Abstract: A system for distilling sea or brackish water includes a feed water arrangement for supplying feed water from a feed water source to one or more flashing stages. Each flashing stage has a water flash evaporator for vaporizing at least part of the water therein, and a condenser for receiving the vapour and converting at least a part of the vapour into distilled water. A heat storage arrangement provided with a heat generating source for storing heat energy is used to heat a fluid medium flowing through it. A heat exchange arrangement receives the hot fluid medium and transfers heat to a stream of vapour flowing under pressure from each flashing stage. The vapour leaving the heat exchange arrangement being at a raised temperature is arranged to be condensed into water at the condenser and to transfer some of its latent heat to the evaporator.

Abstract: A distillation system is provided for recovering water from sea water and other polluted water source. The system has a heat engine embodying Carnot cycle and a Rankine cycle formed by heat exchangers, flash evaporator and condenser. Burnt gases from the engine such as a jet engine no longer fit for flying are directed into a duct where the exchangers are located. Sea water is pumped into the heat exchanger for preheating by residue heat in the duct and then into the exchanger for further heating. A recirculating pump raises water pressure in the exchanger for increasing boiling point to about 165° C. The heated water is fed into the evaporator where it changes into vapour and condensed into water by the condenser. The jet air stream is used to create Venturi effect for maintaining sub-atmospheric pressure in the evaporator. Any solid left in the evaporator is removed by a transfer mechanism.

Abstract: A focusing nozzle for producing and jetting a precisely focused, sustained cohesive jet of a mixture of a fluid and abrasive material, having a long coherence length and a prolonged centerline pressure for obtaining clean, precise, sharp-edged kerfs, cuts and grooves in hard substances.

Abstract: The present invention relates generally to a non-clogging slurry nozzle apparatus and method for avoiding blockages in slurry nozzles associated with the jetting of mixtures of soluble and/or insoluble abrasives and high pressure fluids. The apparatus involves the use of a pressure actuator which opens and closes gates of a valve, permitting a compressed gas to enter the nozzle and remove all abrasive material from a nozzle when jetting is interrupted, thus preventing the abrasive material to remain in the nozzle where it may adhere with residual moisture and form blockages. The present invention lessens the opportunity for abrasive material blockages in slurry nozzles and improves the efficiency of cleaning operations by reducing the need to interrupt blasting operations to remove abrasive blockages from the slurry nozzle.