Finned surfaces
In the study of heat transfer, fins are surfaces that extend from an object to increase the rate of heat transfer to or from the environment by increasing convection. The amount of conduction, convection, or radiation of an object determines the amount of heat it transfers. Increasing the temperature gradient between … See more To create a tractable equation for the heat transfer of a fin, many assumptions need to be made: 1. Steady state 2. Constant material properties (independent of temperature) See more If the fin has a constant cross-section along its length, the area and perimeter are constant and the differential equation for temperature is … See more Open cavities are defined as the regions formed between adjacent fins and stand for the essential promoters of nucleate boiling or … See more The base of the fin is typically set to a constant reference temperature, $${\displaystyle \theta _{b}(x=0)=T_{b}-T_{\infty }}$$. There are four commonly possible fin tip ($${\displaystyle x=L}$$) conditions, however: the tip can be exposed to … See more Fins are most commonly used in heat exchanging devices such as radiators in cars, computer CPU heatsinks, and heat exchangers in power plants. They are also used in newer … See more WebSep 15, 2024 · In this paper, an experimental investigation of flow boiling in a horizontal narrow microchannel with hydraulic diameter of D h = 952 μm was conducted. Flow boiling heat transfer characteristics of micro-pin-finned surfaces were evaluated over the mass fluxes range from 200 - 500 kg/m 2 s (corresponding flow velocity: 0.2 - 0.5 m/s), using …
Finned surfaces
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WebOverall Surface Efficiency and Effectiveness • In contrast to the fin efficiency which characterizes the performance of a single fin, the overall surface efficiency characterizes an array of fins and the base surface to which they are attached • Arrays are shown in Fig 3.20, where S designates the fin pitch • In each case the overall ... WebThe finned surface was compared to a bare surface in order to observe any effects in the heat transfer. The experiments were performed for different mass flux: 244 kg/m2-s, 215 kg/m2-s, and 177 kg/m2-s. CHF conditions occurred at the lowest flow rate. Results showed the finned surface was able to enhance the heat transfer for 244 kg/m2-s case ...
Webone or more bundles of heat-transfer surface consisting of finned or bare tubes connected by headers; an air-moving device, such as an axial-flow fan, blower, or stack; unless it is … http://www.mechanicalwalkins.com/types-of-fins-in-heat-transfer/
WebFeb 1, 1997 · Systematic studies of continuous fin-and-tube tube heat exchangers under dehumidifying conditions are reported in the present study. The heat exchangers consist of nine fin-and-tube heat exchangers having plane fins. The effects of fin spacing, the number of tube row, and inlet conditions are investigated. Data are presented in terms of j factors … WebWe love surface design! We're a seasoned group of commercial flooring consultants who love helping designers bring their surface dreams to life.
WebKoch Heat Transfer offers a variety of enhancement devices, from tube inserts to baffles to finned surfaces, that can help improve the performance of existing exchangers with the …
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