Heat pump with ejector

Patent · 03 September 2019

OSTI ID:1576395

Feng, Yinshan; Mahmoud, Ahmad M.; Verma, Parmesh

A system (20; 300; 500) comprises: a compressor (22) having a suction port (40) and a discharge port (42); an ejector (32) having a motive flow inlet (50), a suction flow inlet (52), and an outlet (54); a separator (34) having an inlet (72), a vapor outlet (74), and a liquid outlet (76); a first heat exchanger (24); at least one expansion device (28, 30; 520); a second heat exchanger (26); and a plurality of conduits and a plurality of valves (100, 120, 130, 140, 144, 148, 150; 100, 140, 144, 148, 150, 320, 340; 100, 120, 530). The conduits and valves are positioned to provide alternative operation in: a cooling mode; a first heating mode wherein the ejector has a motive flow and a suction flow and where utilizing a first expansion device (30; 520) of the at least one expansion device; and a second heating mode utilizing the first expansion device and wherein the ejector has a suction flow and essentially no motive flow.

• Research Organization: Carrier Corp., Palm Beach Gardens, FL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: EE0006108
• Assignee: Carrier Corporation (Palm Beach Gardens, FL)
• Patent Number(s): 10,401,058
• OSTI ID: 1576395
• Country of Publication: United States
• Language: English