Abstract: A heat exchanger including a tube stack having a plurality of microtubes; a first header coupled with a heat exchanger refrigerant fluid inlet and configured to introduce refrigerant fluid traveling in a first direction into the tube stack; and a second header coupled to a heat exchanger refrigerant fluid outlet and having a second header passage configured to receive refrigerant fluid traveling in the first direction through some of the microtubes and discharge the received refrigerant fluid in a second direction to some of the microtubes. The first header has a first header passage configured to receive refrigerant fluid traveling in the second direction and discharge the received refrigerant fluid in the first direction to some of the microtubes. The second header further configured to receive refrigerant fluid traveling in the first direction and discharge the received refrigerant to the heat exchanger refrigerant fluid outlet.

Abstract: A microtube heat exchanger is disclosed, including two end plates with an array of holes or openings and an array of microtubes disposed in the array of openings between the two end plates. The heat exchanger can be used in environmental control systems, including systems for aerospace applications.

Abstract: A microtube heat exchanger is disclosed, including two end plates with an array of holes or openings and an array of microtubes disposed in the array of openings between the two end plates. The heat exchanger can be used in environmental control systems, including systems for aerospace applications.