Product Overview
Lock-Temp
®
Storage Tanks
Lochinvar Lock-Temp Tanks have been specifically designed
and engineered to provide a high volume supply of hot water
at a constant outlet temperature. The unique Lock-Temp baffle
chamber design is so efficient that, regardless of the rate of
hot water flow, 80% of the stored volume of hot water can be
drawn from the storage tank without a drop in the pre-set outlet
temperature.
Since 1/3 less hot water storage is required with Lock-Temp
Storage Tanks than with ordinary storage tanks, there are several
important economic features to consider: Lower Standby
Losses, Smaller Footprint Required, Lower Installed Cost,
Reduce Water Heater Operation Cost.
In operation, Lock-Temp Storage Tanks utilize a unique
water baffle chamber to eliminate turbulence and establish a
positive, piston-like displacement system. Cold water entering
the system is directed into the built-in baffle chamber, where
water turbulence is eliminated. Eliminating turbulence allows
natural physical properties to force hot water to the top of the tank
and cold water to the bottom. The resulting effect creates nearly
perfect stratification allowing the hot water to be drawn from the
tank first.
The Lock-Temp system makes Lochinvar Storage Tanks more
efficient. Consider that a typical storage tank delivers only about
60% of its stored water volume at the desired temperature while
Lochinvar tanks with the Lock-Temp baffle deliver a minimum
of 80%. This efficiency allows for more economical sizing of
storage tanks. A design calling for 400 gallons of 180ºF water
would require a 670 gallon standard tank while a Lock-Temp tank
would deliver the same 180ºF volume using only a 500 gallon
tank. A 170 gallon savings.
In conventional storage tanks, water circulation or a
heavy draw of hot water from the top of the tank causes
an incoming rush of cold water, creating turbulence
in the tank’s stored water supply. The result is
inter-mixed hot and cold water that requires constant
adjustment at the fixtures to maintain the desired
temperature. Lochinvar Lock-Temp Storage Tanks
eliminate these problems with a unique inner chamber
baffle that absorbs and flattens turbulence caused by
incoming water. The Lock-Temp baffle also permits
hot and cold water to stratify, directing the hottest
water to the top of the tank and the colder water to the
bottom for return to the heater.
Advantages of a Lock-Temp storage tank over conventional storage tank
Lock-Temp Design Locks Hot Water at Top,
Cold Water at Bottom.
Glass-Lined, Jacketed & Insulated
or Bare ASME Tanks
An ordinary 180 gallon tank
and a 180 gallon Lock-Temp
tank were compared at a set
water temperature of 180ºF.
Water was withdrawn at a rate
of 12 GPM under controlled
conditions. The Lock-Temp tank
provided 141 gallons of water at
set point and the conventional
tank only provided 30 gallons
of water at set point before the
delivery temperature dropped
below 180°F