A gas holder is a sealed metal vessel designed for storing LPG and supplying it to consumers. Tanks are usually manufactured as horizontal tanks with a high neck for convenient LPG pumping.
Acting as a large gas cylinder, the gas holder ensures the stable supply of a propane-butane mixture to stoves, heating boilers, water heaters, and other devices.
Regardless of the price and dimensions, modern gas holders have mostly the same structure. High-strength sheet steel is used for the production of the all-metal tank body of a gas holder. On top, the vessel is covered with several layers of special paint that protects the metal from corrosion.
The upper part of a gas holder is fitted with a neck through which liquid gas is filled. The price of every LPG gas holder manufactured by Hermes-Ural includes the cost of the shut-off and control valves from the market-leading brands. Additional equipment includes a safety valve, level indicator, and other devices.
In the core of a gas holder’s operation lies the process of natural evaporation of LPG. The tank is filled to 85% of capacity; the remaining space creates a pressure difference causing the liquefied mixture to evaporate. The gas stream is first directed to the regulator that reduces the pressure to the safe level.
Types of devices
In-house production allows Hermes-Ural manufacture gas holders with various technical parameters, volume, and structure. LPG storage tanks differ:
- by rated pressure. The very low-end tanks can withstand up to 5 kPa. You can also order high-pressure models designed for operating under pressure of up to 1.8 MPa.
- by sealing method. Production of “dry” models implies employing standard shut-off valves. Also, LPG can be stored in “wet” gas holders, which are sealed with hydraulic gate.
- by structural specifics. Standard models for liquid gas have a single-wall housing, which helps reduce their cost. A double-wall tank is more durable and damage-proof, but its price is apparently higher
- by intended location. A ground gas holder would require thermal insulation. Underground deployment (below the ground freezing level) ensures that LPG is stored at positive temperatures.
Advantages of gas holders over electricity
Owners of non-gasified country households have to choose the best suitable energy carrier options. Usually, there are two solutions: to buy and install a mid-cost gas holder or use electricity. The following factors should be taken into account:
- electricity costs may be very high, while gas is a cheap energy carrier and can ensure cost curbing
- liquid propane-butane differs from electricity not only in price but also efficiency A naked flame can instantly provide a high temperature around. Use of electricity is always subject to heat losses
- a gas holder allows preparing a facility for the further centralized gasification in compliance with all the applicable requirements