A refrigerant cycle is provided with a compressor system, capable of
simultaneously delivering refrigerant to multiple condensers operating at
different temperature levels. A single evaporator communicates with these
condensers. One of the condensers receives fully compressed refrigerant
while the others receives refrigerant at an intermediate pressure. A
control can optionally direct refrigerant to only one of these condensers
to achieve desired heat rejection and other operational characteristics.
Various system configurations with multiple compressors and condensers
are also disclosed.