6.1 Cooling Capacity
This is usually defined as the specified nominal cooling capacity at normal working conditions of the system in watts, according to evaporating and condensing temperatures. The capacity is determined by the mass flow rate of the refrigerant, which depends on the compressor’s displacement, RPM, and volumetric efficiency. RIGID miniature compressor refrigeration capacity ranges from 100W to 800W.

6.2 Refrigerant Type
Refrigerant selection can be made on the basis of availability, performance, and ecological considerations. RIGID BLDC rotary compressors have been verified for use with R134a refrigerant.

6.3 Ambient Temperature
The compressor must be selected in order to ensure it’s suitable to operate at the highest expected ambient temperature. RIGID mini compressors are usually intended for indoor use, and a minimum of +5ºC is required in order for proper lubrication. In 2017, RIGID has successfully developed the T-tropical series mini compressor, which is able to work at 52-degree ambient temperature.

6.4 Electrical Power Available
RIGID DC compressors are used in mobile or portable refrigeration systems. Its DC power is produced by batteries, fuel cells, vehicle alternators, solar panels, or from an AC inverter power supply. The compressor must be selected for use according to the DC voltage available. RIGID compressors are available in 12V, 24V, and 48V versions.

6.5 Size and Cooling
RIGID mini compressors are extremely small, high-performance rotary refrigeration compressors. Its size is only an adult's fist and weighs only 1.6 to 2.2 lbs. Current models produce as much as 100W to 800W of cooling under standard ASHRAE conditions, using a single-cylinder configuration. Compatible with various refrigerants and running on 12, 24, and 48VDC, or AC power through an AC-DC conversion, the new compressors are starting a new trend in various compact mobile cooling systems as well as small foot-print countertop appliances with cooling or ice-making capabilities.

6.6 RIGID Mini Compressor Cooling Capacity and COP

Coefficient Of Performance: Up to 3.25W/W