Ah, I look forward to testing out 2.8 when I get through this exercise in 2.5!
The design flow rate in the fluid cooler. The error I get:
************* Beginning Plant Sizing Calculations
** Severe ** SizeFluidCooler: The combination of design input values did not allow the calculation of a
** ~~~ ** reasonable UA value. Review and revise design input values as appropriate. Specifying hard
** ~~~ ** sizes for some “autosizable” fields while autosizing other “autosizable” fields may be
** ~~~ ** contributing to this problem.
** ~~~ ** This model iterates on UA to find the heat transfer required to provide the design outlet
** ~~~ ** water temperature. Initially, the outlet water temperatures at high and low UA values are
** ~~~ ** calculated. The Design Exit Water Temperature should be between the outlet water
** ~~~ ** temperatures calculated at high and low UA values. If the Design Exit Water Temperature is
** ~~~ ** out of this range, the solution will not converge and UA will not be calculated.
** ~~~ ** The possible solutions could be to manually input adjusted water and/or air flow rates based
** ~~~ ** on the autosized values shown below or to adjust design fluid cooler air inlet dry-bulb temperature.
** ~~~ ** Plant:Sizing object inputs also influence these results (e.g. DeltaT and ExitTemp).
** ~~~ ** Inputs to the fluid cooler object:
** ~~~ ** Design Fluid Cooler Load [W] = 582060.00
** ~~~ ** Design Fluid Cooler Water Volume Flow Rate [m3/s] = 1.388000E-003
** ~~~ ** Design Fluid Cooler Air Volume Flow Rate [m3/s] = 139666.47
** ~~~ ** Design Fluid Cooler Air Inlet Dry-bulb Temp [C] = 35.00
** ~~~ ** Inputs to the plant sizing object:
** ~~~ ** Design Exit Water Temp [C] = 39.00
** ~~~ ** Loop Design Temperature Difference [C] = 11.00
** ~~~ ** Design Fluid Cooler Water Inlet Temp [C] = 51.67
** ~~~ ** Calculated water outlet temp at low UA [C] (UA = 58.21 W/K) = 51.50
** ~~~ ** Calculated water outlet temp at high UA [C] (UA = 582060.00 W/K) = 35.00
All the numbers are things I have input except for the Design Fluid Cooler Water Volume Flow Rate