... in this study. The advantages of using the new dimensionless R number accompanied by a separate Prandtl number term in Eqs. (18) and (22) in the design of spiral coil heat exchangers, as reported by Patil [ 36 ], can be summarized as follows: (1) Elimination of the curvature ratio term in Eqs. (18...

..., in comparison to model-1 at lower Reynolds number (i.e., 3600). Computational fluid dynamics Forced convection Heat exchangers Heat transfer enhancement The triangular shape flow passage is popular in many applications (both domestic and industrial) such as solar air heaters [ 1 , 2 ], compact...

... through a nickel heat exchanger having staggered micro-pin-fins with pitch-to-diameter ratio of 2.5. They reported that the presence of the micro-pin-fins increased Nusselt number from 4.1 to 5.5 and friction factor from 15 to 20 for Reynolds number from 4000 to 20000. Koşar et al. [ 10 ] performed...

...Lovedeep Sahota; V. S. Gupta; G. N. Tiwari In the present paper, efforts has been made to study the thermophysical performance (properties) of N photovoltaic thermal flat plate collectors coupled with double slope solar still (N-PVT-FPC-DSSS) and operating with helically coiled heat exchanger...

... convection Heat and mass transfer Heat exchangers Micro heat transfer Nanoscale heat transfer Next, we describe the boundary conditions for these two new variable fields θ and γ . Please note only one periodic module ( 0 ≤ x ≤ L ) is considered in simulations; therefore, x  = 0...

...S. Eiamsa-Ard; P. Samravysin This paper deals with the influence of overlapped-quadruple twisted tape (OQT) and typical quadruple twisted tape (QT) on the enhancing heat transfer rate in a heat exchanger tube. The effects of tube orientation (co-tapes and counter tapes), tape arrangement (cross...

... Experimental techniques Heat and mass transfer Heat exchangers Micro heat transfer Thermal systems Two-phase flow Particles Droplets Boiling Condensation Nanoscale heat transfer Heat transfer Flow regimes, condensation, evaporation, and related two-phase flow phenomena in a single...

... importance in various engineering and geophysical problems, such as oceanography, geophysics, design of heat exchangers, hydrology, biology, and chemical processes (see, for instance, [ 1 – 3 ]). Also, in a particular subclass of such problems where heat transfer takes place in an enclosure partially filled...

...Foluso Ladeinde; Alabi Kehinde; Wenhai Li Manifold-microchannel (MM) combinations used on heat transfer surfaces have shown the potential for superior heat transfer performance to pressure drop ratio when compared with chevron-type corrugations for plate (frame) heat exchangers (PHEs). This paper...

...; published online May 25, 2018. Assoc. Editor: Amitabh Narain. 15 05 2017 12 04 2018 Evaporation Heat exchangers Heat transfer enhancement Boiling Condensation Shell and tube condenser might be the most common types of heat exchangers used in the refrigeration and air...

...Hyun Jin Kim; Leon Liebenberg; Anthony M. Jacobi Heat transfer and pressure drop characteristics of R-134a boiling in a chevron-patterned brazed plate heat exchanger (BPHE) are studied experimentally. With corrugated BPHE channels having hydraulic diameter of 3.4 mm and low refrigerant mass flux...

... received August 3, 2017; final manuscript received January 10, 2018; published online May 7, 2018. Assoc. Editor: Ali Khounsary. 03 08 2017 10 01 2018 Heat exchangers Radiative heat transfer Thermal systems When two bodies are closely separated, the near-field (NF) radiative...

... RANSFER . Manuscript received June 18, 2017; final manuscript received February 15, 2018; published online March 30, 2018. Assoc. Editor: Yuwen Zhang. 18 06 2017 15 02 2018 Experimental techniques Forced convection Gas turbine heat transfer Heat exchangers Heat pipes Heat...

...Heng Wang; Lakshmi Balasubramaniam; Samuel D. Marshall; Xin Jin; Rerngchai Arayanarakool; Poh Seng Lee; Peter C. Y. Chen The heat transfer performance of two roll-to-roll microchannel heat exchangers with square cross section and side length ranging from 0.2 mm to 0.5 mm were investigated via...

...D. Gomse; T. M. Kochenburger; S. Grohmann Heat exchangers are important components in many engineering applications. This paper proposes a numerical two-phase heat exchanger model with simultaneous heat transfer and pressure drop calculations. The presented model provides a modeling framework...

..., 2017; final manuscript received October 16, 2017; published online January 30, 2018. Assoc. Editor: Ali Khounsary. 30 05 2017 16 10 2017 Electronic cooling Heat exchangers Micro heat transfer Nanoscale heat transfer Flow networks are characterized by a plurality...

...: Zhuomin Zhang. 22 01 2017 29 08 2017 Heat and mass transfer Heat exchangers Heat transfer enhancement Heat transfer Micro heat transfer Thermal systems Thermophysical properties Manufacturing Nanoscale heat transfer During the last many years, water-based nanofluid...

... manuscript received September 9, 2017; published online January 17, 2018. Editor: Portonovo S. Ayyaswamy. 17 04 2017 09 09 2017 Conduction Extended surfaces Heat exchangers Porous media Thermophysical properties Porous structures have been proposed for many thermal management...

...Feng-Cai Zheng; Song Liu; Zhi-Min Lin; Jaafar Nugud; Liang-Chen Wang; Li-Min Chang; Liang-Bi Wang Air-side heat transfer and flow friction characteristics of four different fin patterns suitable for flat tube bank fin heat exchangers are investigated experimentally. The fin patterns are the fin...

... ,” ASME J. Heat Transfer , 137 ( 7 ), p. 071702 . 10.1115/1.4029821 [11] Webb , R. L. , 1981 , “ Performance Evaluation Criteria for Use of Enhanced Heat Transfer Surfaces in Heat Exchanger Design ,” Int. J. Heat Mass Transfer , 24 ( 4 ), pp. 715 – 726 . 10.1016/0017-9310(81)90015-6...