VOT Cylinder Valve
The standard configurations and schematic views of a VOT cylinder bank according to the consumption pattern of the user is as below:
Schematic Views of VOT Cylinder Installation for Commercial Kitchen
LOT (Liquid – Off – Take)
LOT Cylinder Valve
The standard configurations and schematic views of a LOT cylinder bank according to the consumption pattern of the user is as below:
Schematic View of LOT Cylinder Installation for Industries
Limitations of VOT Installations:
1. Inadequate cylinder banks result in pressure drops in the VOT system throughout the year especially in peak hours or winter season. It is initially designed for the usage estimated and installed at the initial commencement of the project and subsequently more burners and equipment fired on LPG are added but the VOT cylinder bank remains the same.
2. There are occurrences of cylinders getting frozen with ice formation on the exterior of the cylinders, hot water buckets are used to increase the natural evaporation rate of LPG, which is a wrong & dangerous practice. Unnecessarily money and energy are spent to recover the residual LPG and increase the pressure output from VOT cylinders.
3. It is observed that the full cylinder bank is not pressed into service by the operators. Less number of cylinders are connected to the bank and fresh cylinders are connected to the same cylinder bank in cycles (regular intervals) to maintain the pressure in the system. Dedicated personnel are deployed for this purpose only.
Advantages & Benefits of LOT Installations:
1. A LOT cylinder bank substantially reduces:
a. Space required for storage of cylinders.
b. Cylinder handling in Gas Bank area.
c. The residual gas loss that occurs in VOT cylinders, which returns unused.
2. Absolutely safe and recommended where LPG consumption is relatively high in places like hotels and industries and installing a bulk tank is not an option.
3. Gas bank sizing depends on consumption of LPG, per hour and per day, and not on vapour conversion capacity of cylinders. Using lesser number of cylinders results in reduction in size of cylinder bank and reduced cylinder handling.
4. No residual amount returned unused in the cylinder, thus ensuring zero loss of LPG and increased savings for consumers.