Multi_R_Designer Tutorial

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1) After completing Sub-problem 5.1, reduce the diagram window (Do not close it - it will be printed later) and return to the Query index.

2) In the Operating conditions tab, unselect the box corresponding to Liquid mass flow rate and Execute. The Search results list will increase to 81 data sets (N.B. it is not necessary to substitute 15000 +/- 20% for 'none' in the Value field).

3) In the Liquid tab, check the box corresponding to Liquid viscosity and enter the Value field  dialog window. With a min-max range of 2.1-37.0 lb/ft/hr, write 13 +/- 10% extension in the corresponding boxes. Press OK, then Execute. Nineteen (19) data sets are extracted.
 

4) Select the Plot button . In the Horizontal axis panel, choose Gas mass flow rate (Operating conditions: Gas mass flow rate). In the Vertical axis panel, choose Experimental (Heat transfer: Wall heat transfer coefficient: Experimental). In the Advanced panel, select Liquid mass flow rate (Operating conditions: Liquid mass flow rate) as the discriminate value. Press OK. The following diagram is created.
 

5) Select the Discriminate series button  and check the Value discrimination option. Write 10 in the Number of classes entry. Press OK.
 
CONCLUSION: The diagram corroborates the fact that greater liquid mass flow rate and gas mass flow rate promotes the heat transfer potential at the wall. This is the case for Purwasasmita's data using glass beads and a liquid having a viscosity of ca. 13 lb/ft/hr. For more information on the liquid composition, use Liquid composition in the Code discrimination listing. Press OK. The following diagram informs that pure gasoil was used as the liquid for this particular case.
 

Multi_R_Designer Tutorial