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Patent US10545525
Issued 2020-01-28
Self-driving Building Energy Engine
Systems and methods dynamically assess energy efficiency by obtaining a minimum energy consumption of a system, receiving in a substantially continuous way a measurement of actual energy consumption of the system, and comparing the minimum energy consumption to the measurement of actual energy consumption to calculate a substantially continuous energy performance assessment. The system further provides at least one of a theoretical minimum energy consumption based at least in part on theoretical performance limits of system components, an achievable minimum energy consumption based at least in part on specifications for high energy efficient equivalents of the system components, and the designed minimum energy consumption based at least in part on specifications for the system components.
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- 1. A method to dynamically assess and control energy efficiency of a chiller installed in a facility that includes installed building systems, subsystems, and components, the method comprising:
obtaining, with computer hardware including at least one computer processor and computer-readable storage, a minimum energy consumption of the chiller wherein obtaining the minimum energy consumption comprises:
obtaining a theoretical minimum energy consumption of the chiller based at least in part on theoretical efficiency limits of the chiller;
obtaining an achievable energy consumption of the chiller based at least in part on specifications associated with high energy-efficiency equivalents of the chiller; and
obtaining a designed minimum energy consumption of the chiller based at least in part on specifications associated with the installed chiller;
receiving, at least once a minute, a measurement of an actual energy consumption of one or more of the chiller, installed building systems, subsystems, and components, wherein receiving the measurement of the actual energy consumption comprises:
receiving, with a first analog input/output module, first data associated with the one or more of the chiller, installed building systems, subsystems and components, the first data having a first protocol;
receiving, with a second analog input/output module, second data associated with the one or more of the chiller, installed building systems, subsystems and components, the second data having a second protocol different from the first protocol;
sampling, at least once a minute, the first and second data to provide first and second digital data; and
transmitting at least one of the first and second digital data over a network having a protocol different from the first and second protocols; and
comparing, with the computer hardware, the minimum energy consumption to the measurement of the actual energy consumption to calculate an energy performance assessment that is based on theoretical, achievable, and designed energy efficiencies of the chiller, wherein comparing the minimum energy consumption to the measurement of the actual energy consumption comprises:
comparing, at least once a minute, the theoretical minimum energy consumption to the measurement of the actual energy consumption to determine the theoretical energy efficiency;
comparing, at least once a minute, the achievable minimum energy consumption to the measurement of the actual energy consumption to determine the achievable energy efficiency; and
comparing, at least once a minute, the designed minimum energy consumption to the measurement of the actual energy consumption to determine the designed energy efficiency.
- 11. An apparatus to dynamically assess energy usage of a chiller installed in a facility, the apparatus comprising:
an energy management system including at least one computer processor, the energy management system configured to obtain a minimum energy consumption of the chiller and the facility that includes installed building systems, subsystems, and components, wherein obtaining the minimum energy consumption comprises:
obtaining, with the at least one computer processor, a theoretical minimum energy consumption of the chiller based at least in part on theoretical efficiency limits of the chiller;
obtaining, with the at least one computer processor, an achievable energy consumption of the chiller based at least in part on specifications associated with high energy-efficiency equivalents of the chiller; and
obtaining, with the at least one computer processor, a designed minimum energy consumption of the chiller based at least in part on specifications associated with the chiller;
a plurality of measurement devices configured to measure, at least once a minute, an actual energy consumption of one or more of the chiller, installed building systems, subsystems, and components; the energy management system including a first analog input/output module and a second analog input/output module, the energy management system further configured to receive the measurement of the actual energy consumption of the one or more of the chiller, installed building systems, subsystems and components, wherein receiving the measurement of the actual energy consumption comprises:
receiving, with the first analog input/output module, first data associated with the one or more of the chiller, installed building systems, subsystems and components, the first data having a first protocol;
receiving, with the second analog input/output module, second data associated with the one or more of the chiller, installed building systems, subsystems and components, the second data having a second protocol different from the first protocol;
sampling, at least once a minute, the first and second data to provide first and second digital data; and
transmitting at least one of the first and second digital data over a network having a protocol different from the first and second protocols; and
the energy management system further configured to compare, with the at least one computer processor, the minimum energy consumption to the measurement of the actual energy consumption to calculate an energy performance assessment that is based on theoretical, achievable, and designed energy efficiencies of the chiller, wherein comparing the minimum energy consumption to the measurement of the actual energy consumption comprises:
comparing, at least once a minute, the theoretical minimum energy consumption of the chiller to the measurement of the actual energy consumption to determine the theoretical energy efficiency;
comparing, at least once a minute, the achievable minimum energy consumption of the chiller to the measurement of the actual energy consumption to determine the achievable energy efficiency; and
comparing, at least once a minute, the designed minimum energy consumption of the chiller to the measurement of the actual energy consumption to determine the designed energy efficiency.
