Nord stone

Thermal Energy Storage (TES) Pressure Tank

TES Pressure Tank

Introduction

Thermal Energy Storage (TES) Pressure Tanks are ASME-certified utility vessels designed to store thermal energy for HVAC, industrial, and utility applications. They enable load shifting, peak shaving, and energy optimization, improving overall energy efficiency and reducing operational costs.

At NORDSTONE., TES tanks are engineered with advanced thermal performance, robust mechanical design, and certification under ASME Section VIII Div.1, PED, NB, ensuring long-term reliability and superior performance.

What is a TES Pressure Tank?

A TES tank stores hot or chilled water, or phase-change media, under pressurized conditions. The stored thermal energy is released during high-demand periods to reduce energy consumption and improve system efficiency.

  • Cylindrical or spherical pressure vessel
  • Inlet/outlet nozzles for thermal media circulation
  • Internal baffles or coil heat exchangers
  • Pressure relief & air vent connections
  • Drain port for maintenance
  • Optional insulated exterior for minimal heat loss

Technical Features

1) Design & Construction:
  • Design Standards: ASME Sec VIII Div.1 / PED / NB / API
  • TES Tank Types:
    • Hot Water TES Tanks
    • Chilled Water TES Tanks
    • Phase-Change Material (PCM) TES Tanks
    • Pressurized TES Tanks
    • Custom Industrial TES Tanks
  • Design Pressure: 4 to 20 bar (customizable)
  • Design Temperature: 0°C to 120°C (or project-specific)
  • Material Selection:
    • Carbon Steel – SA516 Gr.60/70, SA106 Gr.B
    • Stainless Steel – SS304/304L, SS316/316L
    • Duplex / Super Duplex Stainless Steel
    • Nickel Alloys – Inconel, Hastelloy, Alloy 20
    • Internal lining or special coatings for corrosion resistance
  • Thermal Enhancements:
    • Internal baffles for improved thermal stratification
    • Optional coil heat exchangers
    • Optimized nozzle placement for efficient flow
2) Capacity Range:

TES pressure tanks are manufactured from 500 Litres to 50,000 Litres, with custom-built capacities available for industrial and utility-grade systems.

Typical Design Envelope

Parameter Range Remarks
Diameter 0.5 m – 4 m Project-specific
Height 1 m – 6 m Larger units available
Volume 500 L – 50,000 L Fully customizable
3) Nozzle & Accessories:

Each TES tank includes:

  • • Inlet & outlet nozzles
  • • Pressure relief valve connection
  • • Air vent port
  • • Drain connection for maintenance
  • • Optional manway for internal inspection
4) Surface Finish:
  • • External sand/grit blasting to SA 2.5
  • • Anti-corrosive primer coating
  • • PU / Epoxy top coat (custom colors available)
  • • Optional thermal insulation for heat retention
Functional Advantages:
  • •

    Energy Optimization

    Stores and releases thermal energy to reduce peak energy usage and operational cost.

  • •

    System Efficiency

    Improves chiller/boiler performance and reduces cycling frequency.

  • •

    Long-Term Reliability

    Engineered for durability with corrosion-resistant materials and robust design.

Optional Features & Packages:
  • •

    Configuration Options

    • ✔ Vertical or horizontal mounting
    • ✔ PCM modules or internal baffles
    • ✔ Coil heat exchangers
  • • Thermal insulation for energy retention
  • • Temperature, pressure & level instrumentation
  • • Skid-mounted or free-standing assemblies
  • • Custom nozzle arrangement & manway design
Quality Assurance:

All TES pressure tanks undergo strict QA/QC testing:

  • • Hydrostatic & pneumatic testing
  • • Ultrasonic testing (UT) for weld integrity
  • • Radiographic testing (RT)
  • • Dye penetrant & magnetic particle testing
  • • EN 10204 3.1 Material Traceability (MTC)
  • • ASME U-Stamp & NB certification (optional)

Industries Served

  • • HVAC & Chilled Water Systems
  • • Hot Water & Heating Systems
  • • Industrial & Utility Energy Systems

Why Choose NORDSTONE.?

  • • 20+ years of expertise in TES and pressurized utility vessels
  • • Advanced thermal energy modeling & mechanical design
  • • ASME-certified manufacturing for global supply
  • • Custom-engineered TES systems for HVAC, industrial & utility sectors
  • • Complete QA/QC documentation & third-party inspection
  • • Proven reliability in large-scale energy management projects
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Ready to Discuss Your Thermal Energy Storage (TES) Pressure Tank Requirements?

Contact our engineering team for custom solutions and quotations.

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