Alternate Energy Systems, Inc.
LPG Vaporizers - LP/Air Blenders - Gas/Gas Blenders - NatGas Backup Systems - PeakShaving Systems
Circulating-Hot-Water Vaporizers
Models VWB-400 to VWB-6000

  • Capacities from 200 gph to 3000++ gph
  • For Propane, Butane, and other LPG
  • Shell-and-Tube Heat Exchanger
  • ASME "U"-stamped
  • Ex-proof Class I, Div 1, Group D
  • Small Footprint, High Efficiency
  • Siemens or Allen-Bradley PLC Controls
  • High-resolution color LCD Display with Touch Screen Operator Interface, alarm history, and local trend recording.
  • Remote Monitoring and Operation
  • Local Start/Stop Station
  • "Smart" Liquid Carryover Protection
  • UL-stamped external Relief Valve
  • All-welded Liquid Inlet Assembly
  • Flanged Hot-Water Inlet with Temperature Regulator
  • Option: Walk-in Control Room
  • Option: Wireless Remote Access
  • Option: Integration with LPG/Air Mixers for Standby Systems and Peak Shaving Systems

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; "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. They are suitable for installation in Class I, Div. 1, Group D locations.

All safety devices of the vaporizer, including the dual liquid carryover protection, are monitored by a programmable logic controller (Allen-Bradley MicroLogix-1100 or Siemens S7-1200), which is connected to an operator interface with high-resolution LCD display and touch screen. 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 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 185°F (85 °C) water temperature and 40°F (22°C) inlet/outlet temperature drop.

 
Model
Number
Nominal Capacity
(Propane & LPG up to 30/70 Propane/Butane)
Water Flow
(185 °F / 85 °C)
Shipping
Weight
Dimensions
L x W x H
inches / m
gph MMBTU/h kg/h MMkcal/h gpm l/min lb / kg
VWB-  400 200 18.4 400 46 23 85 600 / 275 18" x 25" x 88"
0.45m x 0.65m x 2.24m
VWB-  800 400 37 800 93 46 170 770 / 350
VWB-1200 600 55 1200 139 69 255 1060 / 480
VWB-1600 800 74 1600 185 92 340 1150 / 520
VWB-2000 1000 92 2000 232 115 425 1570 / 715 27" x 37" x 94"
0.6m x 0.95m x 2.40m
VWB-3000 1500 138 3000 348 173 638 1880 / 855
VWB-4000 2000 184 4000 464 230 850 2350 / 1065 34" x 43" x 103"
0.9m x 1.10m x 2.65m
VWB-5000 2500 230 5000 580 288 1063 2520 / 1145
VWB-6000 3000 276 6000 696 345 1275 2910 / 1320
Common  Specifications
Design  Temperature 650 °F /  343 °C
Design  Pressure 250 psi  / 17 bar
Test  Pressure 375 psi  / 26 bar
Relief  Valve Setpoint 250 psi  / 17 bar
Electrical AC 110 V  60 Hz, Single Phase, 5 A  /  AC 220/240 V 50 Hz,  Single Phase, 5A
Weights and dimensions are approximate.  Dimensions are for heat exchanger shell only.
Trim and accessories are not included in dimensions. Specifications are  subject to change without notice.
© Copyright 2006 ..... 2016 by Alternate Energy Systems, Inc. - All Rights reserved.          Last Update 6 Feb 16