Data center refrigeration system
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Solution Overview
Problem
Data center refrigeration systems face challenges in efficiently removing heat from high-performance computing processors while minimizing energy consumption, as they require substantial power to circulate refrigerant through small and remote heat exchangers, and power requirements fluctuate with varying server loads.
Innovation Solution
A refrigeration system that uses waste heat from processors to generate mechanical energy, which powers the circulation of refrigerant, reducing the need for electrical power by employing a driver and pump mechanism that converts gaseous refrigerant pressure differentials into mechanical force to pump liquid refrigerant through heat exchangers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electrical power is used to pump refrigerant through heat exchangers, then refrigerant circulation is achieved, but energy consumption increases
Solution Approach 1:
The system uses the waste heat from processors to self-power the refrigerant circulation. The thermal energy that would otherwise be discarded is converted into mechanical work through a heat engine, which drives the pump to circulate refrigerant without requiring external electrical power input.
Solution Approach 2:
The patent converts the harmful waste heat generated by processors into a beneficial resource. This thermal energy, which normally would need to be dissipated, is instead utilized to power the refrigerant circulation system, turning an energy waste problem into an energy source.
2Adaptability or versatility
If refrigeration system power is increased to handle varying server loads, then heat removal capacity improves, but energy consumption increases
Solution Approach 1:
The system dynamically adapts to varying heat loads from processors. As the processors generate more heat, the heat engine receives more thermal energy and produces more mechanical work, automatically increasing the refrigerant circulation rate to match the elevated heat removal requirements without manual intervention or additional electrical power input.
Solution Approach 2:
The system creates a natural feedback loop where the heat generated by processors directly influences the refrigeration capacity. The waste heat serves as both the indicator of cooling demand and the fuel for the cooling system, ensuring the refrigeration capacity automatically tracks with the thermal load.
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 approach allows for efficient heat removal from processors with reduced energy inputs, maintaining processor temperatures below threshold levels while minimizing electrical power consumption and adapting to varying heat loads.
Implementation Method 1
produce a mechanical force from a pressure differential between the first pressure and the second pressure
Implementation Method 2
The condenser is configured to condense gaseous refrigerant to liquid refrigerant
Implementation Method 3
The refrigerant removes heat from the processors and exits the heat exchangers as gaseous refrigerant
Data Source
AI summary
An apparatus includes a pump and a driver mechanically coupled to the pump. The driver is configured to receive gaseous refrigerant at a first pressure, discharge gaseous refrigerant at a second pressure, and produce a mechanical force from a pressure differential between the first pressure and the second pressure. The pump is configured to receive liquid refrigerant at a third pressure, discharge liquid refrigerant at a fourth pressure, and pump liquid refrigerant from the third pressure to the fourth pressure in response to the mechanical force from the driver.