Method and apparatus for controlling the conditioning mode of a climate control device
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Solution Overview
Problem
Existing climate control systems struggle to efficiently switch between heating and cooling modes to meet the varying demands of multiple zones, often resulting in prolonged discomfort and increased energy consumption due to inefficient mode switching and inadequate control processes.
Innovation Solution
An improved process for controlling the conditioning mode of a climate control system that assesses temperature deviations and durations to determine integrated error values for each zone, aggregates these errors, and adjusts the mode based on comparisons between cooling and heating mode errors, allowing for more accurate and efficient mode switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a voting system is used to determine conditioning mode switching, then the system allows zone requests to be considered, but the system fails to adequately control the switching timing resulting in prolonged discomfort and increased energy consumption
Solution Approach 1:
The system performs preliminary assessment of temperature deviations and their durations before switching conditioning modes. By calculating integrated error values that accumulate temperature deviations over time, the system prepares switching decisions in advance based on predicted discomfort levels, rather than reacting only after zones have been in the wrong mode for too long.
Solution Approach 2:
The system continuously monitors temperature deviations in each zone and feeds this information back into the decision-making process. The integrated error calculation provides real-time feedback on the cumulative impact of wrong-mode operation, enabling dynamic adjustment of switching timing to minimize both discomfort and energy consumption.
2Adaptability or versatility
If the climate control device switches conditioning modes frequently to meet varying zone demands, then zone comfort requirements are better met, but the system components are overused leading to maintenance issues
Solution Approach 1:
The system calculates integrated error values that accumulate temperature deviations over time before triggering a mode switch. This preliminary accumulation process sets a threshold that must be exceeded before switching occurs, preventing premature or unnecessary switching while still responding adequately to genuine comfort needs.
Solution Approach 2:
The system dynamically adjusts the switching decision based on the rate of change of integrated error values. By monitoring how quickly temperature deviations are accumulating, the system can differentiate between transient fluctuations that don't warrant switching and sustained deviations that do, thereby optimizing switch frequency to balance comfort with component durability.
3Device complexity
If the climate control device provides a single type of conditioning to all zones, then the system operation is simplified, but zones requiring different conditioning types receive incorrect conditioning
Solution Approach 1:
The system segments the multi-zone system into cooling-demand zones and heating-demand zones, calculating separate integrated error values for each segment. This segmentation allows the central device to identify when a mix of cooling and heating requests exists, triggering appropriate mode switching to serve both types of zones correctly.
Solution Approach 2:
The system changes the conditioning mode parameter of the central device based on the dominant demand pattern detected across zones. By monitoring the aggregate integrated error values for cooling versus heating zones, the system dynamically adjusts the single conditioning mode parameter to match the predominant zone requirements, thereby simplifying operation while improving adaptability.
Data Source
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AI summary
An apparatus and method for controlling the conditioning mode of a climate control device, such as a rooftop unit, that is servicing multiple connected terminal unit. The improved process may include determining a conditioning mode error for the connected terminal units. The conditioning mode error may be an integrated error value that is based on a temperature deviation integrated over the duration of the temperature deviation. The process may also determine a cooling mode error and a heating mode error. The cooling mode error and the heating mode error may be based on the conditioning mode error for the terminal units associated with cooling conditions and heating conditions, respectively. The process may further compare the cooling mode error and the heating mode error, and it may also adjust the conditioning mode of the climate control device based on the comparison.