Patent ID: 11859861
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A method of providing conditioned air to a structure, comprising:
flowing a refrigerant through a side-flow unit external to the structure, the side-flow unit comprising an outdoor coiled-tube heat exchanger comprising first tubing with an outer diameter less than or equal to eight millimeters (8 mm);
flowing the refrigerant through an indoor coiled-tube heat exchanger disposed within the structure and coupled to the outdoor heat exchanger, the indoor heat exchanger comprising second tubing with an outer diameter less than ⅜ inch, wherein the outer diameter of the first tubing is smaller than the outer diameter of the second tubing;
circulating air from the structure over the indoor heat exchanger using an airflow circulation system and then routing the air back to the structure via ductworks; and
reducing a pressure of the refrigerant using an electronic expansion valve in fluid communication with at least one of the outdoor or indoor heat exchangers.