355results about How to "Reduce cooling capacity" patented technology

A small water-cooling type electronic component cooling apparatus is provided. The electronic component cooling apparatus comprises a so-called water-cooling heat sink 3 , a radiator 7 cooled by an electric fan 5 , first and second coolant paths 9, 11 for circulating a coolant between the heat sink 3 and the radiator 7 , and an electric pump 13 to supply a moving energy to the coolant. The electric pump 13 is arranged at a position facing the heat-radiating portion of the radiator 7.

In an exhaust-gas recirculation system of an internal combustion engine with an exhaust-gas recirculation line extending between an exhaust duct and an inlet duct, wherein the exhaust-gas recirculation line includes an exhaust-gas recirculation valve and also at least one first exhaust-gas cooler, at least one second exhaust-gas cooler is provided in the exhaust gas recirculation line and the exhaust-gas recirculation valve is arranged between the first exhaust-gas cooler and the second exhaust-gas cooler so that only the first exhaust gas cooler is subjected to the high exhaust gas pressure effective during engine braking when the exhaust gas recirculation valve is closed.

The invention provides a control method for a vertical air conditioner. An indoor unit of the vertical air conditioner comprises an upper evaporator, an upper draught fan and at least one upper air supply port which are matched and further comprises a lower evaporator, a lower draught fan and at least one lower air supply port which are matched. The control method comprises the following steps that the indoor environment temperature Ta is detected; if Ta is higher than the preset refrigeration comfortable temperature zone in the refrigeration mode or is lower than the preset heating comfortable temperature zone in the heating mode, the upper draught fan and the lower draught fan run at the high rotating speed; if Ta is located in the refrigerating comfortable temperature zone in the refrigerating mode or is in the heating comfortable temperature zone in the heating mode, the upper draught fan runs at the high rotating speed, and the lower draught fan runs at the low rotating speed; and if Ta is lower than the refrigerating comfortable temperature zone in the refrigerating mode or is higher than the heating comfortable temperature zone in the heating mode, the upper draught fan runs at the low rotating speed, and the lower draught fan shuts down. According to the control method, air supply is more intelligent, air supply and soft air supply can be achieved according to needs, and the comfort degree of users is improved.

The invention provides an air renewal system of a central air-conditioner and an operating method of the air renewal system which can automatically control induction ratio of outdoor new wind according to the indoor temperature, the indoor humidity and the indoor personnel density, and therefore the energy-saving purpose by means of the energy of the outdoor new wind is achieved. A controller of the air renewal system of the central air-conditioner calculates the value of enthalpy of the indoor air and the outdoor air by means of information of an indoor temperature sensor, an indoor humidity sensor, an outdoor temperature sensor and an indoor humidity sensor, obtains the concentration of carbon dioxide of the indoor air from a carbon dioxide concentration sensor, and controls the opening degree of a return air valve, an exhaust valve, a mixed air valve, a blow valve according to the operating mode of the air conditioner, the comparison of the enthalpy value of the indoor air and the enthalpy value of the outdoor air, the temperature of the indoor air, the temperature of the outdoor air and the concentration of the carbon dioxide of the indoor air. The air renewal system of the central air-conditioner and the operation method of the air renewal system of the central air-conditioner utilize outdoor fresh air as much as possible to assist in improving the comfortable degree of the human body, reduce refrigeration power consumption or heating power consumption of the air conditioner unit, and achieve the purpose of energy conservation.

The invention provides an air-conditioner control system and a control method thereof; the air-conditioner comprises a low output running mode with relatively low output energy and a high output running mode with relatively high output energy; the air conditioner can be mutually switched between two running modes, and the control system comprises a detecting unit, a judging unit, and a control unit. The detecting unit is used for detecting an inner ring of indoor environment temperature T; the judging unit is used for calculating the inner ring-T setting I of delta T=IT, and judging if delta T is not more than T1, wherein T is set as the indoor setting temperature of the air conditioner, T 1 is setting value and any positive number; the control unit can run the air condition in low output running mode or high output running mode according to the judging result of the judging unit. Through the invention, the room temperature can slowly change when closing to the T setting scale, prevent exceeding the setting temperature for too fast drop or rise of room temperature, avoid frequent startup of compressor, effectively prevent fluctuation of indoor environment temperature, and improve the comfort level of the indoor environment.

An apparatus, a method and a computer system can be used to reduce power consumption of one or more processors in response to a failure condition such as an overtemperature condition affecting the processor or processors. A signal is provided which indicates a failure condition affecting the processor such as an overtemperature condition or a failure or reduction in performance of a cooling mechanism. In response to the signal, a power consumption of the processor is periodically reduced. This can be accomplished by providing a periodic signal to an input of the processor (e.g., a stop clock input or a processor enable input). The processor reduces power consumption by stopping an internal clock of the processor, for example. The periodic signal can be provided to the input of the processor to periodically reduce power consumption. In this manner, power consumption of the processor may be reduced without shutting down the processor entirely, while maintaining some processor functions and without missing the receipt of any signals corresponding to vital functions of the processor system while the power consumption of the processor is reduced.

An air conditioner for an automotive vehicle having a water-cooling type internal combustion engine includes: a first refrigerator; and an adsorption type refrigerator having adsorbent. The first refrigerator controls temperature of air to be blown into a passenger compartment of the vehicle. The adsorbent generates adsorption heat when the adsorbent adsorbs the medium, and desorbs the adsorbed medium when the adsorbent is heated by coolant water in the internal combustion engine. The air to be blown into the passenger compartment is heated by the adsorption heat of the adsorbent, and is cooled by evaporation latent heat of the medium.

A solid condition kHz pico-second laser burst regenerative amplifier belongs to a omni-solid condition regenerative amplifier, which is characterized in that: the two lumen mirror of the magnifying resonant cavity are consisted of an average lumen formed by a first omni-opposite lumen mirror (7) and a second omni-opposite lumen mirror (14), the inner of the resonant cavity is arranged with a minus lens (12) and a second lambada/4wave plate (13) arranged between the laser crystal (9) which is a Nd:YAG bar and the second omni-opposite lumen mirror. The fast axis of the wave plate is parallel with the light vector of the inputting linearly-polarized light. The minus lens is arranged between the laser crystal and the second lambada/4 wave plate or the second lambada/4 wave plate and the second omni-opposite lumen mirror. The pump source is a continuously worked semiconductor laser diode array (10) and the working frequency is 1kHz. The laser crystal can also be a Nd:YLF bar, here the second lambada/4 wave plate is needless. The invention reduces the volume and the costs of the system, effectively solves the problem of Nd:YAD regenerative amplifier domino offect, and effectively ensures the magnification and the beam quality.

The invention provides a refrigeration control method used for an air-conditioner. The method includes the steps that the outdoor environment temperature is detected; the opening degree of a plurality of preinstalled expansion valves corresponding to a plurality of outdoor environment temperature ranges one by one is set; the opening degree of the expansion valves of the air-conditioner is adjusted according to the outdoor environment temperature and the outdoor environment temperature ranges. Correspondingly, the invention further provides a refrigeration control system and the air-conditioner. According to the technical scheme, the opening degree of the expansion valves can be increased in time when the outdoor environment temperature is excessively low, so that the pressure of a condenser is improved, and the refrigerating capacity of the air-conditioner can be prevented from being lowered substantially.

The invention relates to a total heat exchanger which comprises an indoor air inlet, an indoor fresh air outlet arranged at the front side of the housing, and an outdoor fresh air inlet and an outdoor air outlet arranged at the back side of the housing in the mode of correspondence with each other; and the housing is provided with a separating plate corresponding to the two air inlets and two air outlets, such that the interior of the housing is divided into a left heat exchange cavity and a right air exhaust cavity. The heat exchange cavity is communicated with the indoor air inlet and the outdoor fresh air inlet respectively; and the heat exchange cavity is internally provided with one or more groups of heat exchange cores. The side of the heat exchange cores corresponding to the air exhaust cavity is provided with a vertical or oblique air effluent face or an acute-angle-shaped or circular-arc-shaped air effluent face. The separating plate is at least divided into three layers of upper, medium and lower layers, and an air vent is formed between each layer of the separating plate, such that the heat exchange cavity and the air exhaust cavity are communicated with each other. The total heat exchanger provided by the invention has the characteristics of simple design, rational structure, good heat exchange effect, high air interchange efficiency, low noises and the like.

An exhaust gas recirculation passage connects an exhaust passage with an intake passage. A cooling device is mounted to the exhaust gas recirculation passage for cooling exhaust gas in the exhaust gas recirculation passage. An EGR valve adjusts a flow passage area of the exhaust gas recirculation passage. An exhaust gas quantity (EGR quantity) in the exhaust gas recirculation passage is feedback-controlled by manipulating an opening degree of the EGR valve based on a measurement value of an airflow meter. Existence or nonexistence of an abnormality in the cooling device is diagnosed based on whether a measurement value of the opening degree of the EGR valve contains a component corresponding to compensation for reduction of the EGR quantity due to degradation of cooling performance of the cooling device.

A method and system for stabilizing flow includes introducing a flow into a channel with a minimum cross-sectional dimension of less than three millimeters and triggering a release of one or more bubbles in the flow at one or more locations in the channel. The one or more locations are spaced in from an inlet and an outlet to the channel.

The invention provides a vehicle-mounted battery pack heat management system which comprises a battery heat exchange system and an air-conditioner heat exchange system, wherein the battery heat exchange system comprises a circulating pump, a heat exchanger and a battery pack; the battery pack, the circulating pump and the heat exchanger are connected through a circulating pipeline containing a heat exchange liquid inside; a switch valve is arranged between the circulating pump and the heat exchanger; and the air-conditioner heat exchange system comprises a compressor, a radiator A and a radiator B which are connected through a circulating pipeline containing an air conditioner cooling medium inside. The vehicle-mounted battery pack heat management system is formed only by modifying an original air conditioner system, so that the vehicle-mounted battery pack heat management system is simple in structure and convenient to implement; and when the heating capacity of the battery pack is not strong, the vehicle-mounted battery pack heat management system can satisfy the radiation demand of the battery pack only by utilizing the original components in the air conditioner, thereby lowering the energy consumption and protecting the environment.

The invention discloses an energy-saving air conditioning unit having an automatic heat recovery controlling function. The energy-saving air conditioning unit solves the problems that existing constant-temperature constant-humidity air conditioning units are high in usage cost and wasteful in energy after being used. The air conditioning unit comprises a refrigerating unit, the refrigerating unit is composed of a compressor, a condenser, a liquid storage pot, a drying and filtering device, an expansion valve and an evaporator which are connected through conveying pipelines sequentially, the evaporator is in back connection with the compressor, and simultaneously, the air conditioning unit is provided with a reheating unit which is in parallel connection with the pipeline between the compressor and the condenser. The air conditioning unit is simple in structure and convenient to use, the power of electrical heating is cancelled due to the application of the technology, the heat which is to be dissipated outdoors is directly led into a room, the requirements of the room for the temperature and the humidity are met, the electrical load is reduced, and energy conservation is achieved, so that the air conditioning unit has high practical values and promoting values.

A piston (10) for an internal combustion engine including: a piston head (11) located at an uppermost section of the piston; a land (12) located on a circumference of the piston head (11); a skirt (13) located below the land (12); and a pair of pin bosses (14) located on the lower section of the piston head (11). The piston head (11) has a first cavity (24) on the bottom of the piston bead (11). Each of the pair of pin bosses (14) has a second cavity (20) in an outer upper section of the pin boss (14). The pin boss (14) has a through hole (21) that communicably connects the first cavity (24) with the second cavity (20).

When a fuel cell system is to be stopped, a controller 3 decreases the coolant flowrate to a fuel cell 1, decreases the cooling performance of the fuel cell 1 and continues operation of the fuel cell 1, and performs a temperature rise operation wherein the temperature of the fuel cell 1 is increased using the heat generated by the electrochemical reaction in the fuel cell 1. After the temperature of the fuel cell 1 has reached a predetermined high temperature, the operation of the fuel cell 1 is stopped.

The disclosure relates to a compressor rotating speed control method and device, a storage medium and a vehicle-mounted air conditioner. The method comprises the following steps: controlling a compressor to operate at a first rotating speed so as to enable the vehicle-mounted air conditioner to start refrigerating; acquiring a real-time temperature value of an evaporator in the vehicle-mounted airconditioner; judging whether the real-time temperature value of the evaporator reaches a target temperature value of the evaporator; when the real-time temperature value of the evaporator is reducedto the target temperature value for the first time, reducing the rotating speed of the compressor from a first rotating speed to a second rotating speed. This way, when the temperature of the evaporator reaches the target temperature, the rotating speed of the compressor is reduced so that the temperature of the evaporator is not continuously reduced, and the temperature of the air outlet of the air conditioner is controlled to be not continuously reduced.

An outdoor unit for an air-conditioning apparatus includes: a compressor; an outdoor fan; a plurality of outdoor heat exchangers coupled to a plurality of indoor units; a switching member configured to switch functions of the outdoor heat exchangers to either condensers or evaporators by switching of coupling states between the compressor and the outdoor heat exchangers; and a control unit configured to calculate a low pressure saturation temperature during a cooling operation or a cooling-main operation, and configured to cause all of the plurality of outdoor heat exchangers to serve as condensers by controlling the switching member when a state in which an open-air temperature is lower than the low pressure saturation temperature continues for a predetermined time.

Disclosed is an apparatus for controlling a driving of a reciprocating compressor and a method thereof, in which a cooling capacity is decreased without a re-expansion loss by controlling a driving of a compressor used in a refrigerator by using a current offset when the cooling capacity of a refrigerator is varied. To this end, in the compressor which controls the cooling capacity by varying an inner stroke according to a stroke reference value set by a user, the apparatus comprises a storage unit for storing a current offset value corresponding to a cooling capacity variable amount; an adding unit for adding the current offset value to a current value applied to the compressor in accordance with that the cooling capacity is varied by a user; a microcomputer for generating a switching control signal corresponding to the current value added from the adding unit; and a power supply unit for controlling a driving of the compressor by applying the added current to the compressor under a dependent state on the switching control signal.

The invention provides a multifunctional ecological optimizing energy-saving coating and a preparation method thereof, belonging to the field of functional materials for wall bodies of buildings. The coating comprises deionized water, water-based fluorocarbon resin emulsion, core-shell structure elastic acrylic emulsion, various additives, 400-mesh sepiolite powder, nanometer materials, 800-mesh sericite powder, tinting pigment, and vacuum ceramic microspheres. The preparation method comprises steps of (1) adding additives like deionized water and propylene glycol into a reaction kettle, mixing uniformly, then adding various powdery materials, dispersing and grinding into particles with fineness less than 50mu m; and (2) mixing water-based fluorocarbon resin emulsion and core-shell structure elastic acrylic emulsion with ground pigment paste, then adding other additives and vacuum ceramic microspheres, mixing uniformly so as to obtain the coating. The coating is used for painting outer wall surfaces of buildings, and has functions of decoration, sound insulation, water proofing, pollution prevention, ecological environment optimizing, thermal insulation and the like.

An ECU calculates the thermal margins of the in-wheel motors, on the basis of the thermal capacities of the in-wheel motors, the allowable limit temperatures, and the motor temperatures. Next, the ECU distributes the total requested torque between the requested torques for each wheel using the percentages of the thermal margins. The ECU controls the operation of an inverter such that the in-wheel motors generate the requested torques for the wheels. Thus, the four in-wheel motors generate uniform amounts of heat.

An air conditioning refrigerating device comprises a high back pressure rotary compressor; an outlet of the high back pressure rotary compressor is connected with an inlet of a condenser; an outlet of the condenser is connected with a liquid inlet of a heat regenerator; the liquid outlet of the heat regenerator is connected with an inlet of a swelling valve; an outlet of the swelling valve is connected with an inlet of an evaporator; an outlet of the evaporator is connected with an air inlet of the heat regenerator; an air outlet of the heat regenerator is connected with an inlet of the high back pressure rotary compressor. According to the air conditioner refrigerating device, refrigerant firstly enters into the high back pressure rotary compressor, enters into the compressor after being compressed into high temperature high pressure air, then is condensed into intermediate temperature high temperature liquid and discharges heat to the air; the refrigerant then flows through the heat regenerator to enter into the swelling valve to be throttled to be in a low temperature low pressure air-liquid mixed state; then the refrigerant enters into the evaporator to change heat with the air in the environment to enable the air temperature to be reduced; accordingly the refrigerating effect is achieved. The air conditioner refrigerating device has the advantages of improving the compressor efficiency and a refrigeration coefficient of a refrigeration system and being good in lubricating oil return.

The invention discloses an air conditioner and a control method thereof. The air conditioner comprises a compressor, a reversing assembly, an indoor heat exchanger and an outdoor heat exchanger, wherein an exhaust port and a return air inlet are formed in the compressor; the reversing assembly is provided with a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is communicated with the exhaust port, and the fourth valve port is communicated with the return air inlet; the first end of the indoor heat exchanger is connected with the second valve port, and the second end of the indoor heat exchanger is connected with a throttling assembly with a throttling depressurization effect and adjustable opening degree; the outdoor heat exchanger comprises a plurality of heat exchange parts, the first end of each heat exchange part is connected with the third valve port, and the second end of each heat exchange part is connected with the throttling assembly; the two ends of at least one heat exchange part are respectively connected with control valves used for controlling the on-off of a refrigerant flow path in series. According to the air conditioner, the cryogenic refrigeration of the air conditioner can be realized, and the freezing of an indoor unit and the liquid return of the compressor caused by lower refrigerant temperature can be avoided.