4
MECHANICAL SPECIFICATIONS AND CAPACITIES
Capacity Notes
Approximately 172 BTUs (400 kJ) are required to raise the
temperature of one pound (Kg) of water from 40° to 212° F (4°
to 100°C). An additional 970 BTUs (2250 kJ) are required to
change one pound (Kg) of water to water vapor.
The addition of ¾" (25 mm) rigid foil faced fiberglass insula-
tion (optional) on all surfaces of evaporating chamber will
increase unit efficiency by approximately 2%.
Another factor to consider is condensation steam loss from
hoses and tubes. Use the following steam loss guidelines:
• vapor hose: 0.15 lbs/ft/hr (223 g/m/h)
• insulated pipe: 0.05 lbs/ft/hr (74 g/m/h)
• dispersion tubes: 0.5 lbs/ft/hr (744 g/m/h)
Table 4-1: Mechanical Specifications and Capacities
* Heater stage identifies the number of contactors.
** Three-phase power supply connection. All heater loads are wired delta.
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