HVACR Airflow Control to Balance Fan Power and Compressor Efficiency
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Solution Overview
Problem
HVACR systems face inefficiencies when reducing airflow to minimize fan power consumption, as compressor efficiency and reliability are adversely affected at low flow rates, leading to energy waste due to diminishing returns in power savings and increased compressor losses.
Innovation Solution
A method to determine an operational flow rate for HVACR systems based on compressor and blower power consumption data, using a mathematical model that considers compressor efficiency and airflow power consumption, ensuring the flow rate balances compressor and blower power consumption for optimal efficiency, even at partial loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If airflow is reduced to minimize fan power consumption, then fan power consumption is reduced, but compressor efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts the airflow parameter based on load conditions, using a mathematical model to determine optimal flow rates that balance fan power consumption against compressor efficiency requirements. The model incorporates compressor efficiency data and airflow power consumption data to calculate the optimal operational flow rate for partial load conditions.
Data Source
AI summary
This disclosure is directed to systems and methods for determining airflow in a heating, ventilation, air conditioning and refrigeration (HVACR) system to reduce overall power consumption. Methods include receiving efficiency data for one or more compressors of the HVACR system, receiving airflow power consumption data, determining, using a processor, a flow rate based on the efficiency data for the one or more compressors and the airflow power consumption data, and when the HVACR system is in a partial load condition and at least one of the one or more compressors are in operation, operating the HVACR system at the determined flow rate. Systems include one or more compressors, one or more blower fans, and a processor configured to determine an airflow rate for the one or more blower fans based on efficiency data for the one or more compressors and airflow power consumption data.