Heating and cooling systems incorporating thermal storage, and defrost cycles for same

摘要: An apparatus for heating or cooling a space comprises main flow loop including compressor (1012), an outside heat exchanger (1014), inside (1016) connected to allow working fluid circulate therebetween, and first valve (1026) between the (1014) selectively block (1016). A bypass line extends outlet of inlet thermal storage device (1018) is positioned in line. second communicates with (1030) through selectively. Also described method operating refrigeration system hot gas defrost mode, wherein negative potential transferred refrigerant from frosted evaporator captured stored later use. In addition, low-temperature condensing cycle.