Photo Release -- Multiquip Inc., a Leading Power Generator Manufacturer Chooses Exa's Simulations to Develop Quieter, More

Photo Release -- Multiquip Inc., a Leading Power Generator Manufacturer
Chooses Exa's Simulations to Develop Quieter, More Efficient Generators

BURLINGTON, Mass., March 19, 2014 (GLOBE NEWSWIRE) -- Multiquip, the
manufacturer of MQ Power^® generators recently chose Exa^® Corporation
(Nasdaq:EXA), a global innovator of fluids simulation solutions for product
engineering, to help them evaluate and reduce noise propagation from their
containerized power generators. Using Exa's aeroacoustic and aerodynamic
highly accurate simulations, Multiquip engineers were able to evaluate and
optimize their generator design.

Multiquip Power Generator Acoustic
 Exa PowerACOUSTICS simulation
 demonstrates noise propagation through
 the louvers of the Multiquip power
 generator container to the outside.

A photo accompanying this release is available at

In the design of housing for large equipment there is always a tradeoff
between ventilation and noise. The Multiquip team quickly discovered Exa's
suite of products could not only accurately simulate the container acoustics,
including the modeling of absorbing materials, but also help the designers
make them more efficient through combined aerodynamic and aeroacoustic
simulations and virtual design optimization. Multiquip ran numerous fully
complex, transient simulations that included the generator's rotating fan.
Initial simulation results quickly confirmed Exa's accuracy. Torsten Erbel,
Multiquip Vice President of Product Management, Engineering and Customer
Support remarked, "Exa's noise prediction validation data correlated within
two decibels of our experimental data. After the initial validation runs, we
had complete confidence in their solutions."

Noise propagation to the outside from all sides of Multiquip's 1000kW
Containerized Power Generators had historically been measured with outdoor
testing using physical prototypes — an expensive, error-prone and time
consuming solution. Exa's application engineers worked with Multiquip to
evaluate both far field acoustics (distance) as well as noise within the
container itself. Using Exa PowerFLOW^® and PowerACOUSTICS^®, engineers
carefully measured, analyzed and eventually optimized individual component
designs exclusively through simulation. "Although noise attenuation of the
container was the primary concern of this project, airflow patterns and noise
generated by the fan were very important to us. A lot of companies are doing
noise analysis prediction, but Exa has a unique advantage in offering combined
noise and flow analysis simultaneously — a true cost savings for the
manufacturer," remarked Pat Weaver, Multiquip Senior Engineer.

Multiquip has done additional evaluations on the performance of new acoustic
insulation materials. These include extensive louver design optimizations to
balance exterior noise reduction while maintaining proper cooling airflow, and
exhaust noise modeling. Exa has also analyzed Multiquip's new 1500kW container
and the results indicate a significant noise reduction. Weaver stated, "We are
pleased to have a solution that addresses the power generation market needs so

About Exa Corporation

Exa Corporation develops, sells and supports simulation software and services
to enhance product performance, reduce product development costs and improve
the efficiency of design and engineering processes. Our simulation solutions
enable our customers to gain crucial insights about design performance early
in the design cycle, thus reducing the likelihood of expensive redesigns and
late-stage engineering changes. As a result, our customers realize significant
cost savings and fundamental improvements in their engineering development
process. Our products include, PowerFLOW^®, PowerDELTA^®, PowerCLAY^®,
PowerVIZ^®, PowerSPECTRUM^®, PowerACOUSTICS^®, PowerINSIGHT^®, PowerCOOL^® and
PowerTHERM^® along with professional engineering consulting services. A
partial customer list includes: AGCO, BMW, Ford, Hyundai, Jaguar Land Rover,
Kenworth, MAN, Nissan, Peterbilt, Renault, Scania, Toyota, Volkswagen, and
Volvo Trucks.

Founded in 1991, the company is headquartered at 55 Network Drive, Burlington,
MA, USA 01803. Tel: 1.781.564.0200; Fax: 1.781.564.0299; Email:;
URL:; (Nasdaq:EXA)

About Multiquip Inc.

Founded in 1973, Multiquip is one of the largest, most diversified
manufacturers and suppliers of world class quality products and solutions for
the construction, industrial, telecom, government, non-commercial,
entertainment, and oil and gas exploration markets. Multiquip's comprehensive
product portfolio encompasses light to medium construction equipment, power
generators and lighting. Servicing customers worldwide, Multiquip distributes
its products in more than 70 countries through thousands of authorized
distribution partners. For more information, visit

For more information about Exa Corporation or images please contact:

Michelle Murray-Ross, Exa Corporation, 1.781.564.0251;

Exa, PowerFLOW, PowerCLAY, PowerTHERM, PowerCOOL, PowerSPECTRUM, PowerDELTA,
PowerVIZ, PowerACOUSTICS and PowerINSIGHT are registered trademarks of Exa

MQ Power is a registered trademark of Multiquip Inc.

The photo is also available via AP PhotoExpress.

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