Cooling Chamber Defrosting With Dual-Region Heating Loop
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Solution Overview
Problem
Ice formation on the surface of the cooling evaporator in uranium hexafluoride cooling chambers inhibits the operation by reducing heat transfer efficiency, which existing technologies have not adequately addressed.
Innovation Solution
A dual-region heating system is employed, where a first region inside the cooling chamber heats the cooling unit using a heating fluid conduit, and a second region outside the chamber uses ambient temperature fluid to reheat the fluid, creating a closed loop to efficiently defrost the evaporator by transferring heat both internally and externally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling evaporator is used to cool uranium hexafluoride in a cooling chamber, then the cooling efficiency is improved, but ice forms on the surface of the evaporator which inhibits its operation
Solution Approach 1:
The patent converts the harmful ice formation on the evaporator surface into a beneficial defrosting process by introducing a heating fluid circuit. The heating fluid, circulated through conduits inside the cooling chamber, transfers thermal energy to melt the ice deposits, thereby restoring the evaporator's cooling efficiency and preventing operational inhibition.
Solution Approach 2:
The patent introduces a heating fluid as an intermediary substance to transfer thermal energy from the heating chamber to the cooling chamber. This fluid circulates through a closed-loop system, absorbing heat in the heating region and delivering it to the evaporator surface in the cooling region, enabling controlled defrosting without direct heating elements contacting the uranium hexafluoride.
2Loss of energy
If ice is removed from the cooling unit surface, then heat transfer efficiency is restored, but additional heating equipment and complexity are introduced
Solution Approach 1:
The heating fluid circuit serves multiple functions: it heats the cooling evaporator to remove ice deposits, maintains operational temperature of the cooling chamber components, and integrates with the existing cooling system infrastructure. This multi-functionality reduces the need for separate dedicated defrosting equipment, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent merges the heating and cooling systems into a single integrated thermal management system. The heating fluid circuit is combined with the cooling evaporator structure, with heating conduits positioned adjacent to or within the evaporator assembly. This integration allows simultaneous or sequential heating and cooling operations using shared infrastructure, reducing overall system complexity.
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 method effectively defrosts the cooling unit, maintaining the cooling chamber's efficiency by preventing ice buildup and ensuring safe operation without overheating the uranium hexafluoride container.
Implementation Method 1
a first heat exchanger configured to heat the cooling unit by exposing the cooling unit to a first region of heating fluid conduit inside the cooling chamber
Implementation Method 2
a second heat exchanger configured to heat the heating fluid by exposing a second region of heating fluid conduit to an ambient temperature outside the cooling chamber
Data Source
Figure 1~2
Figure 3a
Figure 3b~4
AI summary
An apparatus comprising a cooling chamber comprising a cooling unit for cooling uranium hexafluoride in the chamber; and a heater comprising a first region inside the cooling chamber arranged to defrost the cooling unit; and a second region outside the cooling chamber arranged to receive heating fluid cooled in the first region and to heat the received fluid. A method of defrosting a cooling unit is also described.