exclusive "low water content watertube" design
is the most versatile boiler available in the marketplace
today. A once-through, forced circulation steam boiler
producing steam in just 5 minutes while maintaining
an 85% fuel-to-steam efficiency.
The MIURA EX SERIES design consists of
rows of vertical tubes sandwiched between two annular
headers. Both headers are encased in a castable refractory
with only the tubes exposed to flame and/or combustion
gases. The upper header is attached to the lower header
only by the tubes; as the tubes expand and contract,
the headers float up and down accordingly.
This 'floating header' concept, aided
by forced flow, greatly reduces stress and allows for
the use of cold feedwater without the fear of significant
thermal shock. The 'leaky tube' problems associated
with firetube and bent watertube designs have been eliminated.