Zoned Airflow Mixing for Uniform Multiroom Temperature Control
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Solution Overview
Problem
Conventional air conditioning systems face challenges in maintaining uniform room temperatures while saving energy, particularly in coping with variations in solar radiation and occupant load, and in adjusting temperatures to individual preferences.
Innovation Solution
The system employs a return compartment with air blowers having a total blast volume greater than the conditioned air volume, mixing conditioned and discharged air to achieve uniform temperature, and adjusts the DC motor's rotation speed based on air conditioning load to optimize energy use and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the total blast volume of air blowers is made greater than air conditioning blast volume, then uniform temperature distribution and energy saving are achieved, but the ability to adapt to individual room temperature preferences and load variations is lost
Solution Approach 1:
The system divides the air blowing function into multiple independent air blowers, each serving specific rooms or zones. This segmentation allows individual control of each blower's rotation speed, enabling adaptation to different room requirements while maintaining overall energy efficiency through coordinated operation of all blowers
Solution Approach 2:
The system dynamically adjusts the rotation speed of air blowers based on real-time temperature feedback from thermometers in each room. The control section continuously monitors temperature conditions and modifies blower speeds accordingly, allowing the system to adapt to changing load conditions, solar radiation, and individual room preferences while maintaining energy efficiency
2Device complexity
If the blast volume of air blowers is fixed, then system simplicity is maintained, but the ability to respond to changes in solar radiation and occupant load is reduced
Solution Approach 1:
The system incorporates thermometers in each room that continuously measure temperature conditions. The control section receives this feedback information and automatically adjusts the rotation speed of air blowers to maintain optimal temperature conditions, enabling the system to respond dynamically to environmental changes without requiring complex manual intervention
Solution Approach 2:
The control section automatically regulates air blower operation based on temperature feedback from thermometers, eliminating the need for manual adjustment. The system serves itself by autonomously adapting to changing conditions such as solar radiation and occupant load variations while maintaining simple overall system architecture
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 approach allows for efficient, energy-saving air conditioning that quickly and reliably maintains comfortable temperatures in each room, adapting to changes in solar radiation and occupant load, while ensuring uniformity and individual temperature preferences.
Implementation Method 1
a blowing section which sends air into each of the rooms and has a DC motor
Implementation Method 2
at least one air conditioning section are placed in the return compartment... mixing conditioned and discharged air to achieve uniform temperature
Data Source
AI summary
In an air conditioning system, a return compartment which is adjacent to a plurality of rooms 13, 14, 15 is formed in a building 1, the respective rooms 13, 14, 15 are provided with air intake sections 18a, 18b, 18c, 18d which spout air sent from a blowing section 40a, 40b, 40c 40d having a DC motor, an exhaust section 52 which forms exhausting current directed from the respective rooms 13, 14, 15 toward the return compartment is provided between the respective rooms 13, 14, 15 and the return compartment, the plurality of blowing sections 40a, 40b, 40c 40d and at least one air conditioning section 30a are placed in the return compartment, a total blast volume of the plurality of blowing sections 40a, 40b, 40c 40d is greater than a conditioned air volume of the air conditioning section 30a, and a blast volume of the blowing section 40a, 40b, 40c 40d is adjusted by an air conditioning load of the room 13, 14, 15. According to this, it is possible to provide the air conditioning system 29 having a relatively simple configuration, capable of changing temperature in the respective rooms 13, 14, 15 and coping with load variation caused by solar radiation if necessary, while comfortably and uniformly keeping temperature of the entire house with saved energy.