摘要:
A process for regasifying a fluid and generating electrical energy includes subjecting an operating fluid to 1) pumping, the pumping step including a low pressure pumping step 1a) and a high pressure pumping step 1b), 2) heating in a recuperator to obtain a heated flow, the heating step including a low temperature heat recovery step 2a) and a high temperature heat recovery step 2b), 3) further heating through a high temperature source to obtain a further heated flow, 4) expanding in a turbine, with generation of electrical energy to obtain an expanded flow, 5) cooling by heat exchange to obtain a cooled flow, and 6) condensing the flow of the operating fluid and regasifying the fluid. After low pressure pumping, a portion of the flow of the operating fluid is subjected to recompression to obtain a flow combined with the flow of the operating fluid obtained from step 2a).
摘要:
A gas storage/supply system includes a gas storage material capable of reversibly absorbing and desorbing a gas, a gas storage tank having the gas storage material sealed therein, a chemical heat storage material capable of making a forward reaction and a reverse reaction with an operation medium, a chemical heat storage tank having the chemical heat storage material sealed therein, a heat exchange mechanism for transferring heat between the gas storage tank and the chemical heat storage tank, and a control mechanism for controlling the gas storage/supply system such that gas absorption heat released upon absorption of the gas to the gas storage material is stored in the chemical heat storage tank and gas desorption heat which is necessary for desorption of the gas from the gas storage material is supplied from the chemical heat storage tank.
摘要:
A method and system delivers a cryogenically stored fuel in a gaseous state into the air intake system of a gaseous fuelled internal combustion engine. The method involves measuring the pressure in the vapor space of the cryogenic storage vessel, comparing the measured pressure to a required fuel supply pressure and supplying fuel in gaseous state directly from the vapor space of the cryogenic storage vessel to the fuel delivery line that supplies fuel to the engine, when the pressure measured in the vapor space of the cryogenic storage vessel is equal to or higher than the required fuel supply pressure. The method further involves activating a cryogenic pump to deliver fuel to the internal combustion engine from the liquid space of the cryogenic storage vessel when the measured pressure in the vapor space is lower than the required fuel supply pressure.
摘要:
A skid for capturing refrigeration from liquefied natural gas vaporization is disclosed comprising a first heat exchanger mounted on the skid, the first heat exchanger having a natural gas inlet, a natural gas outlet, a process fluid inlet, and a process fluid outlet. The process fluid is configured to flow from the process fluid inlet through the first heat exchanger to the process fluid outlet and then to the process fluid inlet. Other embodiments of the system for capturing refrigeration from vaporization of liquid natural gas, and methods for its use, are described herein.
摘要:
A fuel storage and distribution system for a gas-fueled sea-going vessel comprises a tank room that constitutes a gastight space enclosing tank connections and valves associated with them. A part of a refrigeration or air conditioning circuit reaches into said tank room. A first local heat transfer circuit is configured to receive heat from said part of the refrigeration or air conditioning circuit in said tank room and arranged to transfer such received heat to liquefied gas fuel handled in said fuel storage and distribution system.
摘要:
A gas storage/supply system includes a gas storage material capable of reversibly absorbing and desorbing a gas, a gas storage tank having the gas storage material sealed therein, a chemical heat storage material capable of making a forward reaction and a reverse reaction with an operation medium, a chemical heat storage tank having the chemical heat storage material sealed therein, a heat exchange mechanism for transferring heat between the gas storage tank and the chemical heat storage tank, and a control mechanism for controlling the gas storage/supply system such that gas absorption heat released upon absorption of the gas to the gas storage material is stored in the chemical heat storage tank and gas desorption heat which is necessary for desorption of the gas from the gas storage material is supplied from the chemical heat storage tank.
摘要:
Systems and methods for storing energy in gaseous form in submerged thin-walled tanks are secured to the ocean or lake floor but are open to the water at the tank bottoms and are configured to be filled with gas while submerged.A conduit operatively connected to the tanks provides flow from a surface source of an energy-containing gas to the tank interiors. Surface or subsurface pumping apparatus which may include piston-less pressure cylinders or have leveraged pistons provide a preselected flow rate of the energy-containing gas into the containment structure interior against a back pressure essentially equal to the static pressure of the body of water at the location of the tank to displace an equivalent volume of water through the open bottom. The conduit can be configured to allow heat transfer to vaporize liquefied gas prior to storage. Hydrogen gas can be generated and stored within the tank using Aluminum activated with Galinstan.
摘要:
Provided are a cold heat recovery apparatus using an LNG fuel and a liquefied gas carrier, in which costs involved in the installation and operation of a reliquefying facility can be reduced by recovering and utilizing cold heat of the LNG fuel when boil-off gas of liquefied gas as a cargo is reliquefied, and energy saving and reduction of environmental pollutants can be achieved because additional energy is not consumed in a reliquefaction process. A cold heat recovery apparatus for processing boil-off gas generated in a liquefied gas tank by using cold heat of an LNG fuel includes cold heat usage means using cold heat of an LNG supplied from an LNG fuel tank storing an LNG as a fuel to an engine, so as to processing the boil-off gas generated in the liquefied gas tank.
摘要:
A cryogenic liquid such as liquid nitrogen or liquid carbon dioxide is pumped via a high pressure pump to a vaporizer where the liquid becomes gas. The higher pressure gas is cooled by a coolant exchanger and can be fed to an onsite unit operation such as an enhanced oil recovery operation. The coolant exchanger is in a thermal exchange relationship with a combustion engine which powers a hydraulic pump which feed hydraulic fluid to drive the high pressure pump.
摘要:
Methods and systems for regasifiing LNG are provided. A method for regasifying liquefied natural gas (LNG) includes providing heat to a LNG regasification process from a power plant. If the heat is not sufficient, additional heat can be provided to the LNG regasification process from a cooling tower operated in a warming tower configuration.