AHU Return-Air Mixing for Efficient Ventilation Temperature Control
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Solution Overview
Problem
Current air conditioning systems face inefficiencies in heating and cooling while also lacking effective ventilation and temperature control, particularly in buildings without windows or with small windows, which affects indoor comfort and energy usage.
Innovation Solution
An air conditioning system comprising an air handling unit (AHU) that controls outdoor, return, and exhaust air, a controller for communication with outdoor units, and an interface unit for monitoring and control, enabling efficient temperature regulation and ventilation by mixing and exchanging air to optimize indoor conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air conditioning system controls temperature by discharging cool or hot air, then indoor temperature is regulated, but energy consumption increases and heat efficiency decreases
Solution Approach 1:
The patent combines the air conditioning function with ventilation function into a single integrated system. The air handling unit (AHU) performs both temperature control and fresh air supply, eliminating the need for separate systems and reducing overall energy consumption while maintaining effective temperature regulation.
Solution Approach 2:
The air handling unit is designed to perform multiple functions simultaneously: it conditions return air for temperature control, introduces outdoor air for ventilation, and discharges exhaust air. This multi-functionality improves heat efficiency by optimizing air flow paths and reducing redundant operations.
2Adaptability or versatility
If air conditioning system is combined with ventilation system, then indoor environment comfort is improved, but device complexity increases
Solution Approach 1:
The patent merges the ventilation system and air conditioning system into a single integrated air handling unit. The AHU combines outdoor air intake, return air handling, exhaust air discharge, and temperature control functions in one device, reducing overall system complexity while improving adaptability for comprehensive indoor environment control.
Solution Approach 2:
The air handling unit is designed as a universal device that performs multiple functions: fresh air supply, return air conditioning, exhaust air discharge, and temperature regulation. This multi-functional design simplifies the overall system architecture while enhancing the ability to control various aspects of the indoor environment.
3Loss of energy
If air conditioning system operates without return air circulation, then equipment maintenance is simplified, but heat efficiency decreases
Solution Approach 1:
The patent implements continuous return air circulation that constantly recovers and reuses conditioned air. This continuous circulation maximizes heat efficiency by maintaining optimal temperature and humidity levels, while the integrated design ensures that the circulation system is streamlined for ease of maintenance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system improves heat efficiency, reduces energy consumption, and enhances management convenience by allowing real-time monitoring and control of air conditioning operations, providing a comfortable indoor environment through effective temperature and ventilation management.
Implementation Method 1
when a high-temperature and high-pressure liquid refrigerant is supplied from the compressor of the outdoor unit to the indoor unit through the heat exchanger of the outdoor unit, the refrigerant is expanded by the heat exchanger of the indoor unit and evaporated
Implementation Method 2
the fan of the indoor unit is rotated, and thus cold air is discharged to the interior of a room
Data Source
AI summary
Disclosed herein is an air conditioning system. The conditioning system includes an air handling unit (AHU) configured to control outdoor air that is externally supplied, exhaust air that is outdoors discharged, and return air that is circulated indoors and supplied again, control the outdoor air or mixed air of the return air and the outdoor air at a set temperature, and supply cool/warm supply air indoors, at least one outdoor unit configured to supply a heat source for a heat exchange to the AHU, a controller configured to receive operating state data of the AHU and control an operation of the AHU through communication with the outdoor unit, and an interface unit connected to the controller and configured to output a control menu of the AHU, send data received through the control menu to the controller, and output a monitoring screen for the operating state of the AHU and the outdoor unit.