太陽熱駆動温水式放射床暖房におけるマクロカプセル化RT52相変化材料の熱負荷シフトに関する複数日実験的証拠
CROSS-DAY EXPERIMENTAL EVIDENCE OF THERMAL-LOAD SHIFTING IN A SOLAR- DRIVEN HYDRONIC RADIANT FLOOR WITH MACROENCAPSULATED RT52 PHASE CHANGE MATERIAL (原題)
Jurabek, Kamolov, Sokhib, Temirov, Marjona, Makhmudova
🤖 gxceed AI 要約
日本語
太陽熱温水式放射床暖房の試作機で、RT52パラフィンを封入した鋼製マクロカプセル管を組み込んだパネルと従来型コンクリートパネルを比較した。3日間の屋外実験で、日中はPCMパネル表面温度が平均1.2K低く抑えられ、熱流反転後3.5〜4.2時間で最大+1.5〜+1.8Kの遅延した昇温が観測された。赤外線カメラでも同様の符号反転が再現され、実太陽条件下での熱負荷シフトが確認された。
English
A solar-driven hydronic radiant-floor prototype with eleven steel macroencapsulation tubes of paraffin RT52 was compared against a conventional concrete panel under real outdoor forcing. Across three days, the PCM panel showed daytime surface-temperature suppression (mean -1.2 K) followed by a delayed positive advantage of up to +1.8 K appearing 3.5-4.2 h after heat-flow reversal. Thermal-camera measurements reproduced the sign transition (R2 = 0.88), demonstrating reproducible thermal-load shifting by the full PCM-integrated assembly.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本のGX文脈では、建築物の省エネ・ZEB化や再生可能エネルギーの自家消費拡大に関わる基礎的知見を提供する。ただし、SSBJ・有報・統合報告書などの開示制度や投資家対応に直接資する内容ではなく、実装段階の技術実証として位置づけられる。
In the global GX context
This study contributes to the global building-decarbonization literature by providing field-validated evidence of PCM-based thermal-load shifting in solar hydronic floors. It is relevant to energy-efficiency standards and demand-side flexibility, but does not directly engage TCFD/ISSB/CSRD disclosure frameworks or transition-finance mechanisms.
👥 読者別の含意
🔬研究者:PCM統合床暖房の実太陽条件下での熱負荷シフトを、流量不確実性に依存しない温度差指標で定量化した点が参考になる。
🏢実務担当者:建築・設備設計者は、日中の冷房負荷平準化と夜間の放熱による暖房効率改善の可能性を、実証データに基づいて検討できる。
🏛政策担当者:省エネ基準やZEB評価において、PCM等の蓄熱技術の効果をどう評価するかの基礎資料になり得る。
📄 Abstract（原文）
A solar-driven hydronic radiant-floor prototype containing a conventional concrete panel and a parallel panel with eleven steel macroencapsulation tubes filled with paraffin RT52 was evaluated under transient outdoor forcing. The analysis was deliberately restricted to experimentally observable temperature differences, so that the principal outcome is independent of branch-flow uncertainty and of non-identifiable latent-heat parameters. Across three independent experimental days, the time-weighted charging-period surface difference ΔTsurf,ch was -1.2 K, -1.4 K, and -1.0 K, giving a day-level mean of -1.2 K. The corresponding return-water difference ΔTret,ch was -0.8 K, -0.9 K, and -0.7 K, with a daylevel mean of -0.8 K. In the two long-duration tests, the daytime suppression was followed by a delayed positive surface response: the maximum PCM-panel advantage reached +1.5 K and +1.8 K, respectively, 3.5 h and 4.2 h after the systemlevel heat-flow reversal. On 3–4 July, the positive surface-temperature advantage persisted for approximately 9.0 h and produced a positive persistence integral of about +11.2 K*h. Independent thermal-camera measurements reproduced the same daytime-negative to nighttime-positive sign transition; after time alignment, the contact-sensor and infrared differentials had R2 = 0.88 and 90% sign concordance. The results demonstrate reproducible thermal-load shifting by the complete PCM-integrated floor assembly under real solar forcing. Because the PCM panel also contains a thicker concrete slab and steel capsules, the observed effect is not interpreted as a direct measurement of RT52 latent heat alone.
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/23321013first seen 2026-10-13 04:12:46 · last seen 2026-10-14 04:34:55
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