HVAC Ventilation Timing Control for Air Quality and Thermal Comfort
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Solution Overview
Problem
Existing air-conditioning systems fail to consider air quality control and ventilation operation, particularly in environments without forced ventilation, leading to inadequate thermal comfort and inefficient energy use.
Innovation Solution
A system and method that integrates sensors for temperature, CO2, VOC, and pollution detection, along with a control unit to manage ventilation based on predefined parameters and environmental conditions, optimizing activation and deactivation times to enhance thermal comfort and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air-conditioning systems are managed using known methods, then temperature control is optimized, but air quality control is disregarded
Solution Approach 1:
The patent combines the air-conditioning system management with air quality control by integrating sensors (CO2, VOC, pollution detectors) and a control unit that simultaneously manages both temperature and air quality parameters, creating a unified system that addresses multiple environmental factors together
Solution Approach 2:
The control system is designed to perform multiple functions: temperature regulation, air quality monitoring, and ventilation management, making it applicable to various environments (flats, offices, business premises) regardless of whether they have forced ventilation systems, thereby providing a universal solution
2Adaptability or versatility
If known methods are applied to environments without forced ventilation, then system applicability is limited, but thermal comfort is inadequate
Solution Approach 1:
The system is designed to work in environments with or without forced ventilation by using natural ventilation detection and control, allowing it to be universally applied across different building types while maintaining thermal comfort through adaptive management of ventilation timing and duration
Solution Approach 2:
The system anticipates temperature variations by monitoring air quality parameters and environmental conditions in advance, pre-calculating optimal ventilation timing to prevent thermal discomfort before it occurs, rather than merely reacting to temperature changes after they happen
3Object-affected harmful factors
If ventilation systems are integrated into air-conditioning systems, then air quality control is improved, but device complexity increases
Solution Approach 1:
The control unit is designed to manage multiple functions (temperature control, air quality monitoring, ventilation timing) through a single integrated system, avoiding the need for separate complex systems while achieving comprehensive environmental management across different building types
Data Source
Figure 1
AI summary
A method for managing an air conditioning system (100) of an environment, wherein the environment is provided with ventilation means (101) of the natural and/or forced type, comprises the steps of detecting an inner temperature (T) of an environment before activating the ventilation means (101); defining a significant temperature variation (ΔT_s) that the system (100) can obtain when the ventilation means (101) are activated and a significant variation time (t_vs) as the time taken by the system (100) to achieve the significant temperature variation (ΔT_s); setting an activation time (tv_on) of the ventilation means (101); setting a deactivation time (tv_off) of the ventilation means (101); calculating a switch-off time of the system (t_boost) as a function of at least the deactivation time (tv_off) of the ventilation means (101), the inner temperature (T), the minimum temperature (T_min) and a temperature variation rate when the ventilation means (101) are deactivated (vT_close).