Energy efficient heat pump with valve system and counterflow arrangement

An energy efficient heat pump for a heating, ventilation, and air conditioning (HVAC) system, comprising:

• a vapor compression circuit configured to circulate a working fluid therethrough;
• a first heat exchanger disposed along the vapor compression circuit, wherein the first heat exchanger configured to place the working fluid in a first heat exchange relationship with a first air flow directed across the first heat exchanger;
• a second heat exchanger disposed along the vapor compression circuit, wherein the second heat exchanger configured to place the working fluid in a second heat exchange relationship with a second air flow directed across the second heat exchanger;
• and
• a valve system disposed along the vapor compression circuit, wherein the valve system is configured to direct the working fluid in a first inlet port of the first heat exchanger and to receive the working fluid from a first outlet port of the first heat exchanger in a cooling mode of the heat pump and in a heating mode of the heat pump, and the valve system is configured to direct the working fluid in a second inlet port of the second heat exchanger and to receive the working fluid from a second outlet port of the second heat exchanger in the cooling mode and in the heating mode.

An energy efficient heat pump for a heating, ventilation, and air conditioning (HVAC) system, comprising:

• a compressor;
• a first heat exchanger comprising a first inlet port and a first outlet port, wherein the first heat exchanger is configured to direct a working fluid from the first inlet port to the first outlet port to place the working fluid in a first counterflow arrangement with a first air flow directed across the first heat exchanger;
• a second heat exchanger comprising a second inlet port and a second outlet port, wherein the second heat exchanger is configured to direct the working fluid from the second inlet port to the second outlet port to place the working fluid in a second counterflow arrangement with a second air flow directed across the second heat exchanger;
• and
• a valve system configured to control flow of the working fluid through the heat pump, wherein the valve system is configured to direct the working fluid to the first inlet port and to the second inlet port in a cooling mode of the heat pump and in a heating mode of the heat pump, and wherein the valve system is configured to receive the working fluid from the first outlet port and from the second outlet port in the cooling mode and in the heating mode.