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Self-driving building energy engine

  • US 10,545,525 B2
  • Filed: 03/12/2018
  • Issued: 01/28/2020
  • Est. Priority Date: 11/28/2011
  • Status: Active Grant
First Claim
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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.

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