Power work, it must be generated from time to time.However, it is a great heat and a large, big, big, big, and big, so that it is too much calorie, and it is a condition to dissipate the dispersing device to the media and media.Essence
concept
1. Component DIN Rail Enclosure Fan Heater knot temperature: that is, the highest temperature limit.This is provided by the manufacturer, or provided
2 P: P: P: P: The power consumption consumption of components at work, definition, definition consumption consumption consumption consumption and consumption of valid validity value output current and valid validity value.Essence
3, Q: specific heat dissipation.EssenceEssenceEssence
4. R: When the calories are between, the unit is always
First, the radiator option
The purpose of the purpose of the TA for purpose The purpose Objective Objective Objective to use the heat loss of the component to effectively and effectively transmit it to the surrounding environment and the environment = (tj-ta) R
① (of course, in addition to the circulation of the heat, the external guide is also discussed and discussed, discussion, discussion, discussion, and discussion.
RJC: The heat resistance RCS from the node to the shell shell is the heat resistance; RSA: RSA: the radiator radiator radiator radiator to air heat resistance. Among them, the process technology of RJC and the component of the component Give it to the level.
RCS and tube shells (usually usually usually usually usually, usually commonly related related correlated related correlated related correlated related correlated related correlation … (Reference reference: Guangzhou Jingtai Electronic Technology finite elements, cold installation, installation, installation, installation, installation, and air. Comprehensive ① and harmony ②②②②②, RSA <[(TJ-TA)/P] -rjc-RCS
③ The basic principles of the upper formula is the radiator.
Generally, the radiator provides the shape characteristic characteristic curve of the radiator material. , ,,,
The basic principles of selecting the heatware
1 Basic basis for selection of radiator
The power semiconductor radiator should comprehensively based on the power, the heat resistance of the device, the heat resistance of the contact, the heat resistance, and the coming
2 Device and tight force requirements
You must contact some contact with the post -contact contact contact installation power or installation torque installation torque installation torque installation torque installation torque. Installation installation power Instal power contact contact contact contact contact contact contact contact contact contact installation power.
3 Conditions of radiator
From: The environment and the environment are not higher than higher than higher than higher than C.
Wind and cold: import temperature is not higher than higher than higher than higher than higher than higher than higher than higher than higher, 6m/s.
Water cooling radiator: 35 ° C, water flow temperature temperature temperature temperature temperature temperature is not higher than higher than higher
4 Choose the radiator to consider
Select the scope of the heat dissipation capacity of the heat sink, the characteristics of the characteristics of the characteristics characteristics characteristics, characteristics characteristics, characteristics characteristics, characteristics of the characteristics of the structure structure and the structure of the structure of the structure of the structure and the harmony, harmony, and a kind of type of device, device, device, only parameter parameters Parameter parameter parameter parameter parameter Parameter Considering economics. Essence
The general method of selecting a radiator
The user corresponds to the conditions and conditions of the device during the working conditions, stable, stable load, appropriate situation, appropriate situation, appropriate coefficient, according to coefficients, according to coefficients
1 According to the circuit work current waveform waveform -shaped guide angle, determine the average average current current current current current current of the guidance angle guidance angle,
I ms? I? I f F waveform
2 I 180 ° Drive the angle of IAV1, and the device wave current, determine the surge current
TC temperature allows the temperature of the tube shell temperature temperature temperature to be related to the curve curve curve curve of the curve curve, and the relationship between the relationship
TC = = JM -JCPAV
JM is allowed to work, 150 ° C, 125 ° C, 115 ° C, 115 ° C
JC is a device. Essence
PAV’s power calculation formula:
PAV = 0.785VTM? IAV1 + 0.215VTO? IAV1 or
pav = vto? IAV1 + 2.47 RT? IAV1
VTM is the peak pressure drop at the device.
VTO ??is the parameter parameter of the voltage device: neat: rectifier flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipes Strategy flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipes of the flow pipe flow pipe flow pipe flow pipe flow pipe flow pipe flow pipes
RT is device-. .. ..
4 Calculating the maximum allowed radiator radiator Counterfeit temperature
TS = TC-R-CS? pav
RCS is contact, and the bolt -shaped device can be desirable or effective, 1/3RJC, 1/5 RJC.
5 by the resistance value of the calculation heat
RSA = (TA (T)/PAV
TA is temperature, 40 ° C, 35 ° C.
6 When the dispersion conditions are always the same or less than the same or less than less than the same or less than the flow of the amount of calculation, the heat resistance data manual is always determined.
Principles and principles of high -power crystal tube radiator
Fourth use of the series of heatware should be precautions matters
The principles of the general principle above leave the balance in the design. Essence Because the accuracy of the provision of data is provided, the installation status of components to the radiator radiator, distribution, etc., are idealized, should be given, should be given. Essence Essence
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At 1 o’clock, when the radiator should be used along the air flow direction heat, then the cold, then cold, cold, self -cold, and the heat dissolution of the radiator and the load capacity of wind speed wind speed wind speed.
2 The water -cooled dispersing should request the requirements requirements requirements, 5kW.5kW, pH value value 2 is lower than the request requirements requirements requirements requirements requirements requirements adjustable thermostat requirements requirements requirements requirements requirements requirements requirements requirements requirements requirements requirements requirements requirements requirements Requirement Requires.