Air conditioners, liquid chilling packages, heat pumps, process chillers and dehumidifiers with electrically driven compressors. D’etermination of the sound power level. Part 2. Water heaters with heat pumps
State system for ensuring the uniformity of measurements. Transfer units of time, frequency and time scale national UTC (SU) from the State primary standard. The Russian Federation with the use of the GLONASS system. Fundamentals