| 模温机选型的计算方法 |
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| 1.特殊的情况需进行计算： |
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| A、求加热器功率或冷冻功率 KW＝W×△t×C×S/860×T |
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| W=模具重量或冷却水 KG |
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| t=所需温度和起始温度之间的温差。 |
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| C= 比热 油（0.5），钢（0.11），水（1），塑料（0.45~0.55） |
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| B、求泵的大小 |
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| 需了解客户所需泵浦流量和压力（扬程） |
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| P（压力Kg/cm2）=0.1×H（扬程M）×α（传热媒体比重，水=1，油=0.7-0.9） |
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| L（媒体所需流量L/min）=Q（模具所需热量Kcal/H）/C（媒体比热水=1 油=0.45）×t（循环媒体进出模具的温差）×α×60 |
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| 2.冷冻机容量选择 |
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| A、Q（冷冻量Kcal/H）=Q1+Q2 |
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| Q1（原料带入模具的热量Kcal/H）=W（每小时射入模具中原料的重量KG）×C×（T1-T2）×S（安全系数1.5~2） |
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| T1 原料在料管中的温度；T2 成品取出模具时的温度 |
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| Q2 热浇道所产生的热量Kcal/H |
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| B、速算法（有热浇道不适用） |
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| 1RT=7~8 OZ 1OZ=28.3g（含安全系数） |
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| 1RT=3024Kcal/H=12000BTU/H=3.751KW |
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| 1KW=860 Kcal/H 1 Kcal=3.97BTU |
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| 3、冷却水塔选用=A+B |
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| A、射出成型机用 |
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| 冷却水塔RT=射出机马力（HP）×0.75KW×860Kcal×0.4÷3024 |
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| B、冷冻机用 |
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| 冷却水塔RT=冷冻机冷吨（HP）×1.25 |
