Liquid Degassing Chamber Using Underpressure Without Additive Loss
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Solution Overview
Problem
In liquid systems, particularly in energy wells, geothermal heating, and cooling systems, gases like oxygen, nitrogen, and carbon dioxide diffuse into the fluid, leading to corrosion, energy efficiency deterioration, and the need for degassing to maintain physical and chemical properties, which existing methods fail to address effectively without affecting additives for freezing point reduction.
Innovation Solution
A method and device for degassing a closed liquid system using a movable chamber with a throttle valve to create underpressure, allowing dissolved gases to evaporate and be removed, while maintaining the freezing point additives by controlling the underpressure and using a capillary tube for consistent operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If underpressure is applied to remove dissolved gases, then gas removal efficiency is improved, but freezing point additives are driven out from the liquid mixture
Solution Approach 1:
The patent applies parameter changes by carefully controlling the underpressure level and exposure time to achieve selective degassing. The system maintains underpressure conditions that are sufficient to remove harmful gases (O2, N2, CO2) but controlled enough to prevent significant loss of freezing point additives, resolving the contradiction between gas removal efficiency and additive retention
Solution Approach 2:
The invention extracts only the harmful dissolved gases from the liquid mixture while leaving the beneficial freezing point additives intact. By using a degassing installation that creates controlled underpressure, the system selectively removes unwanted gases (O2, N2, CO2) without significantly affecting the concentration of freezing point additives, thus resolving the technical contradiction
2Quantity of substance
If conventional degassing methods are used, then gas removal is achieved, but system complexity increases due to additional equipment requirements
Solution Approach 1:
The degassing installation is designed to be integrated into existing liquid circulation systems, serving multiple functions: removing dissolved gases, maintaining additive concentration, and working with existing pumps and pipes. This multi-functionality approach reduces the need for completely separate complex degassing systems
Solution Approach 2:
The system utilizes the existing liquid circulation infrastructure (pumps, pipes, heat exchangers) to achieve degassing. The liquid flow through the system itself creates the conditions for gas removal, reducing the need for additional active degassing equipment and simplifying the overall system
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
Effectively removes unwanted gases like oxygen, nitrogen, and carbon dioxide, reducing corrosion and improving energy efficiency without driving out freezing point additives, ensuring the system's physical and chemical properties are maintained.
Implementation Method 1
The underpressure is caused to be sufficiently low so that one or several dissolved compounds in the liquid leave the liquid and are evaporated
Implementation Method 2
an underpressure is caused to be created in the lower chamber part 21
Implementation Method 3
The liquid in the system 10 is caused to be led to the lower chamber part 21 by the tightly sealing wall 22 being caused to move upwards and thereby suck the liquid from the system to the lower part chamber
Data Source
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AI summary
Method for degassing an open or closed liquid system (10) regarding non desired compounds, such as oxygen or oxygen-containing compounds, or nitrogen or carbon dioxide or hydrogen or sulphur compounds. The method is characterised in that liquid from a main circuit of the system (10) or a sub circuit of the system is caused to be led to an elongated chamber (21,23), in that the chamber has a constant cross-section and a tightly sealing wall (22) which is movable along the chamber (21,23), dividing the chamber in a lower (21) and an upper (23) chamber part, in that the liquid is caused to be led to the lower chamber part (21) by the tightly sealing wall (22) being caused to move upwards and thereby sucking in liquid from the system (10) to the lower chamber part (21) via a constriction (SV;SV1), whereby an underpressure in the lower chamber part (21) is caused to be created, in that the underpressure is caused to be sufficiently low so that dissolved compounds leave the liquid and are released into gas phase, and in that the tightly sealing wall (22) thereafter is caused to move downwards and as a result cause the liquid and gases to be restored to the system (10) while gas is caused to depart to the environment via a deairing valve (AL), and in that the described cycle is repeated.