Abstract: A heating, ventilation, and air conditioning (HVAC) system includes a flash tank configured to receive a refrigerant and to separate the refrigerant into vapor refrigerant and liquid refrigerant. The flash tank is configured to generate a flow of refrigerant therein along a circular flow path. The flash tank has a main body having a circular cross-section with a diameter and an inlet coupled to the main body and configured to direct the refrigerant into the main body. The inlet has a center line extending in a common direction with the diameter, and the center line is offset from the diameter in a radial direction.

Abstract: A heat exchanger of a heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a plurality of microchannel tubes, where each microchannel tube of the plurality of microchannel tubes is configured to direct refrigerant therethrough, and a plurality of fin sets, where each fin set of the plurality of fin sets is disposed between corresponding adjacent microchannel tubes of the plurality of microchannel tubes. Additionally, each fin set of the plurality of fin sets includes a respective fin density based on a location of the respective fin set along a height of the heat exchanger.