173results about "Fresh water producing installations" patented technology

The present invention allows for the replacement of polluting and inefficient diesel-based marine propulsion systems. A natural-gas burning power plant in combination and at least one renewable energy source are combined to drive a ship's propulsion during times when the power plants are not in use for other activities including desalination and oil exploration. Renewable energies are used judiciously to reduce fossil fuel requirements but the present invention does not fully rely on renewable energy, which is not always available.

This invention relates to sea water process device on boat, which comprises heater, condenser, wherein, the heater adopts exchanger water box; the motor cooling tube and exchanger box are connected sealed; the exchanger box and condenser evaporation are connected; the box is located with sea supply tube connected with sea water tube; the condenser cooling chamber is connected to sea entrance water tube. The sea water enters the heat exchanging water box through motor cooling water through heat exchanger and then into condenser to process drinking water.

The invention discloses a waste heat desalinating system and a desalinating method for a ship. The system comprises a heat recovery steam generator, a steam compressor, an organic medium Rankine (ORC) cycle, a hot water tank, a cold water tank, a hot water heat recovery heat exchanger and a drain water heat recovery heat exchanger; the heat recovery steam generator is divided into upper and lower portions by a sealing plate, the lower portion is a flue gas heat recovery chamber, a first valve is arranged on the flue inlet, a flue gas purifier and a second valve for discharge are arranged on the flue gas outlet, and a cooling medium is introduced into a heat recovery heat exchange tube for heat exchange; one of a top steam exhaust port is connected to a vacuum pump through a sixth valve while the other path communicates with an inlet of the steam compressor; the outlet of the steam compressor is connected to the ORC cycle, and the ORC cycle is separately connected to the hot water tank and the hot water heat recovery heat exchanger. The system disclosed by the invention a waste heat steam compressing self-cycle seawater desalinating system and a cold and hot water preparation device for the ship, wherein the system is reasonable in structural design, simple to manufacture, high in quality and high in efficiency and continuously supplies.

Devices and methods for producing purified water. The device includes a reverse osmosis subsystem, a dehumidification subsystem and a purified water storage tank fluidly coupled to the subsystems such that purified water produced by each can be locally stored. A vehicular platform, such as a ship, can be used to locate the device adjacent a supply of saline water and humid air. A saline water inlet, membrane and purified water outlet cooperate in the reverse osmosis subsystem to allow preferential passage of water relative to salt in a saline water supply, while the dehumidification subsystem includes a heat exchanger that extracts moisture from the ambient humid air. Purified water produced by each of the subsystems can be used as a potable water source. When used in conjunction with a ship, part or all of the reverse osmosis subsystem can be submersed to a depth sufficient to generate a hydrostatic pressure that is in turn sufficient to passively operate the reverse osmosis membrane such that additional pressurizing equipment, such as a pump, is not needed. Furthermore, the temperature of the water purified by the reverse osmosis subsystem may be low enough to be used as a condensing agent for the ambient humid air passing through the dehumidification subsystem.

The invention provides an ocean light purse seiner. The ocean light purse seiner comprises a seiner body, a main engine, a fixed pitch propeller, outfitting equipment, fuel oil equipment, fire fighting equipment, life equipment, ventilation equipment, exhaust equipment, fire extinguishing equipment, pollution prevention equipment, lifting equipment, deck machinery equipment, navigation equipment, life-saving equipment, signal equipment, a power system, power distribution equipment and electrical equipment, wherein the outfitting equipment, the fuel oil equipment, the fire fighting equipment, the life equipment, the ventilation equipment, the exhaust equipment, the fire extinguishing equipment, the pollution prevention equipment, the lifting equipment, the deck machinery equipment, the navigation equipment, the life-saving equipment, the signal equipment, the power system and the power distribution equipment are all arranged on the seiner body. The ocean light purse seiner provided by the invention has a good ship type and high endurance, and is provided with a sea water desalination device, and thus the fresh water carrying quantity can be reduced, and the long-distance navigation endurance exceeds thirty days.

A method and apparatus for extracting energy from wind and wave motion using a common floating platform comprising a ship hull (10) which is moored in an offshore location and which supports wind turbines (27) for extracting energy from wind and wave energy extraction devices (12) positioned at least at one side of the hull (10) for extracting energy from wave motion relative to the hull (10). The method and apparatus may also use water current energy extraction devices. The hull (10) may also support a desalination plant (45) which uses the energy generated from the wind, wave and water current energy extraction devices.

The invention relates to an offshore solar sea water desalting plant which is specially characterized in that a ship body is internally provided with a lower tank, an upper tank and a light transmitting roof in sequence; the upper tank is provided with an air intake mechanism and an exhaust mechanism; in winter, fresh water is prepared by using a natural freezing method in the ship body, and meanwhile, fresh water is distilled from the non-frozen sea water by using the air intake mechanism and the exhaust mechanism. In other seasons, fresh water is prepared by using a solar sea water distillation method. The sea water desalting plant disclosed by the invention floats on the sea water and does not occupy land resources. The fresh water yield in winter is higher than that produced by the current device of distilling sea water only by solar radiation. The actions in the plant disclosed by the invention only depend on natural force without needing a power device, consuming electricity and manpower. The offshore solar sea water desalting plant disclosed by the invention can float on the sea, thereby freely choosing and parking in a good-quality sea water region to desalt sea water.

The invention discloses a system and method for LNG (liquefied natural gas) regasification and fresh water preparation of an LNG power ship, wherein the system comprises an LNG regasification system and a fresh water preparation system. The LNG regasification system is formed by enabling a liquid storage pot, a booster pump, a low-temperature heat exchanger, a condensing heat exchanger and a fuelinlet m of a main engine to be successively communicated through a pipeline; the fresh water preparation system comprises a system for preparing fresh water through a refrigeration method, a system for preparing the fresh water through a flash distillation method and a system for preparing the fresh water through an evaporation method. After the LNG regasification and NG (natural gas) burning, thewaste heat recovery process and the process for preparing fresh water by using seawater are organically combined, the fresh water is prepared through utilizing cold energy released in the LNG regasification process and thermal energy released by NG burning after the regasification, stepped and comprehensive utilization of LNG energy is realized, the cold energy and thermal energy discharged by the LNG power ship to pollute the environment can be reduced to the maximum extent, and the comprehensive utilization efficiency of the energy of the LNG power ship is substantially improved.

The invention discloses a lens-type sea water desalination and vegetable cultivation support vessel. The support vessel comprises a vessel body and is characterized in that a vessel body deck is fixed in the middle of the vessel body; a partition board is fixed between the vessel body deck and the vessel body and divides the vessel body into a fresh water bin and a rainwater bin; a vegetable planting chamber is fixed right above the rainwater bin; a protective wall, a down pipe, a root-proof layer, a water discharge pipe, a rainwater hole and an electric appliance control system are arranged at the right upper part of the deck; a water storage and drainage layer, a filter layer and a planting layer are sequentially arranged on the root-proof layer in the protective wall; a water pump is arranged in the rainwater bin; the water discharge pipe of the water pump is connected with a sprinkling irrigation pipe through the partition board; the rainwater hole is formed in the vessel body deck at the top of the rainwater bin and outside the protective wall; a light-transmitting board is arranged at the top of the vegetable planting chamber; a desalination chamber is fixed right above the vessel body deck at the top of the fresh water bin, a light-transmitting board is arranged at the top of the desalination chamber, multiple lens are fixed in a box of the desalination chamber through a lens rack, and multiple evaporation pots are fixed below the inside of the desalination chamber. The lens-type sea water desalination and vegetable cultivation support vessel can be fixed on an island or move along with a ship, sea water desalination and vegetable planting can be performed simultaneously, the cost is low, and the effect is good.

The invention discloses a ship fresh water tank anti-freezing system which comprises a heat exchanger arranged outside a fresh water tank. A first daily fresh water pump is arranged between the freshwater tank and the heat exchanger; a water outlet of the fresh water tank is connected with the first daily fresh water pump; the first daily fresh water pump is connected with a water inlet of the heat exchanger; a water outlet of the heat exchanger is connected with a water inlet of the fresh water tank. The ship fresh water tank anti-freezing system is easy to refit and low in implementation cost, reduces the construction cost and saves construction working hours; welding in the tank is omitted, and thus damage to a coating of the fresh water tank is avoided; power required for heating is reduced, and thus heat source consumption is reduced.

The invention relates to an LNG ship heat energy comprehensive utilization system, which comprises an LNG engine, a closed circulating heat exchanger, a waste gas heat exchanger, a tube bundle type heat exchanger, a CNG cylinder, an LNG steam cylinder, a heat dissipation coil pipe, a low-temperature cooling water tank, an evaporative fresh water making machine and a sea water pump, wherein the LNGengine provides heat energy for the whole system, and the LNG steam cylinder, the tube bundle heat exchanger and the CNG cylinder form a constant-pressure self-conversion module; a cabin temperatureconstant-temperature module is formed by the heat dissipation coil and used for maintaining the cabin temperature constant; the waste gas heat exchanger, the evaporative fresh water making machine andthe sea water pump form a fresh water making module; the closed circulating heat exchanger and the sea water pump form a closed circulating cooling module, and the low-temperature cooling water tankforms an open circulating cooling module which is used for guaranteeing good cooling of the LNG engine. In the invention, the heat energy generated by working of the LNG engine and cold energy generated by converting LNG into CNG are utilized, and the functions of self-pressurization and self-conversion of the system, constant cabin temperature, cooling of the engine and efficient desalination areachieved by reasonably controlling the flow of high-temperature cooling water and low-temperature cooling water.

The invention relates to the technical field of ship waste heat power generation, and discloses a ship waste heat-driving CO2 supercritical power generation coupled transcritical refrigeration cycle system comprising a supercritical carbon dioxide power generation system with CO2 as a circulating working fluid, and a carbon dioxide transcritical refrigeration system, wherein the supercritical carbon dioxide power generation system comprises a heat recovery device, an expander, a generator, a power generation cycle regenerator, a mixer I, a seawater desalination heat exchanger, a gas cooler, asplit valve I and a high pressure compressor; the carbon dioxide transcritical refrigeration system comprises a medium pressure compressor, the mixer I, the seawater desalination heat exchanger, the gas cooler, the split valve I, a subcooler, a sea water pump II, a refrigeration cycle regenerator, an expansion valve I, a gas-liquid separator, a split valve II, a high temperature evaporator, an expansion valve II, an evaporation condenser, a low pressure compressor and a mixer II. The invention effectively utilizes the thermal performance of carbon dioxide to have the coupling effect on the waste heat recovery working condition and the cooling working condition, so as to realize the combined design of the power generation function and the refrigeration function.

The invention relates to a seawater desalination plant to be installed atop a barge and designed to float on the sea surface in order to draw seawater from the sea and to perform desalination, as well as to a method for installing a seawater desalination plant to be installed on a barge, involving loading the seawater desalination plant to be installed on a barge onto a heavy cargo transport vessel, or loading the desalination plant together with a power generation plant onto a heavy cargo transport vessel to be towed by a tugboat for installation at the seaside of a region with a water shortage or a shortage of electricity, or of an island.