Gas Cabinet Ventilation Flow Modulation for Leak Hazard Control
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Solution Overview
Problem
Current ventilation systems in semiconductor manufacturing facilities, which use sorbent-based fluid storage and dispensing vessels, face inefficiencies and safety concerns due to fixed high ventilation gas flow rates designed for worst-case scenarios, leading to increased energy consumption and equipment costs.
Innovation Solution
A ventilation gas management system that includes a flow modulator, monitoring assembly, and controller to dynamically adjust ventilation gas flow based on real-time conditions such as fluid inventory, pressure, and hazard levels, optimizing flow rates to match specific operational needs and reducing risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed high ventilation gas flow rates are used to handle worst-case scenarios, then safety is improved, but energy consumption and equipment costs increase
Solution Approach 1:
The ventilation system transitions from fixed flow rates to dynamic, variable flow rates that automatically adjust based on real-time monitoring of fluid pressure, inventory levels, and hazard conditions. This allows the system to maintain high safety standards while consuming less energy during normal operation.
Solution Approach 2:
The system changes the operational parameters of ventilation gas flow from constant to variable, adjusting flow rates based on monitored conditions such as fluid pressure, inventory levels, and hazard assessments. This enables optimized energy consumption while maintaining safety.
2Reliability
If fixed high ventilation gas flow rates are used to handle worst-case scenarios, then safety is improved, but equipment costs increase
Solution Approach 1:
The system incorporates monitoring assemblies that continuously detect fluid pressure, inventory levels, and hazard conditions, providing feedback to controllers that automatically adjust ventilation flow rates. This feedback mechanism enables cost-effective operation by avoiding unnecessary high flow rates during low-risk conditions.
Solution Approach 2:
The ventilation system becomes self-regulating through automated monitoring and control, adjusting its own operation based on real-time conditions without requiring manual intervention or oversized equipment for all scenarios.
3Object-affected harmful factors
If fixed high ventilation gas flow rates are used, then hazard mitigation is improved, but operational efficiency decreases
Solution Approach 1:
The ventilation system dynamically adjusts flow rates to match actual operational needs and hazard levels, improving operational efficiency by reducing unnecessary gas flow during safe conditions while maintaining adequate hazard mitigation when needed.
Solution Approach 2:
The system changes ventilation parameters from fixed to variable, optimizing the balance between hazard mitigation and operational efficiency by adjusting flow rates based on real-time monitoring of fluid conditions and inventory levels.
Data Source
AI summary
A ventilation gas management system and process for an enclosure adapted to contain fluid supply vessel(s) and through which ventilation gas is flowed to provide safe operation in the event of leakage of fluid from a vessel. Ventilation gas flow is modulated to accommodate various hazard levels associated with the deployment and operation of such enclosure containing fluid supply vessel(s), e.g., a gas box or gas cabinet in a semiconductor manufacturing facility, thereby achieving reduction in ventilation gas requirements otherwise required for such deployment and operation.