Evaluating the Thermal Conductivity of Hemp-Based Insulation DOI Open Access
Thomas Fiedler, Jan Skov Pedersen

Materials, Journal Year: 2025, Volume and Issue: 18(8), P. 1723 - 1723

Published: April 9, 2025

This study evaluates the thermal conductivity of hemp-based insulation materials, focusing on loose bulk mixtures hemp fibre and hurd. Transient Plane Source (TPS) measurements were employed to assess these with a controlled variation in fibre-to-hurd ratio density. Samples from various suppliers, including those different diameters hurd contents, tested. The results indicate conductivities ranging 0.055 0.065 W/mK, demonstrating good performance. also highlights influence sample compression conductivity, higher leading both increased density conductivity. When compared conventional materials glass wool polystyrene, exhibited approximately double However, same resistance (R-value) could be achieved by increasing thickness insulation.

Language: Английский

Experimental and Numerical Investigation of Heat Transfer Characteristics of Double-Layer Phase Change Walls for Enhanced Thermal Regulation in Summer Climates DOI Creative Commons
Pengfei Qin,

Hairuo Wang,

Nanbo Gong

et al.

Buildings, Journal Year: 2025, Volume and Issue: 15(6), P. 962 - 962

Published: March 19, 2025

This study employs the effective heat capacity method within COMSOL simulation framework to analyze thermal performance of double-layer phase-change walls under typical summer climatic conditions in Zhengzhou, Henan Province. The model considers a wall structure with total thickness 100 mm and height 300 mm, where exterior surface represents outdoor environment, interior indoor top bottom boundaries are assumed be adiabatic. A highly refined triangular mesh ensures numerical stability solution accuracy. Special attention is given influence Micro-PCM content on storage characteristics. Simulation results demonstrate that increasing substantially enhances regulation walls. At volume fraction 15%, peak temperature reduced by 4.33 °C compared conventional wall, while attenuation factor increases 16.88. Furthermore, mean delay extends 440 min, amplitude decreases 1.13 °C, instantaneous flux 13.24 W/m2. These findings highlight significant latent superior modulation walls, offering valuable technical reference for design energy-efficient building envelope systems.

Language: Английский

Citations

1
Experimental study on the thermal performance of a hut integrated with phase change material combined with an active heating system DOI
Zhuqing Luo,

Hongtao Xu

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 125968 - 125968

Published: Feb. 1, 2025

Language: Английский

Citations

0
Energy conservation and CO2 mitigation potential through PCM integration in building envelopes: Effect of façade orientation DOI Creative Commons
Ekrem Tunçbilek, Di Wang, Müslüm Arıcı

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Language: Английский

Citations

0
Experimental Study on Fire Resistance of Phase Change Energy Storage Concrete Partition Walls DOI Creative Commons
Mei-Chun Zhu,

Jiangang Li,

Ying Wang

et al.

Fire, Journal Year: 2025, Volume and Issue: 8(4), P. 128 - 128

Published: March 27, 2025

Phase change material (PCM) concrete walls represent a new type of energy storage wall. It is great significance to study the fire resistance PCM ensure safety these kinds components in service. For this reason, tests on eight partition wall specimens under conditions ISO-834 standard curve were carried out. The tested structures included solid and double-layer with an air gap. used was paraffin phase microcapsules, which replaced fine aggregate according principle equal volumes, at replacement proportions 0%, 7%, 10%, 14%. test results showed that explosive spalling occurred when specimen 10% proportion heated for 31 min, other seven met integrity requirements after heating 90 min. 100 mm thick ordinary did not meet thermal insulation addition use structure gap can both improve wall’s performance; however, it case that, greater amount used, better performance reasons spalled are discussed. This provides critical insights into optimizing content design fire-safe energy-efficient buildings, offering practical guidance sustainable construction practices.

Language: Английский

Citations

0
Finite Element and Genetic Algorithm-Based Optimization of Phase Change Material Integration for Passive Thermal Regulation in Studio Apartments in Portugal DOI Creative Commons
Ajitanshu Vedrtnam, Kishor Kalauni, Nelson Soares

et al.

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112647 - 112647

Published: April 1, 2025

Language: Английский

Citations

0
Numerical analysis of thermal performance in Phase Change Material (PCM) melting within rectangular and square enclosures: Impact of design parameters DOI
Faroogh Garoosi, Apostolos Kantzas,

Mazda Irani

et al.

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 136185 - 136185

Published: April 1, 2025

Language: Английский

Citations

0
A systematic review on the application progress of phase change materials in energy piles DOI
Ali M. Onaizi, Waiching Tang, Ghasan Fahim Huseien

et al.

Applied Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 126630 - 126630

Published: April 1, 2025

Language: Английский

Citations

0
Evaluating the Thermal Conductivity of Hemp-Based Insulation DOI Open Access
Thomas Fiedler, Jan Skov Pedersen

Materials, Journal Year: 2025, Volume and Issue: 18(8), P. 1723 - 1723

Published: April 9, 2025

This study evaluates the thermal conductivity of hemp-based insulation materials, focusing on loose bulk mixtures hemp fibre and hurd. Transient Plane Source (TPS) measurements were employed to assess these with a controlled variation in fibre-to-hurd ratio density. Samples from various suppliers, including those different diameters hurd contents, tested. The results indicate conductivities ranging 0.055 0.065 W/mK, demonstrating good performance. also highlights influence sample compression conductivity, higher leading both increased density conductivity. When compared conventional materials glass wool polystyrene, exhibited approximately double However, same resistance (R-value) could be achieved by increasing thickness insulation.

Language: Английский

Citations

0