...Yongfu Liu; Yi He; Peng Tan The application of liquid lithium as a coolant for the forthcoming era of space nuclear reactors exhibits significant potential, and spiral tube heat exchanger components are commonly used in steam generators for reactors. However, the heat transfer characteristics...

... exchanger (CMSP-STHE) with unilateral ladder-type helical baffle (ULHB). The presence of ULHB in the outer shell pass of the heat exchanger leads to a complex flow configuration and makes it quite challenging to deal with its computational analysis. The computational fluid dynamic method compares the CMSP...

...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...

...Jake Boxleitner; Tom Mulholland; Gregory Nellis This work describes the use of deposition-based additive manufacturing (AM) techniques to fabricate air-cooled, two-fluid heat exchangers. The project focused on a Heating, Ventilation and Air Conditioning application and used an industry-standard...

...Mohammad Reza Mohaghegh; Syeda Humaira Tasnim; Shohel Mahmud Utilizing phase change material (PCM) in concentric tube and shell-and-tube latent heat exchangers known as latent heat thermal energy storage (LHTES) have been extensively studied due to the high ability and density in storing energy...

...Taoufik Brahim Wickless heat pipe heat exchangers (HPHE) consistently showed instabilities and omits many experimental tests. The performance of a heat pipe is governed by many parameters, and the effects of which may influence each other. The objective of this paper is to develop a new approach...

... of the university central facility plants. In the current numerical model, the Reynolds number in the shell side of the heat exchanger is varied between 2200 and 8800 at a volume fraction of 0.02. The result shows that for a fixed cooling capacity of 280 kW, the Cu–water nanofluid reduced the mass flowrate by 4.8...

... radiator heat exchanger Taguchi method ANOVA heat transfer pressure drop heat transfer enhancement thermal systems Recently, improving energy efficiency methods have gained importance due to the competitive conditions in the market. Like other sectors, the automotive sector has also been...

...Marina Borsuk Fogaça; Daniele Toniolo Dias; Sergio Leonardo Gómez; Jhon Jairo Ramirez Behainne; Rozane de Fátima Turchiello This work assesses the thermal performance of gold nanofluid as a cooling liquid in a shell and helically coiled tube (SHCT) heat exchanger (HE) built at the bench scale...

...Dhruv Raj Karana; Rashmi Rekha Sahoo Thermoelectric-based waste heat recovery is a competent technique to reduce the exhaust emissions and fuel consumption of automobiles. Thermal and hydraulic characteristics of the exhaust heat exchanger plays a decisive role in the extent of waste heat recovery...

...Yahui Yang; Vinod Narayanan; Theresa Pistochini; Derrick Ross A simplified model to predict the performance of a novel sub-wet bulb evaporative chiller (SWEC) for producing chilled water is presented. The SWEC design uses a daisy-chained arrangement of cross-flow heat exchangers (HXs...

...) is achieved at a maximum value of 2.42 with double strip than single strip helical screw inserts at twist ratio of 2.5 and low value of Reynolds number. The present analysis shows suitability of the double strip helical screw insert to enable miniaturization of the heat exchangers. A compact heat exchanger...

... and helicoid tube shape on the performance of a double tube heat exchanger. The effects of concentration of nanoparticles, Reynolds number, coil curvature ratio, and flow arrangement through the annulus of double-helical coiled tube were the main points of interest. Three coiled tube heat exchangers were...

...M. Sridharan The heat exchanger is a device in which heat transfer takes place between two fluids at different temperatures. Among various classifications of heat exchangers, parallel and counter flow types are used widely in many industrial applications. This paper presents two fuzzy logic expert...

...Mahmoud Abdelmagied In this study, the thermofluid characteristics of double spirally coiled tube heat exchanger (DSCTHE) were investigated numerically. A three-dimensional (3D) computational fluid dynamic (CFD) model was developed using ansys 14.5 software package. To investigate the heat transfer...

... as heat source, and tube in tube heat exchanger as heat sink. For the experimentation, three different nanofluids are used as working fluids. The nanometer-sized particles of silicon dioxide (SiO 2 ), copper oxide (CuO), and alumina (Al 2 O 3 ) are dispersed in distilled water to produce the nanofluids...

...Y. F. Yap; H. Y. Li; J. Lou; H. Y. Miao This article presents a numerical study of particle deposition in two fluids, i.e., liquid and droplet flow in a single row tube bundle heat exchanger. The tubes in the heat exchanger are modeled as heating sources. Two level-set functions are used to capture...

...Piyush Sabharwall; Denis E. Clark; Ronald E. Mizia; Michael V. Glazoff; Michael G. McKellar References [1] Hesselgreaves , J. E. , 2001 , Compact Heat Exchangers: Selection, Design and Operation , Pergamon Press , Oxford, UK . [2] Mizia , R. E. , 2010 , “ Scoping...

... in a corrugated plate heat exchanger (PHE) were investigated in this study using computational fluid dynamics (CFD). Nanofluids have received attention recently as potential fluids to increase heat transfer in simple geometries, and work to investigate nanofluids in different systems is ongoing. In this study...

... is replaced by more efficient cold ends with expanders, it allows reduction of the number of Brayton stages in precooling section as well as the total heat exchanger size. Cold end with expander and Joule–Thomson valve combination has been found to be a good compromise between reliability, liquid production...