摘要:
A waste heat recovery system is provided. The waste heat recovery system includes a Rankine cycle system for circulating a working fluid. The Rankine cycle system includes at least one first waste heat recovery boiler configured to transfer heat from a heat source to the working fluid. The Rankine cycle system also includes a first expander configured to receive the heated working fluid from the at least one first waste heat recovery boiler. Further, the Rankine cycle system includes a second expander and a third expander coupled to at least one electric generator. The waste heat recovery system also includes a condenser configured to receive the working fluid at low pressure from the first expander, the second expander and the third expander for cooling and a pump connected to the condenser for receiving a cooled and condensed flow of the working fluid from the condenser.
摘要:
Systems and methods include heat exchangers using Organic Rankine Cycle (ORC) fluids in power generation systems. A system for power generation using an ORC comprises: a heat exchanger configured to be mounted entirely inside a duct, the heat exchanger comprising a single inlet which traverses from an outer side of the duct to an inner side of the duct, a single outlet which traverses from the inner side of the duct to the outer side of the duct, and a conduit connecting the single inlet to the single outlet, the conduit being provided entirely inside the duct.
摘要:
Various methods and systems are provided for an engine. In one example, the system includes a two-stage turbocharger which has first turbocharger with a first turbine and a first compressor and a second turbocharger with a second turbine and a second compressor, where the first turbine and the second turbine are arranged in parallel and the first compressor and the second compressor are arranged in series. The system may include a duct coupling turbine inlets of the first and second turbine, and a valve coupled between the duct and the inlet of the first turbine to throttle flow to first turbine.
摘要:
An expansion system is presented. One embodiment of the expansion system that includes a pump configured to pressurize a condensed working fluid received from a condenser. The expansion system further includes a heat exchanger coupled to the pump and configured to vaporize the condensed working fluid received from the pump. The expansion system also includes an expander coupled to the heat exchanger and configured to expand the vaporized working fluid flowing from an inlet side of the expander to an outlet side of the expander. In addition, the expansion system includes a generator coupled to the expander and configured to generate energy in response to the expansion of the vaporized working fluid. Further, the expansion system includes an integrated cooling unit configured to convey at least a portion of the condensed working fluid from an inlet side of the generator to an outlet side of the generator to dissipate heat generated by the generator.
摘要:
A power generation system is provided. The system comprises a first Rankine cycle-first working fluid circulation loop comprising a heater, an expander, a heat exchanger, a recuperator, a condenser, a pump, and a first working fluid; integrated with a) a second Rankine cycle-second working fluid circulation loop comprising a heater, an expander, a condenser, a pump, and a second working fluid comprising an organic fluid; and b) an absorption chiller cycle comprising a third working fluid circulation loop comprising an evaporator, an absorber, a pump, a desorber, a condenser, and a third working fluid comprising a refrigerant. In one embodiment, the first working fluid comprises CO2. In one embodiment, the first working fluid comprises helium, air, or nitrogen.
摘要:
A hybrid power generation system includes a gas turbine engine system and a supercritical rankine cycle system. The gas turbine engine system includes a first compressor, an intercooler, and a second compressor. A first compressor is configured to compress an inlet airflow to produce a first outlet airflow at a first pressure. An intercooler is coupled to the first compressor and configured to cool the first outlet airflow exiting the first compressor to produce a second outlet airflow. A second compressor is coupled to the intercooler and configured to compress the second outlet airflow exiting the intercooler to produce a third outlet airflow at a second pressure. The supercritical rankine cycle system is coupled to the gas turbine engine system. The supercritical rankine cycle system is coupled to the intercooler to circulate a working fluid in heat exchange relationship with the first outlet airflow to heat the working fluid at a supercritical pressure from a first temperature to a second temperature above a critical temperature of the working fluid and to cool the first outlet airflow exiting the first compressor.
摘要:
Exhaust gas recirculation (EGR) systems and methods are provided. In one embodiment, a method for controlling an engine includes providing a first EGR gas flow to an intake manifold of the engine by closing a first EGR valve or a second EGR valve and at least partially opening the other of the first EGR valve and the second EGR valve, wherein the first and second EGR valves are respectively positioned in first and second EGR passages respectively coupled between first and second donor cylinder groups and an intake manifold, and providing a second EGR gas flow that is higher than the first EGR gas flow to the intake manifold by fully opening the first EGR valve or the second EGR valve and at least partially opening the other of the first EGR valve and the second EGR valve.
摘要:
A heat exchanging system is provided. The heat exchanging system includes multiple plates wound spirally around a reaction chamber. The multiple plates also form multiple channels that operate as a counter flow recuperator terminating within the reaction chamber.
摘要:
A method, system, and apparatus including a compressed air energy storage system that includes an ambient air intake configured to intake a quantity of ambient air for storage in a compressed air storage volume, a compression system having a compression path that is configured to convey air compressed by the compression system through the compression system, a first path configured to convey ambient air to the compression system, a second path proceeding from the compression system to the compressed air storage volume and configured to convey compressed air to the compressed air storage volume, and a dehumidifying system. The dehumidifying system is coupleable to at least one of the first path that proceeds from the ambient air intake to the compression system, the compression path, and the second path. The dehumidifying system includes a dehumidifying component configured to remove moisture from the ambient air and/or the compressed air.
摘要:
A steam cycle power plant includes a gas turbine, a gas turbine intercooler, a steam turbine, and a heat recovery steam generator (HRSG). The gas turbine intercooler recovers unused heat generated via the gas turbine and transfers substantially all of the recovered heat for generating extra steam for driving the steam turbine.