31results about How to "Combined heat and power" patented technology

The invention provides a PVT heat pump system capable of achieving day and night time-division heat, power and cold supply through solar radiation and sky cold radiation, and a photovoltaic power generation technology and a PVT heat pump technology which are relatively independent and mutually promoted in function are used simultaneously. Solar radiation energy and sky long-wave cold radiation energy are used as main energy resources of the system, and the energy is converted into electric energy, heat energy and cooling capacity through a PVT photoelectric-evaporation/condensation assembly in different modes at different times. The system integrates the various functions of power generation, heating, cooling and the like, equipment composition is simple, the equipment utilization rate is high, the energy saving effect is remarkable, the energy utilization rate is increased to the greatest extent, and the effects of achieving multiple purposes through the system and achieving day and night time-division heat, power and cold supply are achieved.

The invention discloses a heat electricity combination supply device adopting gradient utilization of middle-low temperature waste heat. The device comprises a first class evaporator, an expansion machine, a condenser, a first storage tank, a working medium pump, a radiator, a second class evaporator, a compressor, a heat exchanger, a second storage tank and the like. According to the heat electricity combination supply method and the device adopting gradient utilization of the middle-low temperature waste heat, the middle-low temperature waste heat is divided into three classes for gradient utilization, the middle-low temperature waste heat is reduced to about 15 DEG C, the utilization temperature area of the middle-low temperature waste heat is enlarged, to greatly improve the utilization efficiency of the middle-low temperature waste heat, the utilization efficiency of the middle-low temperature waste heat is greatly improved, wherein the first class is Organic Rankine Cycle, the second class is heating radiators or underfloor heating, and the third class is electric heat pump cycle heat supplying; the middle-low temperature waste heat can be recovered, electricity generating and heat supplying are conducted at the same time, and heat electricity combination producing is achieved; and the electric heat pump is supplied power through the Organic Rankine Cycle, buying power from an electrical net is not needed, and the heat supplying cost is reduced.

The invention relates to a power plant fire coal steam extraction drying and waste heat using integrated system. A steam drying machine steam inlet is connected with a turbine steam extraction opening, a steam drying machine condensation water outlet is connected with a deaerator, raw coal firstly enters a steam drying machine, and a steam drying machine drying coal outlet is connected with a boiler fuel inlet; drying dead steam of a brown coal drying system is connected into a waste heat recovering system, and the waste heat recovering system comprises a first-stage dead steam cooling device,a second-stage dead steam cooling device and a third-stage dead steam cooling device; the first-stage dead steam cooling device, the second-stage dead steam cooling device and the third-stage dead steam cooling device are sequentially connected, stair waste heat for dead steam drying is used for gradually heating turbine regenerative system condensation water, heating boiler wind feeding air andsupplying heat an external heat supply network; and combined heat and power generation of brown coal is achieved, meanwhile, the boiler efficiency is improved, and the obvious energy saving and environment benefits are achieved.

Disclosed is a tower-type solar thermal power co-generation system. The tower-type solar thermal power co-generation system is composed of a condensation heat absorption system, a first-class heat accumulation system, a second-class heat accumulation system, a power generation system, a power generation auxiliary combustion system, a power generation water treatment system, a waste heat recovery system and a monitoring and auto-control system. A tower-type heat absorber of the condensation heat absorption system communicates with a turbine of the power generation system. The power generation auxiliary combustion system and the condensation heat absorption system are connected in parallel. An absorption heat pump is connected with the power generation water treatment system. The waste heat recovery system is connected with a heating pipe network. The monitoring and auto-control system controls pumps and valves to be opened and closed, so that the overall thermal auto-control is realized.

The invention discloses a heat pipe type solar energy thermophotovoltaic and optothermal integrated device. The device mainly comprises a heat pipe, a battery, a glass fiber, a quartz glass plate, a silicon carbide radiator, a vacuum interlayer quartz glass cover and a side face heat insulation plate. Sunlight enters a cavity of the silicon carbide radiator from an opening of the quartz glass plate after being condensed, the silicon carbide radiator converts the sunlight into heat energy which is radiated around, radiation energy penetrates through the vacuum interlayer quartz glass cover to reach the glass fiber, the glass fiber transfers radiation energy conforming to the energy gap of the battery to the battery, radiation energy not conforming to the energy gap of the battery is returned to the silicon carbide radiator, the battery converts the radiation energy into electric energy, some residual radiation energy is not absorbed or converted by the battery into heat energy, the heat energy reaches the evaporation section of the heat pipe, a working medium in the heat pipe is evaporated to reach the condensation section, a cooling water collection box transfers the heat energy inside the heat pipe into cooling water, and combined heat and power generation is achieved.

The invention provides a photo-thermal power generation high-temperature solid heat storage system which comprises a heat fetching subsystem, a heat storage subsystem and a heat consumption subsystem.According to the system, solar light is focused on a tower solar heat collector through a multi-surface heliostat, circulating air and a high-temperature heat absorbing plate in the heat collector are subjected to radial convective heating to obtain high temperature, one path of the high-temperature air enters a high-temperature solid heat accumulator so that the heat accumulation temperature canbe as high as 900 DEG C, the other path of the high-temperature air can directly enter air heat users or enter a steam boiler to generate overheat steam, and the overheat steam enters a turbine set to act and generate power and then is supplied to low-pressure steam heat users so that combined heat and power generation can be achieved. The system can continuously, stably, safely and reliably provide a high-temperature heat source, can achieve all-weather running by adoption of the heat subsystems, and can meet the different requirements of the heat users, the energy utilization efficiency isgreatly improved, the using amount of conventional energy is reduced, environment pollution is effectively reduced, and the economic and social benefits are good.

The invention relates to a smoke multistage drying brown coal power generation system. Brown coal passes through a smoke multistage drying system to be fed into a boiler, and the smoke multistage drying system comprises a first-stage drying machine and a second-stage drying machine which are connected in series in sequence; a desulfurizing tower smoke outlet is connected with a smoke inlet of thesmoke cooler through a smoke pipe, the first-stage drying machine is connected with the smoke cooler to form a closed type heat circulation loop, and low-temperature smoke waste heat is used for conducting first-stage drying on the brown coal; a second-stage drying machine smoke inlet is connected with a boiler smoke extraction opening, part of boiler high temperature smoke is extracted for conducting deep drying on the brown coal; and the brown coal is subject to the pre-drying in the coal-fired power generation process, and the brown coal power generation efficiency is greatly improved.

The invention discloses a multi-energy complementation power generation device capable of improving quality of medium-low temperature geothermal water and a method thereof. The device comprises a geothermal well and a heater connected with a geothermal water outlet of the geothermal well, wherein a water steam outlet of the heater is connected with the inlet of a primary flash evaporator; a heat transfer working medium outlet of a solar heat collector is connected with a heat transfer working medium inlet of a superheater; a heat transfer working medium outlet of the superheater is connected with a heat transfer working medium inlet of the solar heat collector; a water steam outlet of the primary flash evaporator is connected with the inlet of a steam turbine; the outlet of the steam turbine is connected with the inlet of a condenser; the outlet of the condenser is connected with the inlet of a recharging well; a water outlet of the primary flash evaporator is connected with the inletof a secondary flash evaporator; a water steam outlet of the secondary flash evaporator is connected with a steam supplementing opening of the steam turbine; a water outlet of the secondary flash evaporator is connected with the inlet of a heat exchanger; the outlet of the heat exchanger is connected with the inlet of the recharging well; and the heat exchanger is used for supplying heat to the outside. The invention also discloses a power generation method of the device. Through the multi-energy complementation power generation device capable of improving quality of medium-low temperature geothermal water and the method thereof, the coproduction of heat and power is achieved by geothermal energy; the temperature of the geothermal tail water is reduced; the comprehensive energy utilizationefficiency of the geothermal energy is improved.

The invention discloses a combined heat and power generation method and device of a solid oxide fuel cell and a process heating furnace. A fuel and combustion air firstly enter a synthesis gas generator for generating a high-temperature synthesis gas required for power generation of the fuel cell. The generated high-temperature synthesis gas exchanges heat with the air required for an electrochemical reaction of the fuel cell through a heat exchanger, so that the temperature of the synthesis gas and the temperature of the air in galvanic piles both meet the requirements of the power generationof the fuel cell. After the heat exchange, the synthesis gas and the air in the galvanic piles are divided into multiple branches, and each branch leads to the entrance of each galvanic pile to perform the power generation of the fuel cell. Exhausted synthesis gas and exhausted air that have completed the power generation reaction are merged respectively and enter the process heating furnace forcombustion and heat exchange, so as to make full use of the remaining chemical energy and waste heat in the exhausted synthesis gas and the exhausted air. By adopting the combined heat and power generation method and device disclosed by the invention, while the high-level energy in the fuel gas is fully utilized, the waste heat is recovered by the process heating furnace, so that the constructioninvestment of the same project can be greatly reduced, and the economic value of the fuel is greatly improved.

The invention discloses a cogeneration type solar device. The cogeneration type solar device comprises a bracket, a water collecting tank, a heat collector, a micro steam turbine generating unit, an expansion tank and an energy storage element, wherein the water collecting tank is fixed to the bracket, the heat collector is connected with the water collecting tank by virtue of a water inlet pipe and a water return pipe, a water inlet is formed in the water collecting tank, the expansion tank is arranged on the upper end of the water collecting tank, the expansion tank is connected to the water collecting tank by virtue of a pipeline, a backflow pipe is arranged at the bottom of the expansion tank, the top of the expansion tank is connected with the micro steam turbine generating unit by virtue of a pipeline, the micro steam turbine generating unit is electrically connected with the energy storage element, the micro steam turbine generating unit comprises a micro steam turbine and a microgenerator, a water return pipeline is installed on the micro steam turbine, a circulating pump is arranged on the water return pipeline, and the water collecting tank is connected to the other end of the water return pipeline. By adopting the device, heat is supplied to a user, and the heat can be converted into electric energy, so that cogeneration is realized.

The invention discloses a back pressure type ORC combined heat and power generation system. The back pressure type ORC combined heat and power generation system comprises a turbine expander, wherein an inlet of the turbine expander is connected with an evaporator; an outlet of the turbine expander is connected with a power generator and a plate heat exchanger; and one end of the plate heat exchanger communicates with a heating system, and the other end of the plate heat exchanger is connected with the evaporator through a working medium pump. According to the back pressure type ORC combined heat and power generation system, the turbine expander is a back pressure type turbine expander, a condenser in a traditional ORC power generation device is omitted, the plate heat exchanger is additionally arranged to heat the heating system for water return, heat losses of a cold source are greatly reduced, and combined heat and power generation is achieved; and meanwhile, no industrial cooling system exists, cooling water consumption, pump and draught fan power consumption and cold source losses are avoided, and the system circulation heat efficiency is greatly improved.

The invention relates to solar energy focusing utilization, in particular to a fixed dot array solar heat pipe utilizing system which is used for realizing solar energy collection by solar mirrors adopting dot focusing The system comprises at least one solar mirror or one group of solar mirrors adopting dot focusing, at least one heat pipe utilizing device and a tracking control device, wherein the solar mirrors are arranged on a solar mirror bracket, the heat pipe utilizing device is arranged in a dotted region focused by the solar mirrors and arranged above or below the solar mirrors, and the focus lengths of the solar mirrors vary in the solar tracking process and are always kept in the dotted regions of the heat pipe utilizing devices; and the sunlight is focused by the solar mirrors to at least one heat pipe utilizing device under the control of the tracking control device when the sunlight varies, the heat pipe utilizing devices do not move with the solar mirrors in the solar tracking process of the solar mirrors, the heat pipe utilizing devices are kept static relative to the ground, and the tracking and focusing utilization of solar energy is realized.