Air-conditioning device
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Solution Overview
Problem
Conventional air-conditioning operation control apparatuses do not fully consider factors like air flow rate, degree of superheat, and degree of subcooling when calculating the required capabilities of indoor units, leading to suboptimal operating efficiency and energy conservation.
Innovation Solution
The air-conditioning apparatus calculates the required evaporation or condensation temperatures based on the current heat exchange amounts and operating states, including air flow rates, degrees of superheat, and subcooling, to improve the capability of the usage-side heat exchanger and enhance operating efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the required capabilities are calculated based only on temperature difference, then the calculation is simple, but the operating efficiency is not improved and energy is not conserved
Solution Approach 1:
The patent changes the parameters used for calculating required capabilities from only temperature difference to include multiple factors: temperature difference, air flow rate, degree of superheat, and degree of subcooling. This comprehensive parameter approach enables more accurate determination of required evaporation and condensation temperatures, improving operating efficiency and energy conservation while maintaining manageable calculation complexity through systematic integration of these parameters.
2Ease of operation
If the required capabilities are calculated based only on temperature difference, then the control method is simple, but the operating efficiency is not always improved
Solution Approach 1:
The patent transforms the control approach by incorporating multiple operational parameters (air flow rate, degree of superheat, degree of subcooling) into the required capability calculation. This enables the system to determine optimal required evaporation and condensation temperatures that account for actual heat exchanger performance conditions, thereby improving operating efficiency while maintaining a systematic and manageable control methodology.
3Device complexity
If the required evaporation temperature or required condensation temperature is calculated without considering heat exchange amount and operating state, then the calculation is straightforward, but the capability of the usage-side heat exchanger is not optimized
Solution Approach 1:
The patent optimizes heat exchanger capability by calculating required evaporation and condensation temperatures based on current heat exchange amounts and operating states including air flow rate, degree of superheat, and degree of subcooling. This multi-parameter approach enables the system to adapt to varying operational conditions and maximize heat exchanger performance while maintaining systematic calculation procedures.
4Ease of operation
If the required evaporation temperature or required condensation temperature is calculated without considering air flow rate, degree of superheat, and degree of subcooling, then the control is simple, but the operating efficiency cannot be sufficiently improved
Solution Approach 1:
The patent achieves sufficient improvement in operating efficiency by calculating required evaporation and condensation temperatures based on comprehensive parameters including air flow rate, degree of superheat, and degree of subcooling. This approach enables the system to identify optimal operating states that fully utilize heat exchanger capabilities while maintaining a systematic and manageable control framework.
Data Source
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AI summary
An air-conditioning apparatus, wherein operating efficiency is improved and energy conservation is achieved. An operation control apparatus (80) of air-conditioning apparatus having an outdoor unit (20) and indoor units (40, 50, 60) that includes a usage-side heat exchangers (42, 52, 62), the air-conditioning apparatus (10) performing indoor temperature control for controlling equipment provided to the indoor units so that the indoor temperature approaches a set temperature, wherein the operation control apparatus comprises required temperature calculation parts (47b, 57b, 67b) for calculating required evaporation temperatures or required condensation temperatures on the basis of either current amounts of heat exchanged in the usage-side heat exchangers and greater amounts of heat exchanged in the usage-side heat exchangers than the current amounts, or an operating state amount that yields the current amounts of heat exchanged in the usage-side heat exchangers and an operating state amount that yields greater amounts of heat exchanged in the usage-side heat exchangers than the current amounts.