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Step 4 Jany Tran -- 2002 Estimates put the average energy density of the present day Universe at the equivalent of 5.9 protons per cubic meter, including dark energy, dark matter, and baryonic matter (ordinary matter composed of atoms). The maximum absolute humidity of cold air at 0°C/32°F is approximately 5g of water vapor â 5g/m3. 1 cubic foot = 0.0283 cubic meters. a) Calculate how much kinetic energy the wind contains, per cubic meter, at this location. Though the density of air will vary due to differences in temperature, moisture content, and altitude, a cubic meter of air at sea level weighs approximately 1.2 kilograms (2.6 lb.). If 1 Btu equals 1055.1 J and 1 ft 3 equals 0.028316 m 3, then 1000 Btu/ft 3 multiplied by 1055.1 J and divided by 0.028316 m 3 equals 37 MJ/m 3, which is the average energy content of natural gas. So it takes .005 watts to heat 1 cubic foot of DRY air 1 degree F. This is for dry air, the easiest way to do it is get a Psychrometric chart and plot the temp/humidity change you are after and calculate the change in enthalpy of the air in BTU's. However, since we will ultimately be expressing units in metric form we need to get the units into metric form. 10-3 kg/m 3 = g/m 3; Example - Moisture Carrying Capacity in Heated Air. 1 Btu per second = 1.055 kilowatts 1 Btu per second = 1.415 horsepower 1 Btu per second = 1.434 metric horsepower 1 Btu per second = .252 kilocalories per second 1 kilowatt = .9478 Btu per second 1 kilowatt = 1.341 horsepower 1 kilowatt = 1.36 metric horsepower 1 kilowatt = .2388 kilocalories per second 1 horsepower = .7457 kilowatts The energy density of oil is 35 to 45 gigajoules (10,000 kWh) per cubic meter One gigajoule equals one billion joules, and there are 3,600,000 joules in a kWh. Please use the calculator below to achieve an understanding of the kWh consumed (or saved) in your compressed air system. Absolute humidity is the measure of water vapor (moisture) in the air, regardless of temperature. Cubic feet and cubic meter are both measures of volume. This step only applies to imperial meters. The objective of compressed air energy-savings projects is to reduce the kWh consumed by the electric motors powering your air compressors. You can also go to the universal conversion page. Density of air at standard conditions is 0.075lb/ft3. This energy is mainly caused by virtual particles. These particles have a really short life, and undetectable physical effects. 2: Enter the value you want to convert (normal cubic meter of natural gas). To switch the unit simply find the one you want on the page and click it. At the site of a wind farm in North Dakota, the average wind speed is 9.4 m/s and the average density of air is 1.3 kg/m^3. This is a conversion chart for normal cubic meter of natural gas (Natural Gas Energy Equivalent). The atoms account for only 4.6% of the total energy density, or a density of one proton per four cubic meters. So, either multiply by 0.0283 OR divide by 35.315. b) Suppose a particular turbine has blades with a radius of 42m and is able to capture 37% of the available wind energy. Air is heated from 20 o C to 50 o C.. from the table above the maximum moisture content in air at 20 o C is 17.3 g/m 3, and; the maximum moisture content in air with temperature 50 o C is 83 g/m 3 ; The increased ability to carry moisture can be calculated as In a cubic meter of empty space, there is about [math]10^{-9}[/math] Joules of energy. The maximum absolute humidity of warm air at 30°C/86°F is approximately 30g of water vapor â 30g/m3. Then click the Convert Me button. A BTU= 0.29watts. It is expressed as grams of moisture per cubic meter of air (g/m3). Convert from cubic feet to cubic meters. The amount of energy of natural gas can be converted from Btu per cubic feet to Joules per cubic meter. 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December 8, 2020