Electronically based control valve with feedback to a building management system (BMS)
According to one embodiment of the invention, a method for regulating temperature in a system comprises receiving, at a building management system, information concerning a degree of opening of a plurality of control valves. Each of the plurality of control valves is associated with at least one terminal that is in communication with a supply header line of a system, and is operable to open or close according to its own logic based on the demand of the associated terminal or terminals. A determination is made, based on the degree of opening of the plurality of control valves, as to whether changes need to be made to the operating parameters of production equipment of the system. The changes to the production equipment operation of the system are operable to change at least one parameter of a fluid being supplied to the supply header line of the system. An initiation of changes is made if it is determined that the change needs to be made. The changes in the production equipment yield a difference in the at least one parameter of the fluid.
1. A method for regulating temperature in a system, the method comprising:
receiving, at a building management system, information concerning stem positions of a plurality of control valves, the plurality of control valves each being associated with at least one of a plurality of terminals, each of the plurality of terminals being in communication with a supply header line of a hydronic system, the hydronic system comprising production equipment supplying a fluid to the header line;
determining, based on the information concerning stem positions of the plurality of control valves, whether changes need to be made to the production equipment of the hydronic system, wherein the changes to the production equipment of the hydronic system change at least one parameter of the fluid being supplied to the supply header line of the hydronic system; and
making a change to the production equipment in response to determining that changes need to be made, the change to the production equipment yielding a difference in the at least one parameter of the fluid, wherein:
making a change to the production equipment includes at least one of the following:
changing a temperature of a chiller supplying the fluid to the supply header line of the hydronic system;
changing a temperature of a heater supplying the fluid to the supply header line of the hydronic system; or
changing a speed of at least one pump supplying fluid to the supply header line of the hydronic system, and
at least one of the plurality of control valves is positioned between at least one of the plurality of terminals and a return header line and maintains a substantially constant temperature of fluid provided to the return header line.
2. The method of claim 1 , wherein determining whether changes need to be made to the production equipment of the hydronic system includes a consideration that a temperature of the fluid in the hydronic system should not exceed threshold parameters of a humidity control scheme.
3. The method of claim 1 , wherein at least some of the information received is communicated using a relay technique.
4. The method of claim 1 , wherein at least some of the information received at the building management system is communicated wirelessly.
5. A method for regulating temperature in a system, the method comprising:
receiving, at a building management system, information concerning a degree of opening of a plurality of control valves, the plurality of control valves each being associated with at least one of a plurality of terminals, each of the plurality of terminals being in communication with a supply header line of a hydronic system, the hydronic system comprising production equipment supplying a fluid to the header line;
determining, based on the information concerning the degree of opening of the plurality of control valves, whether changes need to be made to the production equipment of the hydronic system, wherein the changes to the production equipment of the hydronic system change at least one parameter of the fluid being supplied to the supply header line of the hydronic system; and
making a change to the production equipment in response to determining that changes need to be made, wherein making a change to the production equipment yields a difference in the at least one parameter of the fluid.
6. The method of claim 5 , wherein making a change to the production equipment includes initiating a change to a speed of at least one pump supplying fluid to the supply header line of the hydronic system.
7. The method of claim 5 , wherein making a change to the production equipment includes one of the following:
changing a temperature of a chiller supplying the fluid to the supply header line of the hydronic system; or
changing a temperature of a heater supplying the fluid to the supply header line of the hydronic system.
8. The method of claim 5 , wherein making a change to the production equipment includes:
changing a temperature of a heater supplying the fluid to the supply header line of the hydronic system, and
changing a speed of at least one pump supplying fluid to the supply header line of the hydronic system.
9. The method of claim 5 , wherein
at least one of the plurality of control valves is positioned between at least one of the plurality of terminals and a return header line; and
the at least one of the plurality of control valves is operable to maintain a substantially constant temperature of fluid provided to the return header line.
10. The method of claim 5 , wherein the information concerning the degree of opening of the plurality of control valves is a stem position of each of the plurality of control valves.
11. The method of claim 5 , wherein at least some of the information received at the building management system is communicated wirelessly.
12. The method of claim 5 , wherein at least some of the information received at the building management system is communicated using a relay technique.
13. The method of claim 5 , wherein determining whether changes need to be made to production equipment of the hydronic system includes a consideration that a temperature of the fluid in the hydronic system should not exceed threshold parameters of a humidity control scheme.
14. A system for regulating temperature, the system comprising logic encoded in a computer-readable media such that when executed is operable to:
receive information concerning a degree of opening of a plurality of control valves, the plurality of control valves each being associated with at least one of a plurality of terminals, each of the plurality of terminals being in communication with a supply header line of a hydronic system, the hydronic system comprising production equipment supplying a fluid to the header line;
determine, based on the information concerning the degree of opening of the plurality of control valves, whether changes need to be made to the production equipment of the hydronic system, wherein the changes to the production equipment of the hydronic system change at least one parameter of the fluid being supplied to the supply header line of the hydronic system
making a change to the production equipment in response to determining that changes need to be made, wherein making a change to the production equipment yields a difference in the at least one parameter of the fluid.
15. The system of claim 14 , wherein making a change to the production equipment includes initiating a change to a speed of at least one pump supplying fluid to the supply header line of the hydronic system.
16. The system of claim 14 , wherein making a change to the production equipment includes on of the following:
initiating a change to a temperature of a chiller supplying the fluid to the supply header line of the hydronic system; or
initiating a change to a temperature of a heater supplying the fluid to the supply header line of the hydronic system.
17. The system of claim 14 , wherein making a change to the production equipment include:
initiating a change to one of the following:
a temperature of one of a chiller supplying the fluid to the supply header line of the hydronic system; or
a temperature of a heater supplying the fluid to the supply header line of the hydronic system; and
changing a speed of at least one pump supplying fluid to the supply header line of the hydronic system.
18. The system of claim 14 , wherein
at least one of the plurality of control valves is positioned between at least one of the plurality of terminals and a return header line; and
the at least one of the plurality of control valves is operable to maintain a substantially constant temperature of fluid provided to the return header line.
19. The system of claim 14 , wherein the information concerning the degree of opening of the plurality of control valves is a stem position of each of the plurality of control valves.
20. The system of claim 14 , wherein at least some of the information received is communicated wirelessly.
21. The system of claim 14 , wherein at least some of the information received is communicated using a relay technique.
22. The system of claim 14 , wherein determining whether changes need to be made to the production equipment of the hydronic system includes a consideration that a temperature of the fluid in the hydronic system should not exceed threshold parameters of a humidity control scheme.