|Using the Boiler Design Software a fire tube boiler design was optimized delivering the following
In 1999, Tucson Medical Center (TMC, www.tmcaz.com), Tucson, Arizona, USA installed three such
boilers of 4 MW/400 HP, 150 psi/10 bar, 6-metric ton steam per hour capacity. Data indicate a
consistent up to 15 percentage points seasonal efficiency increase over previous boilers. The boilers
carry serial numbers 001, 002 and 003 indicating first of the kind ones. Significantly improved part
load efficiency and no tubesheet cracks have been observed as of 2017 after 18 years of operation.
Letter of testimonial is available here. Existing fire tube boilers can be retrofitted to this design.
Animated file showing the boiler principle is available here. Instructions: Download the file and run it.
Icon on desktop will be created. Double click it to run the animation.
|BOILER DESIGN SOFTWARE
|View on fire tube steam boilers of advanced design at Tuscon Medical Center, Arizona, U.S.A. (pipe
delivering steam from the cooled door visible)
|Inner view on cooled door. Transverse plate prevents hot flue gas coming in touch with uncooled
steam area (above) from the cooled area below when door is closed.
|Rear view with rear smoke box and stack connector.
|Boiler plate with National Board number 001 indicating first of the kind boiler.