Method of maximizing the efficiency of an environmental control system including a programmable thermostat
US5361983A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Sep 28, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1904
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A process which is periodically executed by a programmable thermostat of a heating and cooling system which controls the temperature of a defined space within a structure subjected to a variable external environment. The process advances by an increment of time, .DELTA.t, when the set point temperature of the thermostat changes from an occupied set point temperature to an unoccupied set point temperature. The magnitude of .DELTA.t is a function of the thermal lag of the structure, its external environment, and an amount of temperature change that is acceptable to occupants of the space. Each time the process is executed, the magnitude within predetermined limits of .DELTA.t to be used the next time the process is executed is recalculated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.