What Is a Data Center Thermal Energy Storage Tank: Definition for Uptime
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What Is a Data Center Thermal Energy Storage Tank: Definition for Uptime
A data center thermal energy storage tank is a large insulated water tank that stores chilled water to shift cooling load, cut chiller peak demand and provide short-term resilience. It is the cooling-side equivalent of a battery for the data center's thermal load.
A data center thermal energy storage tank is a water tank that banks chilled water so the facility can shave chiller peaks, ride through short outages and support grid flexibility without compromising uptime.
Technical Explanation
Why data centers use it
· Cooling is a large, steady load; a charged tank lets chillers run off-peak and carries cooling through a chiller trip, protecting PUE and uptime.
· Cooling, not IT, is the flexible load.
What it stores
· Chilled water at the supply-return spread; the tank is a stratified bolted steel vessel with diffusers tuned to the chilled-water loop.
· Water is the medium; stratification is the method.
Where it sits
· On the chilled-water loop between plant and halls, piped for continuous through-flow and insulated for the climate.
· Integration protects the loop.
Technical Specifications
Table 1 - Data center specification factors
Aspect | Data center | Note |
Load | Cooling | Steady |
Store | Chilled water | Stratified |
Benefit | PUE/uptime | Resilience |
Place | Loop | Through |
Build | Bolted | Coated |
Project Case Study
Project Case Summary - delivered water storage tanks
The deliveries below are representative bolted water and fire-protection storage tanks in glass-fused-to-steel, fusion bonded epoxy and stainless steel construction, with capacity, location and completion date recorded for each order. They illustrate the company's delivered capability for the type of tank discussed in this article.
Project | Application | Capacity | Construction | Roof | Completion |
Singapore | Firefighting water | 1,666 m3 | Glass-fused-to-steel bolted | Enamel roof | 2026-01 |
Saudi Arabia | Firefighting water | 492 m3 | Fusion bonded epoxy | Aluminium flat roof | 2024-11 |
Guinea | Firefighting water | 1,983 m3 | Hot-dip galvanized tank | Aluminium flat roof | 2025-12 |
Company Expertise
Center Enamel (Shijiazhuang Zhengzhong Technology Co., Ltd) manufactures bolted data center thermal energy storage tanks in glass-fused-to-steel, fusion bonded epoxy and stainless steel, engineered to AWWA D103-09 with the enamel coating process controlled to ISO 28765.
Center Enamel supplies bolted thermal energy storage tanks for data center cooling loops, delivered with coating and material records for the compliance file.
Frequently Asked Questions (FAQ)
Q: What is a data center TES tank?
A: A water tank that stores chilled water to shift cooling load and add resilience for a data center.
Q: Is it like a battery?
A: For cooling, yes - it banks thermal energy instead of electricity.
Q: How does it help uptime?
A: A charged tank carries cooling through a short chiller outage.
Q: Does it improve PUE?
A: It can, by letting chillers run at steadier, more efficient conditions.
Q: Where is it installed?
A: On the chilled-water loop, often outdoors or in the central plant.
Q: What build is typical?
A: Bolted stratified steel tank with diffusers and insulation.
A data center thermal energy storage tank is the cooling-side battery: store chilled water, shift the chiller load, and protect uptime. Build it as a bolted stratified steel tank on the loop.
Request Technical Specifications
Send your duty, capacity requirement and site conditions, and we will return the tank configuration, coating specification and documentation schedule for your project file.
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