Transformer OAEHE Cooling with Cross-Flow Jet Air Distribution
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Solution Overview
Problem
Conventional fans used for transformer cooling produce high noise, are complex and heavy, and do not provide uniform cooling, leading to inefficiencies in heat transfer and increased power consumption.
Innovation Solution
A cooling arrangement using a bladeless fan system with an impeller-motor device, fluid pipes, and a first and second fluid discharge device to enhance cooling by applying cross flow jets, optimizing fluid flow distribution and reducing velocity differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional fans are used for transformer cooling, then cooling function is provided, but noise level is high and structure is complex
Solution Approach 1:
The invention extracts the impeller from the traditional fan housing and relocates it to a remote position, separating the noise-generating component from the cooling application area. The impeller is now housed in a remote enclosure while the fluid discharge device is positioned near the heat exchanger, effectively isolating the noise source from the transformer cooling zone.
Solution Approach 2:
The invention introduces a fluid discharge device as an intermediary between the remote impeller and the heat exchanger. This device includes a nozzle or jet structure that directs the fluid flow onto the heat exchanger surfaces, mediating the transfer of cooling function while allowing the impeller to remain remotely located in a noise-isolated position.
2Use of energy by moving object
If bladeless fan with linear slot is used, then power consumption is reduced, but flow uniformity is poor
Solution Approach 1:
The invention applies different geometric characteristics to different parts of the fluid discharge device. The cross-sectional shape of the discharge device is specifically designed to compensate for the non-uniform velocity profile inherent in bladeless fan operation, creating locally optimized flow distribution across the heat exchanger surface.
Solution Approach 2:
The invention modifies the geometric parameters of the fluid discharge device, particularly the cross-sectional shape and orientation, to transform the velocity distribution of the fluid flow. By adjusting these parameters, the system converts the concentrated edge-flow characteristic into a more uniform distribution pattern.
3Object-affected harmful factors
If remote impeller is used, then noise is controlled, but fluid flow distribution becomes non-uniform
Solution Approach 1:
The fluid discharge device serves as an intermediary that corrects the non-uniform flow pattern generated by the remote impeller. The device's specially designed geometry acts as a flow conditioning element, redistributing the fluid to achieve uniform cooling across all heat exchanger panels while maintaining the noise benefits of remote impeller placement.
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
The system provides efficient, silent, and uniform cooling with reduced power consumption by enhancing fluid flow and heat transfer, using Bernoulli multiplier technology to multiply fluid flow by 10 to 50 times, effectively cooling transformers.
Implementation Method 1
The at least one impeller-motor device is adapted to supply the fluid to the inlet of the first fluid discharge device via the at least one fluid pipe and cause the fluid to flow through the at least one fluid outlet of the first fluid discharge device in a direction of the at least one OAEHE
Implementation Method 2
the second fluid discharge device may disturb the fluid that flows through the at least one fluid outlet of the first fluid discharge device by destabilizing and/or widen the fluid by applying a cross flow jet
Implementation Method 3
The state-of-the-art cooling of using standard fans produces high noise... The efficiency of the cooling is dependent on the air flow rate... The cooling process is performed by ambient air as natural or forced convection
Data Source
AI summary
A cooling arrangement for cooling at least one OAEHE in a transformer. The cooling arrangement comprises at least one impeller-motor device, at least one fluid pipe and a first fluid discharge device. The first fluid discharge device comprises a fluid inlet arranged to receive a fluid from the at least one fluid pipe, and at least one fluid outlet arranged to direct the fluid towards the OAEHE, wherein the at least one impeller-motor device is adapted to supply the fluid to the inlet of the first fluid discharge device via the at least one fluid pipe and cause the fluid to flow through the at least one fluid outlet of the first fluid discharge device in a direction of the at least one OAEHE. The cooling arrangement further comprises a second fluid discharge device adapted to disturb the fluid that flows through the at least one fluid outlet of the first fluid discharge device.