The atoms account for only 4.6% of the total energy density, or a density of one proton per four cubic meters. 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. Jany Tran -- 2002 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. This is a conversion chart for normal cubic meter of natural gas (Natural Gas Energy Equivalent). The amount of energy of natural gas can be converted from Btu per cubic feet to Joules per cubic meter. Then click the Convert Me button. 10-3 kg/m 3 = g/m 3; Example - Moisture Carrying Capacity in Heated Air. It is expressed as grams of moisture per cubic meter of air (g/m3). These particles have a really short life, and undetectable physical effects. 1 cubic foot = 0.0283 cubic meters. A BTU= 0.29watts. Cubic feet and cubic meter are both measures of volume. The maximum absolute humidity of warm air at 30°C/86°F is approximately 30g of water vapor – 30g/m3. 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.). 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 objective of compressed air energy-savings projects is to reduce the kWh consumed by the electric motors powering your air compressors. So, either multiply by 0.0283 OR divide by 35.315. 2: Enter the value you want to convert (normal cubic meter of natural gas). Convert from cubic feet to cubic meters. A cubic meter of ocean water weighs approximately 1,025 kilograms (2,260 lb.). This energy is mainly caused by virtual particles. 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. b) Suppose a particular turbine has blades with a radius of 42m and is able to capture 37% of the available wind energy. This step only applies to imperial meters. 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 Absolute humidity is the measure of water vapor (moisture) in the air, regardless of temperature. Step 4 You can also go to the universal conversion page. The maximum absolute humidity of cold air at 0°C/32°F is approximately 5g of water vapor – 5g/m3. 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. However, since we will ultimately be expressing units in metric form we need to get the units into metric form. 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