Air conditioning system
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Solution Overview
Problem
Air conditioning systems face challenges in managing condensation of moisture during cooling operations, leading to excessive water discharge, which existing systems attempt to mitigate by setting the refrigerant evaporation temperature above the dew-point temperature, but this may not fully address the issue of concurrent heating and humidification requirements.
Innovation Solution
The air conditioning system incorporates a control device that adjusts the supplied air temperature, flow rate, water flow rate, and cooling temperature based on dehumidification information, operation state, temperature, and humidity information to optimize the heating and humidifying operations, ensuring appropriate air conditioning in a target space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the refrigerant evaporation temperature is set higher than or equal to the dew-point temperature to suppress condensation, then the amount of water discharge is reduced, but the cooling efficiency and ability to meet target temperature and humidity requirements deteriorate
Solution Approach 1:
The system dynamically adjusts the refrigerant evaporation temperature parameter based on real-time indoor temperature and humidity measurements. By changing this parameter adaptively rather than fixing it above dew-point, the system maintains cooling effectiveness while reducing excessive condensation. The control device calculates the actual dew-point temperature and sets the evaporation temperature appropriately to balance cooling performance and condensation control.
Solution Approach 2:
The system implements feedback control by continuously monitoring indoor temperature and humidity, calculating the dew-point temperature, and adjusting the refrigerant evaporation temperature accordingly. This closed-loop control ensures that the evaporation temperature is optimized in real-time to prevent excessive condensation while maintaining effective cooling operation.
2Adaptability or versatility
If the outdoor air handler performs heating humidifying operation concurrently with air conditioner cooling operation, then both heating and cooling requirements are met, but condensation in the air conditioner increases leading to excessive water discharge
Solution Approach 1:
The control device continuously monitors indoor temperature and humidity conditions, and adjusts the refrigerant evaporation temperature based on feedback from these measurements. This allows the system to maintain effective cooling operation while preventing excessive condensation even when the outdoor air handler is performing heating humidifying operation concurrently.
Solution Approach 2:
The system dynamically changes the refrigerant evaporation temperature parameter based on real-time indoor environmental conditions. By adapting this parameter to the actual cooling load and humidity levels, the system can concurrently perform heating humidification and cooling operations without generating excessive condensation water.
3Quantity of substance
If the air conditioner sets evaporation temperature above dew-point to reduce condensation, then water discharge is suppressed, but the system cannot fully meet target temperature and humidity requirements
Solution Approach 1:
The control device uses feedback from indoor temperature and humidity sensors to dynamically adjust the refrigerant evaporation temperature. This feedback mechanism allows the system to achieve precise control of target temperature and humidity while minimizing condensed water generation, rather than using a fixed conservative temperature setting.
Solution Approach 2:
The system dynamically changes the evaporation temperature parameter based on actual indoor conditions and calculated dew-point temperature. This parameter adaptation enables the system to meet target temperature and humidity requirements with high precision while suppressing excessive condensation water generation.
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 effectively reduces condensation in the air conditioner, maintains desired temperature and humidity levels, and adjusts the system's capacity to prevent excessive water discharge, enhancing the overall performance of the air conditioning system during concurrent heating and cooling operations.
Implementation Method 1
an air conditioner (20) configured to treat indoor air taken in from the target space (SP1) and supply the treated air to the target space (SP1)
Implementation Method 2
even though a humidification apparatus is humidifying indoor air, moisture in air may condense in the air conditioner and may be discharged as drain water to outside a room
Implementation Method 3
an outdoor air handler (10) configured to treat taken-in outdoor air and supply the treated air to a target space (SP1)
Implementation Method 4
the outdoor air handler (10) performs a heating humidifying operation for heating and humidifying the outdoor air
Data Source
AI summary
When an outdoor air handler performs a heating humidifying operation and an air conditioner performs a cooling operation, a control device adjusts at least one of a to-be-supplied air temperature of the outdoor air handler, a to-be-supplied air flow rate of the outdoor air handler, a to-be-supplied water flow rate of the outdoor air handler, and a cooling temperature that is a temperature at an air heat exchanger of the air conditioner. The control device adjusts the to-be-supplied air temperature and the cooling temperature on the basis of dehumidification information, operation information, temperature information, and humidity information. The operation information is information regarding an operating state of the air conditioner.