Timothy J. Coyle, P.E.

Timothy Coyle, an electrical engineer with 35 years of experience, specializes in planning, analysis, and design of critical power systems in institutional and utility facilities. He is a senior electrical engineer with KFI Engineers Inc. Email him at tjcoyle@kfi-eng.com.

Articles

ARTICLES

Motors: Terms Of Service, Part 2

Motors: Terms Of Service, Part 2

Round out this discussion of motor fundamentals for HVACR with a closer look at starting, standards, and more.
Timothy J. Coyle, P.E.
August 7, 2017
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This is the second half of a two-part article discussing principles and application of the AC induction motors that provide motive power for most of the equipment HVACR engineers specify.


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Terms Of Service: Motor Fundamentals

Terms Of Service: Motor Fundamentals

In the first of a pair of articles on motor fundamentals for HVACR, the author gets into everything from industry standards and service conditions to changing speeds, enclosures, and the often misunderstood service factor. You’ll want to save this one for your team’s reference library.
Timothy J. Coyle, P.E.
March 8, 2017
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Our objective in specifying motors for HVACR equipment is to start and run the driven equipment under all operating conditions reliably and with reasonable life expectancy.


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Switchgear, standby power system

Size Matters: Trends In Standby Power Systems For Health Care Facilities

These days, designs are favoring higher total system capacities, larger generators at higher output voltages integrated into “campus-type” power distribution systems, and security. Review design approaches, lessons learned, and relevant codes.
Timothy J. Coyle, P.E.
July 1, 2014
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Consolidation within the healthcare industry and the rise of regional medical centers has led to larger facilities, often spread over a large area in a campus environment.
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