inline-through-flow Phase Change Material (PCM) chamber within the ventilation pathway. Unlike conventional buoyancy-driven or sealed systems, the proposed configuration actively harnesses wind-induced pressure differentials to sustain cross-ventilation, while simultaneously enabling latent thermal buffering. A comprehensive CFD-based thermofluid and exergy analysis was conducted to evaluate temperature distribution, flow f ield dynamics, entropy generation, and exergy destruction rates across multiple PCM duct configurations and shelter layouts. Simulation results demonstrated that the proposed system achieved a peak indoor temperature reduction of up to 3.5 ◦ ◦ C during high solar gain periods and maintained operative temperatures within the ASHRAE comfort band for 2190 additional hours per year (60 % longer) compared with conventional designs. Seasonal simulations covering Polar Summer, Autumn Transition, Polar Winter, and Late Polar Winter revealed that even under extreme low-temperature conditions without active heating, occupant-level temperatures of ≥ 19.5 C were maintained through latent heat release, aerodynamic ventilation throttling, and buoyancy-assisted thermal stratification. A detailed performance comparison with recent studies for PCM-based passive or hybrid cooling strategies, showed that the proposed system uniquely integrates passive ventilation control with inline PCM-based thermal regulation, delivering year-round adaptability and wind resilience. An economic feasibility assessment demonstrated an internal rate of return of 44.3 % and a 3.6-year payback period, with significant cost-effectiveness in remote polar regions due to high latent heat capacity, passive PCM regeneration, and modular, low-maintenance design. Moreover, the inline PCM configuration enabled full melting within the first 100 h of operation, with latent heat absorption stabilizing indoor thermal conditions across seasonal cycles. Moreover, exergy destruction rate was minimized to ~ 92 W, and entropy generation hotspots were significantly mitigated through optimized vortex structures. The design also ensured a ventilation rate exceeding 2.0 ACH at wind speeds as low as 1.5 m/s, without requiring mechanical components. The findings confirm the effectiveness of the proposed configuration in delivering zero-energy, high-performance thermal comfort under extreme conditions. This work provides a scalable and maintenance-free solution for climate-resilient shelter design in polar and other off-grid environments. |
| Anahtar Kelimeler |
| Wind-driven ventilation Passive cooling Polar shelter Phase change material (PCM) Thermal comfort Exergy analysis Off-grid architecture |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale |
| Dergi Adı | Energy Conversion and Management |
| Dergi ISSN | 0196-8904 Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Dergi Grubu | Q1 |
| Makale Dili | İngilizce |
| Basım Tarihi | 12-2025 |
| Cilt No | 346 |
| Sayı | 120481 |
| Doi Numarası | 10.1016/j.enconman.2025.120481 |
| Makale Linki | https://doi.org/10.1016/j.enconman.2025.120481 |
| Atıf Sayıları |
