Design of an air cooler (urgent)
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There is currently a heat exchanger with a single tube side, using light oil + water (gas) as the working fluid. The inlet temperature is 120 degrees, the outlet temperature is 45 degrees, and the flow rate is 9000 KG/H. The ratio of oil to water is 8:1. Two motors of 18.5 KW each are used, the air flow rate is 160,000 m³/h, and the total pressure is 245 Pa. The area of each unit I selected is 250 square meters, with a fin ratio of 10. Is it feasible to use a single tube side in this case? Urgent! Could you all help me do the calculations? This post was last edited by ddjlw on 2009-3-30 at 15:59.]
How can it be calculated without physical property data? LMS also involves the issue of gas-liquid phases
The commonly used fin ratio in our country is 23.4 for high fins and 17.1 for low fins. Is the value of 10 you mentioned determined by yourself or is it a value recommended by the manufacturer?
It is required by the manufacturer; it’s specified in the drawings