Alternator Fan Retrofit for Cooling Unit Energy Recovery
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Solution Overview
Problem
Conventional cooling units waste energy through their exhaust air flow, which is not effectively harnessed for power generation, leading to inefficiencies and increased power loads.
Innovation Solution
Integration of an alternator/generator with a fan blade in fluid communication with the cooling unit's exhaust flow, utilizing the rotative motion to generate electrical power through a turbine fan and converting it back into usable energy via a grid-tie inverter, allowing for energy feedback into the electrical supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional cooling unit operates with a fan for exhaust air flow, then cooling function is maintained, but mechanical energy is wasted and not harnessed for power generation
Solution Approach 1:
The patent converts the wasted mechanical energy from the exhaust air flow into useful electrical power by installing an alternator/generator that harnesses the rotational motion of the fan. The harmful waste energy is transformed into a beneficial power source that feeds back into the electrical supply, thereby resolving the contradiction between energy loss and power generation capability.
2Use of energy by moving object
If an alternator/generator is added to harness waste energy, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The alternator/generator is designed to perform multiple functions: it acts as both a power generation device and a motor during startup, and can operate in different modes (power generation, motor, or idle) based on system needs. This multi-functionality reduces the need for separate components, thereby managing complexity while improving energy efficiency.
Solution Approach 2:
The system uses the exhaust air flow itself as the motive force to drive the alternator/generator, eliminating the need for an external power source or additional mechanical drive system. The waste energy from the cooling unit's own operation is utilized to power the energy recovery mechanism, reducing overall system complexity.
3Adaptability or versatility
If a grid-tie inverter is used to convert DC into AC current, then power integration with grid is enabled, but device complexity and manufacturing cost increase
Solution Approach 1:
The grid-tie inverter serves as an intermediary device that converts the direct current generated by the alternator into alternating current compatible with the grid. This intermediary component enables seamless integration with existing grid infrastructure without requiring modifications to the cooling unit's core functionality, thereby managing manufacturing complexity while enabling grid integration.
4Power
If the alternator/generator is mechanically fitted to the fan, then waste mechanical energy is converted to electrical power, but reliability may be affected by additional mechanical connections
Solution Approach 1:
The alternator/generator is mechanically integrated with the fan assembly, merging two functions (air moving and power generation) into a single unified component. This integration eliminates the need for separate drive mechanisms and reduces the number of mechanical connections, thereby maintaining reliability while enabling effective conversion of waste mechanical energy to electrical power.
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 enhances the efficiency of cooling units by converting waste mechanical energy into electrical energy, reducing power loads and enabling retrofitting of existing systems for improved performance.
Implementation Method 1
an alternator/generator mechanically fitted to a fan whereby the rotative motion of the driveshaft is converted to electrical power
Implementation Method 2
a fan blade in fluid communication with the cooling unit's exhaust flow
Data Source
AI summary
A renewable energy power generation system for a cooling unit which comprises a housing sized to fit the cooling unit. The housing has an upper aperture and a lower aperture positioned over an exhaust port of the cooling unit. A rotor mounted wind turbine is in the housing between the upper aperture and the lower aperture. A venting flow coming through the exhaust port of the cooling unit will travel past the lower aperture of the housing to operate the wind turbine and then pass out of the upper aperture of the housing to cause the wind turbine to generate electricity.