Nowagreen: Energy Conservation for mitigation of Global Warming

online energy simulation programs, calculators and converters




Hydroelectric Turbine Online Energy Simulation and Optimization

* Input: Hydrology - Renewable Energy (RE)
  • Head [m]
  • month average water flow [m3/s] (for each month)
  • * Input: Equipment
  • turbine power [MW]
  • maximum turbine overload [0%-10%]
  • generator efficiency [%], default = 97%
  • generator Power Factor [%], default = 90%
  • auxiliary and in-house electricity consumption, default = 2.5%
  • non-operating hours [hr/y], default = 720 hr/y
  • Transmission and Line Losses (T&L) [%], default = 2%
  • * Input: Economic Parameters
  • investment in the hydro project (I) [$]
  • O&M [% of Investment], default = 2%
  • Rate of Interest (ROI) [%/year], default = 6%
  • life expectancy of the project [years], default = 30 years
  • electricity export tariff [cent/kWh], default = 5.5 US cent/kWh
  • * Output for each month, year minimum, average, maximum
  • Renewable Energy (RE) [MW]
  • Turbine Efficiency
  • Turbine effective power [MWh/hr]
  • Net Export of Electricity [MWh/hr]
  • * Output: Annual Hydro Energy Generation
  • Renewable Energy per year [MWh/year]
  • Turbine Energy [MWh/year]
  • Net Export [MWh/year]
  • * Output: Equipment
  • turbine power to max RE ratio [%]
  • Plant Load Factor (PLF) [%]
  • * Output: Economic Parameters
  • yearly cost of Investment (Iy) [$/y]
  • critical tariff [cent/kWh]
  • recommended tariff [cent/kWh]
  • max no loss Investment [$]
  • income from Renewable Energy [$/year]
  • yearly net income (NIny) [$/y]
  • NIny-Iy [$/y]
  • Capital Recovery Factor (CRF)
  • Present Value of RE (PVRE) [$]
  • Present Value of the project (PV) [$]
  • Net Present Value of the project (NPV) [$]
  • PV/I [%]
  • profit (PV/I-1) [%]



  • High Voltage Electric Lines Electro-Magnetic Field Radiation online calculator

    * electric line kiloVolts
    * distance from electric line:
  • meters [m]
  • yards [y]
  • feet [ft]
  • * average hours a day of exposure to the line radiation, preset: 15 hr/d
    * radiation limit 24 [mGhr/day]
    * calculations results:
  • EMF - average [miliGauss]
  • EMF - peak [miliGauss]
  • EMF daily radiation [mGhr/day]
  • average day radiation to limit ratio
  • peak day (extreme weather) radiation to limit ratio


































  • Heat Index and Overcooling Heat Index

    * Input:
  • Relative Humidity (RH) %:
  • air temperature in °C or °F
  • * Output:
  • Heat Index in °C and °F
  • if relevant:
    Overcooling extended time [%]
    energy waste [%]
    Overcooling Heat Index (OCHI) in °C and °F









  • Building Energy Simulation and Optimization - BESOO

    * Input:
  • orientation of building walls
  • Cool On - air conditioning operating temperature °C:
  • infiltration [changes per hour]
  • ventilation parameters
  • building details
  • details of outside wall layers [meter]
  • optional 10min results, if yes, the simulation may take up to 120 seconds
  • default values for all input fields
  • * Output:
  • Cooling period, hours, energy, condense, power
  • Heat Index average, maximum, minimum
  • Heat Index not in cooling hours
  • ventilation total time
  • comfort total hours


  • Economic Evaluation of Energy Conservation Projects

    * Input Energy Consumption:
  • electricity consumption
  • electricity tariff [cent/kWh]
  • fuel and gas consumption [$/y]
  • * Input Energy Saving:
  • electricity saving
  • fuel and gas saving
  • total saving [$/year], [%]
  • * Input Economic Parameters:
  • Investment in energy conservation project (I) [$]
  • life expectancy of the energy conservation project [years]
  • * Output:
  • total energy consumption [$/y]
  • saving of energy [kWh/y], [$/y], [%]
  • saving of peak demand of electricity [kW]
  • Capital Recovery Factor (CRF)
  • Present Value of yearly savings (PV) [$]
  • Net Present Value of yearly savings (NPV) [$]
  • PV/I [%]
  • Profit (PV/I-1) [%]
  • Max no loss Investment [$]
  • * final result of the techno-economic analysis
    * preset values for easy understanding and demonstration
    * change of any value automatically recalculates all outputs



    selection of room air conditioner

    * region:
  • preset of many locations all over the world, or
  • user defined input of the hottest month
    average temperature [C]
  • * building details:
  • floor (middle, lowest, highest)
  • room floor area [m2], [SqFt]
  • * Coefficient of Performance - COP for cooling, default = 3.8
    * working hours of air conditioner [hr/y],
    preset defaults for each region
    * electricity tariffs, cent/kWh, including VAT,
    default = 10.0 c/kWh
    * Output:
  • cooling capacity [W], [BTU/hr]
  • electric power [W]
  • compressor size [HP]
  • electricity consumption [kWh/y], [$/y]
  • justified additional investment in 0.1 better COP [$]










  • Economic Evaluation of Energy Conservation Projects
    Capital Recovery Factor

    * Input:
  • Rate of Interest (ROI) [%/year]
  • life expectancy of the energy conservation project [years]
  • Investment in energy conservation project (I) [$]
  • Energy Saving [$/year]
  • * Output:
  • Capital Recovery Factor (CRF)
  • Present Value of yearly savings (PV) [$]
  • Net Present Value of yearly savings (NPV) [$]
  • PV/I [%]
  • Profit (PV/I-1) [%]
  • Max no loss Investment [$]
  • * preset values for easy understanding and demonstration
    * change of any value automatically recalculates all outputs




    Investment: Loan and Mortgage online calculator

    * Input:
  • years
  • rate of interest [%/y]
  • loan amount
  • * Output:
  • monthly payments
  • yearly payments
  • total payments
  • money loss
  • money loss, %
  • * 8 columns of sets of data:
  • yearly payments delta to left column
  • money loss delta to left column
  • * change of monthly payments changes loan amount
    * change of any value automatically recalculates all outputs
    * preset values for demonstration
    * link to updated rates of interest (Israel)












    Global Warming Baselines Converter

    * Input:
  • Baseline 1 (source) = baseline of the source data, from year - to year
  • Baseline 2 (target) = baseline of the convertet data, from year - to year

  • * Output:
  • Conversion Factors [°C] for:
    Land+Ocean
    Land only
    Ocean only
  • to receive the values of the converted data, the Conversion Factor should be added to the source data
  • Global Warming above the 1850-1900 baseline, °C

    * Input:
  • select year to show data of the global warming
  • * Output:
  • Global Warming above the 1850-1900 baseline, °C:
    Land+Ocean
    Land only
    Ocean only


  • Celsius / Fahrenheit online converter

    * Celsius to Fahrenheit
    * Fahrenheit to Celsius
    * 7 columsn of sets of data (preset)
    * instant calculations with any change


    feet+inch to centimeters online converter

    * feet - decimal (like 11.25)
    * feet = integer + inch decimal
    * mm
    * cm
    * 3 columns of sets of data (preset)
    * instant calculations with any change
    miles to kilometers online converter

    * mile
    * Nautical mile
    * km
    * 5 columns of sets of data (preset)
    * instant calculations with any change

    Miles per US Gallon to Liter per 100km online converter

    * Liter/100km
    * Miles/Gallon
    * 2 columns of sets of data (preset)
    * instant calculations with any change




    pound+ounce to gram online converter

    * pound - decimal (like 11.5)
    * pound integer + oz decimal
    * gram
    * kg
    * 3 columns of sets of data (preset)
    * instant calculations with any change











    US Gallon, Dry Gallon, Quarts, Pints, Ounces, cubic inch to Liters online converter

    * US liquid Volume/Capacity units
  • US liquid gallon
  • US liquid quart
  • US liquid pint
  • US fluid ounce
  • cubic inch
  • * US dry Volume/Capacity units
  • US bushel
  • US dry gallon
  • * Metric units
  • Liter
  • milliLiter = cm3
  • * 3 columns of sets of data (preset)
    * instant calculations with any change



    °C/°F, kg/lb, km/mile, Liter/gal, (Liter/100km)/(Miles/Gallon)

    * Celsius / Fahrenheit:
  • Celsius to Fahrenheit
  • Fahrenheit to Celsius
  • 6 columsn of sets of data (preset)
  • * gram / ounce:
  • gram to ounce
  • ounce to gram
  • 2 columsn of sets of data (preset)
  • * kg / pound:
  • kg to pound
  • pound to kg
  • 3 columsn of sets of data (preset)
  • * Liter / US gallon:
  • Liter US gallon
  • US gallon to Liter
  • 3 columsn of sets of data (preset)
  • * km / US mile:
  • km to US mile
  • US mile to km
  • 4 columsn of sets of data (preset)
  • * (Liter/100km) / (Miles/Gallon):
  • Liter/100km to Miles/Gallon
  • Miles/Gallon to Liter/100km
  • 2 columsn of sets of data (preset)
  • * instant calculations with any change



    online countdown and stopwatch

    * set: hours, minutes, seconds
    * display:
  • text to remind you: (like:switch off water heating)
  • start time
  • current time
  • end time
  • elapsed time from start = stopwatch
  • date, day of the week
  • * preset: 30min



















    online energy simulation programs, calculators and converters


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