Effect of window orientation on the thermal performance of electrochromic glass

Case Studies in Thermal Engineering, Journal Year: 2025, Volume and Issue: 69, P. 105990 - 105990

Published: March 3, 2025

Language: Английский

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Spectral analysis of the discoloration process in architectural electrochromic glass

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 28, 2025

Electrochromic glass has been widely employed in buildings, due to its favorable thermal performance, optical properties and adjustability, more attention was paid final states of bleached tinted on the building performance. However, because contradiction between visual environment, there must be their suitable balance, which certain state tinted, not states. To find this thereby, improve application efficacy electrochromic glass, a detail transient spectral analysis done during whole coloring fading processes. Under condition, an experiment platform designed test transmittance, reflectance absorbance under wavelength from 380 nm 2500 nm.The experimental results showed visible light regulation is mainly focused warm spectrum 500 700 nm. In near-infrared region, concentrated 780–1400 range, with relatively minimal adjustment observed for other wavelengths light. For range global reflectivity absorptivity are 0.3–45.4%, 3.6–5.8% 49.5–95.3% lights 780 nm, while they 2.6–31.9%, 3.46–5.18% 63.2–93.3% near infrared The transmittance primarily altered through absorbance. This provides corresponding curves as well fitted change related direction discoloration, but only glass. article data that may used support search light-heat balance architectural applications.

Language: Английский

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Formation analysis of cooling load from envelopes under air-conditioning intermittent operation

Solar Energy, Journal Year: 2025, Volume and Issue: 292, P. 113428 - 113428

Published: March 15, 2025

Language: Английский

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Optimizing the axis ratio of elliptical PCM encasement for enhanced thermal performance in radiant floor heating systems

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 16, 2025

With the rapid development of low-carbon buildings and energy-saving technologies, phase change materials (PCM) have been extensively applied in building floor heating systems due to their excellent thermal energy storage temperature control characteristics. However, traditional encased PCM radiant (RFHS) exhibit drawbacks including slow response, low efficiency, excessive structural layer thickness. This study proposes an innovative solution through CFD numerical simulation: replacing conventional circular encasement with elliptical optimizing axis ratio enhance system's performance reduce mortar thickness, thereby lowering construction costs. The analyzes state PCMs, variations structure, heat flux distribution. results show that as short (a) length decreases, floor's response becomes faster. When a = 1.5 times radius hot water pipe, achieves optimal balance between comfort efficiency. Compared design, this approach not only enhances speed reduces consumption but also decreases thickness by 16.7%. provides theoretical basis for RFHS integrated PCMs holds significant potential engineering applications.

Language: Английский

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Climate adaptation analysis of the thermal performance of dynamic rotating latent-energy-storage envelope (DRLESE) in China

Case Studies in Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 106254 - 106254

Published: May 1, 2025

Language: Английский

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