How to Calculate Data Center Thermal Energy Storage Tank Capacity: kWh and Hours
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How to Calculate Data Center Thermal Energy Storage Tank Capacity: kWh and Hours
Calculate data center thermal energy storage tank capacity as cooling energy = volume x rho x cp x dT, then express hours of cover by dividing by the average cooling load. State the temperature difference and subtract standby loss to report deliverable capacity.
Calculating data center thermal energy storage tank capacity expresses the tank as cooling energy in kWh and as hours of cooling cover.
Technical Explanation
Cooling energy
· Energy (kWh) = Volume x 1000 x 4.18 x dT / 3.6. This is the cooling the tank can deliver at the chilled-water spread.
· Headline number for the case.
Hours of cover
· Divide stored cooling by the average peak cooling load to get hours the tank can carry the halls alone.
· Hours is what operators feel.
Deliverable capacity
· Subtract standby loss over the hold time so the quoted number reflects what the plant actually receives.
· Quote deliverable, not nominal.
Technical Specifications
Table 1 - Data center specification factors
Quantity | Formula | Unit |
Energy | V.rho.cp.dT/3.6 | kWh |
Hours | E/load | h |
Loss | f(time) | kWh |
Deliver | E-loss | kWh |
Verify | Design | Confirm |
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 |
Costa Rica | Potable water | 11,756 m3 | Glass-fused-to-steel bolted | Aluminium dome roof | 2025 |
Cirebon | Potable water | 10,237 m3 | Glass-fused-to-steel bolted | Aluminium alloy roof | 2020 |
Malaysia | Potable water | 7,488 m3 | Glass-fused-to-steel bolted | Aluminium dome | 2024 |
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 verifies data center thermal energy storage tank capacity against the cooling target and temperature difference.
Frequently Asked Questions (FAQ)
Q: How calculate DC TES capacity in kWh?
A: Volume x water density x specific heat x dT, converted to kWh.
Q: What are hours of cover?
A: Stored cooling divided by average peak cooling load.
Q: Nominal vs deliverable?
A: Deliverable subtracts standby loss over the hold.
Q: Does dT scale capacity?
A: Linearly - wider dT, more energy per volume.
Q: How accurate?
A: Within the loss margin; state dT and hours.
Q: Who validates?
A: Engineer of record using supplier volume and plant duty.
Calculating data center thermal energy storage tank capacity is energy and hours of cover, with loss stated. Report deliverable capacity so the number is honest.
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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