6 results about "Kalina cycle" patented technology

The invention provides a light energy-electric energy-chemical energy coupling coal-fired unit system and an operation system. The system comprises a coal-fired power generation subsystem, a photovoltaic-thermochemistry subsystem and a Kalina circulation subsystem. The coal-fired power generation subsystem is connected with the photovoltaic-thermochemistry subsystem, and the photovoltaic-thermochemistry subsystem is connected with the Kalina circulation subsystem; the coal-fired power generation subsystem is used for basic power generation and peak regulation of the whole system; the photovoltaic-thermochemistry subsystem is used for converting solar energy into electric energy through a photovoltaic device and driving a reversible thermochemistry device based on a calcium-based compound by using the electric energy, so that conversion and storage of electric energy-heat energy-chemical energy are realized; the Kalina circulation subsystem is used for waste heat utilization of thermal chemical reaction products. The heat storage / release temperature is matched with the coal-fired system through thermochemical reaction pressure regulation and control, dynamic regulation of the Kalina cycle working medium concentration is combined, the irreversible loss of heat transfer is remarkably reduced, and the comprehensive energy utilization efficiency is improved.

The invention discloses an absorption type combined cooling heating and power system based on a hydrogen fuel cell, the combined supply system comprises a hydrogen fuel cell unit, an organic Rankine cycle subsystem, a Kalina cycle subsystem and a lithium bromide absorption type refrigeration subsystem, the combined supply system utilizes the hydrogen fuel cell unit to carry out electrochemical reaction to generate electric energy, meanwhile, tail gas waste heat generated by the hydrogen fuel cell unit is used as driving force to drive the subsystems to perform power generation, heating or refrigeration functions; an intermediate heat exchanger is further arranged in each subsystem and used for improving the heat efficiency of each subsystem. According to the system, high-concentration hydrogen is provided for the anode of the hydrogen fuel cell through methane reforming hydrogen production, the output of the hydrogen fuel cell is improved, waste heat of the hydrogen fuel cell system is used for supplying power and heat to a user, meanwhile, the refrigeration effect needed by the user is provided, and the comprehensive utilization efficiency of energy is improved.

The invention discloses an ammonia-hydrogen coupled distributed comprehensive energy supply system and method. According to the invention, the flue gas waste heat of a hydrogen ammonia gas turbine and a high-temperature direct ammonia solid oxide fuel cell (DA-SOFC) is recycled in a gradient manner, and the flue gas hot water type lithium bromide unit, the organic Rankine cycle, the four-step copper chloride cycle, the Kalina cycle and the like are sequentially adopted for carrying out gradient utilization on the waste heat with different temperature grades; the whole utilization process relates to full-chain waste heat recovery from high temperature to medium and low temperature, so that the energy utilization efficiency is greatly improved compared with that of a traditional system; meanwhile, by means of the recovery system, cold, heat, electricity and hydrogen multi-energy combined supply is achieved, and the energy self-sufficiency rate of the user side is remarkably increased. In addition, ammonia hydrogen energy serves as the core, no fossil energy is involved in the whole chain, and the whole system can achieve near-zero emission of carbon.

The invention provides a system utilizing liquefied natural gas cold energy and gas turbine waste heat and an operation method, in the system, a gas turbine heat regenerator is connected with a Kalina cycle heater, and the Kalina cycle heater is connected with a first organic Rankine cycle heater; high-temperature fuel gas subjected to heat exchange in a heat regenerator of the gas turbine sequentially enters a Kalina cycle heater and a first organic Rankine cycle heater to provide heat for bottom cycle; the organic Rankine cycle condenser is connected with the Kalina cycle condenser, and liquefied natural gas sequentially enters the organic Rankine cycle condenser and the Kalina cycle condenser to condense corresponding working media. The system can efficiently and reasonably utilize exhaust waste heat energy of the regenerative gas turbine and cold energy in the gasification process of the liquefied natural gas, waste heat recovery is achieved through stepped utilization, the energy utilization rate is increased, and waste of exhaust heat of the gas turbine and the cold energy of the liquefied natural gas is reduced.

The application discloses a kind of based on kalina cycle's work heat exchange network optimization method, belong to work heat exchange network technical field, including S1 obtain process stream parameter, the property parameter of kalina cycle and other economic data;S2 by comparing the import and export temperature and import and export pressure of stream, the stream is classified;S3 the heat capacity flow rate and enthalpy of each stream are calculated;S4 construct work heat exchange network and the mixed integer nonlinear programming model (including objective function and constraint condition) of kalina (kalina) cycle coupling;S5 with annual total cost TAC minimization as objective function, utilize solver to solve model, obtain optimal work heat exchange network structure and operating parameter.The application adopts above-mentioned one kind based on kalina cycle's work heat exchange network optimization method, can determine optimal heat integration scheme, work exchange configuration and power generation scheduling strategy, realize multi-energy collaborative optimization, to significantly improve the economy and energy efficiency of system.

The present application belongs to the technical field of ocean energy utilization, and particularly relates to a marine temperature difference energy cogeneration system and method capable of adjusting medium concentration. The present application combines ammonia-water Kalina cycle power generation technology and heat pump heating technology, sets up a heat and power cogeneration system with an ammonia-water Kalina cycle power generation unit, a concentration adjusting unit and a heat pump heating unit, absorbs surface seawater heat by the ammonia-water Kalina cycle power generation unit to generate power, and supplies heat by the ammonia-water heat pump cycle. According to the characteristics that the high-temperature surface seawater temperature fluctuates greatly with climate time, the valve opening and closing state of the system is adjusted according to the change of the high-temperature surface seawater temperature, the ammonia gas medium is controlled to enter or lead out of the Kalina power generation unit to change the medium concentration of the Kalina cycle power generation unit, the efficient and reasonable utilization of marine temperature difference energy is realized, the energy comprehensive utilization efficiency of the marine temperature difference energy system is improved, and the carbon emission and the influence on the environment are reduced.