mechanical vapor compression - howden documents/water/mvc_specsheet_april22... · vapor compression...

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Vapor compression relies upon a mechanical compressor or steam jet ejector to increase the temperature of the latent heat in steam to render it usable for process duties. Compression typically requires only 5% to 10% of the energy required to raise an equivalent amount of steam in a boiler. In mechanical vapor compression, turbo fans, positive displacement blowers or centrifugal compressors are used to raise the pressure and temperature of the generated vapors. Since mechanical compressors do not require any motive steam, all vapors can be compressed to elevated pressure and temperature eliminating the need for subsequent recovery system. The energy supplied to the compressor constitutes the additional energy input to vapors. After compression of vapor and subsequent condensation of the same, hot condensate leaves the system. The most complete product line Mechanical Vapor Compression www.howden.com Typical product performance range based on properties of steam with an inlet pressure of 14.7 psia (101.3 kPa-a) and inlet temperature of 212 ºF (100 ºC) This product map above is representative of the typical performance range under the stated inlet conditions, and should be used for estimating purposes only. Additional product range and options may be available for any specific application. Mass Flow (lb./hr.)

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Page 1: Mechanical Vapor Compression - Howden Documents/water/MVC_SpecSheet_April22... · Vapor compression relies upon a mechanical compressor or steam jet ejector to increase the temperature

Vapor compression relies upon a mechanical compressor or steam jet ejector to increase the temperature of the latent heat in steam to render it usable for process duties. Compression typically requires only 5% to 10% of the energy required to raise an equivalent amount of steam in a boiler.

In mechanical vapor compression, turbo fans, positive displacement blowers or centrifugal compressors are used to raise the pressure and temperature of the generated vapors. Since mechanical compressors do not require any motive steam, all vapors can be compressed to elevated pressure and temperature eliminating the need for subsequent recovery system. The energy supplied to the compressor constitutes the additional energy input to vapors. After compression of vapor and subsequent condensation of the same, hot condensate leaves the system.

The most complete product line

Mechanical Vapor Compression

www.howden.com

Typical product performance range based on properties of steam with an inlet

pressure of 14.7 psia (101.3 kPa-a) and inlet temperature of 212 ºF (100 ºC)

This product map above is representative of the typical performance range under the stated inlet conditions, and should be used for estimating purposes only. Additional product range and options may be available for any specific application.

Mass Flow (lb./hr.)

Page 2: Mechanical Vapor Compression - Howden Documents/water/MVC_SpecSheet_April22... · Vapor compression relies upon a mechanical compressor or steam jet ejector to increase the temperature

Mechanical Vapor Compression

www.howden.com©Howden Group Limited. All rights reserved. 2016. Howden and the flying H logo are registered trade marks belonging to Howden Group Limited.

Why Choose Howden?For further information contactHowden Roots900 West Mount StreetConnersville, IN, U.S.A.

For customer care call: Tel: 1800–55_ROOTS (76687)Email: [email protected]: www.howdenroots.com

As a cornerstone in the MVC market for over thirty years, and with over 1,500 worldwide installations, Howden understands the unique process, mechanical, and aerodynamic requirements of vapor compression applications, which differ from most other fan or compressor applications. Howden Roots blowers, compressors and Exvel Turbo Fans have been applied to multiple applications in a wide array of industries such as: pneumatic conveying, gas separation, wastewater treatment, steam compression, petrochemical production, and many others. Howden Roots blowers, centrifugal compressors and ExVel Turbo Fans are designed and fabricated for each and every project to the unique requirements of each customer and application. Our engineering design focuses on product integrity, long operational life and maximum efficiency.

Each unit is mechanically tested to ensure that the unit meets performance specifications. Our units are tested to design extremes of speed, pressure and temperature. We validate flow capacity oil circulation, operating clearances and vibration at these critical performance levels. We also offer testing that meets your special process requirements and qualifications.

Global Aftermarket Coverage: Roots maintenance and repair services provide professional methods and procedures that restore proper functionality and performance to each repaired unit. Access to Howden factory repair and service is available around the world.

Roots® rotary blowers

Flow: Up to 120,000 m3/hr (70,000 cfm)

Pressure: Up to 35 psig

Roots® single stage centrifugal compressor

Flow: From 5,000 to 225,000 scfm (7,850 to 353,440 Nm3/hr)

Specification compliance: API 617

Compressor stages: Single

ExVel® turbo fans

Flow: Up to 160 m3/second

Pressure rise: Up to and beyond one bar in standard atmospheric conditions

API 673 Compliance Options

Single Stage & 2-Stage arrangements

Stock No: 22042016