37results about How to "Optimize Energy Efficiency Ratio" patented technology

The invention discloses a pure electric automobile as well as a control method and a control device for a cooling system thereof. The control method for a cooling system comprises the following stepsof carrying out heat production analysis on each heat source in at least one heat source in an automobile so as to obtain the temperature of each heat source at a future preset time; obtaining the current outdoor environment temperature and the current automobile speed of the automobile and obtaining a plurality of cooling capacity values of the cooling system at different states from a preset cooling capacity table according to the current outdoor environment temperature and the current automobile speed; and controlling the cooling system according to the plurality of cooling capacity valuesand the temperature of each heat source at the future preset time. And therefore, the energy efficiency ratio of the cooling system of the pure electric automobile can be optimized to achieve active energy saving so that a purpose of increasing the endurance mileage of the electric automobile is achieved.

Provided is a control method for an electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; retrieving a target exhaust temperature according to the real-time running frequency in a preset relation in which each available target exhaust temperature is paired with a single real-time running frequency, wherein the target exhaust temperature retrieved being defined as a first target exhaust temperature; defining a sum of the first target exhaust temperature and a set compensation temperature as a second target exhaust temperature, wherein the set compensation temperature is determined by the real-time outdoor environment temperature ; and performing a PID control on opening amount of the electronic expansion valve based on a deviation that is a difference between the real-time exhaust temperature and the second target exhaust temperature . The method achieves an accurate and stable control on opening amount of electronic expansion valve in air conditioner.

The invention discloses an air conditioner control method. The method comprises the following steps that current working condition parameters of an air conditioner are obtained, wherein the current working condition parameters include the current environment parameter and the current set parameter of the air conditioner; target operating parameters are obtained according to a plurality of historical operating parameters corresponding to the current working condition parameters and a first energy efficiency ratio corresponding to the multiple historical operating parameters; and the air conditioner is controlled to operate at the target operating parameters. The invention further discloses the air conditioner and a computer readable storage medium. By means of the air conditioner control method, the air conditioner and the storage medium, the energy efficiency ratio of the air conditioner can be optimized.

The invention discloses a rock breaking method. The rock breaking method comprises the following steps that A, a rock breaking machine arranged in a rock breaking operation zone is driven or moved to a zone to be subjected to rock breaking, the rock breaking operation zone is made to be above the zone to be subjected, and the rock breaking operation zone of the rock breaking machine is a hollow zone which penetrates through a car body of the rock breaking machine and is perpendicular to the ground; B, a rock arm is operated, and a rock breaking part on the rock arm is controlled to act downwards in the rock breaking operation zone; and C, the rock breaking part of the rock arm breaks rocks in the rock breaking operation zone. The technical effects that the weight of the rock breaking machine can be fully utilized to improve the rock breaking effect of the rock arm in the rock breaking operation zone, and the rock arm is effectively made to conduct rock breaking operation around the gravity center and the nearest zone of the rock breaking machine; and meanwhile, on the premise that the rock breaking effect is ensured, arms with high weight do not need to be lifted, the energy loss of idle work can be reduced to minimum, and thus the rock breaking energy consumption is reduced.

Provided is a control method on electronic expansion valve in air conditioner, which comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; if the air conditioner working in cooling mode, using a first set rule or a second set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a first set outdoor environment temperature; if the air conditioner working in heating mode, using a first set rule or a third set rule to obtain an integral coefficient in which the selection is based on the comparison of the real-time outdoor environment temperature and a second set outdoor environment temperature; performing a PID control on the electronic expansion valve by using an error of the difference between real-time exhaust temperature and a set target exhaust temperature. The method realizes an accurate and stable control on opening amount of electronic expansion valve in air conditioner.

The invention relates to an energy-saving machine room air conditioning system and a running method thereof. The energy-saving machine room air conditioning system comprises a first circulation loop for refrigerating; the first circulation loop comprises a pump, a liquid storage tank, a condenser, a compressor, an evaporator and an expansion valve which are sequentially connected in series, a first one-way valve is connected to the two ends of the pump in parallel, and a second one-way valve is connected to the two ends of the compressor in parallel; the energy-saving machine room air conditioning system further comprises a second circulation loop used for pre-lowering the inflow air temperature of the condenser, and the second circulation loop lowers the inflow air temperature of the condenser through a natural cold source. According to the system, the circulation system capable of achieving precooling through the natural cold source is additionally arranged, therefore, the inflow air temperature of the condenser in the energy-saving machine room air conditioning system is lowered, the annual working time of the pump in the first circulation system for refrigerating in an air conditioner is prolonged, the time for achieving refrigerating through cold energy of the outdoor natural cold source is prolonged, and then the annual energy efficiency ratio of the energy-saving machine room air conditioning system is increased.

The invention provides an air conditioner heat exchange system comprising an efficient condenser and a tubular heat exchanger. The efficient condenser integrates condensation and supercooling. Gas from the tubular heat exchanger to an evaporator and liquid from the condenser are subjected to heat exchanging, heat of refrigerating medium from the condenser and heat of refrigerating medium from the evaporator are efficiently utilized, and efficiency of the system is improved; meanwhile, a supercooling zone and a condensation zone in the condenser are communicated with a guide plate, and the structure is compact; the sectional area of a guide channel and open area of guide connectors at two ends of the guide channel are approximately equal, and accordingly the refrigerating medium flows at the guide plate at stable speed and heat exchanging efficiency is greatly improved.

Provided is a control method on electronic expansion valve in air conditioner comprises: obtaining a real-time running frequency of compressor, a real-time exhaust temperature and a real-time outdoor environment temperature as the compressor running; comparing the real-time running frequency of compressor with a first set frequency; if the real-time running frequency is greater than or equal to the first set frequency, obtaining an integral coefficient of the PID algorithm according to a first set rule; if the real-time running frequency is less than the first set frequency, obtaining an integral coefficient of the PID algorithm according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a second set rule, or according to the comparison of the real-time outdoor environment temperature and the first set outdoor environment temperature and a third set rule, wherein the selection is based on whether the air conditioner is working in cooling mode or in heating mode; performing a PID control on the electronic expansion valve by an error of the difference between real-time exhaust temperature and a set target exhaust temperature. The method realizes an accurate and stable control on electronic expansion valve opening amount.

The invention relates to the technical field of adjusting valves, and discloses a control method and device for a heat pump system electronic expansion valve. The control method comprises the steps that the target overheat degree, the fixed parameter value X and the adjusting periods t are set; overheat degree data collection is conducted, at least two overheat degree data are collected in the current adjusting period, and buffering time for a system to respond is reserved in the front section of each adjusting period; the overheat degree deviation delta T is calculated and is equal to the difference of the current overheat degree and the target overheat degree; the aperture of the electronic expansion valve is adjusted according to the delta T and the fixed parameter value X; and the second step is repeatedly executed, and circulation is conducted. According to the control method and device, through setting of the adjusting periods, the buffering time for the system to adjust and respond is arranged in the front section of each adjusting period, and the adjusting lagging performance of the system is sufficiently considered; and t serves as the adjusting periods, the aperture of the electronic expansion valve is adjusted by calculating the overheat degree deviation and the set fixed parameter value X, and the adjusting precision is high.

The embodiment of the invention discloses a method and device for reducing network-on-chip power consumption, a CPU chip and a server, relates to the technical field of computers, and can effectivelyreduce the network-on-chip power consumption. The method comprises the following steps: dividing a network-on-chip (NoC) into more than two regions which are not overlapped with each other, wherein each region uses an independent working clock; acquiring working state data of a routing unit RU of the NoC; calculating the expected working frequency of each region of the NoC according to the workingstate data; and adjusting the working frequency of each region of the NoC to the expected working frequency. The invention is suitable for occasions of reducing network-on-chip power consumption.

The invention discloses an air-conditioning system waste heat recovery method, which comprises the following steps: gaseous-state refrigerant delivered by a compressor is liquefied through heat release in a condensing device; liquid-state refrigerant in the condensing device is delivered to an evaporator through a recovery device; and the gaseous-state refrigerant treated by the evaporator is delivered back to the compressor through the recovery device, wherein heat exchange between the liquid-state refrigerant and the gaseous-state refrigerant is carried out in the recovery device. The invention also discloses a system used for the method, which comprises the compressor, the condensing device, the evaporator and the recovery device for carrying out heat exchange between the liquid-state refrigerant from the condensing device and the gaseous-state refrigerant from the evaporator. The heat exchange steps of the liquid-state refrigerant and the gaseous-state refrigerant in the recovery device and the recovery device are adopted to make the heat of the refrigerant of the air-conditioning system be utilized reasonably, the energy efficiency ratio of the air-conditioning system is improved, and the purpose of energy saving and consumption reduction is achieved.

The invention provides an air-conditioning heat exchange system comprising a high-efficiency evaporator, a high-efficiency condenser and a tubular heat exchanger, wherein high-efficiency condenser realizes integrated condensation and supercooling, the high-efficiency evaporator realizes integrated evaporation and overheating, and the tubular heat exchanger is employed to exchange heat with a gas coming out of the evaporator and a liquid from the condenser, and therefore, the heat of a refrigerating medium out of the condenser and the heat of a refrigerating medium out of the evaporator are utilized effectively and the efficiency of the system is improved; in the meantime, the overheating region and the evaporator region of the evaporator are communicated with each other through an overheating guide plate; the air-conditioning heat exchange system is simple in structure, and the sectional area of an overheating flow guide groove is approximately equal to the open area of overheating flow guide connectors at both ends so that the flow velocity of the refrigerating medium is stabilized at the guide plate, and as a result, the heat exchange efficiency is greatly improved.

The embodiment of the invention discloses a method and device for reducing network-on-chip power consumption, a CPU chip and a server, relates to the technical field of computers, and can effectivelyreduce the network-on-chip power consumption. The method comprises the following steps: acquiring working state data of a network-on-chip (NoC), wherein the working state data comprises one or more ofthe number of non-responsive requests initiated by equipment in an NIU in a period of time window, the number of requests and responses cached in an RU in a period of time window, and NoC historicalbandwidth statistical data; calculating the expected working frequency of the NoC according to the working state data; and adjusting the working frequency of the NoC according to the expected workingfrequency. The method is suitable for occasions of reducing network-on-chip power consumption.