Adaptability Analysis of Hollow Bricks with Phase-Change Materials Considering Thermal Performance and Cold Climate

Buildings, Journal Year: 2025, Volume and Issue: 15(4), P. 590 - 590

Published: Feb. 14, 2025

Composite phase-change materials (PCMs) exhibit significant potential for enhancing the thermal performance of building walls. However, previous studies have generally lacked detailed investigations PCM-integrated walls under cold climate conditions. Therefore, in order to evaluate and wall adaptability hollow bricks with composite PCMs climates, a brick model was created by filling PCMs. Then comparative test conducted between PCM-filled conventional non-PCM-filled bricks. The experimental method index evaluation resulted following: (1) Compared bricks, showed an increase approximately 0.99 °C inner surface temperature 3.85 midsection temperature. This demonstrates that can retard rate drop, significantly insulation improvement contributes enhance indoor comfort reduce energy consumption. (2) difference interior exterior surfaces is 23.54 °C, which 5.62 higher than indicates filled possess superior heat storage capacity, effectively reducing loss, aligns principles green design. (3) flow on lower, average reduced 8.57 W/m2. suggests ability moderate flux fluctuations through “peak-shaving valley-filling” effect, contributing consumption enhanced occupant comfort.

Language: Английский

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Enhancing solar greenhouse efficiency through the integration of phase change materials: Thermal regulation and sustainable crop growth

Energy and Buildings, Journal Year: 2025, Volume and Issue: unknown, P. 115667 - 115667

Published: March 1, 2025

Language: Английский

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Drainage Characteristics and Heat Transfer Performance of Fin Surfaces in Desert Greenhouse Environments

Energies, Journal Year: 2025, Volume and Issue: 18(8), P. 2061 - 2061

Published: April 17, 2025

As desertification intensifies, greenhouses in arid regions are increasingly challenged by severe water scarcity and low utilization efficiency. Traditional greenhouse HVAC systems often inadequate efficiently recovering condensate water. This study addressed these challenges investigating, through wind tunnel experiments, the fin angle inlet speed for optimal condensation heat transfer performance of a straight-fin exchanger desert environments. The experimental findings revealed that under low-temperature conditions, vertical fins facilitated gravity-driven droplet removal, resulting maximum amount 524.2 g within 120 min. Conversely, high-temperature 45° optimally balanced turbulent disturbances liquid film stability, producing up to 887.1 same timeframe. Additionally, tests at identified critical 1.5 m/s, beyond which significantly decreased. Furthermore, when inclination reached or exceeded 60°, flow separation occurred, reducing effective area negatively impacting Overall, provides significant insights into conservation sustainable environmental enhancing recovery

Language: Английский

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Study on soil temperature distribution and cold/heat zoning method of solar greenhouse based on thermal superposition principle

Energy, Journal Year: 2024, Volume and Issue: unknown, P. 134222 - 134222

Published: Dec. 1, 2024

Language: Английский

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