Desigen

 

General Heat Exchanger Design Criteria
Plate heat exchanger technology offers the potential for higher heat transfer rates, smaller footprint, lighter weight, reduced maintenance and lower cost. Your process parameters will determine which PHE type will best suit your application requirements. Below is a table of general specifications for standard range units. Note that higher performance materials and extended range units can expand the application range of each type. Consult a OMEXELLell applications engineer or submit an Application Data Form for the best PHE technology for your application.
Standard Range General Specifications

 

Plate & Frame

Welded 

Shell & Plate

Welded

Prime Surface

 

SUPERCHANGER

ULTRAMAX

SUPERMAX

MAXCHANGER

PLATECOIL

PERFORMANCE

 

 

 

 

 

Pressure Rating, barg (psig )

28 (400)

45 (650)

70 (1,015)

82.7 (1,200)

21 (300)

Max. Temperature Rating, °C (°F)

176 (350)

343 (650)

538 (1,000)

538 (1,000)

260 (500)

CONNECTIONS

 

 

 

 

 

Max. Connections, DIN (ANSI in.)

500 (20)

300 (12)

400 (16)

50 (2)

51 MPT (2 MPT)

MATERIALS

 

 

 

 

 

Standard Plate Materiala

304 SS, 316 SS and Titanium

316L SS

316L SS

316L SS, Titanium


304 SS, 316 SS and Carbon Steel

Standard Frame/Shell Material

Carbon Steel

Carbon Steel

Carbon Steel, 316L SS

316L SS, Titanium

N/A

 

Plate & Frame Heat Exchangers transfer heat more efficiently than shell & tube units in most applications, due in large measure to the turbulent flow created by the corrugated patterns of their plates. They use only 10% to 50% of space required by shell & tube units and are much lighter in weight. And, they cost less.
Head-to-Head Comparison

Plate & frame

Shell & tube

“U” values several times greater than shell and tube 

Low efficiency

Can be designed for less than a 1°C(2°F) temperature approach 

Typically designed for greater than a 3°C to 5°C(5°F to 10°F) temperature approach

Easy disassembly within its own footprint

Requires twice its length to pull tube bundle; complex disassembly—tube bundle must be pulled

Low fouling due to corrugations and inherent turbulence

3 to 10 times greater fouling due to circular cross-section and laminar flow

Practically no heat loss—no insulation required

Great amount of heat loss—insulation required