Dear All,
Does anyone know how to set up the immersed heat exchanger so that its heat transfer capacity can be increased?
My current setting is:
Exchanger type horizontal tube bank
Fluid 20% Ethylene Glycol solution
Multiplier for Natural Convection Correlation 0.6
Exponent for Rayleigh Number 0.25
Geometry Factor 1
Geometry Factor Exponent 0
Tube lnner Diameter 0.098 m
Tube Outer Diameter 0.105 m
wall Conductivity 1440 kJ/h m K
Tube Length 30 m
Number of Tubes 1
Header volume 0.0226 m3
Cross Sectional Area 0.0075 m2
This setting will make it difficult for the cold energy of the fluid in the exchanger to be transferred to the water tank.
When the temperature difference between the fluid in the exchanger and the water outside is 5 °C, the temperature of the fluid flowing into the exchanger will only increase by 0.13 °C after it flows out.
So how should I change the above parameters to make the heat transfer ability of this exchanger stronger?