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Capacities from 200
gph to 3000++ gph
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For Propane,
Butane, and other LPG
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Shell-and-Tube Heat Exchanger
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ASME
"U"-stamped
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Ex-proof Class I, Div 1, Group D
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Small Footprint,
High Efficiency
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PLC Controls with
First-Out Monitor
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Local Start/Stop Station
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Dual
Liquid Carryover Protection with
"Smart" Liquid Carryover Function and
Ultrasonic Liquid Level Control
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UL
stamped external Relief Valve
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All-welded Liquid Inlet Assembly
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Flanged Steam Inlet with Steam Temperature Regulator and
Steam Back Check
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Option: Walk-in Control
Room
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Option: Remote
Monitoring and Operation (Modem, Ethernet, Wireless)
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Option: Integration
with LPG/Air Mixers for Standby Systems and
Peak Shaving Systems
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Option: Chinese Pressure Vessel Approval
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Option: 6-inch color LCD Display with Touch
Screen Operator Interface, alarm history, and local trend recording.
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General Description
Alternate Energy
Systems offers a complete line of circulating-hot-water vaporizers in
capacities from 200 gallons per hour to 3000 gallons per hour.
The
heat exchanger tube bundle is of multi-pass design to transfer the maximum heat to the
liquid. The tube bundle and all propane piping conform to Section VIII,
Division I of the latest edition of the ASME Boiler and Pressure Vessel
Code. The pressure vessel carries the ASME ”U” stamp and is National
Board registered.
VWB vaporizers in
standard configuration include temperature regulator; dual liquid
carryover protection through ultrasonic liquid level transmitter in the
pressure vessel, and “smart” liquid carryover protection with Rosemount
pressure transmitter and temperature transmitter in the vapor outlet;
and liquid inlet valve. Temperature gauges in water inlet and outlet, and in pressure
vessel shell and vapor outlet, are standard.
Vaporizer design,
wiring, controls, and electrical components and their installation
comply with the latest editions of NFPA #58 and NFPA #70.
All safety devices of
the vaporizer, including the dual liquid carryover protection, are
monitored by a programmable logic controller (Allen-Bradley MicroLogix),
which is connected to an operator interface (Allen-Bradley
PanelView-300Micro). The operator interface provides start/stop control
for the vaporizer; it displays the system status, and any failure
conditions that may occur, in plain English (with date/time stamp). The
electrical enclosure for the PLC and the operator interface are to be
installed in a remote, non-classified location.
A small explosion-proof
enclosure at the vaporizer provides local start/stop and alarm reset
functions.
NOTE:
The hot-water consumption of
VWB Vaporizers is proportional to the actual vaporization rate. The
consumption rates given in the table below are based on Water Flow Requirements
are based on 185°F (85 °C) water temperature and 40°F (22°C) inlet/outlet
temperature drop. |
