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riderb
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I would like to know if there is a measure, in BTU's, of the cooling effect from the release of compressed air through a nozzle and how it relates to PSI
riderb said:I would like to know if there is a measure, in BTU's, of the cooling effect from the release of compressed air through a nozzle and how it relates to PSI
The BTU (British Thermal Unit) of expanding compressed air can be calculated by using the following formula: BTU = V x (P2 - P1) x 0.000293, where V is the volume of the compressed air in cubic feet, P2 is the final pressure in psi (pounds per square inch), and P1 is the initial pressure in psi.
The unit used to express BTU of expanding compressed air is BTU per cubic foot (BTU/ft3).
Yes, the temperature of the compressed air can affect the BTU calculation. The formula for calculating BTU assumes that the temperature of the compressed air remains constant. If the temperature changes during expansion, the calculation may not be accurate. In this case, it is best to measure the temperature before and after the expansion and adjust the calculation accordingly.
Yes, there is a difference in the formula used to calculate BTU for expanding compressed air compared to other substances. This is because compressed air is considered an ideal gas, meaning that it follows the ideal gas law, while other substances may not. Therefore, the formula for calculating BTU for compressed air takes into account the properties of an ideal gas.
No, the BTU calculation only measures the heat energy released or absorbed during expansion. To determine the work done during expansion, a separate calculation using the ideal gas law and the change in volume and pressure must be performed.