37results about How to "Meet heat load demands" patented technology

The invention relates to an adjustable distribution air flue for a rail transit air conditioner and a control method of the adjustable distribution air flue. The adjustable distribution air flue comprises a distribution air flue body. An air inlet of the distribution air flue body is connected with an air conditioner unit. The two ends of the of the distribution air flue body are provided with a first air outlet and a second air outlet correspondingly. The adjustable distribution air flue has the characteristics that an air regulation structure used for regulating the air outlet volume of the first air outlet and the second air outlet is installed in the distribution air flue body; the air regulation structure comprises a first flow guide plate and a second flow guide plate which guide outlet air to be discharged through the first air outlet and the second air outlet correspondingly; the upper end of the first flow guide plate is connected with the upper end of the second flow guide plate; the lower end of the first flow guide plate is connected with the lower end of the second flow guide plate through a connection plate; a tooth-shaped guide rail is fixed to the connection plate of the air regulation structure; a servo motor is installed on the outer side of the distribution air flue body; a power output shaft of the servo motor is connected with a gear; and the gear meshes with the tooth-shaped guide rail. According to the adjustable distribution air flue for the rail transit air conditioner and the control method of the adjustable distribution air flue, air distribution in a carriage can be optimized, and the noise level in the air flue can also be lowered effectively.

The invention discloses a central heating system on-demand precise regulation and control method based on models. The method comprises the following steps that S1, a heating station load predicting model is built according to the historical operation data of a heating station and weather data; S2, the next-day short-term heat load of the heating station is predicted under the given weather condition; S3, needed secondary side heat supply and flow are determined according to the needed heat load; S4, a plate exchange model of a heating station heat exchanger is built; S5, the needed primary side valve opening degree is calculated through the plate exchange model according to the needed heat load and secondary side heat supply temperature, and related control operation is executed accordingly; S6, a data driving model of the relation among the room temperature, return water temperature and weather parameters of all buildings is built; and S7, the set value of the return water temperatureof all building openings is calculated according to the models, so that adjusting valves of the building openings track the value. According to the method, the situation of excessive supply of the heating station can be effectively avoided, heat energy loss can be reduced, and the utilization efficiency of the heating station on energy is improved.

The invention relates to a data-driven accurate regulation and control method for an urban central heating system. The method comprises the following steps of Step 1, establishing a heat load demand index of each building and a corresponding prediction model; Step 2, according to the prediction model, calculating a heat load of each building reaching a target room temperature under a certain weather condition and the corresponding relationship of the building entrance flow and secondary temperature supply combination; Step 3, calculating a secondary temperature supply and flow distribution scheme enabling each building to reach the target room temperature under the constraint condition that the total flow of the secondary side is certain; Step 4, adjusting the building entrance flow of each building according to the flow distribution scheme; Step 5, establishing a plate exchange model for the operation of a heating station; and Step 6, calculating the opening degree of a primary side valve through the plate exchange model, and executing the control operation according to the opening degree of the primary side valve. The method provided by the invention has the advantages that a common electric control valve is arranged at the entrance of the building of the secondary side, the opening degree of the valve is calculated by a control system, and an electric signal is sent to the electric control valve, so that the control cost at each building is reduced.

The invention discloses an ultralow circumstance temperature solar energy-air source heat pump unit externally connected with a sustainable heat source. The ultralow circumstance temperature solar energy-air source heat pump unit comprises a quasi-double-stage (double-stage) compressor, a four-way reversing valve, an indoor heat exchanger, a main road economizer, a main road electronic expansion valve, an outdoor heat exchanger, a gas-liquid separator, a side road electronic expansion valve, a water cooling evaporator, a low-temperature solar heat collector, a water pump, a first one-way valve, a capillary pipe, a second one-way valve, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, a sixth solenoid valve, a seventhsolenoid valve, a main loop (heating/cooling operation), a defrosting loop, a gas makeup loop and a sustainable heat source loop. On the one hand, under the gas makeup conditions, the ultralow circumstance temperature solar energy-air source heat pump unit can heat refrigerating fluid in the gas makeup loop through hot water produced by the solar heat collector to gasify the refrigerating fluid; and on the other hand, under the defrosting conditions, the four-way reversing valve of the unit does not conduct reversing, and the unit conducts defrosting through hot water generated by solar energyduring indoor continuous heat supply.

A heat collection and storage wall and air-water heat collector combined heating system comprises a heat collection and storage wall. The heat collection and storage wall is arranged on the outer sideface of a house. Air in the heat collection and storage wall is connected with an air inlet of an air-water heat collector through an air inlet pipeline under the effect of a draught fan. The air-water heat collector comprises a water outlet. The water outlet is connected with a coil pipe of a phase change heat storage floor through a water outlet pipeline, wherein the phase change heat storage floor is arranged on a bottom plate. The water outlet pipeline is provided with a first electric three-way joint. The first electric three-way joint is connected with a domestic hot water device through a pipeline. Temperature sensors used for sensing temperature are arranged in rooms. The air-water heat collector is connected with the first electric three-way joint. The heat collection and storagewall and air-water heat collector combined heating system can store heat and has all-day heating capacity, temperature differences between the south rooms and the north rooms are eliminated, and by means of the heat collection and storage wall and air-water heat collector combined heating system, the heat collector is protected against super-cooling and overheating.

The invention provides an air conditioning control method and device, a storage medium and an air conditioner. The method includes acquiring a current setting control mode of the air conditioner afterthe air conditioner is powered on, wherein the setting control mode is determined in at least two preset control modes corresponding to different cooling and/or heating capabilities; controlling theair conditioner to operate according to the current setting control mode of the air conditioner. The requirements of the air conditioner in different cold and heat interval sections can be met, and the choice of different environmental modes is provided for users. The adaptability of the air conditioner is improved, and the air conditioner can be installed in different areas of rooms without affecting the comfort.

The invention discloses a biomass pyrolysis and gasification incinerator with a differential rotating bed, and mainly relates to the technical field of energy science. The incinerator comprises a boiler barrel and a boiler body with an opening in the top, wherein a radiation heat exchanger covering the top end of the boiler body is arranged at the top of the boiler body, the boiler barrel is installed at the top of the radiation heat exchanger, a first flue communicating with the boiler body is arranged in the radiation heat exchanger, a convection heat exchanger is arranged on one side of theradiation heat exchanger, a second flue communicating with the first flue is arranged in the convection heat exchanger, an exhaust pipe communicating with the second flue is arranged at the end, awayfrom the radiation heat exchanger, of the convection heat exchanger, and a tower-shaped rotary air distribution disc and an air distribution disc driving device are arranged at the bottom in the furnace body. According to the incinerator, disturbing between a fire grate and a material layer can be increased, meanwhile, through proper air distribution, materials can be fully gasified, the heat exchange efficiency and the energy conversion efficiency can be improved, the service life is prolonged, the gasification strength is improved, the heat energy utilization rate can be increased, and theheat load requirements of users can be met.

The embodiment of the invention relates to the technical field of ship coolers, and provides a self-flowing outboard cooler and a ship cooling system. The self-flowing outboard cooler is provided witha to-be-cooled fluid inlet and a cooled fluid outlet and comprises a first heat exchange tube bundle and a second heat exchange tube bundle which are arranged in the two directions correspondingly, and the two ends of the first heat exchange tube bundle and the two ends of the second heat exchange tube bundle are connected with end sockets correspondingly. The end sockets at the two ends of the first heat exchange tube bundle communicate with a to-be-cooled fluid inlet and a cooled fluid outlet correspondingly, and end sockets at the two ends of the second heat exchange tube bundle communicate with an end socket at one end of the first heat exchange tube bundle and a cooled fluid outlet correspondingly. A first stop valve is arranged on a communicating pipeline of the end socket of the second heat exchange tube bundle and the end socket of the first heat exchange tube bundle. According to the self-flowing type outboard cooler and the ship cooling system provided by the embodiment of the invention, the heat exchange area of the heat exchange tube bundle and the cooling water is adjusted, and the heat load requirements under different working conditions are met under the condition that the flow of the valve or the rotating speed of the water pump is not changed.

The invention discloses a main steam heat supply system with a steam supplementing bypass. The system comprises a turbine unit and a steam heating unit, wherein a steam pipeline and a cold section pipeline are arranged between the turbine unit and the steam heating unit, the steam output end of the steam heating unit is connected with the steam input end of the turbine unit through the steam pipeline, the steam output end of the turbine unit is connected with the steam input end of the steam heating unit through the cold section pipeline, the steam pipeline comprises a main steam pipeline anda reheating steam pipeline, and a steam supplementing bypass unit is arranged between the main steam pipeline and the cold section pipeline. The main steam heat supply system with the steam supplementing bypass meets the thermal load demand of an industrial heat supply system of a thermal power plant, and the steam supply capacity of the industrial steam supply heat source of the existing thermalpower plant is improved.

The invention discloses a heat load adjusting system for combined heat and power generation of a gas turbine and a control method thereof. The system comprises a gas turbine electronic production system, an afterheat boiler, an energy storage subsystem and a heat user subsystem; when the user heat load is low, smoke from the gas turbine electronic production system flows through the energy storagesubsystem and exchanges heat with the energy storage subsystem to flow to the afterheat boiler; fed water is conveyed to the heat user subsystem after being heated as steam through the afterheat boiler; when the user heat load is high, the smoke from the gas turbine electronic production system flows to the afterheat boiler; the fed water is conveyed to the heat user subsystem after being heatedas the steam through the afterheat boiler and the energy storage subsystem; when the user heat load is balanced, the smoke from the gas turbine electronic production system flows to the afterheat boiler; the energy storage subsystem is closed; and the fed water is conveyed to the heat user subsystem after being heated as the steam through the afterheat boiler. Under the working condition of maintaining full-load operation of the gas turbine, the demands of terminal heat users are met.

The invention relates to a heat exchange station heat storage type electric boiler equipment control device and method, and the method comprises the steps: considering the constraint conditions of the capacity limitation of a heat storage tank of electric heat compensation equipment, the heat storage and release power, the power grid voltage, the cooperation of a primary heat supply network and a user heat load demand, and comparing a heat critical electricity price with a power grid peak-valley flat electricity price; the electric on-off of the heat storage type electric boiler and the heat on-off of the heat storage tank are controlled by taking economic benefits of heat storage type electric boiler equipment as a target, the operation characteristics of heat storage of the heat storage type electric boiler are brought into full play, the economic operation of the electric heat compensation equipment is improved, meanwhile, the peak, flat and valley electricity price signals of a power grid are responded, the peak and valley difference of the power grid is reduced to a certain extent, and the economic benefit of the power grid is improved. The control method not only meets the actual operation condition, but also meets the heating requirement, and has certain significance in large-scale popularization.

The invention provides a control method and device of a refrigerating device and the refrigerating device. The method includes the steps of controlling the hot load state of the refrigerating device,controlling the wet load state of the refrigerating device when the hot load state meets the hot load requirement, and controlling the environment temperature by controlling the target evaporation temperature and/or the rotating speed of a draught fan of the refrigerating device when the wet load state meets wet load requirements. Through the method, the problem that in a related technology, a refrigerating device cannot adapt to different climatic characteristics in different regions during refrigerating is solved, the air supply quality is improved, energy is saved, and comfort is improved.

The invention relates to a high-speed rail station comprehensive energy system scheduling method utilizing train regenerative braking energy, and belongs to the technical field of high-speed rail station comprehensive energy system electricity and heat combined scheduling. A cooling, heating and power integrated comprehensive energy system comprising train regenerative braking energy, photovoltaicpower generation equipment, a combined heat and power supply unit, a municipal power grid and the like is established, so that the utilization of the train regenerative braking energy is improved, and the consumption of photovoltaic power generation is promoted. The operation cost minimization, the energy consumption minimization and the carbon dioxide emission minimization are taken as main targets, and the operation constraint conditions of each unit and the cold, heat and electricity supply and demand balance constraint conditions of the system are combined. The high-speed rail station cold, heat and electricity integrated comprehensive energy system considering train regenerative braking energy feedback can be used as an implementation scheme of the high-speed rail station cold, heatand electricity integrated comprehensive energy system considering train regenerative braking energy feedback, train regenerative braking energy utilization and solar photovoltaic power generation consumption are promoted, the energy utilization efficiency is improved, and harm to the environment is reduced.

The invention adopts a dynamic thermal load control mode. A two-way electric valve and a variable-frequency circulating pump are mounted on high-low-region backwater; a temperature controller is used for acquiring an outdoor environment and an average temperature of supplied backwater to give out a valve location signal to control the two-way electric valve to realize closed-loop control on the average temperature; and a flow controller controls variable-flow operation of the variable-frequency circulating pump through a constant pressure difference mode, so that heat saving and power saving of the high-low-region direct connecting unit are realized. The invention solves the problems that the high-low-region direct connecting unit does not save heat and power in operation, and discloses a heat-saving power-saving control method for the high-low-region direct connecting unit.