Đo Đạc Độ Dẫn Nhiệt Của Dung Dịch Chứa Các Nanoparticle Oxit
Tóm tắt
Các nanofluid oxit đã được sản xuất và độ dẫn nhiệt của chúng đã được đo bằng phương pháp dây nóng tạm thời. Kết quả thí nghiệm cho thấy các nanofluid này, chứa một lượng nhỏ các nanoparticle, có độ dẫn nhiệt cao hơn đáng kể so với các chất lỏng tương tự không chứa nanoparticle. So sánh giữa các thí nghiệm và mô hình Hamilton và Crosser cho thấy mô hình có khả năng dự đoán độ dẫn nhiệt của các nanofluid chứa các hạt Al2O3 kết agglomerated lớn. Tuy nhiên, mô hình dường như không đầy đủ cho các nanofluid chứa các hạt CuO. Điều này gợi ý rằng không chỉ hình dạng của các hạt mà cả kích thước cũng được coi là yếu tố quyết định trong việc cải thiện độ dẫn nhiệt của các nanofluid.
Từ khóa
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