Controlling device and method for HVAC system

• US 9,891,636 B2
• Filed: 06/17/2014
• Issued: 02/13/2018
• Est. Priority Date: 12/12/2013
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Wu, Min-Der, Yang, Yau-Bin, Liu, Yang-Guang, Tsai, Meng-Yen, Lin, Min-Ju, Tu, Wei-Da
• Primary Examiner(s): Dunn, Darrin
• Application Number:
  US14/306,494
• Publication Number:
  US 20150168964A1
• Time in Patent Office: 1,337 Days
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 11/58 using Internet communication
• CPC Class Codes: F24F 11/61 using timers
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: F24F 11/64 using pre-stored data
• CPC Class Codes: G05D 23/1917 using digital means

Abstract

The present disclosure discloses a controlling device and method for a Heating Ventilation and Air Conditioning system. The controlling device includes a building heat load module, a data collecting module, an optimization module, and a controller. A building heat load model is established according to building envelope data. Field information data and setup data are collected. The building heat load model, the field information data, and the setup data are integrated to produce optimal setup data by optimal computation. According to the optimal setup data, the HVAC system proceeds to modulate room temperature, room humidity, or gas concentration to achieve functions of maintaining indoor thermal comfort and energy conservation.

Claims

1. A controlling device used for a heating, ventilation and air conditioning (HVAC) system that modulates an indoor environment of a building, the controlling device comprising:

a building heat load module configured for establishing a building heat load model according to building envelope data, wherein the building envelope data are properties of building material used for forming an indoor space, and an area value of the building material, and a calculation for establishing the building heat load model is

2. The controlling device of claim 1, further comprising a database that stores the building envelope data.

3. The controlling device of claim 1, further comprising:

a sensor that senses the indoor environment to produce the field information data; and

a setting device that sets the indoor environment to produce the setup data.

4. The controlling device of claim 1, further comprising a communication module, for the building heat load module which is located in a remote area, to transmit data to the optimization module through the communication module.

5. The controlling device of claim 1, further comprising a communication module, for the building heat load module and the optimization module which are located in a remote area, to transmit data to the controller and the data collecting module through the communication module.

6. The controlling device of claim 1, wherein the field information data further includes gas concentration, room temperature, or room humidity, and the setup data is a predetermined indoor temperature.

7. The controlling device of claim 6, wherein as the gas concentration exceeds a predetermined value, the data collecting module transmits to the controller an information indicating that the gas concentration is high, and the controller controls the HVAC system to modulate indoor gas concentration to a predetermined value, and the data collecting module continues collecting data of the gas concentration when the gas concentration is below the predetermined value.

8. The controlling device of claim 6, wherein the optimization model produces the optimal setup data by an optimal computation and transmits the optimal setup data to the controller, and the controller controls, based on the optimal setup data, the HVAC system to modulate the indoor temperature, the indoor humidity, and air flow output of the HVAC system to maintain thermal comfort of the indoor environment and to control power consumption of the HVAC system.

9. The controlling device of claim 1, wherein the optimization module uses a control algorithm based on Linear Quadratic Regulator or Linear Quadratic Gaussian to proceed the optimizing computing.

10. The controlling device of claim 9, wherein the control algorithm is H2, H∞

, or hybrid type H2/H∞

.

11. The controlling device of claim 2, further comprising a communication module that receives the building envelope data stored in the database and transmits the building envelope data to the building heat load module.

12. The controlling device of claim 11, wherein the database is located in a cloud base, and transmits data through the Internet to a control equipment that integrates the data collecting module, the communication module, the building heat load module, the optimization module, and the controller.

13. The controlling device of claim 11, wherein the building heat load module and the database are located in a cloud base and transmit data through the Internet to a control equipment that integrates the data collecting module, the communication module, the optimization module, and the controller.

14. The controlling device of claim 11, wherein the building heat load module, the optimization module, and the database are located in a cloud base, and transmit data through the Internet to a control equipment that integrates the data collecting module, the communication module, and the controller.

15. A controlling method used for an HVAC system that modulates an indoor environment of a building, the method comprising:

collecting building envelope data to establish a building heat load model, and collect field information data and setup data, wherein the building envelope data are properties of building material used for forming an indoor space, and an area value of the building material, and a calculation for establishing the building heat load model is

16. The controlling method of claim 15, wherein the field information data further includes gas concentration, room temperature, or room humidity, and the setup data is a predetermined indoor temperature.

17. The controlling method of claim 15, wherein the optimal setup data is obtained by using a control algorithm based on Linear Quadratic Regulator or Linear Quadratic Gaussian to proceed the optimizing computing.

18. The controlling method of claim 17, wherein the control algorithm is H2, H∞

, or hybrid type H2/H∞

.