Abstract: Disclosed is a muffler for a water-cooled chiller or air-cooled of a vapor-compression or absorption refrigeration system, the muffler having: an upstream case having a fluid inlet; a downstream case connected to the upstream case at a downstream end of the upstream case, the downstream case having a fluid outlet; the upstream case having a plurality of axially adjacent outer muffler rings and a plurality of axially adjacent inner muffler rings, the outer muffler rings being axially coextensive and a radially exterior to the inner muffler rings and defining a fluid inlet passage therebetween, wherein the outer muffler rings and inner muffler rings are a metal mesh material.

Abstract: Disclosed is a muffler for a water-cooled chiller or air-cooled of a vapor-compression or absorption refrigeration system, the muffler having: an upstream case (110) having a fluid inlet (120); a downstream case (115) connected to the upstream case at a downstream end of the upstream case, the downstream case having a fluid outlet (125); the upstream case having a plurality of axially adjacent outer muffler rings (145) and a plurality of axially adjacent inner muffler rings (155), the outer muffler rings being axially coextensive and a radially exterior to the inner muffler rings and defining a fluid inlet passage (140) therebetween, wherein the outer muffler rings and inner muffler rings are a metal mesh material.

Abstract: A vaporizer includes an inner shell through which a refrigerant and oil mixture is flowed, and one or more hot gas pathways extending through the inner shell from a hot gas inlet to a hot gas outlet, through which a hot gas is flowed to boil refrigerant in the refrigerant and oil mixture. The inner shell is embedded in an outer shell. The outer shell defines a sump fluidly connected to the inner shell via a sump inlet line to deliver the refrigerant and oil mixture from the inner shell to the sump. A sump heater is located in the sump, which is configured to boil additional refrigerant from the refrigerant and oil mixture.

Abstract: A vapor compression system including: a compressor having a compressor suction port and a compressor discharge port configured to circulate a working fluid through a flow circuit; a first heat exchanger operably coupled to the compressor discharge port; a second heat exchanger operably coupled to the compressor suction port; a heat recovery heat exchanger operably coupled to the first and second heat exchangers wherein the heat recovery heat exchanger is configured to: receive the working fluid in a first phase from the first heat exchanger; receive the working fluid in a second phase from the second heat exchanger; exchange heat between the working fluid in the first phase and the second phase; and a bypass valve positioned between the heat recovery heat exchanger discharge and the second heat exchanger and defining a first flow path and a second flow path.

Abstract: A vapor compression system (20) comprises: a compressor (24) having a suction port (26) and a discharge port (28); a refrigerant flowpath (33) from the discharge port and returning to the suction port; a first heat exchanger (30) along the refrigerant flowpath; a second heat exchanger (50) along the refrigerant flowpath; and a vaporizer system (22; 300). The vaporizer system comprises: a first vaporizer (68A; 368A) and a second vaporizer (68B: 368B) each comprising: a vessel (86; 386) having an inlet (84), a vapor outlet (124), and a liquid outlet (130); and a gas bypass flowpath (160) in heat transfer relation with an interior of the vessel.

Abstract: Disclosed is a muffler for a water-cooled chiller or air-cooled of a vapor-compression or absorption refrigeration system, the muffler having: an upstream case (110) having a fluid inlet (120); a downstream case (115) connected to the upstream case at a downstream end of the upstream case, the downstream case having a fluid outlet (125); the upstream case having a plurality of axially adjacent outer muffler rings (145) and a plurality of axially adjacent inner muffler rings (155), the outer muffler rings being axially coextensive and a radially exterior to the inner muffler rings and defining a fluid inlet passage (140) therebetween, wherein the outer muffler rings and inner muffler rings are a metal mesh material.

Abstract: A vapor compression system (20) comprises: a compressor (24) having a suction port (26) and a discharge port (28); a refrigerant flowpath (33) from the discharge port and returning to the suction port; a first heat exchanger (30) along the refrigerant flowpath; a second heat exchanger (50) along the refrigerant flowpath; and a vaporizer system (22; 300). The vaporizer system comprises: a first vaporizer (68A; 368A) and a second vaporizer (68B: 368B) each comprising: a vessel (86; 386) having an inlet (84), a vapor outlet (124), and a liquid outlet (130); and a gas bypass flowpath (160) in heat transfer relation with an interior of the vessel.

Abstract: A vaporizer has: an inlet (72); an oil outlet (90; 94); a vent (120); a hot gas inlet (132); and a cooled gas outlet (134). A gas flowpath (130) extends from the hot gas inlet to the cooled gas outlet. A vaporizer chamber (192) is downstream of the inlet along a primary flowpath. A gas conduit (220) is along the gas flowpath in heat exchange relation with the primary flowpath. A sump (194) is below the vaporizer chamber. A housing (180) encloses the sump and the vaporizer chamber. A passageway extends from the vaporizer chamber to the sump.

Abstract: A fluid collection assembly includes a vaporizer configured to vaporize a refrigerant to separate the refrigerant from a liquid and a sump configured to collect the liquid in a trough formed by a junction of two diagonal sides of the sump. The sump includes a heating element in the trough.

Abstract: A vaporizer has: an inlet (72); an oil outlet (90; 94); a vent (120); a hot gas inlet (132); and a cooled gas outlet (134). A gas flowpath (130) extends from the hot gas inlet to the cooled gas outlet. A vaporizer chamber (192) is downstream of the inlet along a primary flowpath. A gas conduit (220) is along the gas flowpath in heat exchange relation with the primary flowpath. A sump (194) is below the vaporizer chamber. A housing (180) encloses the sump and the vaporizer chamber. A passageway extends from the vaporizer chamber to the sump.

Abstract: A multi-pass parallel tube heat exchanger is disclosed. The multi-pass parallel tubes heat exchanger provides a compact, light and inexpensive heat exchanger that may be oriented in any direction. These features and others make the disclosed exchanger ideal for use in a restricted area such as that available when providing localized cooling systems. This design is more efficient than the prior art and allows for a versatile operation with multiple circuiting options for the flow path and enhanced performance with multiple fluid and heat transfer operations.