calculation

[mre212]

hi all,

if i have boiler produce 5000kg/hr so what is suitable pump(m3/hr) for it ?

thanks

[FreezerGeezer]

1kg of water = 1l. SI std. iirc.
So, 5000kg/hr = 5000l/hr = 1.389l/s (l/s is what I normally see pumps rated in)

For your requested flow in m^3/hr:
Max. Density of water is 1000kg/m^3, so your 5000kg = 5m^3 max.
Therefore if you select a pump capable of 5m^3/hr against whatever your head is, it should be able to shift your production.

Now:
Density of water @ 100*C = 958kg/m^3
So, if your 5000kg/hr of production is @ 100*C,
5m^3/hr x .0958 = 4.79m^/hr =1.331l/s.
Assuming there is a size difference in pumps for that flow rate, I'd stick with the larger pump & fit a VSD to get the exact flow rate - if costs etc. allow - as it'll be less stressed & therefore should last longer.

However, I don't do this stuff for my living (just looked the figures up, remembered some long ago engineering lessons & converted) & will be interested to see if anyone disagrees & why.


NB: I take no responsibility if you choose to implement the information provided & find I got it wrong.