296results about How to "Reduce installed capacity" patented technology

The invention relates to a wind energy and light energy complementary power supply system based on the energy storage of a super-capacitor, which comprises a DC / DC buck converter (20), an AC / DC converter (30), a super-capacitor unit (40), a DC / AC inverter (50), a DC / DC boost-buck converter (60), a photovoltaic array (70), a wind mill generator (80), an oil engine / commercial power interface (90), an AC load (100) and a DC load (200). The photovoltaic array (70) is connected with the super-capacitor unit (40) by the DC / DC buck converter (20). The wind mill generator (80) and the oil engine / commercial power interface (90) are connected with the super-capacitor unit (40) by the AC / DC converter (30). The super-capacitor unit (40) supplies power to the AC load (100) by the DC / Ac inverter (50) and the DC load (200) by the DC / DC boost-buck converter (60). The invention provides a super-capacitor energy storage device used for the wind energy and light energy complementary power supply system, which can continuously provide power for the communication systems and the residents in remote areas where a distribution network cannot reach.

Disclosed is a wind and solar hybrid power system based on an ultra-capacitor battery hybrid system, which includes a DC / DC buck converter (20), an AC / DC converter (30), an ultra-capacitor assembly (40), a DC / AC converter (50), a battery assembly (60), a battery charge circuit (700), a photovoltaic array (70), a wind generator (80) and an oil engine / commercial power interface (90). The photovoltaic array (70) is connected with the ultra-capacitor assembly (40) through the DC / DC buck converter (20); the wind generator (80) and the oil engine / commercial power interface (90) are connected with the ultra-capacitor assembly (40) through the AC / DC converter (30); the ultra-capacitor assembly (40) charges the battery assembly (60) through the battery charge circuit (700); the ultra-capacitor assembly and the battery assembly provides a definite power buffering to the system so that to maintain a stable voltage of the power supply. The wind and solar hybrid power system of the invention can provides uninterrupted power to the telecommunication system and resident living in the undeveloped areas where the power distribution network can not reach.

The invention relates to a unified power energy quality controller based on the serial-connection multiplicity of transformers and a chain structure, which belongs to the technical filed of flexible AC transmission and distribution of an electric power system and the power electronic. The unified power quality controller comprises a single-phase serial-connection multiple transformer bank and a single-phase chain H bridge converter, wherein the transformer bank consists of m single-phase transformers which form the serial-connection multiple transformer bank together with n voltage source converters connected with n secondary windings of m single-phase transformers respectively; the single-phase chain H bridge converter is provided with n chains and is formed by connecting n DC voltage supporting units and n power source converters, and an AC port of the n-chain single-phase chain H bridge converter is directly connected with the electric fence through a reactor, m and n are signless integrals equal to or more than 2, and m is less than or equal to n. The invention can realize accurate current control, has high dynamic responding speed, and can solve the problems of the traction substation of an electrified railway that the three-phase voltage is unstable and fluctuates, the power factor is low and the harmonic pollution exists, and the like.

The invention relates to a generating set sub-synchronous oscillation suppression method adopting a full-controlled variable current device. The method uses the variable quantity of a rotating speed signal of a generating set as a control quantity, and performs filter, phase shift, proportional amplification and operation processing on the variable quantity of the rotating speed signal to acquire a control signal for controlling a variable current power unit by using a voltage synchronization signal as standard, then the full-controlled variable current device generates a sub-synchronous model modulation current, and the current affects the rotating speed of the generating set through a power transmission unit so as to achieve the aim of suppressing the sub-synchronous oscillation of the generating set. A controller comprises a plurality of signal processing subunits and a main control subunit, wherein each signal processing subunit comprises a filter module, a phase shift module, a proportional amplification module and an operation module; and the main control subunit accomplishes the control for the full-controlled device. The method can effectively suppress the sub-synchronous oscillation problem of a power grid system, has high response speed and high tracing precision, and can greatly improve the stability and reliability of a power grid.

The invention provides a random reactive optimization method for a power distribution network including a wind power plant, which is used for eliminating adverse effects caused by various undetermined factors of the power distribution network and keeping the power distribution network run in a qualified voltage state. The method comprises the following specific steps: firstly, establishing a probability calculation model considering various random factors; secondly, establishing determining trend including a fan equivalent circuit, establishing a random trend model for the power distribution network including the wind power plant in combination with a semi invariant and Gram-Charlier series expansion method, and solving the voltage of each node and the probability distribution of reactive output of a generator; and lastly, establishing a reactive optimization model including the wind power plant by taking the voltage of each node and the probability distribution of the reactive output of the generator as the chance constraints of reactive optimization, taking the reactive output limit of the wind power plant as a constraint condition and taking a minimum active consumption expected value as a target function, and solving by using a genetic algorithm.

The invention provides a high-speed railway electric energy quality and traction network voltage comprehensive compensation system. The comprehensive compensation system comprises a single-phase back-to-back STATCOM installed on the traction side of a traction substation and thyristor switched high-pass filters installed in section posts. The single-phase back-to-back STATCOM is used for negative sequence compensation, lower-order harmonic filtration within the range of 2-11 order and power factor and traction network bus voltage control. The thyristor switched high-pass filters are used for absorbing high-order harmonic with the order of 11 or above and stabilizing the traction network terminal voltage. The single-phase back-to-back STATCOM can detect the power factor of the traction substation in real time, carry out dynamic stepless regulation on reactive output and maintain the power factor of the system to be 0.9 or above. The thyristor switched high-pass filters arranged in the section posts are used for absorbing harmonic currents with the order of 11 or above and improving the traction network voltage. The whole high-speed railway electric energy quality and traction network voltage comprehensive compensation system has the advantages of being small in occupies area, low in operation loss, low in construction cost, high in reliability, simple in technology implementation, prominent in comprehensive benefit and the like.

A process for desulfurizing, denitrifying and dusting the fume includes such steps as regulating the air supply of industrial furnace to decrease the generation of NOx, reversely spraying ammonia into combustion box, introducing oxygen to back smoke chamber, removing dust, reaction in centrifugally spraying drying tower to generate ammonium sulfate, separating, and washing in supergravitational washer. Its apparatus is composed of cyclone duster, draught fan, centrifugal spraying drying tower, oxygen generator, supergravitational washer and cyclone separator. Its advantages are high effect, low cost and no secondary pollution.

The invention discloses a refrigeration power balance control method of a refrigeration container ship and a control system thereof. The method comprises the steps of: collecting the operation states of refrigeration containers, the environment temperature and humidity, the operation states of cargo compartment fans, a wind speed and illuminance; extracting and processing the received information, establishing a nerve network model of the temperature change and energy consumption prediction, and predicting the time and the energy consumption for the refrigeration state of each refrigeration container to reach a critical temperature point; combined with a diesel generator load factor-oil consumption curve and the operation states of the cargo compartment fans, establishing a multi-target power balancing and optimization scheduling module, and solving a control and optimization scheduling strategy of the refrigeration containers; and according to the control and optimization scheduling strategy of the refrigeration containers, sending a control instruction to the refrigeration containers and the cargo compartment fans. According to the invention, the unified scheduling and management of the refrigeration container refrigeration power are realized, the load power balance is maintained, the cargo loading capacity is increased or the installed capacity is lowered, and the ship construction and operation cost is lowered.

The invention relates to a novel quick drying device for edible mushrooms and a quick tremella drying technology of the novel quick drying device. The novel quick drying device for the edible mushrooms comprises a drying box, which is characterized in that a plurality of layers of independent drying conveyor mesh belts are longitudinally arranged in the drying box, and a hot air pipe of which the upper side is provided with a blowing port and a microwave or far infrared heating device controlled by an intelligent controller are both mounted on the drying conveyer mesh belts; the length of the layers of drying conveyor mesh belts is 30-60 km, the conveying speed is 0.25-0.65m / min, and the drying time from feeding to discharging is 1.5-2 hours; tremella is dried to have the moisture content of 8%-12%, the drying process is controlled by a PLC (Programmable Logic Controller), the tremella on each layer is orderly and alternatively dried by the hot air, the microwave or the far infrared and the hot air, and the drying temperature for the tremella is strictly controlled to be 78-82 DEG C; and the temperature and the humidity are synchronously monitored, and moist steam is removed timely. The novel quick drying device for the edible mushrooms and the quick tremella drying technology can save large amount of electric energy consumption, reduce large amount of energy consumption and carbon emissions, improve automation degree, reduce labor charges and artificial loss and greatly improve the level of cleaner production.

The invention discloses a small multifunctional solar battery air conditioner, comprising outdoor unit, indoor unit, solar heat collector and energy storage tank, where outdoor heat exchanger is connected with the solar heat collector and adopts air cooling. And it integrates refrigeration (cold storage) and heating (heat storage) as well as living hot water supply, having characters of compact structure and unit miniaturization; its cold storage density is higher than that of water cold storage system; on the condition that outdoor temperature is below -15deg.C, it can still normally supply heat indoors, and the heat temperature is uniform. And its performance coefficient can be up to above 3.0, reducing energy source consumption, fully using renewable energy sources and balancing power loads. In addition, it has characters of environmental protection, saving energy, safety, etc.

A conventional air-conditioning operating condition distributed phase change energy storage air conditioning system comprises a cooling system, an air treatment and regulation system, a distributed phase change energy storage device, an automatic control device used for controlling and coordinating the systems and pipelines connected to the automatic control device. The conventional air-conditioning operating condition distributed phase change energy storage air conditioning system is characterized in that the conventional air-conditioning operating condition distributed phase change energy storage device is arranged. Since the phase change energy storage device can be embedded seamlessly whenever and wherever, the fatal defect that a chilled water storage system is large in occupation space and cannot be popularized is overcome, the problems that an ice storage system is low in energy efficiency ratio of a main cooling unit and heat exchanging efficiency is low due to multiple heat exchanges are solved, the load of the air conditioning system can be regulated whenever and wherever, and the main cooling unit can be under an optimal operating condition constantly; if combining a peak and valley electricity price policy, the main cooling unit can be operated in the valley electricity price period annually, the power cost of the conventional air-conditioning operating condition distributed phase change energy storage air conditioning system can be comprehensively saved by 50% around as compared with that of a conventional air conditioning system.

The invention provides a series-parallel inverter combined optical storage microgrid structure and a control method. The whole optical storage microgrid system is formed by an energy storage subsystemand a photovoltaic subsystem which are mutually connected in parallel, wherein the energy storage subsystem and the photovoltaic subsystem supply power for an equivalent regional load concurrently through respective line impedance. The energy storage subsystem and the photovoltaic subsystem are respectively formed by cascading a plurality of inverter modules which are mutually connected in series, and realize improvement in voltage level and power capacity. Compared with the traditional hybrid optical storage microsource, the system structure provided by the invention can realize flexible control for a single energy storage and photovoltaic unit and improve the conversion efficiency of the whole system. In addition, the invention provides an MPPT algorithm based droop control method in order to realize the maximum utilization ratio of renewable photovoltaic energy; and the invention provides an SOC algorithm based upper droop control strategy in order to realize supply and demand power balance of the system and the charge state balance between the series energy storage modules, and reasonable power flow and stable voltage frequency of the off-grid system are achieved without communication.

The invention discloses a whole ship power balance control system and control method for a refrigerated container ship. The control system comprises an environmental data collector, a cold box controller, a cold box centralized controller, a fan controller, a fan centralized controller and a refrigerated container ship whole ship power balance control system. According to the system and the method, whole ship refrigerated containers are taken as a unified management object, the power consumption of all loads except the whole ship refrigerated containers is predicted, the refrigerated containers are dispatched, a ship power station is controlled, the whole ship power balance control is formed, the states of the refrigerated containers are separately monitored, the refrigerated containers are dispatched, compared with a method of maintaining the power balance of the refrigerated containers, the method of the invention has the advantages that the load prediction of other loads and the control of the ship power station are added, and the effects of reducing an installed capacity and reducing the operating cost are also more remarkable.

The invention relates to a zoning cold supply energy saving system and method of a data center air conditioner; the zoning cold supply energy saving system is characterized in that a machine room space is formed by an overhead floor, an indoor ceiling and a wall, wherein a common cold supply air conditioner and an accurate cold supply air conditioner are arranged in the machine room space; the machine room space comprises an accurate cold supply space and an external common refrigerating space; the accurate cold supply space is formed by a lower space of the overhead floor, an inner space of a machine cabinet, an air supply pipeline, an air return pipeline and the accurate cold supply air conditioner, and the external common refrigerating space is formed by an upper space of the overhead floor and the common air conditioner. The common air supply conditioner sends out cold air to the common refrigerating space; the same amount of cold air is returned; and the accurate air supply conditioner sends out cold air to the accurate refrigerating space. The zoning cold supply energy saving system completely changes the mode that for the traditional precise data center air conditioner, the total power of display cold of the air conditioner is calculated by the area of the whole machine room, thereby the required cold quantity is accurately calculated by using the area of the cold supply space; and therefore, under the condition that the energy consumption is greatly reduced, the installed capacity and the cost of the air conditioner are simultaneously reduced; and the requirement of equipment inside a cabinet for high-efficiency cold supply is also ensured.

The invention discloses an energy-saving system using a heat recovery type water source heat pump unit and a control method for the energy-saving system. The energy-saving system using the heat recovery type water source heat pump unit consists of a domestic hot water tank, an air-conditioning tail end, a ground source heat exchange system, the heat recovery type water source heat pump unit and a water source heat pump unit. The energy-saving system can meet the requirements of cold supply, heat supply and hot water supply of a building; in summer, the system can be used for refrigeration and can recover waste heat to prepare domestic hot water during refrigeration; in winter, the unit can supply heat, and the domestic hot water can be prepared; in spring and autumn, the domestic hot water can be prepared at random; and the installed capacity of equipment can be saved to the maximum extent, and the system is energy-saving and environment-friendly and is widely applied to places such as hotels, public houses, hospitals, residences and the like.

The invention discloses a method for controlling a frequency modulation or peak regulation mode in an optical-storage combined system, and the method comprises the steps: 1, setting a peak regulationcharging and discharging time period according to the peak-valley time period of a local load and the photovoltaic output condition; 2, setting SOC partitions of an energy storage battery; 3, detecting a power grid frequency f by the optical-storage combined system, and judging an energy storage operation mode; 4, considering the idle capacity limiting condition of an inverter; 5, setting the maximum output constraint coefficient lambda SOC of the energy storage battery; and 6, considering the maximum constraint coefficient limiting condition. The idle capacity of the photovoltaic inverter canbe fully utilized, so that the photovoltaic power station has the frequency modulation / peak regulation capacity, and the pressure of a power grid frequency modulation unit and a peak regulation unitis reduced.

The invention discloses a passive cooling air conditioning method and a device thereof. The passive cooling air conditioning method is as follows: air out of an air conditioning area is processed by an air processer to be sent into the air conditioning area, and exhausted air in the air conditioning area is discharged out of the air conditioning area after passing through the exhausted air cavity of a passive cooling integration device. The invention can be applied in various air conditioning systems, can combine active cooling and passive cooling into a whole, takes the active cooling mode to carry out air conditioning in the air conditioning area and drastically adsorbs the solar radiation energy of translucency building envelope in a passive cooling mode, thus effectively lowering indoor air conditioning load; air output is lowered, the overall dimension of the unit is reduced, the section surface of the air hose is lowered, so that the air hose is easy to cooperate with building space, and cost is low. The invention is suitable for air conditioning in rooms of various living buildings, public buildings, industrial buildings and the like and is especially applied in various buildings of dry and tropic regions.

The invention discloses a technique for cooling a deep mining area by using the ground temperature of a shallow goaf and a waste roadway. An air intake fan station (9) is arranged outside an air intake port of a deep operating middle section (5); a return fan station (10) is arranged outside an air outlet port of the deep operating middle section (5); the air intake fan station (9) is communicated with a deep downcast shaft (4); the return fan station (10)is communicated with an air return shaft (6); pre-cooling fans (3) are arranged at all the exits of the shallow goaf and the waste roadway (2); and an air door (7) is arranged on a natural ventilation air passage (8) shared by the shallow goaf and the waste roadway (2). According to the invention, an air flow circuit and the pre-cooling fans (3) are adopted to adjust the downcast air flow, and through the technique, the high-temperature air flow can be totally or partially pre-cooled in summer so as to reduce the wind enthalpy which enters the deep high-temperature area and to improve the heat extraction and cooling abilities of the system. In winter, the pre-cooling fans are turned off and the heat accumulated in summer is expelled through natural ventilation. Therefore, the technique realizes alternating multiple heat balance and use in winter and summer in a mine.

The invention discloses an ice storage refrigeration system and a refrigeration method thereof, which relate to the technical field of refrigeration air conditioners. The ice storage refrigeration system comprises a refrigeration unit, a tail end device, an ice making unit, a heat exchange device and an ice storage device, wherein an evaporator of the ice making unit, the ice storage device and acold fluid flow passage in the heat exchange device are connected by a pipeline loop; a hot fluid flow passage in the heat exchange device is connected with the loop of the tail end device via a pipeline; a loop between the condenser of the ice making unit and the evaporator of the refrigeration unit is provided with a pipeline; and the cooling water of the condenser of the ice making unit is supplied after being precooled to 2-20 DEG C by the refrigeration unit. According to the ice storage refrigeration system, the problems that the traditional refrigeration unit can not work under the ice making working condition and a refrigeration unit of double working conditions has big compression ratio, high cost and the like and is complex to control under the ice making working condition are solved, the cost of the refrigeration system can be lowered, and ice making efficiency and operation stability are improved.

The invention relates to a reactive compensation method capable of computing temporal characteristics of loads for a power distribution network. The method comprises the following steps of drawing a typical full temporal characteristic curve for a daily load according to the load type of each load node of the power distribution network and a power utilization rule of all kinds of loads; secondly, establishing a reactive power scheduling mathematic model with minimum annular active power loss of the whole power distribution network as a target function on the basis of guaranteeing voltage eligibility; thirdly, obtaining a reactive power scheduling result of each time section through solution of a model; and lastly, determining a reactive compensation scheme of each node according to the reactive power scheduling result. According to the reactive compensation method, a reactive power scheduling model is established according to the typical full temporal characteristics for the daily loads of the different types of loads, so that the uncertain problems of the loads can be accurately processed, and thus the planning result is closer to the reality, and furthermore, the temporal complementary property required by the loads of the power distribution network is fully considered, so that the installed capacity of reactive compensation equipment is saved, and the effectiveness for reactive planning and configuration of the power distribution network is improved.

The invention discloses a pre-purification hydraulic, automatic and selective water intake device, including a water intake head, a support rack, a concrete anchor pier, a water pipe, a drug feeding pipe, a workbench and an operating room; wherein the water intake head is an integral cylinder, respectively from top to bottom: a balance pontoon, an adjustment water tank, an equipment room and a coagulation basin; two sets of water inlet pipes equipped with waterproof electric valves and water outlet pipes connected with submersible pumps are arranged inside the adjustment water tank, and the drug feeding pipe is arranged in the equipment room; the coagulation basin has a water intake and a water drain pipe, a baffle is arranged in the middle of the coagulation basin, and a coagulant nozzleis arranged above the water intake; the upper end of the support rack is the workbench, the lower end of the support rack is fixed on the bottom of the lake via the concrete anchor pier, and the water intake head can slide on the support rack upward and downward to freely adjust the water intake level; and, the water drain pipe on the water intake head is in turn connected with a metal bellow, a PE water pipe and a fixed water pipe on the bank via flanges. The device is simple in structure and convenient in installation.

The invention discloses a cryogenic refrigerating unit, used for recovering the vapor of the volatile fuel oil (such as gasoline) with condensing method and also used for recovering the vapor of other type of volatile materials (such as alcohol). The unit comprises at least two refrigeration systems, each of which comprises a compressor, a condenser, an expansion valve and a plurality of evaporators; the evaporators of the refrigeration system are arranged inside an oil gas pipeline in turn; and an exhaust tube is arranged behind the last evaporator. The invention is characterized in that a refrigerating capacity recovering device is connected with the exhaust tube in series. The cryogenic refrigerating unit has the advantages that the exhaust gas discharged from the last evaporator can be reclaimed so as to reduce the energy consumption of the system and increase the energy utilization ratio, reduce the energy waster, greatly reduce the heat load of the device and the installation capacity, reduce the device cost and the initial cost, and increase the operation efficiency.

Disclosed is a air patenting heat hump energy storage air conditioner, comprising outdoor component, indoor component and energy storage device. The outdoor component includes compressor 1, cryogen pump 2, outdoor heat exchanger 3, throttle valve 4-5, four-way reversing valve 6 and solenoid valve 7-10; the indoor component includes indoor heat exchanger 11 and throttle valve 12; the energy storage device includes energy storage slot,13 energy storage coil pipe 14 and energy storage material 15. The invention has the advantages that it can reduce hill and increase dale and balance electric load, energy storage air conditioner is an effective method of electric load which needs reduction of hill and increase of dale, saves electricity cost and reduces machine volume, enlarges its use area, solves the problems of frequent defrostation in the present heat pump air conditioner and bad heating effect, and can operate normally under -10deg.C.

The invention relates to a fresh eucalyptus log barking machine, which is used for stripping the bark of fresh eucalyptus logs. The barking machine is provided with a drive mechanism, and is characterized in that: a feed mechanism, a striped-roller radial pressure-applying mechanism and a discharge mechanism are sequentially mounted on a chassis; the feed mechanism is provided with a pair of feed rollers, between which a hobbing cutter is mounted; the striped-roller radial pressure-applying mechanism is provided with a pair of striped rollers, on which a pair of striped teeth in phase are lacked; the discharge mechanism is provided with a pair of discharge rollers; a fresh eucalyptus log respectively passes along a longitudinal track between the two axes of the feed rollers, the two axes of the striped rollers and the two axes of the discharge rollers; and the shafts of each feed roller, each discharge roller and each striped roller are respectively connected with the drive shaft of the drive mechanism through respective universal joints. The invention has the following advantages that: the installed capacity is low, the machine body size is small, and the barking machine can be towed by a walking tractor, and can go deep into a forest region to operate.

The invention relates to an improved four-ditch type oxidation ditch comprising a four-ditch type oxidation ditch, wherein the four-ditch type oxidation ditch comprises four oxidation ditches; each oxidation ditch is provided with aeration equipment; communication holes for communicating the two adjacent oxidation ditches are reserved on the public pond walls among the four oxidation ditches. The invention is characterized in that anaerobic ponds are arranged in the front of the four-ditch type oxidation ditch; the anaerobic ponds are respectively connected with the corresponding four oxidation ditches through four control valves; and the sludge in the side ditches for precipitation of the four-ditch type oxidation ditch reflows to the anaerobic ponds through a sludge reflux pump. Based on the improved four-ditch type oxidation ditch, the invention provides a sewage treatment method of the improved four-ditch type oxidation ditch. The improved four-ditch type oxidation ditch and the sewage treatment method thereof can enhance the efficiency of biological dephosphorization and denitrification, enhance the utilization rate of the equipment, reduce energy consumption and save investment and operation cost.

The invention discloses a phosphoric acid production device by employing a hot method, and belongs to the technical field of energy-saving technologies of phosphoric acid production by employing a hot method. The device comprises a combustion tower, an absorption tower, a dynamic wave demister, a gas-liquid separator and an induced draft fan, wherein the combustion tower is communicated with the inlet in the top of the absorption tower; the absorption tower is connected with the dynamic wave demister; the dynamic wave demister is communicated with the induced draft fan through the gas-liquid separator; meanwhile, the absorption tower is connected with a heat exchanger through an absorption tower circulating pump; the heat exchanger is communicated with the absorption tower to form a loop through a pipeline; and the dynamic wave demister and a demister circulating pump form a loop through a pipeline. According to the device, the resistance of the system is reduced, the dosage of circulating acid and circulating water is lowered, the installed capacity of the system is greatly lowered, energy conservation and consumption reduction are achieved, the production capacity of the system is improved, and the device has the characteristics of low investment cost, small floor area, low power consumption, low production cost, and low coal resource and water resource consumption.

The invention relates to an airplane ground air-conditioning vehicle utilizing exhaust waste heat of a diesel engine, an inlet of a fan is connected with an air inlet mounted on the wall surface of a compartment body through an air passage, an outlet of the fan is connected with a refrigeration heat exchanger by the air passage, the refrigeration heat exchanger is connected with an exhaust waste heat recovery heat exchanger of the diesel engine, and the exhaust waste heat recovery heat exchanger of the diesel engine is connected with two interfaces of air supply pipes through a variable diameter air passage; and an exhaust port of a diesel generator is connected with an exhaust muffler, and the outlet of the exhaust muffler is connected with an exhaust three-way control valve. The airplane ground air-conditioning vehicle adopts the recovery of the waste heat contained in exhaust of the diesel engine for heating air, thereby replacing the practice of heating the air in the electric heating way or the air source heat pump way in the traditional airplane ground air-conditioning vehicle; and the airplane ground air-conditioning vehicle has the advantages of recovering and utilizing a large amount of heat energy which is discharged into the environment and is not utilized in the traditional air supply heating method, realizing the obvious energy-saving effect and simultaneously reducing the installed capacity of a power supply power system of the airplane ground air-conditioning vehicle.

The invention provides a tidal power generation method and a universal tide power plant. Two reservoirs A and B are enclosed by a cofferdam method on a shoal or shallow sea; furthermore, a water inlet strobe and a water outlet strobe are arranged on the cofferdam to correspond to the reservoir A and the reservoir B; a separation levee between the reservoir A and the reservoir B is provided with a hydraulic generator set which generates power by water head; when an astronomic tide ebbs to the lowest tide level, the water outlet strobe corresponding to the reservoir B is closed to wait for flood tide; when the tide is flooded, the water inlet strobe of the reservoir A is opened and the water enters; furthermore, when the water level reaches the water head between the reservoir B and the reservoir A more than the minimum design of the water head difference for generation, the hydraulic generator set starts to generate power; when the astronomic tide is flooded to the highest tide level, the water inlet strobe of the reservoir A is closed, and the hydraulic generator set continues to generate power by the water head between the reservoir A and the reservoir B when the water level of the B reservoir ascends and the water level of the reservoir A descends; when the tide level ebbs below the water level of the reservoir B, the reservoir B is opened and the water is discharged out, leading the water level of the reservoir B is reduced to the minimum tide level with the ebb and the hydraulic generator set can continue to generate power till the tide is flooded to the next circulation. The invention has the advantages of long generation time, low manufacture cost of unit electric energy, strong controllability of electric energy quality, wide applicable range of plant establishment, high comprehensive exploitation rate of resource, etc.

The invention relates to a carbon dioxide refrigerating system and a refrigerating method thereof. The carbon dioxide refrigerating system comprises a compressor, a condenser, a liquid storage deviceand an evaporator which communicate in sequence, wherein a suction assembly is arranged between the compressor and the condenser; the suction assembly communicates with the liquid storage device or agas-liquid separator; the gas-liquid separator is arranged between the condenser and the liquid storage device; and carbon dioxide gas in the liquid storage device or the gas-liquid separator can be pumped back into a pipeline between the compressor and the condenser through the suction assembly. The carbon dioxide refrigerating system has the beneficial effects that the gas and liquid can be effectively separated, and part of the liquid can be flashed to subcool the carbon dioxide; the flash evaporation type condenser can achieve a refrigerating effect through radiation, and aerosol is formedin a cavity, so that the evaporation and the cooling are rapid and the refrigerating efficiency is increased; and the refrigerating system is simple in structure, convenient to operate and low in installation and maintenance costs.