The variable speed control of the chilled water pumps achieves an additional chilled water plant. power savings of around 5% [2]. These systems put even more demands on the variable speed chiller control. system, while not affecting the fixed-speed control system at all. However, the difference in compressor map.
The density of dry air can be calculated using the ideal gas law, expressed as a function of temperature and pressure: where: The specific gas constant for dry air is 287.058 J/(kgÂ·K) in SI units, and 53.35 (ftÂ·lbf)/(lbmÂ·Â°R) in United States customary and Imperial units. This quantity may vary slightly depending on the molecular composition of air at a particular location.
The value of the gas constant 'R' depends on the units used for pressure, volume and temperature. R = 0.0821 literÂ·atm/molÂ·K. R = 8.3145 J/molÂ·K. R = 8.2057 m3Â·atm/molÂ·K. R = 62.3637 LÂ·Torr/molÂ·K or LÂ·mmHg/molÂ·K. Also Known As: Ideal Gas Constant, molar gas constant, universal gas constant.