Application of silver nanofluid containing oleic acid surfactant in a thermosyphon economizer

被引:41
作者
Parametthanuwat, Thanya [1 ]
Rittidech, Sampan [1 ]
Pattiya, Adisak [2 ]
Ding, Yulong [3 ]
Witharana, Sanjeeva [3 ]
机构
[1] Mahasarakham Univ, Heat Pipe & Thermal Tools Design Res Unit HTDR, Div Mech Engn, Fac Engn, Maha Sarakham, Thailand
[2] Mahasarakham Univ, BERL, Div Mech Engn, Fac Engn, Maha Sarakham, Thailand
[3] Univ Leeds, Inst Particle Sci & Engn, Leeds, W Yorkshire, England
来源
NANOSCALE RESEARCH LETTERS | 2011年 / 6卷
基金
英国工程与自然科学研究理事会;
关键词
HEAT-TRANSFER CHARACTERISTICS; THERMAL-CONDUCTIVITY; NANO-FLUID; ENHANCEMENT; PERFORMANCE;
D O I
10.1186/1556-276X-6-315
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This article reports a recent study on the application of a two-phase closed thermosyphon (TPCT) in a thermosyphon for economizer (TPEC). The TPEC had three sections of equal size; the evaporator, the adiabatic section, and the condenser, of 250 mm x 250 mm x 250 mm (W x L x H). The TPCT was a steel tube of 12.7-mm ID. The filling ratios chosen to study were 30, 50, and 80% with respect to the evaporator length. The volumetric flow rates for the coolant (in the condenser) were 1, 2.5, and 5 l/min. Five working fluids investigated were: water, water-based silver nanofluid with silver concentration 0.5 w/v%, and the nanofluid (NF) mixed with 0.5, 1, and 1.5 w/v% of oleic acid (OA). The operating temperatures were 60, 70, and 80 C. Experimental data showed that the TPEC gave the highest heat flux of about 25 kW/m(2) and the highest effectiveness of about 0.3 at a filling ratio of 50%, with the nanofluid containing 1 w/v% of OA. It was further found that the effectiveness of nanofluid and the OA containing nanofluids were superior in effectiveness over water in all experimental conditions came under this study. Moreover, the presence of OA had clearly contributed to raise the effectiveness of the nanofluid.
引用
收藏
页码:1 / 10
页数:10
相关论文
共 27 条
[1]   Heat pipe heat exchanger for heat recovery in air conditioning [J].
Abd El-Baky, Mostafa A. ;
Mohamed, Mousa M. .
APPLIED THERMAL ENGINEERING, 2007, 27 (04) :795-801
[2]  
[Anonymous], 1996, FUNDAMENTAL HEAT MAS
[3]  
ATIPONG N, 2010, INT COMMUN HEAT MASS, V37, P287
[4]   Thermal applicability of two-phase thermosyphons in cooking chambers-experimental and theoretical analysis [J].
da Silva, AK ;
Mantelli, MBH .
APPLIED THERMAL ENGINEERING, 2004, 24 (5-6) :717-733
[5]  
Faghri Amir., 1995, HEAT PIPE SCI TECHNO
[6]  
Fernando H., 2005, INT J THERM SCI, V45, P504
[7]   Production and dispersion stability of nanoparticles in nanofluids [J].
Hwang, Yujin ;
Lee, Jae-Keun ;
Lee, Jong-Ku ;
Jeong, Young-Man ;
Cheong, Seong-ir ;
Ahn, Young-Chull ;
Kim, Soo H. .
POWDER TECHNOLOGY, 2008, 186 (02) :145-153
[8]   Investigation on the effect of filling ratio on the steady-state heat transfer performance of a vertical two-phase closed thermosyphon [J].
Jiao, B. ;
Qiu, L. M. ;
Zhang, X. B. ;
Zhang, Y. .
APPLIED THERMAL ENGINEERING, 2008, 28 (11-12) :1417-1426
[9]   Experimental investigation of silver nano-fluid on heat pipe thermal performance [J].
Kang, Shung-Wen ;
Wei, Wei-Chiang ;
Tsai, Sheng-Hong ;
Yang, Shih-Yu .
APPLIED THERMAL ENGINEERING, 2006, 26 (17-18) :2377-2382
[10]  
KHANDEKAR S, 2008, THERM SCI, V47, P695