Room portable blast chiller
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Solution Overview
Problem
Server farms and other temperature-sensitive facilities face critical overheating issues during peak use hours or power outages, leading to potential equipment damage and service disruptions due to inadequate cooling systems.
Innovation Solution
A portable blast chiller system utilizing liquid nitrogen as a cooling medium, featuring a specially designed heat exchanger with vertical and horizontal copper pipes, multiple fans, and a fail-safe oxygen sensor, which can rapidly cool rooms without external power by maximizing liquid nitrogen flow and maintaining it in a liquid state for efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a facility air conditioning system is used to maintain acceptable temperature levels, then the temperature can be kept stable under normal conditions, but the system fails to provide adequate cooling during extreme circumstances such as peak use times or brownouts
Solution Approach 1:
The system changes the temperature parameter dramatically by introducing cryogenic liquid nitrogen (−196°C) to create a blast cooling effect, enabling rapid temperature reduction from extreme levels to acceptable ranges within minutes, far exceeding normal HVAC cooling capacity
Solution Approach 2:
The system utilizes the phase transition of liquid nitrogen evaporating to gas phase, which absorbs large amounts of heat (latent heat of vaporization) to rapidly cool the server room air, providing emergency cooling capability that ordinary HVAC systems cannot achieve
2Productivity
If liquid nitrogen is used as a cooling medium with a specially designed heat exchanger, then rapid cooling can be achieved without external power, but the system complexity increases
Solution Approach 1:
The heat exchanger is segmented into multiple horizontal copper pipes arranged in parallel, each pipe contributing to the cooling surface area, which maximizes heat transfer efficiency and enables rapid cooling without requiring complex mechanical systems
Solution Approach 2:
The system uses liquid nitrogen flow through the heat exchanger pipes, utilizing fluid dynamics and pressure differentials to distribute the cryogenic liquid efficiently throughout the cooling system without requiring external power for pumping
3Object-generated harmful factors
If the outlet pipe diameter is made at least twice the inlet tube diameter, then exhaust gas can be expelled more efficiently outside the facility, but the device size increases
Solution Approach 1:
The exhaust line is routed through a window, door, or other exit to the outside of the facility, utilizing the vertical and horizontal space dimensions to channel exhaust gas away from the server room without requiring the entire device to be larger
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 reduces extreme temperatures in server farms and similar facilities within minutes, ensuring equipment safety and uninterrupted service by achieving rapid cooling without the need for external electricity, making it an efficient solution for extreme temperature control.
Implementation Method 1
a heat exchanger mounted to the brackets and receiving cryogen, the heat exchanger having a vertical inlet coupled in parallel to a plurality of equal size horizontal tubes
Implementation Method 2
horizontal copper pipes, maximizing liquid nitrogen flow and maintaining it in a liquid state for efficient heat transfer
Implementation Method 3
uses cryogenic liquid nitrogen as the cooling medium and cools a room at an extremely fast rate
Implementation Method 4
maintaining it in a liquid state for efficient heat transfer
Implementation Method 5
multiple fans attached to the heat exchanger
Implementation Method 6
a fail-safe oxygen sensor to protect a biological object in the enclosed facility
Data Source
AI summary
A system includes a heat exchanger mounted to the brackets and receiving cryogen, the heat exchanger having a vertical inlet coupled in parallel to a plurality of equal size horizontal tubes each traversing a width of the heat exchanger and further coupled in parallel to a vertical outlet pipe with an outlet diameter at least twice an inlet tube diameter; a temperature sensor; a thermostat that monitors the temperature sensor and maintains a predetermined temperature set point by communicating with a solenoid valve coupled to the heat exchanger; an exhaust line coupled to the outlet pipe that expels exhaust gas outside the enclosed facility; multiple fans attached to the heat exchanger; and a fail-safe oxygen sensor to protect a biological object in the enclosed facility.