Ex Erg y Catalog

7/30/2019 Ex Erg y Catalog

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2/24

Delivering unsurpassed quality,

design and value.

Exergy has been a leading global supplier of heat

transfer solutions for over twenty-five years. We

utilize state-of-the-art design and manufacturing

techniques to provide miniature heat exchangers for

a wide variety of industries that include biotechnology,

chemical, fuel cell, pharmaceutical, semiconductor,

and others. Customers applications range from a

single unit for research and development to

production quantities for OEM equipment.

Exergy offers a comprehensive product line of highlyefficient Shell & Tube and Tube-in-Tube heat

exchangers constructed of 316L SS, Hastelloy,

Inconel and other alloys. Our Sanitary models

are ideally suited for pharmaceutical and

biotechnology applications. Many standard

models are available from stock or we can create

a custom design. Exergys engineers will evaluate

your requirements and recommend the optimal

heat exchanger that meets your specifications,

schedule and budget.

Exergy. The ideal choice for compact design

and unequaled thermal performance.


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Shell & Tube Heat Exchangers

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

10 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

23 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

35 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

54 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

73 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Sanitary Shell & Tube Heat Exchangers

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

17 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

35 Series Single Tubesheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

35 Series Double Tubesheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1160 Series Single Tubesheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

60 Series Double Tubesheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Tube-in-Tube Heat Exchangers

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Pipe Thread Fittings (NPT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Sanitary Flanges (ISO 2852) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Custom Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Mounting Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Request for Evaluation & Quotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Heat Exchanger Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

TABLEO

FCONT

ENTS


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SHELL&TUBEOVERVIEW

Exergy miniature shell & tube heat exchangers

provide maximum performance in a minimum

package. A unique compact arrangement of small

diameter tubes results in a lightweight, cost

effective design that is easily installed in space

constrained areas.

A comprehensive line of standard products is

available from stock. Customization ranges from

modification of an existing model to an entirely

new design that meets your specifications,

schedule and budget.

From a single unit for research and development

to production quantities for OEM equipment,

Exergy has the solution. Contact our engineers for

assistance in selecting the optimal heat exchanger.

Performance Features:

Large heat transfer area in a small volume

Heat transfer rates to 500,000 BTU/hr (146 kW)

Liquid flows to 60 GPM (227 LPM)

Pressures up to 1,500 psi (10.3 MPa)

Design Features:

316L SS, Hastelloy, Inconel and other alloys

Nickel brazed

Seamless tubing

NPT, tube stub, or custom fittings

Mounting kits available

Fully pressure tested

Maintenance free

Typical Applications:

Processing equipment

Condensing and evaporating

Regenerative heat transfer

Process fluid temperature control

Batch process cooling or heating

Cryogenic cooling

Sample cooling

SeriesShell Diameter

in (mm)Transfer Area

ft2 (m2)

Pressure Rating

Page #Tube Sidepsi (kPa)

Shell Sidepsi (kPa)

10 .50 (13).05 to .17

(.005 to .016)1,500 (10,300) 1,000 (6,900) 3

23 1.00 (25)0.40 to 1.19

(.04 to .11)1,500 (10,300) 1,000 (6,900) 4

35 1.50 (38)1.43 to 3.65

(.13 to .34)1,200 (8,300) 800 (5,500) 5

54 2.25 (57)03.27 to 10.08

(.30 to .94)750 (5,200) 500 (3,400) 6

73 3.00 (76)06.51 to 13.41

0(.60 to 1.25)700 (4,800) 400 (2,800) 7

2


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516 . 8 3 2 . 9 3 00 / www . e x e r g y l l c . c om

3

Model 00268

SHELL&TUBE10SE

RIESModel 00527

TubeCount

TubeLengthin (mm) Model #

Fitting Type

Ain (mm)

Bin (mm)

WeightEmptylb (kg)

TransferArea

in2 (cm2)

Shell Side Tube Side

NPTTubeStub NPT

TubeStub

7

4.00 (102)

00268-2 4.88 (124)

3.32 (84) .23 (.10) 7.84 (51)00573-1 5.88 (149)

00527-1 5.88 (149)

8.00 (203)

00268-1 8.88 (226)

7.32 (186) .33 (.15) 16.10 (104)00573-2 9.88 (251)

00527-2 9.88 (251)

12.00 (305)

00268-3 12.88 (327)

11.32 (288) .43 (.20) 24.37 (157)00573-3 13.88 (353)

00527-3 13.88 (353)

Maximum Operating Conditions

Pressure Tube Side 1,500 psi (10,300 kPa)Shell Side 1,000 psi (6,900 kPa)

Temperature 800F (425C)

Pressure forSteam Service 125 psi (860 kPa)

Fluid Temperature Difference(THot)Ave - (TCold)Ave < 125F (70C)

Model 00573

Typical Pressure Drop For Water


6/244

Model 00415

Model 00169

Model 00540

SH

ELL&TUBE23SERIES

TubeCount


Fitting Type

Ain (mm)

Bin (mm)

WeightEmpty

lb (kg)

TransferArea

ft2 (m2)


NPTTubeStub NPT

TubeStub

37

8.00 (203)

00540-1 9.75 (248)

6.81 (173) 1.03 (.47) .58 (.05)00415-1 11.34 (288)

00169-3 11.34 (288)

12.00 (305)

00540-2 13.75 (349)

10.81 (275) 1.25 (.56) .89 (.08)00415-2 15.34 (390)

00169-1 15.34 (390)

16.00 (406)

00540-3 17.75 (451)

14.81 (376) 1.45 (.66) 1.19 (.11)00415-3 19.34 (491)

00169-2 19.34 (491)

19

8.00 (203)

00540-4 9.75 (248)

6.81 (173) 1.00 (.45) .40 (.04)00415-4 11.34 (288)

00169-4 11.34 (288)

12.00 (305)

00540-5 13.75 (349)

10.81 (275) 1.19 (.54) .61 (.06)00415-5 15.34 (390)

00169-5 15.34 (390)

16.00 (406)

00540-6 17.75 (451)

14.81 (376) 1.39 (.63) .81 (.08)00415-6 19.34 (491)

00169-6 19.34 (491)


Pressure Tube Side 1,500 psi (10,300 kPa)Shel l Side 1,000 psi (6,900 kPa)




Typical Pressure Drop For Wate


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5

Model 00256

Model 00296

Model 00320

SHELL&T

UBE35SERIES

TubeCount


Fitting Type

Ain (mm)

Bin (mm)

WeightEmptylb (kg)

TransferAreaft2 (m2)


NPTTubeStub NPT

TubeStub

55

10.00 (254)

00256-2 12.25 (311)

8.13 (207) 3.1 (1.4) 1.43 (.13)00320-3 13.75 (349)

00296-7 13.75 (349)

15.00 (381)00256-3 17.25 (438)

13.13 (334) 3.8 (1.7) 2.18 (.20)00320-2 18.75 (476)

00296-5 18.75 (476)

20.00 (508)

00256-1 22.25 (565)

18.13 (461) 4.6 (2.1) 2.93 (.27)00320-1 23.75 (603)

00296-3 23.75 (603)

91

10.00 (254)

00256-4 12.25 (311)

8.13 (207) 3.1 (1.4) 1.78 (.17)00320-4 13.75 (349)

00296-8 13.75 (349)

15.00 (381)

00256-5 17.25 (438)

13.13 (334) 3.8 (1.7) 2.71 (.25)00320-5 18.75 (476)

00296-9 18.75 (476)

20.00 (508)

00256-6 22.25 (565)

18.13 (461) 4.6 (2.1) 3.65 (.34)00320-6 23.75 (603)

00296-4 23.75 (603)


Pressure Tube Side 1,200 psi (8,300 kPa)Shell Side 800 psi (5,500 kPa)






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Model 00389

Model 00486

Model 00577

SH

ELL&TUBE54SERIES

TubeCount

Tube Lengthin (mm) Model #

Fitting Type

Ain (mm)

Bin (mm)

WeightEmptylb (kg)

TransferAreaft2 (m2)


NPTTubeStub NPT

TubeStub

127

10.00 (254)

00486-1 13.00 (330)

7.38 (187) 7.8 (3.5) 3.27 (.30)00577-1 15.00 (381)

00389-5 15.00 (381)

15.00 (381)

00486-2 18.00 (457)

12.38 (314) 9.0 (4.1) 5.00 (.46)00577-2 20.00 (508)

00389-4 20.00 (508)

20.00 (508)

00486-3 23.00 (584)

17.38 (411) 10.3 (4.7) 6.73 (.63)00577-3 25.00 (635)

00389-3 25.00 (635)

253

10.00 (254)

00486-7 13.00 (330)

7.38 (187) 8.5 (3.9) 4.89 (.45)00577-4 15.00 (381)

00389-6 15.00 (381)

15.00 (381)

00486-8 18.00 (457)

12.38 (314) 9.8 (4.5) 7.49 (.70)00577-5 20.00 (508)

00389-7 20.00 (508)

20.00 (508)

00486-9 23.00 (584)

17.38 (411) 11.5 (5.2) 10.08 (.94)00577-6 25.00 (635)

00389-8 25.00 (635)


Pressure Tube Side 750 psi (5,200 kPa)Shell Side 500 psi (3,400 kPa)






9/24


Model 00677

Model 00604

Model 00792

SHELL&TUBE73SERIES

TubeCount


Fitting Type

Ain (mm)

Bin (mm)

WeightEmptylb (kg)

TransferArea

ft2 (m2)


NPTTubeStub NPT

TubeStub

253

10.00 (254)

00677-1 13.50 (343)

7.38 (187) 11.2 (5.1) 6.51 (.60)00792-1 16.00 (406)

00604-1 16.00 (406)

15.00 (381)

00677-2 18.50 (470)

12.38 (314) 13.6 (6.2) 9.96 (.93)00792-2 21.00 (533)

00604-2 21.00 (533)

20.00 (508)

00677-3 23.50 (597)

17.38 (411) 16.1 (7.3) 13.41 (1.25)00792-3 26.00 (660)

00604-3 26.00 (660)

7


Pressure Tube Side 700 psi (4,800 kPa)Shell Side 400 psi (2,800 kPa)






10/24

SANITARYSHELL&

TUBEOVERVIEW

Series

Tubesheets ShellDiameterin (mm)

Transfer Areaft2 (m2)

Pressure Rating

Page #Single DoubleTube Sidepsi (kPa)

Shell Sidepsi (kPa)

17 .75 (19).14 to .61

(.013 to .057)1,500 (10,300) 1,000 (6,900) 9

35 1.50 (38)1.43 to 3.65

(.13 to .34)1,200 (8,300) 800 (5,500) 10

35 1.50 (38)1.34 to 3.30

(.12 to .31)1,200 (8,300) 800 (5,500) 11

60 2.50 (64)4.19 to 8.64

(.39 to .80)600 (4,100) 400 (2,800) 12

60 2.50 (64)3.91 to 8.35

(.36 to .78)600 (4,100) 400 (2,800) 13

Exergy sanitary shell & tube heat exchangers are

designed to meet the high quality requirements

and hygienic standards of the pharmaceuticalindustry. All product contact surfaces are

electropolished to 20 in (0.5 m) Ra. Double

tubesheet models eliminate risk of cross-

contamination between the product and

working fluids.

A comprehensive line of standard products

is available from stock. Customization

ranges from modification of an existing

model to an entirely new design to meet

your specifications, schedule and budget.

From a single unit for research and development

to production quantities for OEM equipment,

Exergy has the solution. Contact our engineers

for assistance in selecting the optimal heat exchanger.


Large heat transfer area in a small volume

Heat transfer rates to 500,000 BTU/hr (146 kW)

Liquid flows to 60 GPM (227 LPM)

Pressures up to 1,500 psi (10.3 MPa)

Design Features:

Fully drainable on tube side

Integrated sanitary flanges (ISO 2852)

ANSI / cGmp / FDA compliant

Clean-in-place (CIP)

Mounting kits available in stainless steel

Maintenance free

Construction Features:

316L SS, Hastelloy, Inconel and other alloy

Nickel brazed (no welds)

Seamless electropolished tubing

Available without electropolish

Material & process certifications provided

Double tubesheet models

Typical Applications: Point of use cooling or heating

Water for Injection (WFI)

Clean steam condensing and sub-cooling

Temperature control of high purity product

Product sampling

Processing equipment

Skid mount systems

8


11/24


Model 00402

Model 00882

SANITARY17SERIES

TubeCount


Shell SideFittings

Ain (mm)

Bin (mm)

WeightEmptylb (kg)

TransferArea

in2 (cm2)NPT Flange

19

4.00 (102)

00402-1

4.07 (103) 2.47 (63) .46 (0.21) 20.7 (134)00402-5 00882-1 00882-5

8.00 (203)

00402-2

8.07 (205) 6.47 (164) .63 (0.29) 43.2 (279)00402-6 00882-2 00882-6

12.00 (305)

00402-3

12.07 (307) 10.47 (266) .81 (0.37) 65.6 (423)00402-7 00882-3 00882-7

16.00 (406)

00402-4

16.07 (408) 14.47 (368) .98 (0.44) 88.1 (568)00402-8 00882-4 00882-8

Electropolished


Pressure* Tube Side 1,500 psi (10,300 kPa)Shell Side 1,000 psi (6,900 kPa)




* Pressure rating may be limited by sanitary flange clamp. Refer to clampmanufacturers literature.


9


12/24

Model 00455

Model 00456

SAN

ITARY35

SERIESSING

LETUBESHEET

Tube

Count

Tube Length

in (mm) Model #

Shell SideFittings

A

in (mm)

B

in (mm)

WeightEmpty

lb (kg)

TransferArea

ft2 (m2)NPT Flange

55

10.00 (254)

00455-1

10.04 (255) 7.74 (197) 2.5 (1.1) 1.43 (.13)00455-7

00456-1

00456-4

15.00 (381)

00455-2

15.04 (382) 12.74 (324) 3.2 (1.4) 2.18 (.20)00455-8

00456-2

00456-5

20.00 (508)

00455-3

20.04 (510) 17.74 (452) 3.9 (1.8) 2.93 (.27)00455-9

00456-3

00456-6

Electropolished


Pressure* Tube Side 1,200 psi (8,300 kPa)Shell Side 800 psi (5,500 kPa)





Typical Pressure Drop For Wate

10


13/24


14/24

Model 00686

Model 00687

12

SAN

ITARY60

SERIESSING

LETUBESHEET

Tube

Count

Tube Length

in (mm) Model #

Shell SideFittings

A

in (mm)

B

in (mm)

WeightEmpty

lb (kg)

TransferArea

ft2 (m2)NPT Flange

163

10.00 (254)

00686-1

10.04 (255) 7.12 (181) 7.6 (3.5) 4.19 (.39)00686-4

00687-1

00687-4

15.00 (381)

00686-2

15.04 (382) 12.12 (308) 9.3 (4.2) 6.41 (.60)00686-5

00687-2

00687-5

20.00 (508)

00686-3

20.04 (510) 17.12 (435) 11.1 (5.0) 8.64 (.80)00686-6

00687-3

00687-6

Electropolished


Pressure* Tube Side 600 psi (4,100 kPa)

Shell Side 400 psi (2,800 kPa)







15/2413

Model 01179

Model 01182

SANITARY

60SERIESD

OUBLETUBESHEET

Tube

Count

Tube Length

in (mm) Model #

Shell SideFittings

A

in (mm)

B

in (mm)

WeightEmpty

lb (kg)

TransferArea

ft2 (m2)NPT Flange

163

10.00 (254)

01182-1

10.00 (254) 6.68 (170) 9.4 (4.3) 3.91 (.36)01182-4

01179-1

01179-4

15.00 (381)

01182-2

15.00 (381) 11.68 (297) 11.6 (5.3) 6.13 (.57)01182-5

01179-2

01179-5

20.00 (508)

01182-3

20.00 (508) 16.68 (424) 13.8 (6.3) 8.35 (.78)01182-6

01179-3

01179-6

Electropolished



Pressure* Tube Side 600 psi (4,100 kPa)

Shell Side 400 psi (2,800 kPa)







16/24

TUBE

-IN-TUBEOVERVIEW

Exergy tube-in-tube heat exchangers consist oftwo tubes, an inner and an outer coiled together.This unique, compact design prevents thermalfatigue, increases efficiency and reduces the overallsize. It is ideal for high temperature, high pressureand low flow applications.

The sanitary models are designed to meet the highquality requirements and hygienic standards of thepharmaceutical industry. All product contact surfacesare electropolished to 20 in (0.5 m) Ra and there isno risk of cross-contamination between the productand working fluid.

A comprehensive line of standard products isavailable from stock. Customization ranges from

modification of an existing model to an entirelynew design to meet your specifications, scheduleand budget.

From a single unit for research and developmentto production quantities for OEM equipment,Exergy has the solution. Contact our engineers forassistance in selecting the optimal heat exchanger.


Heat transfer rates to 100,000 BTU/hr (29 kW) Liquid flows to 10 GPM (38 LPM)

Pressures up to 4,500 psi (31 MPa)

Design Features:

316L SS, Hastelloy, Inconel and other alloys NPT, tube stubs, or custom fittings Thick walled seamless tube Integrated threaded holes for mounting Highly resistant to thermal stress All welded construction Fully pressure tested Maintenance free

Sanitary Features:

Electropolished surfaces to 20 in (0.5 m) No risk of cross-contamination between flui Sanitary fittings (ISO 2852) Material & process certifications included Fully drainable on product side Clean-in-place (CIP)

No dead spots or crevices

Typical Applications:

High temperature, high pressure, low flow Multi-phase fluids & slurries High thermal stress Steam condensing Seal cooling Liquid/Gas Sampling WFI

14


17/2415

Model 00413

Model 00448


TUBE-IN-TUBEPIPETHREAD

(NPT)

Model 00528

Model #Outer Tubein (mm)

Inner Tubein (mm)

Transfer Areaft2 (m2)

Weight Emptylb (kg)

00413.50 OD x .035 Wall

(12.7 OD x .9 Wall)

.25 OD x .035 Wall

(6.4 OD x .9 Wall)1.2 (.11) 5.9 (2.7)

00448.75 OD x .049 Wall

(19.1 OD x 1.2 Wall)

.38 OD x .049 Wall

(9.5 OD x 1.2 Wall)1.7 (.16) 11.8 (5.4)

005281.00 OD x .065 Wall

(25.4 OD x 1.7 Wall)

.50 OD x .065 Wall

(12.7 OD x 1.7 Wall)2.5 (.24) 22.9 (10.4)


18/24


19/24


17

CUSTOM

PRODU

CTS

Exergy specializes in providing the highestheat exchanger performance in the mostcompact, cost effective package. If ourstandard products do not meet yourrequirements, we will apply our extensiveexperience and proprietary methods to createa custom design.

Our capabilities range from minor modificationsto completely new designs, regardless ofquantity. Contact us to have your requirementsevaluated by an Applications Engineer.

Materials of Construction:

Stainless Steel Hastelloy

Inconel

Other alloys

Special Processing:

Passivation Electropolish Corrosion resistant coating Specialty cleaning processes

Design Modifications: Increased heat transfer or fluid flow rates Expanded pressure or temperature limits Assembly or integration of other components Integrated custom fittings or thread types Special tube size or count Special baffle configurations Special shell diameter and length Additional inlet or outlet ports Rotated shell fittings


20/2418

MOUNTINGKIT

S Exergy mounting kits allow for rigid attachment to your support structure. The mounting kitcontains two stainless steel mounting clamps and the stainless steel hardware required fortapped or through-hole installation. Mounting hole patterns and installation instructions are providedwith each kit and are available online at www.exergyllc.com

HeatExchanger

Series Mounting Kit

Max PanelThickness

in (mm)

Min ThreadDepth

in (mm)A

in (mm)B

in (mm)C

in (mm)D

in (mm)

10 01034 .25 (6.4) .21 (5.3) 1.25 (31.8) .85 (21.6) .38 (9.5) .38 (9.5)

17 Sanitary 01021-03 .25 (6.4) .31 (7.9) 2.60 (66.0) 1.70 (43.2) .50 (12.7) .50 (12.7)

23 00420-01 .25 (6.4) .31 (7.9) 1.70 (43.2) 1.20 (30.5) .50 (12.7) .50 (12.7)

35 00421-01 .31 (7.9) .38 (9.5) 2.44 (62.0) 1.80 (45.7) .75 (19.1) .75 (19.1)

35 Sanitary 00421-03 .31 (7.9) .38 (9.5) 3.56 (90.4) 2.55 (64.8) .75 (19.1) .75 (19.1)

54 00579-01 .38 (9.5) .50 (12.7) 3.50 (88.9) 2.65 (67.3) 1.00 (25.4) 1.00 (25.4)

60 Sanitary 01022-03 .38 (9.5) .50 (12.7) 5.00 (127) 4.20 (107) 1.25 (31.8) 1.00 (25.4)

73 00925-01 .38 (9.5) .50 (12.7) 4.24 (108) 3.40 (86.4) 1.00 (25.4) 1.50 (38.1)

HeatExchanger

Series Mounting KitE

in (mm)F

in (mm)G

in (mm)H

in (mm) Screw J

10 01034 .85 (21.6) .43 (10.9) .50 (12.7) .86 (21.8) #8-32UNF

17 Sanitary 01021-03 2.00 (50.8) 1.10 (27.9) .75 (19.0) 1.09 (27.7) #10-32UNF

23 00420-01 1.25 (31.8) .60 (15.2) 1.00 (25.4) 1.20 (30.5) #10-32UNF

35 00421-01 1.88 (47.6) .90 (22.9) 1.50 (38.1) 1.80 (45.7) 1/4-28UNF

35 Sanitary 00421-03 3.00 (76.2) 1.65 (41.9) 1.50 (38.1) 1.80 (45.7) 1/4-28UNF

54 00579-01 2.75 (69.9) 1.33 (33.8) 2.25 (57.2) 2.50 (63.5) 5/16-24UNF

60 Sanitary 01022-03 4.25 (108) 2.60 (66.0) 2.50 (63.5) 2.19 (55.6) 5/16-24UNF

73 00925-01 3.50 (88.9) 1.70 (43.2) 3.00 (76.2) 2.19 (55.6) 5/16-24UNF


21/2419

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Industry: OEM application How did you learn about Exergy?

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Application information:

Fill out the information below to have an Exergy engineer evaluate your application and recommend

the optimal heat exchanger. Our Heat Exchanger Calculator is available at www.exergyllc.com.

Heat transfer required (if known) BTU/hr Watts Other

Material preference (if known) Batch size (if applicable)

Fluid type

Flow rate

Temperature in

Temperature out

Pressure in

Allowable pressure drop

Density

Viscosity

Thermal conductivity

Specific heat

Fitting types (If known)

Hot Fluid Cold Fluid

Value Units Value Units

REQUEST

FOREVALUA

TION

&QU

OTATION

Please complete this form and fax back to (516) 832-9304 (also available at www.exergyllc.com).

320 Endo Boulevard, Garden City, NY 11530 / Tel (516) 832-9300 / Fax (516) 832-9304


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When selecting a heat exchanger, certain principles arefrequently used. The descriptions below are given toexplain some of these principles. Exergys engineers will

perform these and other calculations to recommend theoptimal heat exchanger to meet your needs.

Heat Exchanger:

A heat exchanger is a device used to transfer thermalenergy from a warmer fluid into a cooler fluid, withoutallowing the two fluids to mix or come in contact witheach other.

Exergy offers the following two types of heat exchangers:

The shell & tube heat exchanger consists of a numberof small diameter tubes (the bundle) enclosed insidea larger tube (the shell). One fluid flows through the

small tubes, the other flows around the outside of them.Connections are provided at each end to connect thefluid inlets and outlets.

The tubeintube heat exchanger consists of two tubes,an inner and an outer coiled together. As with the shell &tube, one fluid flows through the inner tube, the otherflows around the outside of it.

Heat Transfer Rate:

The heat transfer rate (Q) of any heat exchanger isa measure of how quickly thermal energy is beingtransferred from the warmer fluid to the cooler fluid.It is expressed in units of BTU/hr or Watts.

Transfer Area:

The transfer area (A) is the total area of the wallseparating the two fluids, through which the thermalenergy is transferred. For Exergy heat exchangers, itis the outside surface area of the tubes inside the shell.

Overall Heat TransferCoefficient:

The overall heat transfer coefficient (U) is a measureof the heat exchangers ability to transfer heat betweenfluids. It is determined by the physical propertiesproperties of the fluids used, and the geometry of

the heat exchanger. Due to their small size, the heattransfer coefficient for Exergy heat exchangers is usuallygreater than the values published for shell and tube heatexchangers. This means that often the desired amount ofheat transfer can be accomplished with a smaller transferarea. This coefficient is used to calculate the heat transferrate as follows:

Q = U A T

Pressure Drop:

An efficient heat exchanger allows both fluids to come inclose proximity to each other, without mixing. This is often

accomplished with numerous small fluid passages,or a long tortuous fluid path. While beneficial forheat transfer, these configurations often create

significant resistance to flow. The pressure dropis a measure of this resistance, and is calculatedas follows:

P = Pin Pout

The pressure drop is used either to determine thefluid flow rate through the heat exchanger, or thesize of the pump used to pump the fluid.

Effectiveness:

For two given fluid streams, there is a maximumamount of heat that can be transferred. Forexample, it is impossible for the hot fluid to be

cooled to a temperature colder than the inlettemperature of the cold fluid. This is shown inthe diagram below.

The effectiveness ( ) of a heat exchanger is theratio of the actual heat transferred to this maximumpossible amount, and is calculated as follows:

HEAT

EXCHANGERPR

INCIPLE

S

3 Q (mCp)hot (TinTout)hot

Qmax possible (mCp)hot (Tin hot Tin cold)= =

Nomenclature:

A = Heat transfer area, ft2 [m2]Cp = Specific heat or heat capacity, BTU/(lbF)

[kJ/(kgC)]m = Mass flow rate, lb/hr [kg/sec]

P = Pressure loss, psi [kPa]

Q = Heat transfer rate, BTU/hr [W]Tin, Tout = Inlet and outlet temperatures

respectively, F [C]T = Characteristic temperature difference, F [C]

U = Overall heat transfer coefficient,BTU/(hrft2F) [W/(m2C)]

= Effectiveness, dimensionless3

3

20


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Product specifications contained herein are subject to change without notice. Manufacturer assumes no liability for misuse or abuse of product. Specificwarranty information is available upon request. All information contained herein is copyrighted under United States law. All rights reserved. 2006 Exergy, LLC


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Exergy, LLC

320 Endo Boulevard

Garden City, NY 11530

Tel (516) 832-9300

Fax (516) 832-9304

www.exergyllc.com

Ex Erg y Catalog

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