434results about How to "Improve COP" patented technology

In a heat pump cycle, a first high-pressure side heat exchanger is disposed to perform a heat exchange between refrigerant discharged from a compressor and a first fluid, and a second high-pressure side heat exchanger is disposed to perform a heat exchanger between refrigerant from the first high-pressure side heat exchanger and a second fluid having a temperature lower than that of the first fluid. Accordingly, a heat quantity obtained from the heat pump cycle is the sum of a heat amount obtained from the first high-pressure side heat exchanger and a heat amount obtained from the second high-pressure side heat exchanger.

The invention discloses a landscape water quality online early warning system which comprises a landscape water quality online monitoring system, a data center and a main control computer. The landscape water quality online monitoring system is used for monitoring landscape water quality data and performing data transmission with the data center; the data center is used for controlling the landscape water quality online monitoring system and storing water quality data sent back by the landscape water quality online monitoring system; the main control computer processing data in a database at any time by calling and operating a functional module, and realizing the analysis and management of online monitored water quality data; and when water quality is worsened, the main control computer performs forecasting and early warning, and puts forward a contingency plan according to early warning situations. The variation trend of water quality can be mastered through the landscape water quality online early warning system, the water quality worsening trend can be early warned in time, the water environment quality of urban landscape water body is guaranteed, and scientific basis and technical support are provided for the effective analysis and management of water quality data during the running process of landscape water body.

A freezer-refrigerator comprising: a refrigeration compartment (2) for refrigerating and storing an object to be stored; a freezing compartment (4) for freezing and storing an object to be stored; a first compressor (11) for operating a first refrigeration cycle (10) in which a first refrigerant flows; a first heat dissipater (12) provided to a high-temperature section of the first refrigeration cycle (10); a first evaporator (14) provided to a low-temperature section of the first refrigeration cycle (10); a second compressor (21) for operating a second refrigeration cycle (20) in which a second refrigerant flows; a second evaporator (24) provided to a low-temperature section of the second refrigeration cycle (20); and an intermediate heat exchanger (31) for performing heat exchange between the low-temperature section of the first refrigeration cycle (10) and a high-temperature section of the second refrigeration cycle (20). The first evaporator (14) cools the refrigeration compartment (2), and the second evaporator (24) cools the freezing compartment (4).

In an ejector-type refrigeration cycle device provided with a first compression mechanism (11a) and a second compression mechanism (21a), a refrigerant outlet of a suction-side evaporator (16) is connected to a refrigerant suction port (13b) of an ejector (13), and the second compression mechanism (21a) is provided between the suction-side evaporator (16) and the refrigerant suction port (13b) ofthe ejector (13). Thus, even under an operation condition such that the suction capability of the ejector (13) reduces with a reduction in the flow rate of the driving flow of the ejector (13), the suction capability of the ejector (13) can be assisted by the second compression mechanism (21a). Consequently, even when the flow rate of the driving flow changes, the ejector-type refrigeration cycledevice can be stably operated.

A rotary two-stage compressor comprises: a motor having a rotary shaft; and a rotary compression element where a compression element for low pressure, a middle partition board, and a compression element for high pressure are laminated in lamination successively from the motor side for integration in a closed container, thus performing the eccentric rotation of the compression element for low pressure and the compression element for high pressure for drive by two eccentricity sections being provided at the rotary shaft. The compressor also has a through hole for passing the rotary shaft to the intermediate partition board and the through hole is set to be nearly in a truncated cone shape. To improve the degree of design freedom in an intermediate shaft by reducing the refrigerant leakage loss and mechanical loss of a two-stage compressor.

A refrigerating apparatus including three compressors (2A, 2B, 2C) and application side heat exchangers (41) (45, 51) for two channels is formed so that a first compressor (2A) is used only for the application side heat exchangers (45, 51) in a first channel of a circuit, a third compressor (2C) is used only for the application side heat exchanger (41) in a second channel of the circuit, and a second compressor (2B) is used in a switchable manner between the application side heat exchangers (45, 51) in the first channel of the circuit and the application side heat exchanger (41) in the second channel of the circuit. Thus, not only the pipe arrangement at suction side is simplified, but also operation control is streamlined.

In a dehumidification-air heating mode, a refrigerant circuit is configured such that a refrigerant outlet side of an exterior heat exchanger communicates with a heating side refrigerant suction port of a heating side ejector as a refrigerant decompression means, and that a refrigerant inlet side of an interior evaporator communicates with an outlet side of a heating side diffuser of the heating side ejector. A refrigerant evaporation temperature in the exterior heat exchanger is set lower than that of the interior evaporator by a pressurizing effect of the heating side ejector. Thus, the amount of heat absorption by the refrigerant at the exterior heat exchanger is increased to improve the heating capacity of the air in an interior condenser.

Embodiments of the invention disclose a nuclear power plant diversity driving system, a nuclear power plant diversity driving method and a diversity protection system. The nuclear power plant diversity driving system is used for protecting the safety of a nuclear power plant when a reactor protection system fails, and comprises a signal receiving module used for receiving a detection signal, logic processing modules used for logically processing the detection signal to judge whether there is a design basis accident and generating a driving signal when judging that there is a design basis accident, and a signal output module used for outputting the driving signal to an actuator to drive the actuator to act. According to the invention, a design basis accident can be detected automatically, and a driving signal can be generated correspondingly to automatically make the actuator act.

The invention discloses an intelligent multi-rotor UAV (unmanned aerial vehicle) based on a vehicle-borne computer and a realization method thereof. The intelligent multi-rotor UAV comprises a frame,a motor group, a propeller, a battery pack, a flight control board, a vehicle-borne computer and a communication module. The vehicle-borne computer collects a visual signal in real time and processesthe signal, receives real-time flight status parameter information sent by the flight control board, generates decisions and intelligent navigation and sends a control command to the flight control board. The vehicle-borne computer also communicates with the outside via the communication module. The flight control board receives the control command, carries out closed-loop control of the motor group, adjusting a flight attitude in real time, collects real-time flight status parameter information of UAV and sends the information to the vehicle-borne computer. The UAV and the realization methodare based on autonomy, a cerebrum and a cerebellum are separated, computer vision is used as a main external sensing tool, the severe dependence on traditional various UAV sensors, remote control methods and data long-distance transmission receipts are broken, thus the intelligent multi-rotor UAV has real independent intelligence features and work autonomously in an environment with very severe interference.

A refrigeration cycle apparatus (50) includes: a main refrigerant circuit (21) having a compressor (1), a radiator (2), a first expansion mechanism (5), a second expansion mechanism (6), and an evaporator (4); an injection passage (22) for supplying an intermediate-pressure refrigerant to an injection port 1c of the compressor 1; and a water circuit (30) through which water to be heated in the radiator (2) flows. The refrigeration cycle apparatus (50) includes a sub heat exchanger (3) for cooling the water in the water circuit (30) by exchanging heat between the refrigerant in the injection passage (22) and the water to be heated in the radiator (2).

A quick heating type heat pump water heater for recovering shower waste heat is composed of a condenser, an evaporator, a throttling device, a compressor, a heat regenerator, a preheater, a primary water tank, an auxiliary water tank, a water mixing controller, a spraying device and a valve. The heat regenerator and the evaporator are installed under the feet of a shower person, the spraying device is arranged above the head and communicated with the water mixing controller, the preheater is arranged in the auxiliary water tank, the condenser is arranged in the primary water tank, the water outlet end of the auxiliary water tank is connected with an inlet of the water mixing controller, and the water inlet end of the auxiliary water tank is connected with a water outlet pipe of the primary water tank. One end of the valve is connected with tap water, the other end of the valve is respectively connected with a water inlet pipe of the primary water tank and a water inlet pipe of the heat regenerator, and the water outlet end of the heat regenerator is communicated with the water mixing controller. The condenser, the throttling device, the evaporator and the compressor form a closed loop, an outlet of the condenser is connected with an inlet of the throttling device, an outlet of the throttling device is connected with an inlet of the evaporator, an outlet of the evaporator is connected with an inlet of the compressor, and an outlet of the compressor is connected with an inlet of the condenser.

An integrated unit (20) is formed by integrally assembling an ejector (14), a first evaporator (15) that evaporates refrigerant discharged from the ejector, a second evaporator (18) that evaporates the refrigerant drawn into the ejector, a refrigerant dividing portion (16b) that adjusts a flow amount of refrigerant flowing in and divided to the nozzle portion (14a) and the second evaporator, and a joint (26) in which a refrigerant inlet (24) and a refrigerant outlet are formed. In the joint, there is formed a gas-liquid separation portion that causes refrigerant flowing therein to swirl to separate it into gas and liquid. The ejector, refrigerant dividing portion and joint are arranged in a longitudinal direction of the ejector.

The invention relates to an ultra-short-term photovoltaic power prediction method. The method includes using a longitude and latitude correction method for correcting a fisheye cloud picture; quicklyextracting feature points from the foundation cloud atlas sequence by adopting an HSVSURF algorithm; quickly matching and correcting the feature point pairs, and extracting and predicting a cloud cluster motion track; finely extracting the cloud cluster by using an improved threshold segmentation method, and proposing an irradiation coefficient for visually representing the irradiance condition atthe next moment; establishing an ultra-short-term photovoltaic power prediction model based on the improved IAM-CNN-LSTM hybrid neural network; initializing the weight of the hybrid neural network, and setting the maximum number of iterations; establishing a convolutional neural network, and inputting the feature matrix into the model; optimizing a network structure by using a control variable method; if the maximum number of iterations is reached, iterating to stop outputting the network parameters; and performing ultra-short-term power prediction by using the trained composite network to obtain predicted power of the to-be-predicted time point. Compared with the prior art, the invention has the advantages of improving the prediction precision and the like.

The invention relates to an integrated electronic record, signature and fingerprint system. The system comprises: (1) a police information resource database and a social information resource database for forming a sharable information resource database in a police intranet; (2) a comprehensive application platform based on police information; (3) an electronic fingerprint database constructed according to the requirement of standard fingerprint information collection of the ministry of public security and capable of being applied for special subjects; (4) a full text retrieval system; (5) a hybrid architecture using a C/S structure system, or a B/S structure or the combination of the C/S and B/S structure systems; (6) a unit adopting an MD5 algorithm for digital signature so as to ensure not to modify a generated record file, and a unit adopting Blowfish encryption algorithm for preventing leakage of the record data; and (7) a unit with integrated XML (extensible markup language) and WebService. The electronic record can greatly lower the case handling cost, improves the case handling efficiency, and can expand the information sources.

In a refrigerant cycle with an ejector, there is provided with a bypass passage through which a part of high-pressure refrigerant from a radiator flows into a low-pressure refrigerant passage between an evaporator and a suction port of the ejector while bypassing a nozzle of the ejector. Further, a control valve is disposed to open the bypass passage so that refrigerant flows through the bypass passage when the pressure of the high-pressure refrigerant becomes in a predetermined condition. Accordingly, it can prevent the pressure of the high-pressure refrigerant from being excessively increased due to increase of a refrigerant flow amount. Therefore, the refrigerant cycle operates stably.

The invention discloses an air-conditioning system of an automobile for improving the condensing effect by gasifying liquefied natural gas (LNG). An LNG precooler is arranged in front of a condenser. External air passes through the LNG precooler before entering the condenser, and the temperature falls, so that LNG is used for cooling the air passing through the condenser, the condensing effect of a refrigerant in the condenser can be improved, the temperature of the refrigerant at the outlet of the condenser is lowered, the refrigerating quantity and COP (Coefficient Of Performance) of a refrigerating system can be increased, and a small-power compressor and a small condenser can be used.

A refrigerant cycle system includes a condenser having a condensation portion for condensing refrigerant discharged from a compressor, and a receiver for separating refrigerant from the condensation portion into gas refrigerant and liquid refrigerant, and for storing the liquid refrigerant. In this system, refrigerant from the condensation portion flows into the receiver through a first communication hole, and liquid refrigerant in the receiver is discharged through a second communication hole in which a pressure loss is generated. Further, gas refrigerant at an upper side in the receiver is discharged to a downstream side of the second communication hole through a gas bypass pipe.

The invention discloses a double-processor borne computer which relates to a double-processor technology applied in the aerospace field. The double-processor borne computer solves the problem that ping pong switch and ping-pong right robbing are difficult to avoid in the arbitration method in a borne computer of the traditional double-processor borne computer. A master computer, a slave computer,a power supply, an arbitration module and an IO module of the double-processor borne computer are all fixed on a base plate and connected mutually through data address buses, signal wires and power wires on the base plate, wherein the logical relation of the arbitration module is that: the working condition of the master computer is that an star arrow separation signal is ineffective, an output enable signal of the slave computer is ineffective, and a ready signal of the master computer is effective, or a remote control switch master computer signal is effective; and the working condition of the slave computer is that: an output enable signal of the master computer is ineffective, a generator tripping enable flag is effective, a ready signal of the master computer is ineffective, and a ready signal of the master computer is effective; or an automatic generator tripping signal of the master computer is effective, and the generator tripping enable flag is effective; or a remote control switch slave computer signal is effective.

The invention provides a solar energy storage heat pump air conditioning system on the basis of solution. The invention is a new heat pump air conditioning system which performs the heat humidity independent processes in summer, absorbs the heat from the air with the help of the solution in winter, realizes the functions of cooling and heating and takes full advantages of the solar energy and is capable of storing the energy. The system comprises a solution part, a hot and cold water part and an air processing part and mainly comprises a hot and cold water machine set, a cooling tower, a dilute solution reservoir, a concentrated solution reservoir, a solution regenerator, a solar thermal collector, a dehumidifier, a superheater and a surface air cooler. When the heating mode is run in winter, the air source is taken as the heat quantity source of the heat pump on the basis of the solution, thereby thoroughly solving the frosting problem when the heating mode of the prior air source heat pump runs in winter, improving the performance coefficient of the heat pump; meanwhile, the solar energy is taken as the heat quantity source of the heat pump system, thereby realizing the solar energy storage on the basis of the solution and solving the unstable problem of the solar energy.

An air conditioner (10) includes a refrigerant circuit (20) including a plurality of indoor heat exchangers (27). A controller (1) for controlling operation of the air conditioner (10) includes a change unit (5) configured to change a set temperature Tem to a value larger than a current value when the minimum target superheat degree SHsm of target superheat degrees SHs determined for the respective indoor heat exchangers (27) is higher than a predetermined value SHt.

The invention provides an automatic parking system and method and a vehicle. The automatic parking system includes an environmental information acquisition module, a parking control module, a model correction module and a vehicle control module, wherein the environmental information acquisition module is used for collecting distance data and image information between the vehicle and surrounding obstacles; the parking control module is used for receiving the distance data and image information and establishing a parking environment model to determine a parking space and a parking path; the model correction module is used for receiving an correction instruction of a driver to the parking environment model to establish a new parking environment model to redefine the parking path, and the parking control module issues control instruction according to the redefined parking path; and the vehicle control module receives and executes the control instruction issued by the parking control module, and controls the vehicle to be parked according to the redefined parking path. According to the automatic parking system, the driver updates the parking environment model through the model correction module, so that the accuracy of obstacle type identification and the success rate of automatic parking are improved, and the risk of vehicle scratch is reduced.