Systems and methods for monitoring, inferring state of health, and optimizing efficiency of refrigeration systems
US8725455B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | May 22, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2700/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and method for operating and monitoring refrigerators are described. Temperature cycles within the compartment are characterized using statistical, frequency and pattern analysis techniques to derive a steady-state characteristic of temperature within the compartment. A thermal sensor inside the conditioned area is monitored and temperature data sets can be analyzed to determine performance in comparison to a baseline, and energy consumption. Analysis of continuous temperature readings taken from individual or groups of freezers identifies patterns of variations in temperature cycles from which feedback on efficiency can be inferred. Electrical load can be determined by measuring or estimating current usage and identifying periods of time when compressors are active in the refrigerator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.