xphe trianing

8/17/2019 Xphe trianing

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®

Xphe Xphe WorkshopWorkshop



© Heat Transfer Research, Inc. All rights reserved. Confidential: For HTRI member use only.

or!sho" #oalor!sho" #oal

$resenting ca"abilities

or!ing a series of e%am"les

&earn ho' to use X phe effectively by




(chedule(chedule

)orning

$late*and*frame geometry

$rocess s"ecifications

Afternoon

Fluid "ro"erty s"ecifications

+esign and analysis methods




$rogram +escri"tion$rogram +escri"tion

X phe is a calculation engineinterface

combination that calculates heattransfer and "ressure dro" "erformance

for "late*and*frame e%changers.




-vervie'-vervie'

)odule /Plate-and-Frame Geometry 0

$rogram ca"abilities

#ra"hical user interface

)odule 1 /Process Specifications)

Rating and simulations

$erformance "arameters




-vervie'-vervie'

)odule 2 /Fluid Property Specifications0

#rid "ro"erties

Com"onent by com"onent

)odule 3 /Design and analysis methods0

4ser*s"ecified f* and 5* curves

Condensation

6oiling


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)odule )odule Plate-and-Frame Geometry Plate-and-Frame Geometry

#eometry su""orted

$late ty"es, "asses, "ort arrangement

#eometry in"ut $late ty"e

$late grou"

$late configuration

$ort configuration

+esign mode



X X phe phe #eometry#eometry

$late*and*frame construction

Rectangular "late 'ith four "orts

-ne or t'o "late ty"es yielding u" to threeeffective chevron angles

-ne 7 si% hotcold "asses



X X phe phe #eometry#eometry

Cocurrent or countercurrent flo'

'ithin a "ass

4* or 8*flo' for one "ass 4ser*defined or data ban! "late

geometry



IncrementationIncrementation

X phe

Analy9es e%changer by dividing it into multi"lesmall "ieces

(olves heat transfer and "ressure dro" in eachincrement using local "hysical "ro"erties

-verall results integrate incrementalresults

Increments

Allo' more accurate calculations

Consider effects such as maldistribution



IncrementationIncrementation

End Plates

1 2 3 4 5 6

1

10



Reuired In"utReuired In"ut

Red outlines on

in"ut fields indicate

reuired in"ut

Red outlines around icons

indicate reuired in"ut

Red arro's indicate

subordinate "anelcontaining reuired in"ut



$late #eometry$late #eometry

Internal "late databan!

4ser*defined "late ty"es

In"ut ma%imums

)a%imum of 1 "late grou"s

; hotcold "asses each 'ith only one channel ty"e

2 hotcold "asses each 'ith t'o channel ty"es

1 hotcold "ass each 'ith three channel ty"es




Chevron

angleVerticaldistance

between

ports

Horiontal distance

between ports

E!!ective heattrans!er area




Chevron angle and area "er "late reuired

<.; mm thic!ness, by default



$ort #eometry +ata$ort #eometry +ata

$ort diameter and verticalhori9ontaldistance bet'een "orts reuired

Channel 'idth and

effective length

based on "ort data



$late Configuration$late Configuration

Flo' diagram matches

s"ecified number of

"asses and flo' configuration




Per pass =umber of channels "er fluid "er "ass

/For uneven "asses this number is forsmaller number of "asses.0

Total Total number of channels "er fluid

User defined 4ser*s"ecified number of channels for

each "late section




=umber of differentchannel ty"es




)i%ture of "late ty"es

Total channels

for both fluids



)ulti"le $late Ty"es)ulti"le $late Ty"es

4se one or t'o "late ty"es to form channel

Five "late ty"es ma%imum for "late "ac!

>%am"le: 'ith t'o "late ty"es, 2 channel ty"esavailable

1

11

("ecify arrangement of "lates on $late

Configuration "anel




hy 4se )ulti"le $lates?hy 4se )ulti"le $lates?

)anufacturers "roduce finite set of "latety"eschevron angles

Heat transfer and "ressure dro" is functionof chevron angle

>ffective chevron angle for mi%ed "latety"es is average of t'o chevron angles

4ser can balance heat transfer and"ressure dro" reuirements by mi%ing "latety"es




)ulti"le $lates >%am"le)ulti"le $lates >%am"le

$late Ty"e

/e.g., 2< degree0

$late Ty"e 1

/e.g., ;< degree0

1 11

>ffectiveChevron

Angle

2< 3@ ;<




$ort Arrangement$ort Arrangement





4se dro"*do'n menu tos'itch frame"ressure "late

bet'een left and right

dra'ing. =o effect on

calculations.





To change "ort configuration,

right*clic! any "ort location




+esign+esign

("ecified e%changer duty and "rocess

conditions

(ome elements of e%changer geometryo"timi9ed to meet design constraints

Reuired duty

)a%imum "ressure dro"

$ort velocity

$late ty"e/s0 defined




+esign Algorithm+esign Algorithm

T'o design algorithmsstrategies

available

(elect desired o"tion on In"ut (ummary

"anel




Classic +esignClassic +esign

("ecify case as usual (elect Classic "esign

Run case

Algorithm automatically ad5usts s"ecificgeometry to achieve desired duty 'ithin

"ressure dro" constraints

=umber of channels /"lates0 =umber of fluid "asses

$ac! configuration /ho' many channels of

each ty"e0




#rid +esign#rid +esign

("ecify case as usual (elect #rid "esign

(elect geometry to consider on +esign

#eometry "anel

#eometry "arameters

Range of geometry

Run case

#rid of cases is run

over s"ecified range of values




+esign #eometry+esign #eometry

Clic! chec! bo% to enable

variation of item in design run

(elect different tabs to access all

design geometry items




+esign Constraints+esign Constraints

+esign o"tions /Classic or #rid0 'illnot select a design that violates

constraints s"ecified on this "anel.




+esign arnings+esign arnings

X phe flags /in +esign ie'0 anycase that violates constraints

s"ecified on this "anel, but may still

be selected for final design




+esign ie'+esign ie'

$rogram automatically selects best

design. Best is smallest area 'ithacce"table overdesign and no

constraint violations. 4ser may also

select any alternate design.

&ines in red indicate runs that

violate design constraint /C0 or

design 'arning /$0.




>%am"le >%am"le Oil Cooler Oil Cooler

-"en >%am"le.htri

T>)A A>4 oil

cooler B*in. tubes < ft long

T>)A fouling factors




>%am"le >%am"le Design Plate Frame Oil Cooler Design Plate Frame Oil Cooler

(elect File menu,

=e' $late and

Frame >%changer

(elect indo'

menu, Tile

Hori9ontally

+rag*and*dro" $rocess

Hot fluid "ro"erties

Cold fluid "ro"erties




>%am"le >%am"le Single-Phase DesignSingle-Phase Design

Create "late*and*frame design

Change fouling resistances

Hot side <.<<<<@ 6tuhr ft1 CF

Cold side <.<<<@ 6tuhr ft1 CF

$ositive overdesign reuired

< "si ma%imum "ressure hot and cold sides

Suggestions:

4se "late databan!

4se grid design to a""ro%imate design




(ession ie'(ession ie'

(elect case and right*clic!

to dis"lay conte%t menu

4se >dit menu, $rogram (ettingsto enabledisable log runs in

session vie'




)odule )odule Summary and ConclusionsSummary and Conclusions

X phe "erforms detailed incremental

calculations for most "late*and*frame

geometries

+esign mode hel"s develo" a""ro%imate

designs

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