In a cold storage setting with a room temperature of -20 degrees, what would the evaporating temperature approximate?

In a cold storage setting where the room temperature is -20 degrees Celsius, the evaporating temperature of the refrigerant tends to be lower than the air temperature in the cold storage area. This temperature difference is essential for effective heat exchange and to ensure that the system operates efficiently.

When considering evaporating temperature, it is typically at a level that is lower than the air temperature in order to absorb heat from the surrounding environment effectively. The standard practice in refrigeration suggests that the evaporating temperature may be around 10 degrees lower than the air temperature in cold storage situations. This allows the refrigerant to draw sufficient heat, ensuring that the room maintains the desired lower temperature.

In this scenario, if the air off the evaporator is considered to be at around -20 degrees, then subtracting approximately 10 degrees results in an evaporating temperature of around -30 degrees. This relationship is crucial in designing and operating refrigeration systems efficiently, ensuring that they can manage the thermal load effectively while maintaining the cold storage conditions required.

Thus, indicating a calculated distance of about 10 degrees from the air temperature to the evaporating temperature reflects a common and practical understanding in refrigeration science, supporting the appropriateness of this answer.