Patent ID: 11959696
Assignee: WHIRLPOOL CORPORATION
Field: Other consumer goods (Other fields)
Classification: CPC F | IPC F

Claim 16:
17. A method of measuring insulation performance on a vacuum insulated cabinet structure, the method comprising the steps of:
(i) providing a vacuum insulated cabinet structure having an insulation space surrounding a storage compartment, a first temperature sensor positioned on a first side of the insulation space, a second temperature sensor positioned on a second side of the insulation space, a third temperature sensor positioned within the storage compartment, and a controller operably coupled to the first, second and third temperature sensors;
(ii) sensing a first temperature level (T1) using the first temperature sensor;
(iii) sensing a second temperature level (T2) using the second temperature sensor;
(iv) calculating a temperature differential (ΔT) by subtracting the first temperature level (T1) from the second temperature level (T2);
(v) sensing an ambient temperature level (Ti) within the storage compartment using the third temperature sensor;
(vi) calculating an overall heat transfer coefficient (Q) using the ambient temperature level (Ti), the first temperature level (T1), and a convective heat transfer coefficient for the first side of the storage compartment; and
(vii) determining a first conductivity level (K) using the temperature differential (ΔT), the overall heat transfer coefficient (Q) and a thickness of the insulating space.