Fluid supply apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid supply apparatuses for supercritical fluids, such as carbon dioxide, face challenges in maintaining precise temperature control due to temperature fluctuations, which affect solubility and stability.
Innovation Solution
A dual fluid circulation system with a heat exchanger, tank, pump, and heater, where a second fluid circulation device cools and exchanges heat with the first fluid in the heat exchanger and tank to maintain stable temperature, and includes a pump connection and bypass for adjustable cooling, ensuring high refrigerating capacity and precise temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional circulation-type generator is used to generate supercritical carbon dioxide fluid, then the fluid can be repeatedly generated through pumping and heating, but the temperature of the carbon dioxide cannot be maintained at a desired temperature due to temperature fluctuations
Solution Approach 1:
The patent applies preliminary anti-action by introducing a cooling system that proactively counteracts temperature rises before they affect the heater inlet temperature. The cooling circuit circulates coolant through heat exchangers positioned to cool the carbon dioxide at multiple points in the circulation loop, preventing temperature fluctuations rather than merely responding to them.
Solution Approach 2:
The patent implements feedback control by using temperature sensors to monitor the carbon dioxide temperature at various points in the circulation loop. The sensor signals are fed back to control the cooling system and heater operations, enabling dynamic adjustment to maintain stable temperature despite fluctuations during the circulation process.
2Measurement precision
If the temperature of carbon dioxide is controlled highly accurately to obtain desired solubility, then the solubility control is improved, but the temperature maintenance becomes difficult due to heat generation during pumping and heating processes
Solution Approach 1:
The patent applies segmentation by dividing the temperature control function into multiple independent cooling zones along the circulation loop. Separate cooling circuits with heat exchangers are positioned at different locations (e.g., after the heater, before the pump, and in the storage tank) to provide localized temperature control, enabling precise maintenance of carbon dioxide temperature throughout the system.
Solution Approach 2:
The patent utilizes parameter changes by adjusting the flow rate and temperature of the coolant circulating through the heat exchangers. By dynamically changing these coolant parameters based on the carbon dioxide temperature measurements, the system can precisely control the carbon dioxide temperature to maintain desired solubility conditions despite variations in pump and heater operations.
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 effectively stabilizes the temperature of the fluid, particularly between the pump and heater, enhancing solubility control and maintaining desired temperature conditions for supercritical fluid generation.
Implementation Method 1
a heat exchanger that cools and liquefies a first fluid
Implementation Method 2
cools and liquefies a first fluid
Implementation Method 3
a cooler that cools a second fluid
Implementation Method 4
a heater that heats the first fluid pumped from the pump
Data Source
AI summary
In a first fluid circulation device, a heat exchanger, a tank that stores a first fluid liquefied by the heat exchanger, a first fluid pump that pumps the first fluid stored in the tank, a heater that heats the first fluid pumped from the first fluid pump, and a first fluid supply unit to which the first fluid is supplied from the heater are connected by a first pipe. A second fluid circulation device includes a cooler that cools a second fluid, causes the second fluid having been cooled by the cooler to circulate through a second pipe, and returns the second fluid to the cooler. The second pipe is connected to the heat exchanger and is connected to the tank and the first fluid pump, and the second fluid cools the first fluid in the heat exchanger, the tank, and the first fluid pump.