Topic
Heat transfer
About: Heat transfer is a research topic. Over the lifetime, 181795 publications have been published within this topic receiving 2923586 citations. The topic is also known as: heat exchange.
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TL;DR: In this paper, a comprehensive experimental dataset is obtained for thermal conductivity of nanofluids with variation in nanoparticle material, base liquid, particle size, particle volume fraction and suspension temperature.
Abstract: One of the reasons for the controversy on the thermal conductivity enhancement of nanofluids is the lack of extensive data over a wide range of parameters. In the present study, a comprehensive experimental dataset is obtained for thermal conductivity of nanofluids with variation in nanoparticle material, base liquid, particle size, particle volume fraction and suspension temperature. Transient hot wire (THW) equipment as well as Temperature Oscillation equipment are developed for the measurement of thermal conductivity of liquids. The measurements show that, in general, thermal conductivity values of all the nanofluids are higher than that of the equivalent macro-particle suspensions. Metallic nanofluids are found to give higher enhancements than that of oxide nanofluids. Particle size is found to have a tremendous impact on the thermal conductivity of nanofluids with enhancement in the thermal conductivity increasing almost inversely with reduction in the particle size. Increase in temperature significantly increases the thermal conductivity of a nanofluid. It is also observed that the thermal conductivity of nanoparticle suspensions is relatively higher at lower volume fractions, thereby giving a non-linear dependence on the particle volume fraction.
333 citations
15 Feb 2016
TL;DR: In this paper, the authors present a heat exchanger design handbook, which is used for the design of heat exchangers, and discuss the design aspects of the handbook and the design process.
Abstract: Heat exchanger design handbook , Heat exchanger design handbook , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
333 citations
TL;DR: In this paper, a comprehensive review is conducted on the simultaneous application of nanofluids and porous media for heat transfer enhancement purposes in thermal systems with different structures, flow regimes, and boundary conditions.
333 citations
TL;DR: In this article, a review of the literature describing the packing structure and effective thermal conductivity of randomly packed beds consisting of mono-sized particles is presented, with particular attention paid to the packing structures (porosity, coordination number, and contact angles) and heat transfer.
332 citations
01 Jan 1994
TL;DR: In this article, the ingress problem in rotor-stator systems is addressed, including basic equations, Laminar flow over a single disc, Turbulent flow over one disc, heat transfer from one disc to another, and a superposed flow.
Abstract: This book addresses rotor-stator systems. Topics covered include: Basic Equations; Laminar flow over a single disc; Turbulent flow over a single disc; Heat transfer from a single disc; Rotor-stator systems with no superposed flow; Rotor-stator systems with a superposed flow; Heat transfer in rotor-stator systems; and Sealing rotor-stator systems: The ingress Problem.
332 citations