Thermal characteristics of grooved heat pipe with hybrid nanofluids

Autor:	Seok-Ho Rhi, Woo-Sung Han
Rok vydání:	2011
Předmět:	Transient state Heat pipe Nanofluid Materials science Renewable Energy Sustainability and the Environment Thermal resistance Nanofluids in solar collectors Thermal Heat transfer Thermodynamics Composite material Cooling water temperature
Zdroj:	Thermal Science. 15:195-206
ISSN:	2334-7163 0354-9836
Popis:	In the present study, the specially designed grooved heat pipe charged with nanofluids was investigated in terms of various parameters such as heat transfer rate(50-300 W with 50 W interval), volume concentration(0.005%, 0.05%, 0.1%, and hybrid combinations), inclination(5?, 45?, 90?), cooling water temperature (1?C, 10?C, and 20?C), surface state, transient state and so on. Hybrid nanofluids with different volume concentration ratios with Ag-H2O and Al2O3-H2O were used as working fluids on a grooved heat pipe(GHP). Comparing with the pure water system, nanofluidic and hybrid nanofluidic system shows greater overall thermal resistance with increasing nano-particle concentration. Also hybrid nanofluids make the system deteriorate in terms of thermal resistance. The post nanofluid experimental data regarding GHP show that the heat transfer performance is similar to the results of nanofluid system. The thermal performance of a grooved heat pipe with nanofluids and hybrid nanofluids were varied with driving parameters but they led to worse system performance.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0ffcf67587d118a5eac1643421199e55 https://doi.org/10.2298/tsci100209056h Zobrazit plný text záznamu Plný text ve formátu PDF