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.
Universal gas constant and ideal gas law. ï· The universal gas constant (Ru) is, as its name implies, universal, i.e., the same regardless of the gas being. considered. ï· The ideal gas law in terms of Ru is PnRTV ï½ u , where P is the absolute pressure of the gas, V is the.