To convert natural gas to liquid form for transportation by ship, cooling installations are used both before filling the tanks and during sailing, to keep the gas in its liquid state. As the power supply on board is sometimes inconsistent, the Sirius Soft Starter 3RW44 from Siemens is used in combination with special firmware and the company’s polarity balancing control technology, to ensure that the compressors for the cooling systems can be optimally operated. Gas can be transported over long distances either via pipelines or by sea. On ships, the gas is converted to liquid form to reduce its volume. This liquefaction is performed in large-scale refrigeration plants, in which high pressures are generated as part of the process to cool the gas down to -162°C. High-pressure compressors are also employed during the journey to ensure the gas remains in a stable liquid state.
Contact Keshin Govender, Siemens, Tel 011 652-2412, email@example.com
Source: EE plublishers