System for analyzing and comparing current and prospective refrigeration packages

A method for analyzing the performance of an operating chiller, the method comprising the steps of:

• (a) for the operating chiller and for each of at least one designated time periods, obtaining real power usage data and at least one set of real tonnage derivation data;
• (b) obtaining design rating information for the operating chiller, the design rating information including the design rated power requirement;
• (c) for the operating chiller, deriving a representative evaporator tonnage for each designated time period, from the real tonnage derivation data for such designated time period;
• (d) for the operating chiller, deriving the actual power requirement from the representative evaporator tonnage and the real power usage data;
• and
• (e) differentiating the actual power requirement for the operating chiller with respect to the design rated power requirement for such chiller.

A computer readable medium containing program instructions for execution on a computer system, which when executed by a computer, cause the computer system to perform method steps for analyzing the performance of an first chiller with respect to the hypothetical design rated performance of at least one other chiller, the method comprising the steps of:

• a) for the first chiller and for each of at least one designated time periods, obtaining real power usage data and at least one set of real tonnage derivation data;
• (b) obtaining other chiller information, including design rating information for each of the other chillers, the design rating information including the design rated power requirement;
• (c) deriving the power requirement difference to operate the first chiller compared to at least one of the other chillers;
• and
• (d) differentiating the future use of the first chiller with respect to the hypothetical future use of the at least one other chiller, based on the power requirement difference.

A computer readable medium containing program instructions for execution on a computer system, which when executed by a computer, cause the computer system to perform method steps for analyzing the performance of an operating chiller, the method comprising the steps of:

• (a) for the operating chiller and for each of at least one designated time periods, obtaining real power usage data and at least one set of real tonnage derivation data;
• (b) obtaining design rating information for the operating chiller, the design rating information including the design rated power requirement;
• (c) for the operating chiller, deriving a representative evaporator tonnage for each designated time period, from the real tonnage derivation data for such designated time period;
• (d) for the operating chiller, deriving the actual power requirement from the representative evaporator tonnage and the real power usage data;
• and
• (e) differentiating the actual power requirement for the operating chiller with respect to the design rated power requirement for such chiller.

A system for analyzing the performance of an first chiller with respect to the hypothetical design rated performance of at least one other chiller, comprising:

• (a) for the first chiller and for each of at least one designated time periods, means for obtaining real power usage data and at least one set of real tonnage derivation data;
• (b) means for obtaining other chiller information, including design rating information for each of the other chillers, the design rating information including the design rated power requirement;
• (c) means for deriving the power requirement difference to operate the first chiller compared to at least one of the other chillers;
• and
• (d) means for differentiating the future use of the first chiller with respect to the hypothetical future use of the at least one other chiller, based on the power requirement difference.

A system for analyzing for analyzing the performance of an operating chiller, comprising:

• (a) for the operating chiller and for each of at least one designated time periods, means for obtaining real power usage data and at least one set of real tonnage derivation data;
• (b) means for obtaining design rating information for the operating chiller, the design rating information including the design rated power requirement;
• (c) for the operating chiller, means for deriving a representative evaporator tonnage for each designated time period, from the real tonnage derivation data for such designated time period;
• (d) for the operating chiller, means for deriving the actual power requirement from the representative evaporator tonnage and the real power usage data;
• and
• (e) means for differentiating the actual power requirement for the operating chiller with respect to the design rated power requirement for such chiller.