公开(公告)号：US11754303B1

公开(公告)日：2023-09-12

申请号：US17216197

申请日：2021-03-29

Applicant: Trane International Inc.

Inventor： Christopher Blake Smith ,  Evan Brunner ,  Jonathan Edward Thrift

IPC: F24F11/38 ,  F24F11/526 ,  F24F110/12

CPC classification number: F24F11/38 ,  F24F11/526 ,  F24F2110/12

Abstract: Methods and related systems for diagnosing a loss of capacity of a heating, ventilation, and air conditioning (HVAC) system are disclosed. In an embodiment, the method includes summing a runtime of an auxiliary heat source of the HVAC system over a plurality of time blocks. Additionally, the method includes summing an expected runtime of the auxiliary heat source over the plurality of time blocks. Further, the method includes comparing the runtime sum with the expected runtime sum, wherein the expected runtime for each of the plurality of time blocks is a function of an outdoor ambient temperature over a time-delay block beginning before the corresponding time block.

公开(公告)号：US12066203B1

公开(公告)日：2024-08-20

申请号：US18358457

申请日：2023-07-25

Applicant: Trane International Inc.

Inventor： Christopher Blake Smith ,  Evan Brunner ,  Jonathan Edward Thrift

IPC: F24F11/38 ,  F24F11/526 ,  F24F110/12

CPC classification number: F24F11/38 ,  F24F11/526 ,  F24F2110/12

Abstract: Methods and related systems for diagnosing a loss of capacity of a heating, ventilation, and air conditioning (HVAC) system are disclosed. In an embodiment, the method includes summing a runtime of an auxiliary heat source of the HVAC system over a plurality of time blocks. Additionally, the method includes summing an expected runtime of the auxiliary heat source over the plurality of time blocks. Further, the method includes comparing the runtime sum with the expected runtime sum, wherein the expected runtime for each of the plurality of time blocks is a function of an outdoor ambient temperature over a time-delay block beginning before the corresponding time block.