Environment
Climate, meteorology, sun, wind and environmental resources
Acids - pH Values
pH of common acids like sulfuric, acetic and more
Air - Thermophysical Properties
Thermal properties of air at different temperatures - density, viscosity, critical temperature and pressure, triple point, enthalpi and entropi, thermal conductivity and diffusivity and more.
Atmospheric Carbon Dioxide Concentration
Annual Carbon Dioxide concentration 1959 - 2015
Bases - pH Values
Some common bases as sodium hydroxide, ammonia and more
Beaufort Wind Scale
The Beaufort description and observation of wind and wind speed
Bio Ethanol Production from Raw Materials
Ethanol Bio-fuel production and raw materials
Biocides and Effectiveness
Effectiveness of biocides against bacteria, fungi and algae
Biogas - Carbon Nitrogen Ratios
Carbon - Nitrogen ratios for biogas produced from various raw materials
Biogas - Typical Composition
Typical composition of biogas produced from household waste.
Biogas Potential from Animal Manure
Potential biogas production from animal manure
Biomass Energy
Biomass energy units and converting values
Biomasses - Energy Content when used as Fuel
Biomass fuels and their energy content.
Carbon Monoxide and Health Effects
Exposure to Carbon Monoxide - CO and the health effects
Combustion of Fuels and Nitrogen Oxides (NOx) Emission
Emission of Nitrogen Oxides - NOx - with combustion of fuels like oil, coal, propane and more.
Combustion of Fuels - Carbon Dioxide Emission
Environmental emission of carbon dioxide CO2 when combustion fuels like coal, oil, natural gas, LPG and bio energy.
Earthquake Scales
Earthquake Scales - Richter Magnitude, Moment Magnitude and Mercalli Intensity
Energy Balance and Energy Ratio
Energy balance and energy payback ratio
Energy Stored in Capacitors
Potential power and energy stored in capacitors
Food and Foodstuff - pH Values
pH in common food products - like apples, butter, wines and more ..
Fossil vs. Alternative Fuels - Energy Content
Net (low) and gross (high) energy content in fossil and alternative fuels.
Fujita-Pearson Tornado Intensity Scale
Rating tornado intensity scale
Glazing Materials and Optical Properties
Optical properties of some commonly used glazing materials
Global Temperature Trend
Global temperature trend 1880 - 2015
Hurricane Intensity Scale
Saffir-Simpson damage potential scale for hurricanes
Hydropower
Water - power potential, head and flow rate
Ice - Thermal Properties
Thermal and thermodynamic properties of ice - density, thermal conductivity and specific heat at temperatures from 0 to -100 oC
Refrigerants - Environmental Properties
Refrigerants - Ozone Depletion (ODP) and Global Warming Potential (GWP)
Salinity of Water
Salinity of fresh, brackish and sea water
Solar Radiation - Daily Surface Energy
Daily surface energy from solar radiation
Solar Radiation through Windows
Heat from sun transmitted through windows
Sun Charts
Online solar chart creator
Urban Tree Heights
Height of trees commonly used in towns and urban areas
US Heating Degree-Days
Standard and industrial heating degree-days
Water - Thermophysical Properties
Thermal properties of water at different temperatures like density, freezing temperature, boiling temperature, latent heat of melting, latent heat of evaporation, critical temperature and more.
Water Content in Soil
Water or moisture content in soil
Water Demand Tree Species
Trees and their relative water demand
Wind Chill Index
The Wind Chill Index - or the Effective Temperature - of air in movement
Wind Energy
Available wind energy
Wind Power
Power generated from the wind
Wind Shear
Wind slowed down at surface by trees and obstructions
Wind Turbine Power Calculator
Online wind turbine calculator