Denver's atmospheric pressure is 83.4 kPa, boiling temperature is 94.59°C. Water in 2.5 m³ tank at 75°C becomes completely vaporized at 140.7°C. Water at 0.5 MPa pressure and 2890 kJ/kg enthalpy reaches 240°C
Pressure is force applied over a surface with a certain area. Air systems operate at low pressures due to gas compressibility. Slight pressure deviations can significantly affect system operation
Pascal's law states that pressure changes in confined fluids are transmitted equally throughout. Principle was established by Blaise Pascal in 1653 and published in 1663. Principle applies to both static flow and continuous fluid processes
Static pressure is the total pressure in Bernoulli's equation. Pressure can be measured at every point in a fluid regardless of motion. Total pressure remains constant along streamline in irrotational flow. Static pressure is used to distinguish it from total and dynamic pressures
Each gas in a mixture has a partial pressure as if occupying its own volume. Total pressure of ideal gas mixture equals sum of partial pressures (Dalton's Law). Partial pressure measures thermodynamic activity of gas molecules. Gases dissolve and react according to partial pressures, not concentrations
Pascal is SI unit of pressure, defined as one newton per square meter. Pressure equals force divided by area (P = F/A). Pascal's law states that force is transmitted uniformly through fluid