Countercurrent exchange - Wikipedia
Countercurrent exchange is a mechanism occurring in nature and mimicked in industry and engineering, in which there is a crossover of some property, usually heat or some chemical, between two flowing bodies flowing in opposite directions to each other. The flowing bodies can be liquids, gases, or even solid powders, or any combination of those.
Parallel and Counter Flow Designs Heat Exchangers - Engineers Edge
A counter-flow heat exchanger is one in which the direction of the flow of one of the working fluids is opposite to the direction to the flow of the other fluid. In a parallel flow exchanger, both fluids in the heat exchanger flow in the same direction.
18 . 5 Heat Exchangers - MIT - Massachusetts Institute of Technology
Heat exchangers are typically classified according to flow arrangement and type of construction. The simplest heat exchanger is one for which the hot and cold fluids move in the same or opposite directions in a concentric tube (or double-pipe) construction.
Co-current flow and counter-current flow heat exchanger Heat exchangers are typically classified according to flow arrangement and type of construction. The simplest heat exchanger is one for which the hot and cold fluids move in the same or opposite directions. This heat exchanger consists of two concentric pipes of different
Water flowing at a rate of 13.85 kg/s is to be heated from 54.5 to 87.8oC in a double‐pipe heat exchanger by 54,430 kg/h of hot gas flowing counterflow and entering at 427oC ( 1.005 / ).
In the cocurrent mode, both the hot and cold streams enter the heat exchanger at one end, and leave at the opposite end. In the countercurrent mode, the streams enter at opposite ends of the heat exchanger. The two modes are illustrated below. H represent the mass flow rates of the cold and hot streams, respectively.
2019年1月29日 · Industrial heat exchangers have a combination of heat transfer through multiple barriers and a combination of counter-current & co-current flow •LMTD must be “corrected” to give the actual area-averaged temperature difference (i.e.,
Counterflow Heat Exchanger - an overview | ScienceDirect Topics
In a counterflow or countercurrent heat exchanger, hot and cold fluids enter the exchanger from opposite sides. The counterflow heat exchanger in Fig. 9.5 serves as a reference for all other heat exchanger configurations. A detailed analysis of this type of heat exchanger is therefore necessary. FIGURE 9.5. Counterflow heat exchanger.
1.6 Co-versus counter-current flow - SWEP
The flows inside a heat exchanger can be arranged in various ways to fulfil different purposes. The possibilities are counter-current flow, co-current flow and cross-flow, the first two of which are shown in Figure 1.8. There are different forms of so-called cross-flow heat exchangers in which the flows are more or less mutually perpendicular.
The aim of the measurement is to study the double tube heat exchanger and its properties and to calculate the Reynolds numbers and heat transfer coefficients, and to give and estimation for the thermal resistance caused by contamination of the surface.
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