Air conditioning controller and air conditioning control method
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Solution Overview
Problem
Many office buildings lack the necessary environmental measurement devices to accurately calculate the Predicted Mean Vote (PMV) for indoor thermal comfort, making it difficult to determine effective air conditioning control settings for energy saving while maintaining comfort.
Innovation Solution
An air conditioning controller that sets an energy saving control level based on the change in inlet temperature of the air conditioner after it has stopped, allowing for energy saving operations without compromising comfort, even in buildings without multiple environmental measurement devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple environmental measurement devices are installed to calculate PMV for accurate thermal comfort control, then thermal comfort control precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts only the essential thermal comfort parameter (inlet temperature) from the full PMV calculation system, eliminating the need for multiple measurement devices (thermometers, humidity meters, air velocity meters) while retaining the core function of determining appropriate air conditioning control settings for thermal comfort
Solution Approach 2:
The inlet temperature measurement serves multiple functions: it indicates thermal comfort conditions, guides energy saving control level selection, and determines air conditioner operation strategies, replacing the need for separate dedicated measurement systems for each function
2Loss of energy
If energy saving control level is increased to reduce power consumption, then energy efficiency is improved, but thermal comfort degradation increases
Solution Approach 1:
The patent implements dynamic adjustment of energy saving control levels based on real-time inlet temperature measurements, allowing the system to adaptively balance energy consumption and thermal comfort by selecting appropriate control levels that respond to actual environmental conditions rather than using fixed settings
Solution Approach 2:
The system uses inlet temperature measurements as feedback to continuously monitor thermal comfort conditions and adjust energy saving control levels accordingly, creating a closed-loop control system that maintains comfort while optimizing energy consumption
Data Source
AI summary
An air conditioning controller includes a control level setting unit to set an energy saving control level of an air conditioner based on an amount of change in inlet temperature of the air conditioner for a certain period of time immediately after stop of the air conditioner, and an energy saving control unit to perform energy saving control of the air conditioner based on the energy saving control level.