Library Subscription: Guest
Home Archives Officers Future meetings American Society of Thermal and Fluids Engineering
Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

The enhanced specific heat capacity of ternary carbonates nanofluids with different nanoparticles

Lixia Sang
Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Tai Liu
Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education and Key Laboratory of Heat Transfer and Energy Conversion, Beijing Municipality, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Abstract

Ternary carbonates with a relative low melting point and a high operating temperature is one of the promising heat transfer fluids for Concentrated Solar Power (CSP). In the present work, ternary carbonates nanofluids of K2CO3-Li2CO3-Na2CO3 (4:4:2, mass ratio) with nanoparticles were prepared by using two step solution method. The specific heat capacity of ternary carbonates nanofluids with different nanoparticles (SiO2, CuO, TiO2, AhO3) or SiO2 with different size (5, 20, 30, 60nm) were investigated. The results show that SiO2 nanoparticles are the most effective additive among of the chosen nanoparticles in enhancing the specific heat capacity of ternary carbonates. The enhancement of specific heat capacity of ternary carbonates is 78.0-116.8% in the range of 500-540°C when adding SiO2 in the range of 5 to 30nm. The enhancement of specific heat capacity of ternary carbonates nanofluids with CuO, TiO2 and AhO3 are 50.6-73.9%, 31.1-56.5% and 50.6-66.5% in the range of 500-540°C, respectively. The great enhancement of specific heat capacity is also related to the uniform heating of samples solution in an electric thermostatic drying oven during preparation. It is proved that there is no chemical reactions between ternary carbonates and the added nanoparticles. The difference in the enhanced specific heat capacity is mainly depended on the dispersive state of nanoparticles and the resulting amount of needle-like nanostructures in ternary carbonates nanofluids.

Purchase $20.00 Check subscription Publication Ethics and Malpractice Recommend to my Librarian Bookmark this Page