電熱管表面負荷功率計算

電熱管表面負荷功率計算 電熱管表面負荷功率建議值（管發熱區表面積單位功率） 以下表面負荷泛指配合金屬模具加熱、水加熱可以乘以2～2.5?？諝饧訜釀t為50%～60%。 管徑 負荷值（Wcm平方）φ6～φ10 ≤22 φ10.1 ～φ14 ≤20 φ14.1～φ18 ≤16 φ18.1～φ22 ≤12 φ22.1～φ40 ≤10 應該用電壓的平方除以電阻,就是380*380/R 電阻R用萬用表測量(電流不好測量) 如果測出尺寸的話再算一下表面積用功率除以表面積就是功率密度 一般國內電熱棒的功率密度能做到12w/立方厘米 電熱元件(電熱絲,加熱板等)額定功率計算公式 1，當工作電壓（220V）的3倍時，則電熱元件必須采用星形連接。 2，當電源線電壓等于電熱原件的工作電壓（380V）時，則電熱元件必須采用三角形連接， 各相電熱元件在對稱負載情況下的常用連接方式的功率計算公式見表，常用連接方式見圖。 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.