摘要:
A magnetic signature minesweeping device (10) comprising a water driven turbine power generator (12) and a superconducting material magnet (14), wherein the turbine power generator is arranged, in use, to supply a driving current for the superconducting material magnet (14) when the minesweeping device is towed through the water. In a further embodiment a control unit (24) is arranged, in use, to control the magnetic output of the superconducting magnet (14) and the power output of the turbine power generator (12). Further more a method of minesweeping using the device (10), and an array of the devices (10) is disclosed.
摘要:
Liquid oxygen and/or liquid nitrogen are made by removing carbon dioxide and water vapor from air, compressing the purified air in a re-cycle compressor and dividing the purified compressed air into first and second streams. Part of the first stream is expanded in a first expander and the refrigeration produced is used to cool both the first and second streams in a first heat exchanger. On leaving the first heat exchanger, the second stream is expanded in a second expander and the refrigeration produced is used to liquify at least part of the remainder of the first stream. The liquid stream is expanded and introduced into a fractionation column from which liquid nitrogen and/or liquid oxygen can be withdrawn. Expanded air from the first and second expanders is returned to the re-cycle compressor although part of the expanded air from the second expander is preferably introduced into the fractionation column. The invention is particularly suited to installations producing in excess of 100 tons of liquid per day and, at this size, preferred designs offer an estimated 51/2 to 9% power savings over the known prior art.
摘要:
A magnetic signature minesweeping device (10) comprising a water driven turbine power generator (12) and a superconducting material magnet (14), wherein the turbine power generator is arranged, in use, to supply a driving current for the superconducting material magnet (14) when the minesweeping device is towed through the water. In a further embodiment a control unit (24) is arranged, in use, to control the magnetic output of the superconducting magnet (14) and the power output of the turbine power generator (12). Further more a method of minesweeping using the device (10), and an array of the devices (10) is disclosed.
摘要:
A magnetic signature minesweeping device comprising a water driven turbine power generator and a superconducting material magnet, wherein the turbine power generator is arranged, in use, to supply a driving current for the superconducting material magnet when the minesweeping device is towed through the water. In a further embodiment, a control unit is arranged, in use, to control the magnetic output of the superconducting magnet and the power output of the turbine power generator. Furthermore, a method of minesweeping using the device and an array of the devices is disclosed.
摘要:
A magnetic signature minesweeping device comprising a water driven turbine power generator and a superconducting material magnet, wherein the turbine power generator is arranged, in use, to supply a driving current for the superconducting material magnet when the minesweeping device is towed through the water. In a further embodiment, a control unit is arranged, in use, to control the magnetic output of the superconducting magnet and the power output of the turbine power generator. Furthermore, a method of minesweeping using the device and an array of the devices is disclosed.
摘要:
In a pumped liquid oxygen plant the liquid oxygen is vaporized and warmed against part of the feed air which is compressed in compressor (15) and divided into a first sub-stream (20) at 56.4 bars A and a second sub-stream (16) at 42 bars A. The first sub-stream (20) is cooled against the evaporating oxygen in the heat exchanger (17). It is then expanded at valve (21) and the largely (on a molar basis) liquid product is fed to the high pressure column (10) through pipe (22). The second sub-stream is cooled in heat exchanger (17) and is then expanded in generator loaded expander (18). The cold gas in then used to cool the first sub-stream in heat exchanger (17) and is recycled to the compressor (15).