Models by patbl

Calculator.make({|resident_count, liters_per_day_per_resident, filtered_fraction, home_fraction|
  liters_per_gallon = 128/33.8
  gallons_per_day_per_resident = liters_per_day_per_resident / liters_per_gallon
  filtered_at_home_gallons_per_day_per_resident = gallons_per_day_per_resident * home_fraction * filtered_fraction
  filtered_gallons_dispensed_at_home_per_year = resident_count *
    filtered_at_home_gallons_per_day_per_resident *
    365.25

  filtered_gallons_dispensed_at_home_per_year
}, {

guests = 70 to 115
guests_served_per_full_size_pan = 15 to 40
types_of_heated_food = 2 to 4
number_of_pans = guests / guests_served_per_full_size_pan * types_of_heated_food
pan_width = 10 to 13
pan_length =  18 to 22
pan_water_depth = 0.75 to 2
cubic_inches_of_water_per_pan = pan_width * pan_length * pan_water_depth
total_cubic_inches_of_water = number_of_pans * cubic_inches_of_water_per_pan
gallons_of_water = total_cubic_inches_of_water / 231

Calculator.make({|resident_count, liters_per_day_per_resident, filtered_fraction, home_fraction, tap_gpm, apec_gpm, multipure_gpm, culligan_gpm|
  annual_hours_spent_dispensing_water(gpm) = {
    liters_per_gallon = 128/33.8
    gallons_per_day_per_resident = liters_per_day_per_resident / liters_per_gallon
    filtered_at_home_gallons_per_day_per_resident =
      gallons_per_day_per_resident * home_fraction * filtered_fraction
    filtered_gallons_dispensed_at_home_per_year = resident_count *
      filtered_at_home_gallons_per_day_per_resident *
      365.25
    filtered_gallons_dispensed_at_home_per_year / gpm / 60

my_dist = 0.1 to 1
Plot.dist(my_dist, {xScale: Scale.linear({ min: -2, max: 6, title: "X Axis Title" }), showSummary: true})