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电热管表面负荷功率计算

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电热管表面负荷功率计算 电热管表面负荷功率建议值(管发热区表面积单位功率) 以下表面负荷泛指配合金属模具加热、水加热可以乘以2~2.5。空气加热则为50%~60%。 管径 负荷值(Wcm平方)φ6~φ10 ≤22 φ10.1 ~φ14 ≤20 φ14.1~φ18 ≤16 φ18.1~φ22 ≤12 φ22.1~φ40 ≤10 应该用电压的平方除以电阻,就是380*380/R 电阻R用万用表测量(电流不好测量) 如果测出尺寸的话再算一下表面积用功率除以表面积就是功率密度 一般国内电热棒的功率密度能做到12w/立方厘米 电热元件(电热丝,加热板等)额定功率计算公式 1,当工作电压(220V)的3倍时,则电热元件必须采用星形连接。 2,当电源线电压等于电热原件的工作电压(380V)时,则电热元件必须采用三角形连接, 各相电热元件在对称负载情况下的常用连接方式的功率计算公式见表,常用连接方式见图。 The surface load power electric heating tube surface load power calculations suggested values (tube heating area table unit power area) the following surface load refers to with the metal mold heating, water heating can be multiplied by 2 to 2.5. Air heating is 50% ~ 60%. Diameter of load value (Wcm Square) dia 6 to 10 ≤ 22 dia 10.1 to 14 ≤ 20 dia 14.1 to 18 ≤ 16 dia 18.1 to 22 ≤ 12 dia 22.1 to 40 ≤ 10 should use square divided by the resistor voltage, is with a multimeter measuring 380*380\/R resistance R (current bad measurement if the measured size) and then calculate the surface area with power divided by the apparent power density is power density generally domestic electric rods can do 12w\/ cubic centimeter (electric heating wire heating elements, heating plate) rated power formula 1, when the operating voltage (220V) of 3 times, the electric heating elements must be used star connection. 2, when the operating voltage power line voltage is equal to the electric heating element (380V), the electric heating element must be connected with triangles, each heating element in a symmetrical load case of common connection power formula table, common connection figure.

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