Device and method for controlling opening of a valve in an HVAC system
US9874880B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2014 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | May 14, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B25/005
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
For controlling the opening of a valve (10) in an HVAC system (100) to regulate the flow φ of a fluid through a thermal energy exchanger (2) of the HVAC system (100) and adjust the amount of energy E exchanged by the thermal energy exchanger (2), determined are the flow φ through a valve (10) and the temperature difference ΔT=Tin−Tout between the supply temperature Tin of the fluid entering the thermal energy exchanger (2) and the return temperature Tout of the fluid exiting the thermal energy exchanger (2). The opening of the valve (10) is controlled depending on the flow φ and the temperature difference ΔT. For example, the opening of the valve (10) is controlled depending on a control criterion c=ƒ(φ,ΔT), calculated from the flow φ and the temperature difference ΔT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.