Influences of alumina and fly ash nanofluid usage on the performance of recuperator including heat pipe bundle

Sözen, Adnan; Öztürk, Ahmet; Özalp, Mehmet; Çiftçi, Erdem

doi:10.1007/s13762-018-1832-6

Cited by 19 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…By using multiple regression analysis, the response (e) was correlated with the four independent variables using the second-order quadratic polynomial as per equation (12) The regression coefficients for the statistically significant models are tabulated in Table 4. The expansion of equation (12) led to (15) terms as per equation (13) The Design Expert software recommended 5 significant terms viz. the constant, B, AD, BC and B 2 .…”

Section: Response Surface Modellingmentioning

confidence: 99%

“…heating, ventilation and air conditioning (HVAC) systems, sorption and vapor-compression heat pumps, cooling of central processing units, power plant cooling towers, steam condensers, recuperators, domestic heating, solar water heating, solar desalination systems, solar thermal power generation, thermal energy storage, thermal collector as well as for waste heat recovery units, automobiles etc. 1,2,[6][7][8][9][10][11][12][13][14][15] Several investigators have studied the effects of various parameters on the performance of heat pipes viz. the effects of wick, 16,17 fin, 18 inclination angle of heat pipe, 19 filling ratio and vacuum level inside the heat pipe, 20 variable conductance heat pipe, 17,21 length-toinner-diameter ratio on entrainment limit of heat pipe, 22 use of nano-fluids, [23][24][25][26] pulse heating on oscillating-flow heat pipe, 27 etc.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Parametric studies on interacting parameters influencing heat pipe performance

Kumar

Jain

Shah

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

The performance of a heat pipe is governed by many parameters, the effects of which may influence each other. Hence, it is utmost important to optimize the combination of these parameters for an effective energy transfer in a heat pipe. In the present study, the interacting effects of four different parameters affecting the effectiveness of heat pipe are studied namely the fluid filling ratio (20%, 30%, 40%), the pressure inside the heat pipe (0.2 bar, 1 bar, 1.8 bar), the number of wick layers (0, 1, 2) and the inclination angle of heat pipe (0°, 45°, 90°). The response surface method based on central composite design approach is applied to optimize the number of experiments. The effects of interacting parameters on the effectiveness of heat pipe are discussed. Among the various parameters, the pressure inside the heat pipe was found to be the most important parameter followed by the fluid filling ratio, the inclination of heat pipe and the number of wick layers. From the analysis, the optimum combination of parameters was obtained as 40% filling ratio, 0.2 bar pressure, 2 wick layers and 0° inclination. At this point, the effectiveness predicted with the model and obtained through experiments was found to be 0.630 and 0.649 respectively. Based on the experimental results, a quadratic empirical model is developed which predicts the effectiveness of heat pipe within [Formula: see text]% of the experimental results for different operating conditions of heat pipe.

show abstract

Section: Response Surface Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Parametric studies on interacting parameters influencing heat pipe performance

Kumar

Jain

Shah

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

show abstract

“…Testlerden elde edilen bulgular, deiyonize su yerine çalışma sıvısı içeren nanoparçacıklar kullanıldığında, ısı borusu demetini içeren bir reküperatörün termal performansının önemli ölçüde arttığı sonucuna ulaşmışlardır. 6 kW ısıtıcı gücünde yapılan testlerde maksimum gelişme % 37.04 olarak gerçekleştiğini bulmuşlardır [7]…”

Section: Gi̇ri̇ş (Introduction)unclassified

Improvement of Performance by Using MgO+CuO/Water and MgOAl2O3/Water Nanofluids in Sequential Heat Pipe Heat Exchangers: A Comparative Experimental Study

Filiz¹,

Yetişken²,

Sözen³

2021

Politeknik Dergisi

View full text Add to dashboard Cite

show abstract

“…In the literature different methods were used to enhance the thermal performance of energy systems like combi boilers. Some researcher used nanofluid to improve thermal efficiency of energy systems like combi boilers and heat pipes [5][6][7][8]. Also, some researchers used turbulator in the heat exchanger with the aim of increasing thermal efficiency [9].…”

Section: Introductionmentioning

confidence: 99%