METHOD AND SYSTEM FOR CONTROLLING AND/OR REGULATING ROOM COMFORT VARIABLES IN A BUILDING

• US 20110153088A1
• Filed: 12/15/2010
• Published: 06/23/2011
• Est. Priority Date: 12/15/2009
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: GWERDER, Markus, Tödtli, Jürg
• Application Number:
  US12/968,976
• Publication Number:
  US 20110153088A1
• Time in Patent Office: Days
• US Class Current: 700/276
• CPC Class Codes: G05B 13/048 using a predictor
• CPC Class Codes: G05D 23/1923 using thermal energy, the cost of which varies in function of time

Abstract

In a method for controlling and regulating at least one room comfort variable (T_R1; T_R2) in a building, requirement signals (30) for cost-intensive energy are stored during a time interval (73) comprising a specified time period, the requirement signals (30) stored in the elapsed time interval are evaluated and used to generate current control signals (10, 11 . . . 15) for actuators for the use of what is known as free or low-cost energy. The method minimizes the consumption of cost-intensive or what is known as not free energy whilst still satisfying a predefined comfort requirement when heating, cooling, ventilating, lighting and shading rooms or zones of rooms in the building.

Claims

1. A method for controlling and regulating at least one room comfort variable in a building, comprising:

storing requirement signals for cost-intensive energy during a time interval comprising a specified time period, and

evaluating the requirement signals stored in the elapsed time interval and using the evaluated requirement signals to generate current control signals for actuators for use of free or low-cost energy.

2. The method as claimed in claim 1, further comprising evaluating data for the at least one room comfort variable stored in the elapsed time interval of the specified time period to generate said control signals.

3. The method as claimed in claim 1, further comprising selecting a setpoint room temperature value band bounded by a lower limit value and an upper limit value into which the room temperature is regulated.

4. The method as claimed in claim 3, wherein the limit values of the setpoint room temperature value band stored in the elapsed time interval are taken into account when generating the control signals.

5. The method as claimed in claim 1, wherein the room temperature values stored in the elapsed time interval are taken into account when generating the control signals.

6. The method as claimed in claim 4, wherein a difference between the room temperature values stored in the elapsed time interval and the limit values of the setpoint room temperature value band are defined when generating the control signals.

7. The method as claimed in claim 1, further comprising deciding, with aid of the requirement signals for cost-intensive energy stored in the elapsed time interval, whether the heating or cooling of a mass of the building, which acts as a thermal storage unit, is to be forced with free or low-cost energy.

8. The method as claimed in claim 1, further comprising determining and storing at least one operating state value i with the requirement signals stored in the elapsed time interval being evaluated to determine the operating state value and using the operating state values to generate current control signals for actuators for the use of free or low-cost energy.

9. The method as claimed in claim 1, further comprising determining at least two operating state values relating to venetian blinds associated with a venetian-blind-position.charge-storage-unit and a venetian blind-position.discharge-storage-unit, with an operating state value associated with the venetian blind-position.charge-storage-unit triggering the charging of the mass of the building acting as a thermal storage unit or an operating state value associated with the venetian blind-position.discharge-storage-unit) triggering the discharging of the mass of the building acting as a thermal storage unit, by evaluating a signal for a heat requirement stored in the elapsed time interval and a signal for a cold requirement stored in the elapsed time interval.

10. The method as claimed in claim 1, further comprising determining at least two operating state values associated with a free-cooling.charge-storage-unit and a free-cooling.discharge-storage-unit relating to low-cost cooling, with an operating state value associated with the free-cooling.charge-storage-unit triggering the charging of the mass of the building acting as a thermal storage unit or an operating state value associated with the free-cooling.discharge-storage-unit triggering the discharging of the mass of the building acting as a thermal storage unit, by evaluating a signal for a heat requirement stored in the elapsed time interval and a signal for a cold requirement stored in the elapsed time interval.

11. The method as claimed in claim 1, further comprising determining at least two operating state values associated with a natural-ventilation-night.charge-storage-unit and a natural-ventilation-night.discharge-storage-unit relating to natural ventilation in the night, with an operating state value associated with the natural-ventilation-night.charge-storage-unit triggering the charging of the mass of the building acting as a thermal storage unit or an operating state value associated with the natural-ventilation-night.discharge-storage-unit triggering the discharging of the mass of the building acting as a thermal storage unit, by evaluating a signal for a heat requirement stored in the elapsed time interval and a signal for a cold requirement stored in the elapsed time interval.

12. The method as claimed in claim 1, further comprising determining at least two operating state values associated with a mechanical-ventilation-night.charge-storage-unit and a mechanical-ventilation-night.discharge-storage-unit relating to mechanical ventilation in the night, with an operating state value associated with the mechanical-ventilation-night.charge-storage-unit triggering the charging of the mass of the building acting as a thermal storage unit or an operating state value associated with the mechanical-ventilation-night.discharge-storage-unit triggering the discharging of the mass of the building acting as a thermal storage unit, by evaluating a signal for a heat requirement stored in the elapsed time interval and a signal for a cold requirement stored in the elapsed time interval.

13. The method as claimed in claim 1, further comprising determining at least two operating state values associated with a heat-recovery.charge-storage-unit and a heat-recovery.discharge-storage-unit relating to heat recovery, with an operating state value associated with the heat-recovery.charge-storage-unit triggering the charging of the mass of the building acting as a thermal storage unit or an operating state value associated with the heat-recovery.discharge-storage-unit triggering the discharging of the mass of the building acting as a thermal storage unit, by evaluating a signal for a heat requirement stored in the elapsed time interval and a signal for a cold requirement stored in the elapsed time interval.

14. The method as claimed in claim 8, wherein when the operating state value is set it is also taken into account whether a room in the building is occupied.

15. The method as claimed in claim 1, wherein the time period of the elapsed time interval is between around 6 and 72 hours.

16. The method as claimed in claim 1, wherein the time period of the elapsed time interval is around 24 hours.

17. An system, comprising:

a hierarchical structure comprising at least two levels for controlling and regulating at least one room comfort variable in a building, having at least one facility disposed at an upper level for the optimizable control and regulation of the use of at least one low-cost or free energy source, and having at least one facility disposed at a lower level below the higher level for the lower-order regulation or control of the use of at least one further energy source, with a room comfort variable being the room temperature and the regulation strategy of the higher-order facility making use of attributes of a passive thermal storage unit of the building, it being possible instead of a setpoint room temperature value to select a setpoint room temperature value band bounded by a lower value and a higher value, into which the room temperature can be regulated; and

means for implementing a method as claimed in claim 1, and having a data flow from the lower level to the upper level and reference signals generated by the upper level and available in the lower level.

18. The system as claimed in claim 17, wherein a further room comfort variable is a brightness that can be controlled by electric lighting units and/or by sunlight that can be guided through windows.

19. The system as claimed in claim 17, wherein the low-cost or free energy source is radiation that can be guided into the building or out of the building by controllable permeability of windows and/or facades.

20. The system as claimed in claim 17, further comprising a facility disposed in the building for visualizing at least one operating state value of the system.