What is the specific volume of liquid at -15 degrees?

The specific volume of a liquid at a given temperature is defined as the volume occupied by a unit mass of that liquid. In refrigeration applications, the specific volume can vary significantly based on temperature and pressure. At -15 degrees Celsius, it is important to refer to tables or charts that provide specific volumes for refrigerants, as key properties can quickly change with temperature.

When considering the listed options, the correct answer reflects the typical specific volume of liquid refrigerants at -15 degrees Celsius, particularly for common substances like ammonia or other refrigerants that may be solid or liquid at this temperature. The value of 6.11 indicates that it is representative of a certain refrigerant condition at that temperature.

Other options present lower specific volumes which would typically correspond to either gases or liquids at higher pressures than what is typical at -15 degrees or may correspond to different refrigerants that do not maintain the same specific volume under the temperature conditions provided. Being trained and familiar with these values is crucial for making accurate calculations and assessments in refrigeration systems.