... are conducted to analyze heat exchange between the supercritical-pressure aviation kerosene and the compressed high-temperature air in a double-pipe counterflow configuration, intended for the CCA applications. The thermal oxidation reactions and surface coking of kerosene are taken into consideration based...

... l d = cold exit total exergy PE = potential exergy convergent vortex tube divergent vortex tube intake pressure coefficient of performance (COP) exergy analysis standard k–ɛ model heat exchangers heat transfer enhancement References [1] Joseph , R.G...

..., Ns/m 2 ρ = density, kg/m 3 τ = shear stress, Pa cooling tower numerical analysis cross-flow cooling range heat and mass transfer heat exchangers heat transfer enhancement References [1] Alkhedhair , A. , Gurgenci , H. , Jahn , I. , Guan...

...Peng Lu; Jian Wei; Xiaodie Yan; Qinshan Yang This paper presents a numerical investigation on the flow and heat-transfer characteristics of liquid lithium and helium in printed circuit heat exchanger (PCHE) channels with pulsating flow introduced. The effects of the mass flowrate of helium...

... extended for a fin and tube heat exchanger, which acts as IDEC. Both DEC and IDEC are combined and developed into a two-stage evaporative cooler in which performance studies have been carried out. Performance parameters are optimized for all three modes of evaporative cooling. These studies reveal...

...Wang Xianjin; Niu Xiaofei; Bai Feng; Zhang Peng; Chen Shuping; Zhang Junhui A 2 K heat exchanger is essential for 2 K superfluid helium cryogenic systems, as it increases cooling capacity and improves overall system efficiency. The thermal performance of a 2 K heat exchanger is affected by many...

... experimental data are used to deduce numerically the performances of the proposed hybrid system using matlab software: the useful energy of the vacuum sensors, the efficiency of the hybrid solar system, the COP and the efficiency of a single-effect machine, and the heat balance of each heat exchanger...

...Subhakanta Moharana; Bibhu B. Sha; Mihir K. Das; Nikolay I. Pecherkin; Aleksandr N. Pavlenko; Oleg A. Volodin Tube bundles are an integral part of the two-phase heat exchangers and are employed in numerous commercial applications. Present research compares two kinds of horizontal staggered tube...

...Rishikesh Sharma; D. P. Mishra; S. K. Sarangi; Lakhbir Singh Brar The present work investigates numerically the performance of a fin- and tube-type heat exchanger using the finite volume method. The effect of different winglet geometries, namely, straight profile, concave profile, convex profile...

...Praveen Barmavatu; Mihir Kumar Das; R. Subash; Banoth Sravanthi; Radhamanohar Aepuru; R. Venkat Reddy; Yalagandala Akshay Kumar The main aim of the article is intended to design an effective Plate-Fin Heat Exchanger (PFHX) with composite materials such as SS316 + copper and SS304 + Flyash...

... surface. The fan rotation area was set as the dynamic domain, the multi-reference system model was used, the fan speed was set as N = 2000 rpm, and the other domains used the static domain. Both the cooling water radiator and the transmission oil radiator model adopted the two-fluid heat exchange...

... the wall under different corrugation pitches (X = 0.1 m): (a) f and (b) Nu Figure 11 shows the variations of Nu and f with corrugation pitch, with Nu · f (−1/3) used to evaluate the comprehensive performance of the heat exchange plate. As the pitch increases, the Nusselt number drops, as well...

...Vikash Kumar; Rashmi Rekha Sahoo Technology innovation requires advanced heat transporting techniques to fulfill better exergy and economic behavior of compact air heat exchangers (HXs). Three different turbulator inserts, TTIs, PTTIs, and DTTIs (twisted turbulator inserts, perforated twisted...

.... The heat pipe is a heat exchanger device with very high thermal conductivity. The present study was an attempt to find the effectiveness of the heat pipe attached to the battery under air cooling to reduce the temperature of the battery. The heat pipe can be flattened and bent hence it is very useful...

... of the impinging surfaces. Primary aeration of 20% is found to be optimum for higher net heat flux and lower CO emissions. Figure 7( a ) shows the area-weighted average heat fluxes on bottom, top, and side surfaces of the heat exchanger as a function of H . It is evident from the plot that the heat flux...

...Vaishali Goyal; Arun Kumar Asati; Amit Arora The current study reports the modeling and experimental study of a novel bank-type earth air heat exchanger for both hot and humid and hot and dry weather of Ferozepur. The air has been flown through the bank in the induced mode in which uniform flow...

...De-Xin Zhang; Chuan-Yong Zhu; Liang Gong; Bin Ding; Ming-Hai Xu This work presents a numerical investigation of the thermal control performance of a phase change material (PCM) composite-filling fin heat exchanger under natural convection and transient heat flux shocks. First, the temperature...

... falling film heat exchanger is fabricated. The falling film heat exchanger is used in heat pump evaporator, and its heat transfer characteristics are analyzed and tested. The outer diameter of the heat exchanger is 219 mm, outer diameter of the inner tube is 15.88 mm, and total outer surface area...

...Biao Li; Puyi Yang; Zexi Li; Jianxin Xu; Hua Wang Direct-contact heat exchangers have great potential for waste-heat utilization. This study established a multi-objective evaluation model of the volumetric heat-transfer coefficient, entransy dissipation, and uniformity of the temperature difference...

... in performance is predominantly due to the reduced airflow rate through the fan units along the periphery of the ACC, as can be seen in Fig. 4 . That is because the wind skirts obstruct the air from freely entering the heat exchangers along the outer edges of the ACC. The wind walls elevate the discharge...