hot water boiler - storage vessel - heat exchanger selection

[pumpmann]

follow engineers
who co could provide insight on the selection of boiler and HX kw capacity and the Storage volume of vessel ( the balance point between heat generation & storage volume)
the application is an industrial application requiring 85°C d hot water heat from 10°C
heat source will be fire tube superheated water boiler (not steam)
average drawdown of water =1.5 kg/s
ASHRAE have Recovery/ vs heating Capacity curves for domestic applications ( i cant find similar for industrial applications)
any hints & reference will be appreciated

 

[nicolai]

to clarify how : how to find the balance between vessel storage size and heating capacity?
any rules of thumbs or guidelines available on the subject?

 

[MJCronin]

My first rule of thumb would be find an experienced Process Plant/Thermal Engineer ...

- Develop a realistic Block Flow/PID drawing

- Model your proposed system in a Heat Balance software package (possibly one that has the desired ASHRAE curves)

- Run various cases and decide upon the best solution

MJCronin
Sr. Process Engineer

 

[trashcanman]

This should fix you up. I developed it for storage tank water heaters. Units are imperial. The easiest way to use it is to put it in a spreadsheet. There, you can play with the variables and see what happens. Heat input to tank is net heat, assuming some efficiency of the boiler.