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Journal for Studies in Management and Planning

Available at

http://edupediapublications.org/journals/index.php/JSMaP/

e-ISSN: 2395-0463

Volume 02 Issue 11

November 2016

Available online: http://edupediapublications.org/journals/index.php/JSMaP/ P a g e | 333

Cfd Analysis of a Parallel Flow Heat Exchanger

1Ch. Rama Krishna,2Mr. B. Venkata Narayana

1

pg Scholar, Depeartment of Mechanical Engineering, Gandhi Academy of Technical

Education-Kodad

2 Assistant Professor, Depeartment of Mechanical Engineering, Gandhi Academy of

Technical Education-Kodad

ABSTRACT:

The heat exchanger is a device built for

efficient heat transfer from one fluid to

another, since fluids are separated by a

solid wall so that it is never mixed, or liquid

are in direct contact. Every year in research

in the field of heat exchanger technology is

growing for the development of efficient,

compact and economical heat exchangers,

all over the world. Update this community

for this development has to interact. In the

last five years intensive tube heat

exchangers use thermal forced to lower the

temperature of the liquid to work while

increasing the degree of medium

temperature cooling. The purpose of this

paper is to use the software ANSYS

FLUENT12.1 and manual calculations for

the analysis of the temperature falls as a

function of both the input of the speed and

the degree of input temperature and how

each differs with the other. Each heat

exchanger model in the steps, analyzing

built all the way up and put all the inputs

and outputs of antiparallel heat exchanger

models. The results were compared between

each model and the parallel flow and

confrontation with the pipe obstruction.

Turbulent flow analysis also by developing

heat exchangers to determine their effect on

heat transfer. While it was expected to have

the performance of the heat exchanger is

less obstruction, and therefore less cool the

working fluid, and the heat exchanger

performance unexpectedly from the parallel

heat exchanger.

INTRODUCTION: To Heat Exchangers :

A heat exchanger is a device that is used to

transfer thermal energy (enthalpy) between

two alternately more fluids, between a

strong or solid surface and a fluid at

distinctive temperatures and in thermal

contact. In hotness or heat exchangers, there

are normally no external heat and work

collaborations. Commonplace applications

include warming(heating) or cooling of a

Page 2 of 5

Journal for Studies in Management and Planning

Available at

http://edupediapublications.org/journals/index.php/JSMaP/

e-ISSN: 2395-0463

Volume 02 Issue 11

November 2016

Available online: http://edupediapublications.org/journals/index.php/JSMaP/ P a g e | 334

fluid stream of concern and dissipation or

buildup of single-or multi segment fluid

streams. In different applications, the

destination may be to recover or reject heat,

or sterilize, distill, fractionate, concentrate,

pasteurize, crystallize, or control a process

fluid. In a couple of heat exchangers, the

fluids trading or exchanging hotness or

temperator are in immediate contact. In

mostly heat exchangers, high temperature

exchange or heat tranfer between fluids

happens through a dividing divider(wall) or

into and out of a divider(wall) in a transient

way. In numerous heat exchangers, the

fluids are differentiated by a heat transfer

surface, and in a perfect world they don't

blend or break. Such exchangers are named

as direct exchanger, or essentially

recuperate. In contrast, exchangers in which

there is intermittent heat exchange between

the hot and cold fluids—via thermal energy

storage and release through the exchanger

surface or matrix— are referred to as

indirect transfer type, or fundamentally

regenerators. Such exchangers usually have

fluid leakage from one fluid stream to the

other, due to pressure divergences and

matrix rotation/valve switching. Common

examples of heat exchangers are automobile

radiators, condensers, shell-and-tube

exchangers, evaporators, cooling towers,

and air pre heaters. On the off chance that no

stage change happens in any of the fluids in

the exchanger, it is here and there alluded to

as a sensible heat exchanger. There could be

internal thermal energy sources in the

exchangers, such as in electric heaters and

nuclear fuel elements. Combustion and

chemical reaction may take place within the

exchanger, such as in boilers, fired heaters,

and fluidized-bed exchangers. Mechanical

devices may be used in some exchangers

such as in scraped surface exchangers,

agitated vessels, and stirred tank reactors.

Heat transfer in the separating wall of a

recuperator generally takes place by

conduction.

Classification Of Heat Exchangers According To The Flow Direction:

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Journal for Studies in Management and Planning

Available at

http://edupediapublications.org/journals/index.php/JSMaP/

e-ISSN: 2395-0463

Volume 02 Issue 11

November 2016

Available online: http://edupediapublications.org/journals/index.php/JSMaP/ P a g e | 335

TYPES OF HEAT EXCHANGERS :

1.SHELL AND TUBE HEAT

EXCHANGER : Shell and tube heat

exchangers consist of a series of tubes. One

set of these tubes contains the fluid that must

be either heated or cooled. The second fluid

runs over the tubes that are being heated or

cooled so that it can either provide the heat

or absorb the heat required. A set of tubes is

called the tube bundle and can be made up

of several types of tubes: plain,

longitudinally finned, etc. Shell and tube

heat exchangers are typically used for high- pressure applications . This is because the

shell and tube heat exchangers are robust

due to their shape. Several thermal design

features must be considered when designing

the tubes in the shell and tube heat

exchangers: Tube diameter: Using a small

tube diameter makes the heat exchanger

both economical and compact. However, it

is more likely for the heat exchanger to foul

up faster and the small size makes

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