Engineered Systems articles from December 2008

Engineered Systems archives from December 2008

Engineering in the Warranty Phase.(Back 2 Basics: Based on Cx-3 ATC/FPT software)
December 1, 2008... * The design engineer should continue to monitor the project during the warranty phase by requesting the facility manager e-mail system trending data to confirm basis of design compliance. * The design engineer should make a point of...

Third-Party Cx and TAB Engineering in the Warranty Phase.(Back 2 Basics: Based on Cx-3 ATC/FPT software)
December 1, 2008... * The commissioning team during the warranty phase is the same team who participated in the construction phase when deferred seasonal FPT demonstration (e.g., heating system demonstrated in the heating season). Pertinent trending data will be...

Hotel, motels, and dormitories: commissioning and project closeout checklist.(HVACR Designer Tips)
December 1, 2008... Equipment type: Rooftop unit with energy recovery Equipment designation: ERU-1 Barcode designation: 11111 Area saved: Dormitory Equipment location: Rooftop BASIS OF DESIGN * Review and confirm design intent has been...

Wire-to-shaft efficiency for HVAC pumps: designers need to have a way to compute part-load energy consumption scenarios. However, the data aren't always available. Here, we look at why some good math is worth the effort.
December 1, 2008... [ILLUSTRATION OMITTED] Wire-to-shaft efficiency for variable-speed centrifugal pumps defines the percentage of power inputted to the VSD that results in energy in the pump shaft. It is not a simple multiplication of individual motor and...

Duct smoke detector.(Products In Focus)
December 1, 2008... [ILLUSTRATION OMITTED] The InnovairFlex[TM] duct smoke detector line can accommodate multiple installation footprints to overcome mounting constraints and features false alarm immunity, a broad temperature range from -4[degrees]F to...

Filters.(Products In Focus)
December 1, 2008... [ILLUSTRATION OMITTED] The company's Defiant MARK80 pleated filters feature mechanical MERV 8 performance before and after a conditioning step. Other features include a lower initial resistance to promote energy savings, 100% synthetic...

Venters.(Products In Focus)
December 1, 2008... [ILLUSTRATION OMITTED] The Drainer NLD Series free-floating liquid drainer and Venter NV Series free-floating air venter are used on pressurized air, gas, and liquid systems such as hydronic heating systems, cooling systems, and liquid...

Steam traps.(Products In Focus)
December 1, 2008... The USTS II is designed as a complete steam main drip or tracer steam trap station and is rated for use at maximum temperature of 750[degrees]F and pressure of 650 psig. Standard features include two isolation valves, one integral stainer with...

Drives.(Products In Focus)
December 1, 2008... [ILLUSTRATION OMITTED] The H2 family of washdown adjustable-speed drives are rated NEMA 4X and available from 1 through 10 hp and in open-loop, encoderless, and closed-loop vector and servo configurations. All drives in the H2 line share...

Glossary.
December 1, 2008... Here are some common abbreviations and terms found in the pages of Engineered Systems. A A/C--air conditioning ach--air changes per hour AE--architectural and engineering; or architect and engineer ...

Combining sales with education: the next generation cooks up a plan of attack.(Tomorrow's Environment)
December 1, 2008... Back in April of last year, I wrote about a few sales engineers who were influential in my HVAC and business education that had passed on. Recently, I was talking with one of this 21st-century generation of sales engineers, and she came up...