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Posts posted by karlwx

  1. On 1/6/2021 at 11:11 PM, phillies2628 said:

    Still here. Wunderground ended their free api and transitioned their largest paying users to their parent companies Weather.com and IBM (think $1000+ per month). I was working with Dark Sky's API and had a somewhat functional product, but they were acquired by Apple and are supposed to end functionality by the end of this year. With my PWS key I can still get my own data, and cobbled together a personal app for that. If there was enough interest and a good enough API I would consider redeveloping it. 

    Send me a pm or a facebook message - I have some ideas for data acquisition. It's not as hard as it seems, and I think I could write our own custom weather API without much difficulty. 

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  2. 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 (CFM, decent approximation):



    Use this chart and your air compressor's flow rate (CFM @ 90 psi) to figure out nozzle sizing for your nucleation nozzle. For example, for a compressor rated 5 cfm @ 90 psi, we would choose a #5 nozzle. Note that the values in this chart are approximated and may not be completely accurate. Also, depending on the compressor, the flow rate may not match the manufacturer specifications. I recommend buying several nozzles to test. Optimal air pressure at the nuc is no lower than 75 psi. 

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