Air-conditioning system controlling evaporating temperatures of indoor units and ventilator
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Solution Overview
Problem
Conventional air-conditioning systems set a low target evaporating temperature based on detection values from areas with high air-conditioning loads and low priority, limiting the increase of evaporating temperature, which hinders operating efficiency and energy savings without compromising comfort.
Innovation Solution
An air-conditioning system with a refrigerant system and a control device that adjusts the target evaporating temperature based on detection values from specific criteria, excluding detection values from areas with low air-conditioning priority to optimize energy savings without affecting comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a low target evaporating temperature is set based on detection values from areas with high air-conditioning load and low priority, then comfort is maintained in those areas, but operating efficiency and energy savings are hindered
Solution Approach 1:
The patent segments the air-conditioned space into multiple areas with different priorities (high priority and low priority areas). The control device selectively uses detection values only from high priority areas to set the target evaporating temperature, while excluding low priority areas. This segmentation allows the system to optimize for energy efficiency in low priority areas while maintaining comfort through selective data utilization.
2Productivity
If the evaporating temperature is increased to improve operating efficiency, then energy savings are achieved, but indoor humidity rises due to insufficient latent heat handling, leading to decreased comfort
Solution Approach 1:
The patent implements dynamic adjustment of the target evaporating temperature based on real-time detection values from high priority areas. The control device continuously monitors temperature and humidity conditions in high priority areas and adjusts the evaporating temperature dynamically. This dynamic approach allows the system to increase evaporating temperature for energy efficiency when conditions permit, while maintaining comfort by responding to actual conditions in high priority areas.
3Measurement precision
If detection values from all areas are used to set target evaporating temperature, then comprehensive coverage is achieved, but the target evaporating temperature is set lower than necessary, limiting energy savings
Solution Approach 1:
The patent extracts only the necessary detection values from high priority areas, excluding detection values from low priority areas. The control device is configured to identify and use only detection values from areas with high air-conditioning priority, effectively taking out the relevant information needed for optimal evaporating temperature setting while discarding data from low priority areas that would unnecessarily constrain the temperature setting.
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 energy savings by adjusting the evaporating temperature based on relevant detection values, enhancing operating efficiency without compromising comfort by excluding areas with low air-conditioning priority from the temperature and humidity calculations.
Implementation Method 1
a temperature and humidity detection unit configured to detect a temperature and a humidity of air in an air-conditioned space
Implementation Method 2
a temperature and humidity detection unit configured to detect a temperature and a humidity of air in an air-conditioned space
Implementation Method 3
a refrigerant system in which an outdoor unit, one or more indoor units, and one or more ventilators are connected by a refrigerant pipe and in which refrigerant circulates
Implementation Method 4
a first expansion valve, an indoor heat exchanger, a second expansion valve
Data Source
AI summary
An air-conditioning system includes a refrigerant system in which an outdoor unit, one or more indoor units, and one or more ventilators are connected by a refrigerant pipe and in which refrigerant circulates, and a control device configured to control the refrigerant system. The control device includes a target temperature adjustment unit configured to adjust a target evaporating temperature based on a detection value detected by a temperature and humidity detection unit provided to at least one of the indoor unit and the ventilator that satisfies a specific criterion, and an air-conditioning control unit configured to control the refrigerant system such that the evaporating temperature of each of the indoor unit and the ventilator is equal to the target evaporating temperature adjusted by the target evaporating temperature.