System and method for applying air to a heat exchanger and air treatment device comprising same
Solution Overview
Problem
Existing systems for supplying air to heat exchangers lack precise regulation of air volume flows, leading to inadequate control over air distribution across partial areas of the inlet and outlet sides, which affects the efficiency of heat exchange.
Innovation Solution
A system with at least two sensors to measure air volume flows and a controllable air flow regulation unit with pivotable air baffles, allowing individual adjustment of air volume flows across partial areas, and a control system that automatically adjusts the air flow regulation elements based on measured values to maintain predetermined setpoints, ensuring precise distribution and efficient heat exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single airflow control unit with pivotable air dampers is used to regulate air supply to the heat exchanger, then the device complexity is reduced, but the manufacturing precision of air volume flow distribution across partial areas deteriorates
Solution Approach 1:
The air inlet side of the heat exchanger is divided into multiple partial areas (first partial area and second partial area), each equipped with its own airflow control unit and sensors. This segmentation allows independent regulation of air volume flows to different sections, achieving precise air distribution without requiring a single complex control mechanism.
Solution Approach 2:
Each partial area of the heat exchanger is equipped with dedicated airflow control elements and sensors tailored to its specific requirements. The first airflow control unit regulates air supply to the first partial area while the second airflow control unit regulates air supply to the second partial area, allowing each section to have optimized air flow characteristics.
2Device complexity
If airflow control elements are positioned to cover uniform sections of the air inlet side, then the device complexity is reduced, but the measurement precision of air volume flows through partial areas deteriorates
Solution Approach 1:
Sensors are arranged to measure air volume flows separately for the first partial area and second partial area of the heat exchanger. This segmented measurement approach provides precise data for each section, enabling accurate feedback control without requiring a single complex sensor system.
Solution Approach 2:
Each partial area is equipped with its own sensors positioned to specifically measure the air volume flow through that section. The first sensors measure air volume flow through the first partial area while the second sensors measure air volume flow through the second partial area, providing localized measurement precision.
3Ease of operation
If the size of the portion of air inlet side exposed to respective airflow varies with pivot position of air flaps, then the ease of operation is improved, but the manufacturing precision of air volume flow regulation deteriorates
Solution Approach 1:
The system uses multiple independent airflow control units, each with its own pivotable air dampers and sensors, to regulate air supply to different partial areas. This segmentation allows each control unit to be adjusted independently for precise regulation of its designated section, maintaining accuracy even when pivot positions vary.
Solution Approach 2:
Sensors are arranged to measure air volume flows through partial areas and provide feedback to the control system. This feedback mechanism compensates for variations in air flap pivot positions, ensuring precise air volume flow regulation is maintained despite changes in the exposed portion of the air inlet side.
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 solution enables precise adjustment of air volume flows across partial areas, improving the accuracy and efficiency of air distribution, allowing for optimal heat exchange and flexible air supply management.
Implementation Method 1
at least two sensors for measuring air volume flows
Implementation Method 2
a heat exchanger through which air can flow for heat exchange
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a system (1) for supplying air to a heat exchanger (3) comprising a heat exchanger (3) through which air can flow for heat exchange, at least two sensors (17) for measuring air volume flows, and an air flow control unit (5) arranged in the intended air flow direction upstream of the heat exchanger (3), wherein the air flow control unit (5) comprises at least two adjustable air flow control elements (7), the air flow control elements (7) being designed to be adjustable such that the air volume flow supplied to each of at least two sub-areas (13) of the air inlet side (15) of the heat exchanger (3) can be individually adjusted, and wherein the sensors (17) are arranged such thatthat the magnitude of a respective air volume flow through each of the at least two sub-areas (13) of the air inlet side (15) or of a respective air volume flow through each of the at least two sub-areas (13) of the air outlet side (21) of the heat exchanger (3) can be measured. Furthermore, the invention relates to an air treatment system with such a system (1) and a method for controlling such a system (1). The system (1) allows the surface distribution of the air supply to the heat exchanger to be controlled.