The Sheraton Boston Hotel’s Case for Water and Energy Savings.
purchasing the foodservice industry’s most water- and energy-efficient
dishwashers, the Sheraton Boston Hotel received an energy conservation
program rebate check for $97,000 from KeySpan Energy.
Sheraton Boston purchased three Hobart FT-900 Flight-type Warewashers
that came equipped with Hobart’s exclusive Opti-Rinse™ system. When
compared with the previous rinse system, the Hobart FT-900 Warewashers
deliver documented savings of up to 48 percent less final rinse water
and comparable savings in energy used to heat the water.
industry’s existing conventional rinse nozzles produce an inefficient
fan spray pattern that tends to be heavier on the outside edges and
more atomized (producing smaller droplets) in the center of the
contrast, Hobart’s Opti-Rinse system nozzles rely on low and high
pressures that cause the water stream to oscillate back and forth in an
S-pattern as it escapes the nozzle
The key to this new system is the larger
drops that are created and the drastic improvement in heat transfer
they provide,” said Phil Ratermann, general manager of Hobart’s
Warewash business unit. “The result is more uniform coverage and a more
forceful stream of water moving in a rapid back-and-forth motion at 30
times per second.”
Energy Program Engineer Katie O’Rourke said KeySpan awards energy
conservation rebates of up to $100,000 for commercial customers.
of these programs is for new, underused technologies. This Hobart
Opti-Rinse system uses half the hot water,” said O’Rourke. “We
monitored the Sheraton’s old dishwashing units with water-flow meters
for about a month before the new equipment went in. Because we left the
flow meters on the new equipment when it was installed, we’ll be able
to calculate the savings for the Sheraton Boston."