Profile based method for deriving a temperature setpoint using a 'delta' based on cross-indexing a received price-point level signal
First Claim
1. A method for controlling the energy usage in a building having controllers responsible for subsystems in the building comprising:
- responding to a rate change signal received by a utility by controlling variable loads with reference to a profile of “
deltas”
stored for each possible rate change, by a) looking up the appropriate delta for each variable load, b) submitting the appropriate delta to the controller for that subsystem in such a way that c) the controller for that subsystem responds by assuming the setpoint is modified by the delta.
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Abstract
A method for adjusting a plurality of controlled subsystems in a building or plant that facilitates cooperative energy usage with a utility provider. By referring to a single profile of adjustments that correspond to changes in the value of a utility signal and distributing this to each relevant controller for each subsystem, a single setback delta can be applied to each subsystem for each change in utility signal value (i.e., pricing information). Alternatively, multiple profiles can be used to provide for firmer control and thereby allow for different zones to respond differently to a single change signal sent by the utility provider.
37 Citations
11 Claims
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1. A method for controlling the energy usage in a building having controllers responsible for subsystems in the building comprising:
responding to a rate change signal received by a utility by controlling variable loads with reference to a profile of “
deltas”
stored for each possible rate change, bya) looking up the appropriate delta for each variable load, b) submitting the appropriate delta to the controller for that subsystem in such a way that c) the controller for that subsystem responds by assuming the setpoint is modified by the delta. - View Dependent Claims (3, 4, 10)
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2. A method for controlling the energy usage in a building having controllers responsible for subsystems in the building comprising:
responding to a rate change signal by controlling variable loads with reference to a profile of deltas stored for each possible rate change, by looking up the value of the appropriate delta for each rate change signal received and submitting that delta to each controller for each subsystem in such a way that each controller responds by assuming the setpoint is modified by the same delta. - View Dependent Claims (5, 6)
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7. A method for cooperatively responding to rate changes initiated by a utility including a prearranged pricing schedule and realtime pricing, including
a) adjusting a “ - delta”
from a user-defined setpoint in accord with a user-defined schedule wheni) a prearranged pricing change occurrence, and ii) upon receipt of a real-time pricing notification signal, b) sending a signal indicative of the appropriate delta after every prearranged pricing change occurrence and upon receipt of a real-time pricing notification signal to each subsystem controller responsive to setpoint changes. - View Dependent Claims (8, 9, 11)
- delta”
Specification