72 results about "Ice storage air conditioning" patented technology

The invention discloses a comprehensive energy system economic optimization scheduling method based on a micro-grid. The method comprises the steps that independent modeling is performed according toenergy production equipment, energy conversion equipment and energy storage equipment in a factory, and an energy supply structure for a comprehensive energy system based on an energy exchange networkis set up; considering a serial working mode and a parallel working mode of an ice storage air-conditioning system, a comprehensive energy system economic optimization scheduling model is further improved, so that the optimization model better meets the practical demand of a project; and optimization scheduling is performed on the micro-grid considering cold and hot electric balance constraint, equipment operation constraint and energy storage equipment constraint with minimum annual operation cost composed of operation and maintenance cost, electricity purchasing cost, fuel cost and stored energy depreciation cost being an optimization objective, and automatic optimization of the factory is realized. The method has the advantages that energy using efficiency at the user side is improved,energy using cost of a user is reduced, economic benefit and the energy utilization rate are increased, and the method is suitable for different types of industrial park comprehensive energy systems.

A multi-mode combined cooling, heating and power micro-grid system considering ice storage air conditioning is composed of a distributed power generation system composed of photovoltaic power generation, wind power generation, a fuel cell, a micro gas turbine and ice storage air conditioning, primary system composed of an energy storage system and other co-supply equipment, and a secondary dispatching control system. A CCHP-MG multi-time-scale optimal scheduling method is proposed, in a day-ahead plan, the uncertainty of renewable energy is described through multiple scenes, economic operationof CCHP-MG in a running optimization period is focused on; Intra-day scheduling is based on the scheme of the day-ahead plan, the difference and correlation of cooling, heating and power on scheduling time scale are considered, a two-layer rolling optimal scheduling scheme is proposed, the upper layer dispatches the combined cold and heat supply equipment, the lower layer adjusts power equipment,taking minimization of the adjustment cost as the goal, the smooth output of each co-supply equipment is obtained. The invention can remarkably improve the comprehensive utilization efficiency of energy and the local absorption capacity of the distributed renewable energy, and realize the economic and safe operation of the multi-energy micro-network.

The invention discloses a cascaded ice-storage air conditioning system and a method utilizing same to supply cold air for an air conditioner. The cascaded ice-storage air conditioning system comprises a centrifugal cooling water system, a dual-mode unit system and an ice cold-storage system, wherein the centrifugal cooling water system comprises a centrifugal cooling water circuit and a centrifugal refrigerant circuit; the dual-mode unit system comprises a dual-mode cooling water circuit and a dual-mode refrigerant circuit; the ice cold-storage system comprises a refrigerant circuit; a first evaporator and a second plate-type heat exchanger form an independently connected circular cooling water circuit along with a frozen water pump, a water segregator, end equipment and a water collector respectively; the centrifugal cooling water system is connected with the dual-mode unit system by a first plate-type heat exchanger; the first plate-type heat exchanger is connected with the cooling water pump and the first evaporator so as to form an ice-making frozen water circuit; the first plate-type heat exchanger and a second cooling water pump and a second condenser form the ice-making frozen water circuit, and the end equipment is connected with the air conditioner that needs to be supplied with cold air. The cascaded ice cold-storage air conditioning system has high efficiency, can supply cold air reliably, can prepare and store ices effectively at low valley, and can save energy and charges.

The invention provides an internal-melt ice storage air-conditioning system and an operating method of the internal-melt ice storage air-conditioning system. The internal-melt ice storage air-conditioning system comprises a cooling tower, a single-working-condition ice-making refrigerating machine, an ice storage tank, a heat exchanger, a refrigerating unit, end equipment, a valve and corresponding circulating pumps. The single-working-condition ice-making refrigerating machine replaces a low-efficiency double-working-condition refrigerating machine in an existing ice storage air-conditioning system and only takes charge of ice-making cold storage at the electricity valley period at night, and the high-efficiency refrigerating unit and the ice storage tank cooperatively undertake daytime loads, so that the operating efficiency of a daytime cold supply system is improved, the distribution power of a refrigerating system is decreased, and the operating cost of the cold supply system is lowered. In addition, the internal-melt ice storage air-conditioning system has five operating modes, control is easier and more reliable, and greater economic benefits and social benefits are achieved.

The utility model relates to a cold storage air conditioning system combining external ice melting and water cold storage, which relates to the technical field of air conditioning. The brine circuit of the present invention includes a dual-working-condition refrigerator, an ethylene glycol pump P1, a cold storage coil and an electric valve V2 connected in sequence. The connecting pipeline of the glycol pump P1 and the cold storage coil is connected with the water outlet of the cold source side of the glycol plate heat exchanger, and the connecting pipeline of the dual-working condition refrigerator and the electric valve V2 is connected with the glycol plate heat exchanger The water inlet on the cold source side is connected. The cooling circuit of the present invention includes a cold water plate heat exchanger, an upper section water distributor and a lower section water distributor. The water outlet on the cold source side of the cold water plate heat exchanger is connected to the water distributor on the upper section, and the water distributor on the lower section is connected to the water inlet on the cold source side of the cold water plate heat exchanger. The other side of the glycol plate heat exchanger and the cold water plate heat exchanger are respectively connected to the water inlet and outlet of the user side. The invention can not only meet the requirements of the low-temperature air supply system, but also solve the problem of incomplete ice melting, enhance the cascaded utilization of cooling capacity, and further reduce the operating cost.

The invention discloses a design optimization method for an ice storage air-conditioning system based on a full life circle. The design optimization method comprises the following steps that an operation model of the ice storage air-conditioning system is established according to the characteristics of the ice storage air-conditioning system; the hourly loads of the ice storage air-conditioning system, obtained through TRNSYS simulation, in the operation periods in a typical meteorological year are taken as a basis; the design capacity and the cooling capacity per hour of a refrigeration host and an ice storage device are set; the annual operating cost of the ice storage air-conditioning system is represented; an objective function for representing the lowest full life circle cost of the ice storage air-conditioning system is established by combination with the initial cost of an ice storage air-conditioning device; and the model is solved by using an improved particle swarm optimization algorithm, so that the design capacity of a refrigerating unit and the ice storage device through which the full life cycle cost of the ice storage air-conditioning system is lowest is obtained, and can save the system costs for users.

The invention relates to a serialized direct evaporation type ice-water cold accumulation double-cold-source air conditioning system which is used for refrigerating by a high temperature type water-cooled compression condensing unit by utilizing low-price electric power in the electricity trough period at night; the high-pressure refrigerant liquid is directly sent into an evaporator after being throttled for evaporative refrigeration by applying the 'throttling refrigeration effect' principle of 'Joule-Thomson' law, so that apparent heat and latent heat of water in an ice storage tank are absorbed, and the aims of ice making and cold accumulation are achieved. The system comprises a double-temperature ice storage system, a temperature and humidity separately-control air conditioning terminal system, a PLC (programmable logic controller) intelligent control system, etc. A new concept that partial load ice-making cold accumulation is replaced by full load ice storage is applied; three technical innovation measures including adopting a 8-18 DEG C high-temperature difference water supply mode, adopting a temperature and humidity double-control air conditioner running mode and taking the high temperature type water-cooled compression condensing unit as an ice storage cold source mode are adopted, wherein the refrigerating capacity of the high temperature type water-cooled compression condensing unit is higher than the rated refrigerating capacity by 25-30%. The cold storage capacity of the double-cold source ice storage tank is increased by more than 24-51% compared with that of the existing ice storage air conditioning system. In the daytime, the system can provide 8-14 hours of hot and wet load for an air conditioning system, thus reducing operating cost by more than 85%; the system can be widely applied to or used for replacing various air conditioning systems, and is a radical innovation and technical revolution of the ice storage air conditioning system worldwide.

The invention provides an ice storage air-conditioning system and a method for optimizing a control method of the ice storage air-conditioning system. The ice storage air-conditioning system comprises a refrigeration water system, a chilled water system and a main medium water system. The refrigeration water system comprises a water collector, a water distributor, a refrigeration water pipeline, a system circulating pump, a base carrier circulating pump, a first valve, a second valve and a third valve. The refrigeration water pipeline comprises a main pipeline, a first branched pipeline, a second branched pipeline, a third branched pipeline, a fourth branched pipeline, a fifth branched pipeline and a sixth branched pipeline. The chilled water system comprises the main medium water system, a ground medium water system and an ice medium water system. The main medium water system comprises a cooling tower, a cooling water pump, a double-mode main chiller, a three-mode main chiller, a main chiller solution pump, a main chiller heat exchanger, a fourth valve, a fifth valve, a sixth valve, a seventh valve and an eighth valve. By means of the ice storage air-conditioning system, the problem that the refrigeration demands of people at all periods of time every day cannot be met due to the fact that the double-mode main chiller, the three-mode main chiller and an ice storage groove are purely connected in parallel is solved.

The invention relates to a dynamic ice storage ice-melting system capable of watering at a constant low temperature, belonging to the technical field of an ice storage air-conditioning system. The system comprises an ice storage tank, a sprinkler, a filter unit, an ice-melting water pump, an end coil, a proportioning valve, a control circuit and a temperature sensor, wherein a first connecting tube is arranged between the outlet of the ice-melting water pump and the inlet of the end coil, the temperature sensor is arranged inside the first connecting tube, the inlet of the proportion control valve is communicated with the first connecting tube, and the outlet of the proportioning valve is communicated with a second connecting tube. In the invention, a bypass regulation branch is added in an ice-melting circulation flow path so as to realize separate control for an ice-melting flow and a cooling flow, thereby ensuring low temperature watering and stable operation of the ice storage system, normal operation of the air-conditioning system, and high stability of cooling performance.

The invention provides cooling load prediction control method and device, applied to a dynamic ice storage air conditioning control system. The cooling load prediction control method comprises the following steps: dividing one day into a plurality of first preset time segments, dividing each first preset time segment into a plurality of second preset time segments, and collecting and calculating a water flow rate and a temperature difference between supply water and return water in a freezing water pipeline in each second preset time segment; calculating an actual cooling load value in each second preset time segment according to the water flow rate and the temperature difference between supply water and return water in the corresponding second preset time segment; and solving an average of the actual cooling load values with a preset number as a predicted cooling load value in the following second preset time segment. With the design, the demand for cooling capacity in a next day can be more accurately predicted, and control is optimized.

The invention discloses a micro-grid two-layer optimized dispatching method and a micro-grid two-layer optimized dispatching system considering different air-conditioning load characteristics. The micro-grid two-layer optimized dispatching method comprises the steps of: at a day-ahead dispatching layer, adopting different control for two kinds of air-conditioning loads according to levels of distributed air-conditioning load and centralized ice-storage air-conditioning load, regarding a minimum operating cost of the system as an optimization target, and regarding power balance constraint, power supply generating power constraints and air-conditioner operation constraint as constraint conditions; and at a real-time adjustment layer, selecting corresponding equipment for stabilizing fluctuations of renewable energy sources and loads according to the control method adopted for the air-conditioning loads at the day-ahead dispatching layer, regarding the minimization of power grid interconnecting line and storage battery power fluctuations as targets, and regarding power balance constraint, power supply generating power constraints and air-conditioner operation and adjustment constraint as constraint conditions. The micro-grid two-layer optimized dispatching method adopts a mode that different air-conditioning load coordinated control participates in micro-grid optimized dispatching, and gives full play to the capacity of different air-conditioning loads in micro-grid optimized dispatching.

The invention relates to the technical field of ice storage air conditioning, and particularly provides an air conditioning self-learning optimal control system. The air conditioning self-learning optimal control system aims to solve the technical problem of how to reduce the economic cost of using air conditioners by users. For the purpose, the air conditioning self-learning optimal control system is applicable to an ice storage air conditioner. The ice storage air conditioner includes an ice storage device, an air conditioner refrigerator and a cold quantity converter, wherein the ice storage device is connected with the cold quantity converter. The air conditioning self-learning optimal control system includes a cold load demand acquisition device for acquiring a cold load demand, an approximate optimal control strategy acquisition device for obtaining an approximate optimal control strategy, a local iterative judging device used for updating an optimal performance index value and the approximate optimal control strategy and a global iterative judging device for obtaining the optimal control strategy and calculating the user cost. Through the air conditioning self-learning optimal control system, the cold supply load can be balanced, the cold supply requirements of the users are met, and the economic cost for the users to use the air conditioners is saved.

The invention relates to a distribution-type household photovoltaic and ice storage optimizing coordinated control system and method. A photovoltaic and ice storage air-conditioning system stores solar energy in the mode of ice in the daytime, photovoltaic collecting of multiple low-energy densities is achieved, and cooling capacity is released at night. According to the characteristics of big data and historical data, the current ice storage quantity and the working mode of the system are determined through judgment of the control system, and the refrigeration requirements of users at night are met. Through the operation mode of the photovoltaic and ice storage air-conditioning system, the problem that at present, grid electricity supply is difficult due to the large air conditioning loadproportion is solved, and meanwhile the photovoltaic use ratio is increased; the ice is stored in the electricity using low ebb period of the daytime when residents go out, the cooling capacity is released in the electricity using peak at night, thus peak load shifting is achieved, the electricity using peak-ebb difference is decreased, the electricity using load on the grid side tends to be stable, and the generating efficiency of a generating unit is improved; and in addition, the solar energy in the daytime is stored and used at night, and the problem of photovoltaic inverse peak shiftingis solved.

The invention discloses a micro-grid optimal scheduling method considering ice-storage air conditioning and having a power and cooling coupled characteristic. The method comprises the following steps: establishing a micro-grid energy supply device dynamic operation model, comprising an ice-storage air conditioning unit and a combined cooling heating and power unit; and establishing coupled power and cooling demand micro-grid optimal scheduling model and establishing a micro-grid operation and scheduling computing method based on improved particle swarm technology. Through the method above, the micro-grid optimal scheduling method considering ice-storage air conditioning and meeting the coupled multi-energy demands can realize efficient utilization of renewable energy sources and clean energy; the method can meet the multi-energy demands of users at the lowest cost; and the method can improve power supply reliability of a large power grid.

The invention relates to a unit-type ice storage air conditioning system which comprises a refrigerant circulation loop, a secondary refrigerant circulation loop, an ice making loop and a refrigerating loop, wherein the refrigerant circulation loop is formed by sequentially connecting a fan, a throttling valve, a heat exchanger and a compressor; the secondary refrigerant circulation loop is formed by sequentially connecting a secondary refrigerant storage box, a control valve I, a centrifugal pump I, a heat exchanger and a subcooler; the ice making loop is formed by sequentially connecting an ice storage bucket, a control valve II, a gas-liquid mixing pump and the subcooler; the refrigerating loop is formed by sequentially connecting the ice storage bucket, a control valve III, a centrifugal pump II and the tail end of an air conditioner. The unit-type ice storage air conditioning system utilizes an ice making system to make and store ice at a low ebb of power utilization at night and utilizes stored ice slurry to carry out refrigerating and cooling at the peak of power utilization so as to take effects of carrying out peak load shifting and avoiding the peak of power utilization; the ice slurry is thawed and adsorbs heat at the tail end of the air conditioner at the user side and has a great quantity of latent heat of phase change and heat exchange temperature difference of the air at the tail end of the air conditioner and the ice slurry is high, so that the size and transport energy consumption of the heat exchanger can be effectively reduced; generated low-temperature supplied air has good heat comfort.

The invention belongs to the technical field of compressed air supply systems; the technical problem to be solved is that a compressed air supply system with a simple structure and convenient operation is provided. According to the technical scheme, the compressed air supply system comprises a compressed air supply device, an air curtain spraying system and an ice storage air conditioning system, wherein the compressed air supply device is used for supplying air for the ice storage air conditioning system through a first pipeline and supplying air for the air curtain spraying system through a second pipeline; the compressed air supply device comprises a confluence pipeline and at least one bypass pipeline, an air outlet of each bypass pipeline is communicated with the confluence pipeline, an air inlet of each bypass pipeline is connected with a compressed air bottle, a control valve is arranged on each bypass pipeline, and the two ends of the confluence pipeline are respectively communicated with the first pipeline and the second pipeline. The compressed air supply system is suitable for the field of coal mines.

The invention discloses a pneumatic ice storage air conditioning device for downhole rescue. The pneumatic ice storage air conditioning device comprises a mechanical refrigeration module consisting of a compressor, a safety valve, an oil separator, a condenser, a liquid storage device, a drying filter, a liquid spraying valve, a thermal bypass valve, a gas-liquid separator, a stop valve and the like, an ice storage box module consisting of liquid sight glass, a thermal expansion valve, an ice storage box, a stop valve and the like, a gas path module consisting of a compressed air source, an air filter, a pressure release valve, an atomized lubricator, a pneumatic motor, a flow adjustment valve, a pneumatic condensation fan, a muffler and the like, and a cold release module of a compressed air steel bottle, an adjustment hand valve, a pressure adjuster, a pneumatic fan, a muffler and the like. The pneumatic ice storage air conditioning device for downhole rescue is high in refrigeration efficiency; downhole compressed air is used as an air source, and no power supply is needed in a working process; a refrigeration system adopts a supercooling design; the system can realize continuous running, and a press does not need to be automatically controlled to be switched on and switched off; the compressor is connected with the pneumatic motor through a belt in a transmission manner; the pneumatic ice storage air conditioning device is high in assembling efficiency, and the transmission ratio is controllable.

The invention provides a dispatching method of an ice storage air conditioning system. The dispatching method comprises the steps that system real-time operation data, load prediction data, equipmentoperation maintenance plan data and system equipment parameters are obtained; the boundary condition of optimized dispatching is determined; according to the boundary condition of optimized dispatching, with the lowest system operation cost in the dispatching time period as the target, a predetermined optimized dispatching model is used for performing optimized dispatching calculation, and the hourly startup number of a base load unit and a double-working-condition unit and the hourly load of the ice melting amount are obtained; a load level in the optimization time period is determined according to an optimization dispatching result; and according to a preset equipment start-stop adjustment strategy and the determined load level, equipment start-stop time period adjustment is carried outto reduce the equipment start-stop frequency in the optimization time period. According to the dispatching method of the ice storage air conditioning system, the overall operation cost of a system onthe day can be reduced while the load requirements of each time period are met, the equipment start-stop frequency can be reduced, and system fluctuation caused by frequent equipment start-stop is avoided.

The invention relates to a plate type ice storage trough mainly comprising a group of heat exchange plates with through holes. The plate type ice storage trough is structurally characterized in that air-conditioning water channels are formed between the heat exchange plates; low-temperature fluid channels are formed between the heat exchange plates; the air-conditioning water channels and the low-temperature fluid channels are mutually alternated; the spacings of the air-conditioning water channels between the heat exchange plates are 40-120 mm; and the heights of the heat exchange plates are 0.2-3.0 m. The invention can reduce the system cost by 20-30 percent by combining a heat exchanger and the ice storage trough of an ice storage air-conditioning system into a whole, overcomes the defects of low ice melting speed of ice melting modes, i.e. internal ice melting, ice balls, ice plates, and the like, by adopting a close type external ice melting mode and provides the technical support for low-temperature air supply; and more importantly, the invention is beneficial to the modularization of the ice storage trough and the miniaturization and the domestication of the ice storage air-conditioning system due to a unique form.

The invention relates to an off-network photovoltaic direct-drive ice storage air conditioning refrigerator system which primarily comprises a photovoltaic power generation mechanism, a refrigeratingmechanism and an ice storage air conditioning refrigerator mechanism. The photovoltaic power generation mechanism comprises a solar panel photovoltaic panel and a compressor controller. The refrigerating mechanism comprises a direct current compressor, a condenser and an evaporating coil, and the direct current compressor, the condenser and the evaporating coil are connected in series successivelyto form a refrigerating loop; the ice storage air conditioning refrigerator mechanism comprises a refrigerating chamber, an ice storage room, a small capacity direct current water pump and a heat exchanger. A soft start function is achieved by using the direct current inverter compressor, so that the system can be also started to operate successfully in a low irradiation condition. By adopting ice storage, fluctuant and periodical changes of solar energy can be solved, and meanwhile, a cooling capacity is provided at night for indoor cooling. The off-network photovoltaic direct-drive ice storage air conditioning refrigerator system does not use electric energy of a power grid, can meet the cold using demand in a remote tropical zone and demands on conservation and storage of food and drugs, and has far-reaching significance to utilization of renewable energy sources more effectively.

The invention discloses an ice storage air-conditioning system for a refuge chamber, that is, a double-power ice storage air-conditioning system which makes and stores ice by taking mining pressure air as power in a normal standby state and which is used for storing cold and is driven by the pressure air or by manual power in emergency circumstances that disaster occurs in a mining shaft. The ice storage air-conditioning system comprises a double-power air-conditioning device, a refrigeration device, a temperature control device and an ice storage device, wherein the refrigeration device is driven by the mining shaft pressure air; the refrigeration device is used for reducing the temperature of the ice storage device to store the ice in a phase change manner; the temperature of the ice storage device is controlled through the temperature control device; the double-power air-conditioning device can be driven by the mining shaft pressure air or by manual stamping power, that is, is driven by the mining shaft pressure air in the normal standby state and is driven by the pressure air or the manual power in emergency circumstances that disaster happens to the mining shaft, thereby achieving the air-conditioning function.

The invention relates to cool-storage equipment in an ice storage air-conditioning system, in particular to an ice storage barrel with an air-ejecting and disturbing device. An ice storage coil pipe is arranged in the ice storage barrel; the ice storage barrel comprises an air pump, an air inlet pipeline, an air distributor and an air outlet pipeline, wherein the air pump is arranged outside the ice storage barrel and forms a closed loop together with the internal space of the ice storage barrel through the air inlet pipeline and the air outlet pipeline; and the air distributor connected with the air inlet pipeline is arranged in the ice storage barrel. According to the ice storage barrel, air is blown into the ice storage barrel through the pipelines to disturb water in the ice storage barrel so as to reinforce the heat convection efficiency in water of the ice storage barrel, ensure even temperature of water in the ice storage barrel, and improves the cold accumulation and release speed.

The invention discloses an ice storage air conditioning device. The ice storage air conditioning device comprises a box body; a water flowing controller is arranged in the box body; a loop pipe is arranged in the water flowing controller; spraying small holes are formed in the inner wall of the loop pipe; a water pump is arranged in a port of the loop pipe; a temperature controller is arranged on the outer surface wall of the loop pipe; an ice storage coil pipe is arranged in the box body near an inner ring of the loop pipe; a refrigerant leakage monitor is arranged at a refrigerant inlet end of the ice storage coil pipe, and a connecting pipe is arranged at the other end; the ice storage coil pipe is fixedly connected with a refrigeration circulator through a connecting pipe; a compressor is arranged on one side, near the connecting pipe, of the refrigeration circulator; and the compressor is connected with a condenser through a pipe. Water circularly flows in the loop pipe through the water pump; and in the flowing process, the water is sprayed out from the spraying small holes to accelerate liquidity of the water in the box body, so that the icing is accelerated, and the ice storage time is shortened.

The invention provides a multi-cold-source ice storage air conditioning system with a liquid level balance mechanism. The multi-cold-source ice storage air conditioning system comprises a cold recovering system, an ice storage device, an air conditioning load side system, a first ice storage pump, a refrigerating unit and the liquid level balance mechanism. The multi-cold-source ice storage air conditioning system has the benefits that the ice storage air conditioning system can realize recycle, storage and utilization of cold energy, saves resources, and improves the utilization efficiency of cold energy; as LNG (Liquefied Natural Gas) cold energy and a refrigerating unit are used for supplying cold together, the use requirements of users on the air conditioning system can be met, all resources can be fully used, and an active role on reducing energy consumption is played effectively; the liquid level balance mechanism solves the liquid level equilibrium problem of a first ice storage tank and a second ice storage tank; as a siphon pipe is omitted, cold loss generated by the siphon pipe can be reduced, and the cold accumulation efficiency is improved; for an indoor machine room, ice tanks can make full use of the height space in the machine room to reduce the occupied area of the ice tanks, so as to reduce construction cost of the machine room; for an outdoor machine room, the overall aesthetics of the ice tanks is improved.