choosing and calculating methods |
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1.The heat of cutting and grinding fluid system is usually calculated as below . Choose the right oil chiller by experiment. |
| 2.Calculating formula: |
| Q=Q1+Q2+Q3 |
Q：mechanical system total heat
Q1：mechanical system machining heat
Q2：the heat of cooling system circulation pump
Q2＝output power of pump motor×n( n=50%, generally)
Q3：the oil tank heat transferred by the difference of its oil fluid temperature and ambient temperature.
Q3＝a*A*AT
a：surface heat transferring coefficient, usually is 11.6-23.2
A：the area of oil holding surface of oil tank
AT：the difference of ambient temperature and oil tank temperature |
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如上图计算方法 |
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计算公式：Q＝Q1+Q2+Q3 |
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Q1 |
＝1500W |
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Q2 |
＝(1500+1500+2200)*50％） |
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Q3 |
＝20*3.8*(35-28)＝532W |
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Q |
＝1500+2600+532 |
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＝4632（W）＝3984（Kcal/h） （1W＝0.86Kcal/h） |
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