Wetbulb Temperature Chart
Pressure Washer Nozzle Charts
Water flow rate through nozzle at various pressures (GPM, approximate)
Use this chart to figure out your total system nozzle number based on your water pump's flow rate and your desired system pressure. Usually 450-600psi is best for cold conditions and 600-800 psi is optimal for marginal temperatures. You can run at higher pressures to help deal with warm water temps, but more water will be lost to evaporation (small drops).
Air flow rate through nozzle at various pressures (CF