Method and apparatus for calculating energy efficiency of refrigerating machine room, and electronic device
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Solution Overview
Problem
Existing refrigeration machine rooms have low energy efficiency, with a Coefficient of Performance (COP) typically below 3.5, and current simulation methods for energy efficiency are imprecise, lacking credibility in project evaluations.
Innovation Solution
A refined method and device for calculating energy efficiency that includes hourly load calculations, power consumption determination of chiller units, water pumps, and cooling towers, and energy efficiency ratio calculations, utilizing optimized pipeline designs and automatic control systems to achieve precise simulation analysis throughout a year.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manufacturers use self-developed simulation programs for energy efficiency calculation, then the calculation process can be completed, but the calculation precision and credibility are insufficient
Solution Approach 1:
The patent changes the calculation parameters from generic simulation values to specific hourly parameters including hourly cooling load, hourly power consumption of chiller unit, water pump, and cooling tower. This parameter transformation enables precise calculation of hourly energy efficiency ratios throughout the year, resolving the contradiction between calculation completeness and precision/credibility
Solution Approach 2:
The patent segments the energy efficiency calculation into hourly intervals throughout the year, calculating cooling load and power consumption for each hour separately. This segmentation approach transforms a single imprecise simulation into multiple precise hourly calculations, thereby improving both measurement precision and result credibility
2Use of energy by moving object
If the refrigeration machine room operates with traditional systems, then the system can function, but the energy efficiency (COP) does not exceed 3.5
Solution Approach 1:
The patent implements feedback control by calculating the hourly energy efficiency ratio and comparing it against target values (5.0-6.0). The system uses this feedback to identify optimization opportunities and adjust operations, transforming the energy efficiency from a static parameter to a dynamically optimized performance metric
Solution Approach 2:
The patent transitions from static system operation to dynamic optimization by performing hourly calculations throughout the year. The system dynamically adjusts and optimizes the operation of chiller units, water pumps, and cooling towers based on varying cooling loads and environmental conditions, enabling COP to reach 5.0-6.0 instead of being limited to 3.5
Data Source
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AI summary
A method and apparatus for processing the energy efficiency of a refrigerating machine room, and an electronic device. The method for processing the energy efficiency of a refrigerating machine room comprises: calculating a time-by-time cold load of a cold supply region, wherein the time-by-time cold load of the cold supply region represents a refrigeration amount of a refrigerating machine room in each time period; determining the time-by-time cold water unit power consumption, time-by-time water pump power consumption and time-by-time cooling tower power consumption of the refrigerating machine room; and calculating the energy efficiency of a water system of the refrigerating machine room on the basis of the time-by-time cold load, the time-by-time cold water unit power consumption, the time-by-time water pump power consumption and the time-by-time cooling tower power consumption.