Patent ID: 8166776

Claim:
A heating, ventilation, air conditioning and refrigeration (HVAC&R) system comprising: a compressor, a first heat exchanger, an expansion valve, and a second heat exchanger connected in a closed refrigerant loop; the first heat exchanger being in fluid communication with the compressor to receive refrigerant vapor from the compressor, the first heat exchanger comprising: a plurality of coils, each coil of the plurality of coils comprising an inlet manifold, an outlet manifold and a plurality of multichannel tubes connecting the inlet manifold and the outlet manifold; at least one air moving device, the at least one air moving device being positioned to circulate air through each coil of the plurality of coils, at least one coil of the plurality of coils receiving less airflow than the other coils of the plurality of coils; each coil of the plurality of coils being configured to provide a flow path for refrigerant, the refrigerant flowing along the flow path in the coil being cooled by airflow from the at least one air moving device; and at least one flow regulator being positioned in an outlet manifold of the at least one coil of the plurality of coils receiving less airflow, the at least one flow regulator being operational to regulate the flow of refrigerant in the at least one coil of the plurality of coils receiving less airflow to achieve a substantially equal temperature of refrigerant exiting the outlet manifolds of the plurality of coils.