Data Center Cooling Bypass Valve for Reverse Heating Control
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Solution Overview
Problem
The existing cooling systems in data centers face a challenge with reverse heating issues when outdoor temperatures are higher than indoor temperatures, leading to cooling capacity attenuation and ineffective heat dissipation.
Innovation Solution
A cooling system incorporating a heat exchanger, a cooling supplement component, a bypass vent valve, and a controller, which monitors temperatures to adjust the bypass vent valve and first air valve to prevent reverse heating and maintain optimal cooling capacity, utilizing a combination of indirect evaporative cooling and refrigerant cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If indirect evaporative cooling is used to cool indoor air, then cooling capacity is improved, but when outdoor temperature is higher than indoor temperature, reverse heating occurs and cooling capacity attenuates
Solution Approach 1:
A bypass vent valve is introduced as an intermediary component to control the mixing of outdoor and indoor air streams. When reverse heating is detected (outdoor temperature higher than indoor temperature), the bypass vent valve adjusts to prevent the heated outdoor air from mixing with the cooled indoor air, thereby maintaining cooling capacity and preventing temperature rise in the equipment room.
2Reliability
If bypass vent valve is opened to prevent reverse heating, then cooling capacity is maintained, but energy consumption increases due to loss of cooling effect
Solution Approach 1:
Temperature sensors continuously monitor the temperatures of outdoor air, indoor air, and mixed air. The controller processes these temperature signals and dynamically adjusts the bypass vent valve opening degree in real-time. When reverse heating conditions are detected, the system activates the bypass to maintain cooling capacity; when conditions normalize, the bypass closes to recover cooling efficiency, thereby optimizing energy consumption through closed-loop feedback control.
3Stability of the object's composition
If cooling system operates continuously to maintain temperature, then temperature stability is improved, but equipment wear increases and maintenance frequency increases
Solution Approach 1:
The system transitions from static continuous operation to dynamic conditional operation. The bypass vent valve and cooling supplement component are activated only when temperature conditions require intervention (detected by temperature sensors). This dynamic control strategy maintains temperature stability within the equipment room while minimizing the running time of cooling components, thereby extending equipment service life and reducing maintenance frequency.
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 suppresses reverse heating and maintains cooling capacity, ensuring efficient heat dissipation in data centers even under high outdoor temperatures, reducing energy consumption and prolonging equipment life.
Implementation Method 1
indoor air may be cooled through combined refrigeration of indirect evaporative cooling of the heat exchanger
Implementation Method 2
The heat exchanger includes an air intake vent A and an air exhaust vent B that are used for outdoor fresh air entry and discharge
Implementation Method 3
the cooling supplement component includes a condenser and an evaporator, the condenser is connected to the air exhaust vent B by using an exhaust air pipe, and the evaporator is connected to the air exhaust vent D
Implementation Method 4
combined refrigeration of indirect evaporative cooling of the heat exchanger and the cooling supplement component
Data Source
AI summary
This application provides a cooling system, including a heat exchanger, a cooling supplement component, a bypass vent valve, and a controller. The heat exchanger includes an air intake vent A and an air exhaust vent B that are used for outdoor fresh air entry and discharge, and an air intake vent C and an air exhaust vent D that are used for indoor return air entry and discharge. The cooling supplement component includes a condenser and an evaporator, the condenser is connected to the air exhaust vent B by using an exhaust air pipe, and the evaporator is connected to the air exhaust vent D. The bypass vent valve is disposed on the exhaust air pipe, and the bypass vent valve communicates with outdoor air. The bypass vent valve is connected to the controller, and the controller is configured to control the bypass vent valve.