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Journals / Artvin Çoruh Üniversitesi Orman Fakültesi Dergisi / 2026 / Cilt: 27 Sayı: 3

Thermal Inertia and Heat Storage Behavior of Hazelnut Shell and Hazelnut Husk Bio-Composites

Fındık Kabuğu ve Fındık Zürufu Biyo-Kompozitlerinin Termal Atalet ve Isı Depolama Davranışının İncelenmesi

Birkut Güler(GİRESUN ÜNİVERSİTESİ)0000-0001-5541-5279
Pages
1–20
Publication Date
2026-09-30
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results demonstrate that both specimen thickness and biomass composition significantly influence the transient thermal response of the developed composites.

📌 3 Key Takeaways

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Objective & Hypothesis:This study experimentally investigated the transient thermal behavior of bio-based composites produced from hazelnut shell, hazelnut husk, and natural oil under constant heat-flux heating followed by natural cooling.
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Key Findings & Data:Composite specimens with thicknesses of 2 cm and 3 cm, together with shell contents of 60%, 70%, and 75%, were prepared to evaluate the effects of specimen geometry and biomass composition on transient heat transfer.
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Conclusion & Impact:The results demonstrate that both specimen thickness and biomass composition significantly influence the transient thermal response of the developed composites.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Biyokütle · Kompozite · Isıl özellikler

Abstract

This study experimentally investigated the transient thermal behavior of bio-based composites produced from hazelnut shell, hazelnut husk, and natural oil under constant heat-flux heating followed by natural cooling. Composite specimens with thicknesses of 2 cm and 3 cm, together with shell contents of 60%, 70%, and 75%, were prepared to evaluate the effects of specimen geometry and biomass composition on transient heat transfer. The specimens were heated under a constant heat flux for 10 min and subsequently cooled under natural convection for 15 min. Surface temperatures were continuously monitored using a Testo 830-T1 infrared thermometer. Reducing the specimen thickness significantly increased the maximum temperature, with the 2 cm shell and husk composites reaching 90.0 °C and 100.0 °C, respectively, compared with 71.5 °C and 81.0 °C for the corresponding 3 cm specimens. The cooling behavior was evaluated using the cooling constant (k) and the thermal time constant (τ). The calculated cooling constants ranged from 3.05 × 10⁻⁴ to 8.85 × 10⁻⁴ s⁻¹, while the corresponding thermal time constants varied between 1130 s and 3279 s. Among the investigated shell-content formulations, the 60% shell composite exhibited the lowest cooling constant and the highest thermal time constant, indicating the greatest thermal inertia. The results demonstrate that both specimen thickness and biomass composition significantly influence the transient thermal response of the developed composites. The proposed bio-based composites exhibit promising potential for use in building insulation materials, passive thermal regulation systems, and sensible heat storage applications, while also providing a sustainable utilization route for hazelnut processing residues.

Özet

Bu çalışmada, fındık kabuğu, fındık zürufu ve doğal yağdan üretilen biyokompozitlerin sabit ısı akısı altında ısıtılması ve doğal taşınımla soğutulması sırasında gösterdikleri zamana bağlı ısıl davranış deneysel olarak incelenmiştir. Numune geometrisinin ve biyokütle bileşiminin geçici ısı transferi üzerindeki etkilerini belirlemek amacıyla 2 cm ve 3 cm kalınlığında, ayrıca %60, %70 ve %75 kabuk oranına sahip kompozit numuneler hazırlanmıştır. Numuneler 10 dakika boyunca sabit ısı akısı altında ısıtılmış ve ardından 15 dakika doğal taşınım koşullarında soğutulmuştur. Yüzey sıcaklıkları Testo 830-T1 kızılötesi termometre kullanılarak sürekli olarak ölçülmüştür. Numune kalınlığının azaltılması maksimum sıcaklığı önemli ölçüde artırmış; 2 cm kalınlığındaki kabuk ve züruf kompozitleri sırasıyla 90.0 °C ve 100.0 °C maksimum sıcaklıklara ulaşırken, 3 cm kalınlığındaki karşılıklarında bu değerler sırasıyla 71.5 °C ve 81.0 °C olarak belirlenmiştir. Soğuma davranışı, soğuma sabiti (k) ve ısıl zaman sabiti (τ) kullanılarak değerlendirilmiştir. Hesaplanan soğuma sabitleri 3.05 × 10⁻⁴ ile 8.85 × 10⁻⁴ s⁻¹, ısıl zaman sabitleri ise 1130 s ile 3279 s arasında değişmiştir. İncelenen kompozisyonlar arasında %60 kabuk içeren kompozit en düşük soğuma sabiti ve en yüksek ısıl zaman sabiti değerlerini göstererek en yüksek ısıl ataleti sergilemiştir. Sonuçlar, hem numune kalınlığının hem de biyokütle bileşiminin kompozitlerin geçici ısıl davranışını önemli ölçüde etkilediğini ortaya koymuştur. Geliştirilen biyokompozitler, özellikle biyobazlı yapı yalıtım malzemeleri ile pasif ısıl düzenleme uygulamalarında kullanılabilecek sürdürülebilir ve çevre dostu alternatif malzemeler olarak önemli bir potansiyele sahiptir.

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Cite This Article

Güler, B. (2026). Thermal Inertia and Heat Storage Behavior of Hazelnut Shell and Hazelnut Husk Bio-Composites. Artvin Çoruh Üniversitesi Orman Fakültesi Dergisi, Cilt: 27 Sayı: 3, 1–20. https://doi.org/10.17474/artvinofd.1921192

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References (23)

  1. Al Miaari, A., & Ali, H.M. (2023). Technical method in passive cooling for photovoltaic panels using phase change material. Case Studies in Thermal Engineering, 49. https://doi.org/10.1016/j.csite.2023.103283
  2. Ayrilmis, N., Yurttas, E., Tetik, N., Özdemir, F., Palanisamy, S., Alagarsamy, A., Ramasamy, S., Sillanpää, M., & Al-Farraj, S.A. (2024). Antibacterial performance of biodegradable polymer and hazelnut husk flour antibacterial biofilm with silver nanoparticles. BioResources, 19(4), 8812–8826. https://doi.org/10.15376/biores.19.4.8812-8826
  3. Bayrakdar Ates, E. (2023). Synthesis of Ni/Clinoptilolite catalyst by modified polyol method for upgrading of bio-oil produced from hazelnut husk pyrolysis. Renewable Energy, 219. https://doi.org/10.1016/j.renene.2023.119560
  4. Cheng, Z., Li, S., Tong, X., Chen, P., Zeng, M., & Wang, Q. (2024). Material preparation and heat transfer characterization of porous graphene aerogel composite phase change material. International Communications in Heat and Mass Transfer, 152. https://doi.org/10.1016/j.icheatmasstransfer.2024.107280
  5. Cuce, P.M., Cuce, E., & Alvur, E. (2025). Advanced thermal insulation plasters derived from hazelnut shell waste: a comprehensive experimental research. Sustainability (Switzerland), 17(18). https://doi.org/10.3390/su17188209
  6. Çöpür, Y., Güler, C., Akgül, M., & Taşçioǧlu, C. (2007). Some chemical properties of hazelnut husk and its suitability for particleboard production. Building and Environment, 42(7), 2568–2572. https://doi.org/10.1016/j.buildenv.2006.07.011
  7. Güler, B., & Aydın Temel, F. (2024). Investigation of value-added charcoal production from full-scale hydrothermal carbonization of hazelnut husk and wood waste. Biomass Conversion and Biorefinery, 14(13), 15119–15127. https://doi.org/10.1007/s13399-023-04191-z
  8. Hoffmann, J.F., Vaitilingom, G., Henry, J.F., Chirtoc, M., Olives, R., Goetz, V., & Py, X. (2018). Temperature dependence of thermophysical and rheological properties of seven vegetable oils in view of their use as heat transfer fluids in concentrated solar plants. Solar Energy Materials and Solar Cells, 178, 129–138. https://doi.org/10.1016/j.solmat.2017.12.037
  9. Li, Z., Zhang, Y., Wang, X., Cao, F., Guo, X., Zhang, S., & Tang, B. (2024a). Thermally-induced flexible composite phase change material with enhanced thermal conductivity. Journal of Power Sources, 603. https://doi.org/10.1016/j.jpowsour.2024.234447
  10. Li, X., Chen, B., Liu, F., Jian, Y., & Wang, H. (2024b). Experimental study on the melting performance of phase change materials embedded with different material skeletons. Applied Thermal Engineering, 236. https://doi.org/10.1016/j.applthermaleng.2023.121873
  11. Manterola-Barroso, C., Padilla Contreras, D., Ondrasek, G., Horvatinec, J., Gavilán CuiCui, G., & Meriño-Gergichevich, C. (2024). Hazelnut and walnut nutshell features as emerging added-value byproducts of the nut ındustry: a review. In Plants, 13 (7). https://doi.org/10.3390/plants13071034
  12. Najafi, M., Kütük, C., Najafi, S., & Balci, M. (2023). Effects of hazelnut husk waste on qualıty parameters of German primrose (Prımula Obconıca Hance). Bangladesh Journal of Botany, 52(3), 829–835. https://doi.org/10.3329/bjb.v52i3.68927
  13. Ozocak, M., & Sisman, C.B. (2024). Development of a new insulation material from hazelnut shells (hazelnut shell insulation board-HSIB). Journal of Elementology, 2024(1), 293–310. https://doi.org/10.5601/jelem.2024.29.1.3187
  14. Rahman, M.M., Maqbool, N., Ay, A., Gülser, C., & Kizilkaya, R. (2024). Role of hazelnut husk compost and phosphate solubilizing bacteria in ımproving productivity and quality parameters of wheat (Triticum aestivum L.) and their effects on some soil biological properties. Communications in Soil Science and Plant Analysis, 55(13), 2042–2058. https://doi.org/10.1080/00103624.2024.2337825
  15. Raza, M., Farhan, A., & Abu-Jdayil, B. (2024). Lignocellulose−based insulation materials: a review of sustainable and biodegradable solutions for energy efficiency. In International Journal of Thermofluids, 24. https://doi.org/10.1016/j.ijft.2024.100844
  16. Sivri, D., Kurel, A., Baytore, D. I., Akdogan, N. G., & Akdogan, O. (2023). Recycling of hazelnut husk; from bio-waste to phyto-assisted synthesis of silver nanoparticles. Chemistry Select, 8(37). https://doi.org/10.1002/slct.202302262
  17. Wang, S., Zhang, D., Li, C., Wang, J., Zhang, J., Cheng, Y., Mei, W., Cheng, S., Qin, P., Duan, Q., Sun, J., & Wang, Q. (2023a). Numerical optimization for a phase change material based lithium-ion battery thermal management system. Applied Thermal Engineering, 222. https://doi.org/10.1016/j.applthermaleng.2022.119839
  18. Wang, X., Cheng, Q., Wu, M., Du, P., Liu, C., & Rao, Z. (2023b). Thermal properties optimization of lauric acid as phase change material with modified boron nitride nanosheets-sodium sulfate for thermal energy storage. Journal of Energy Storage, 61. https://doi.org/10.1016/j.est.2023.106781
  19. Yang, T., King, W.P., & Miljkovic, N. (2021). Phase change material-based thermal energy storage. In Cell Reports Physical Science, 2 (8). https://doi.org/10.1016/j.xcrp.2021.100540
  20. Yang, B., Zhang, X., Ji, J., Jiang, M., & Zhao, Y. (2024). A comprehensive review of phase change material-based wearable devices for personal thermal management: mechanism, location and application functionality. In Applied Thermal Engineering, 257. https://doi.org/10.1016/j.applthermaleng.2024.124416
  21. Yerli, C., Senol, N.D., & Yaganoglu, E. (2023). The changes in yield, quality, and soil properties of turfgrass grown by applying varying levels of hazelnut husk compost and irrigating with wastewater in soils with different textures, and their effects on carbon dioxide emissions from the soil. Water, Air, and Soil Pollution, 234(5). https://doi.org/10.1007/s11270-023-06321-9
  22. Zhang, H., Dong, Q., Lu, J., Tang, Y., Bi, W., Gao, Y., Yang, H., & Wang, J. (2023). Modified sodium acetate trihydrate/expanded perlite composite phase change material encapsulated by epoxy resin for radiant floor heating. Journal of Energy Storage, 60. https://doi.org/10.1016/j.est.2023.107374
  23. Zhu, G., Zou, M., Luo, W., Huang, Y., Chen, W., Hu, X., Jiang, X., & Li, Q. (2024). A polyurethane solid–solid phase change material for flexible use in thermal management. Chemical Engineering Journal, 488. https://doi.org/10.1016/j.cej.2024.150930