3.23 Design of Tank with Tubes
Dissipating surface area of tank =St
Dissipating surface area of tubes = xSt
Total loss dissipation in surface area of tank =12.5 StW/°C
Total loss dissipation in surface area of and cooling tubes =(12.5+8.8 x)St W/°C
Total loss dissipition by tubes due to convection =1.35 × 6.5 xSt
= 8.8xSt W/°C
Total surface area of walls of tank and tubes = St + xSt
= (1 + x) St
Temperature rice with tubes,
From the above equation, area of tubes can be found as follows.
Total area of tubes,
Length of a tube = lt