Evaporation Rate
Evaporation Rate
(OP)
Will somebody help me how to calculate the approximate evaporation rate at a waterfall pond. The rate of recirculation water is @ 2,500 GPM.Ambient temperare is 85 deg. F during summer months ( wet bulb temp.),@80% relative humidity.
Appreciate any help.





RE: Evaporation Rate
RE: Evaporation Rate
E=(c*dT)/1000 Where:
E= evap. rate (gal/min)
c= system circ. rate (gal/min)
dT=system temp. diff. (deg. F)
(hot return temp. - cold supply)
Or you could use the general rule of thumb: E is approx. equal to 1% of recirc rate for every 10 deg. diff. between hot return and cold supply temp.
Hope this helps.
saxon