thanx a lot for your answers , the PDF file in last post was also very helpful and i have got my answer ..may be will back with some other problem ..wish you all a marry christmas and happy new year...have a gud time
Cp value is 1.802 KJ/KgK at 20° C and 1.927 KJ/KgK at 40° C.
Density value 897 kg/m³ at 20° C and 879 Kg/m³ at 40° C
I have got some idea from above given solutions of you all. Thankyou for that. This is not a real life peoblem , which you said that have to consider pressure loss and heat...
but when i look at system ..19000 liters is total volume to be heated from 20 degrees to 40 degrees.
it flows through heat exchanger at 4800 liters per hour. and each time temp is increased by 35 degrees in this flow.
so virtually if 20 minutes it takes , then we can say that only 1600...
Thanks a lot .
I used the formula Q = m* Cp * delta T and calculated for every minute. but answer was a bit unbelievable as 20 minutes.
also i have a doubt to make it in a single step calculation as it is a iterative process and gradual increase in temp. will take place. so finding an...
I have problem in calculating heating time of Lube Oil ( SAE 40 ). There is a tank of Lube Oil ( SAE 40) of 19000 liters at 20° C. this oil has to be heated up from 20° C to 40° C with help of a heater of 85 kW through which oil flows at 4800 liter/hour and back to tank.
How much time it...
Homework Statement
I have problem in calculating heating time of Lube Oil ( SAE 40 ). There is a tank of Lube Oil ( SAE 40) of 19000 liters at 20° C. this oil has to be heated up from 20° C to 40° C with help of a heater of 85 kW through which oil flows at 4800 liter/hour and back to tank...