2317 results about "Recuperator" patented technology

An integrated fuel cell unit (10) includes an annular array (12) of fuel cell stacks (14), an annular cathode recuperator (20), an annular anode recuperator (22), a reformer (24), and an anode exhaust cooler (26), all integrated within a common housing structure (28).

An apparatus including a reciprocating internal combustion engine and a thermochemical recuperator in which a fuel is reformed. The thermochemical recuperator is heated by exhaust gases from the reciprocating internal combustion engine and steam for the reforming process is produced by passing feed water through an engine lubricating oil heat exchanger, an engine cooling system heat recovery system and an exhaust gas heat recovery system arranged in series.

A thermal management system and method of use are provided, the system including a heat exchanger, a refrigeration system, a coolant loop thermally coupled to the heat exchanger, and a by-pass valve that regulates the amount of coolant within the coolant loop that either passes through the heat exchanger or is diverted away from the heat exchanger. The coolant loop is thermally coupled to the battery pack of an electric vehicle.

The invention provides a method of converting heat energy to a more usable form using a multi-component working fluid mixture that contains ammonia and water. The working fluid is operated in a thermodynamic cycle that includes liquid compression (30), vaporization (33), expansion through a turbine (34) and condensing (36). The multi-component fluid varies in temperature during phase change allowing for the use of counter-flow heat exchangers for the heater (33), cooler (36), recuperator and pre-heater (32). Significant recuperation is possible due to the temperature change during phase change. A pre-heater (32) can be applied to ensure only single-phase vapour exists within the heater. The invention can be used in conjunction with a biomass combustor or with waste flue gas from an existing industrial process. The coolant exits at a temperature sufficient to allow use in external heating applications or to minimize the size of external heat rejection equipment

The invention relates to fuel cell systems with improved thermal efficiency. The systems include a fuel cell that generates electrical energy using hydrogen and a fuel processor that produces hydrogen from a fuel. Some heat efficient systems described herein include a thermal catalyst that generates heat when the catalyst interacts with a heating medium. The heat is used to heat the fuel cell. The thermal catalyst may be disposed in, proximity to the fuel cell, or remote from the fuel cell and a heat transfer pipe conducts heat from the catalyst to the fuel cell. Another thermally efficient embodiment uses a recuperator to transfer heat generated in the fuel cell system to incoming fuel. A fuel cell package may also include a multi-layer insulation arrangement to decrease heat loss from the fuel cell and fuel processor, which both typically operate at elevated temperatures.

An equipment for recovering and utilizing the heat energy generated by burning yellow phosphorus and a system for preparing phosphoric acid by the hot method are disclosed. It is composed of steam manifold and burning tower with heat energy recovering function. The burning tower consists of ring-shaped membrane heat exchanger with fins, heat-insulaitng enclosed casing, P2O5 gas outlet tube, connecting tube of phosphorus sprayer, etc.. Its advantages include low consumption of coal, water and energy, low cost and reduced environmental pollution.

A hybrid power generation system for generating electrical power comprises a compressor for producing a compressed oxidant and a recuperator in flow communication with the compressor. The hybrid power generation system further comprises a fuel cell assembly comprising a plurality of fuel cells in flow communication with the recuperator to provide the compressed oxidant for the fuel cell assembly. The fuel cell assembly further comprises a cathode inlet for receiving the compressed oxidant, an anode inlet for receiving a fuel stream, an anode outlet in flow communication with an anode exhaust stream and a cathode outlet in flow communication with a cathode exhaust stream, wherein at least a portion of the fuel reacts with the oxidant to produce electrical power. The hybrid power generation system further comprises a tail gas burner in flow communication with the anode outlet and the cathode outlet. The tail gas burner is configured for combusting a mixture of at least a portion of the anode exhaust stream and at least a portion of the cathode exhaust stream and producing a hot compressed gas. A control system is used for controlling the amount of the cathode exhaust stream introduced in the tail gas burner for stable combustion and reduction of fuel and carbon monoxide emission. The hot compressed gas from the tail gas burner is introduced to a turbine, where the hot compressed gas is expanded, thereby producing electrical power and an expanded gas.

A process is described for the operation of a gas turbine plant with CO2 as working medium, in which in at least one combustion chamber hydrocarbons are combusted in a CO2 atmosphere enriched with oxygen to flue gases, which largely consist of CO2 and H2O and which are expanded within a turbine stage following the at least one combustion chamber, and are then compressed in a compressor stage and also at least partially condensed in a following condenser, so that at least portions of the CO2 and H2O are liquefied and partially drawn off together with uncondensed flue gas constituents, and so that a main portion, not drawn off, of liquid CO2 is compressed by means of a pump unit, preheated in at least one recuperator stage, and is again supplied to the combustion chamber. The invention is distinguished in that the compressed and preheated main portion CO2 is pre-expanded to a combustion pressure and is supplied to the combustion chamber for combustion with the main portion CO2.

A system for reducing NO_x emissions, includes a reformer configured to receive a fuel and produce a hydrogen-enriched stream, a combustion system configured to burn the hydrogen enriched-stream and produce electricity and an exhaust stream, and a recuperator configured to recover heat from the exhaust stream, wherein the recovered heat is recycled back to the reformer.

The invention relates to a combined heat and power generation energy saving device using afterheat to supply heat and an energy saving method. The combined heat and power generation energy saving device comprises a steam boiler, a steam extraction condensed type steam turbine, an electric generator, a condenser, a deaerator and a cooling tower, wherein the steam extraction condensed type steam turbine is connected with the condenser by an exhaust steam cylinder, and the condenser is connected with the cooling tower to form large waterway circulation; the combined heat and power generation energy saving device also comprises a backpressure turbine, a compression heat pump and a heat exchanger, wherein a steam inlet of the backpressure turbine is connected with a steam extraction hole of the steam extraction condensed type steam turbine, an exhaust steam hole is connected with a steam inlet of the heat exchanger, the compression heat pump is drawn by the backpressure turbine and is connected with the backwater end of a hot-water pipe network, the condenser and the compression heat pump are connected with the cooling tower to form small waterway circulation, the water inlet end of the heat exchanger is connected with the water outlet end of the compression heat pump, the water outlet end is connected with the water inlet end of the hot-water pipe network, and the drainage end is connected with the deaerator. The invention is capable of reducing cold source loss, increasing comprehensive heat efficiency and electrothermal proportion and reducing unit electric-generation coal consumption.

The microturbine engine that is typically utilized to power an electrical generating system and/or boiler, chiller and the like includes a second boiler and a by-pass system for providing heated water at two different levels or where one of the boilers provides steam. The turbine exhaust is utilized as the heat transport medium and is directly connected to one of the boilers while the other is connected to the recuperator. The system can optionally provide cooling to the electrical and electronic components of the system by providing a water circuit for leading water into the electric and electronic components prior to feeding the boilers. The system is designed to assure that the delta heat difference between the medium being heated and the waste heat of the turbine is sufficient so that the heat exchange will be done efficiently.

An integrated fuel cell unit (10) includes an annular array (12) of fuel cell stacks (14), an annular cathode recuperator (20), an annular anode recuperator (22), a reformer (24), and an anode exhaust cooler (26), all integrated within a common housing structure (28).

The invention discloses a methanol water hydrogen-making machine and a hydrogen-making method thereof. The methanol water hydrogen-making machine comprises a methanol water storage container, a delivery pump, a heat exchanger, a reformer, a separation device and a fuel cell, wherein the delivery pump is used for delivering methanol and water inside the methanol water storage container to a reforming chamber of the reformer; the heat exchanger is used for carrying out heat exchange on the low-temperature methanol and water and a high-temperature mixed gas output from the reforming chamber; the reformer is provided with the reforming chamber and an electric heater, and the electric heater provides heat energy for the reforming chamber; and the high-temperature mixed gas which takes carbon dioxide and hydrogen as main parts is prepared in the reforming chamber, passes through the heat exchanger and then enters the separation device to be separated to obtain the hydrogen, and a part of the hydrogen enters the fuel cell and generates electrochemical reaction in the fuel cell to generate electric energy to provide electricity for the delivery pump and the electric heater. According to the methanol water hydrogen-making machine, the reformer has no need of being provided with a combustion chamber, an air inlet fan, an air inlet channel and a smoke window, the heating temperature inside the reformer is easily controlled and stable, and the reformer is simple in structure, stable in work and low in overhaul difficulty.

A gas turbine system includes a gas turbine (1, 2, 3) having a compressor (1) and a turbine (2), which via a common shaft (3) drive a generator (4), and a combustion chamber (6), the exit of which is connected to the entry to the turbine (2) of the gas turbine (1, 2, 3), has a fuel feed (8) and receives combustion air from the exit of the compressor (1) of the gas turbine (1, 2, 3) via the high-pressure side of a recuperator (5), the exit of the turbine (2) and the entry to the compressor (1) of the gas turbine (1, 2, 3) being connected via the low-pressure side of the recuperator (5), and a first exhaust-gas turbocharger (ATL2) which sucks in air being connected to different locations (9, 10) of the low-pressure side of the recuperator (4) via the exit of its compressor (13) and the entry to its turbine (14).

The invention discloses a process and equipment for converting carbon dioxide in flue gas into natural gas by using dump power energy. According to the process, water is electrolyzed by using the dump power energy to generate hydrogen gas; the hydrogen gas and carbon dioxide captured from industrial flue gas are enabled to generate methanation reaction; meanwhile, water is heated by using the heat generated by the methanation reaction to generate superheated water vapor for driving a steam turbogenerator to generate power which is used for supplementing power energy for electrolyzing water, and thus natural gas which can be conveniently stored or conveyed is obtained by synthesizing. The equipment is mainly formed by combining a transforming and rectifying device, an electrolytic bath, a steam turbogenerator, a carbon dioxide heater, at least two-stage of fixed bed reactors, various indirect heat exchangers, a steam drum, a natural gas condenser and a process water pipeline. According to the process and equipment disclosed by the invention, the defects that internet obstacles exist or power is excessive in a short time and difficult to store in a mode of generating power by using renewable energy sources are effectively overcome, the problem that the environment is polluted by room temperature gases in a mode of generating power by using fossil energy is effectively solved and the renewable energy sources and carbon dioxide waste gas can be reasonably utilized.