![HVAC Rule of Thumb Calculator | HVAC and Refrigeration Design Tools | Mechanical and Electrical PE Sample Exams, Technical Study Guides and Tools HVAC Rule of Thumb Calculator | HVAC and Refrigeration Design Tools | Mechanical and Electrical PE Sample Exams, Technical Study Guides and Tools](https://www.engproguides.com/images/hvacruleofthumbcalculator-40.jpg)
HVAC Rule of Thumb Calculator | HVAC and Refrigeration Design Tools | Mechanical and Electrical PE Sample Exams, Technical Study Guides and Tools
![1 tonne of refrigeration = 3.51KW proof | unit of refrigeration proof 1 TR =3.51 KW = 210 KJ/min - YouTube 1 tonne of refrigeration = 3.51KW proof | unit of refrigeration proof 1 TR =3.51 KW = 210 KJ/min - YouTube](https://i.ytimg.com/vi/NDLwzY5LmQI/maxresdefault.jpg)
1 tonne of refrigeration = 3.51KW proof | unit of refrigeration proof 1 TR =3.51 KW = 210 KJ/min - YouTube
![HVAC Rule of Thumb Calculator | HVAC and Refrigeration Design Tools | Mechanical and Electrical PE Sample Exams, Technical Study Guides and Tools HVAC Rule of Thumb Calculator | HVAC and Refrigeration Design Tools | Mechanical and Electrical PE Sample Exams, Technical Study Guides and Tools](https://www.engproguides.com/images/hvacruleofthumbcalculator-29.jpg)