Geothermal Heat Exchanger Bracket

Geothermal Heat Exchanger Bracket is engineered to maintain structural stability under temperature gradients ranging from 4°C to 65°C commonly seen in closed-loop ground heat systems. Bracket geometry and material selection are optimized to absorb longitudinal and lateral displacement of HDPE pipe assemblies caused by thermal expansion and contraction without inducing mechanical stress on the pipe network or anchoring substrate. 

Material Grade & Specification

Stainless Steel 304 or 316, Carbon Steel (ASTM A36), or Aluminum (6061-T6), depending on environmental conditions

Dimensional Tolerances

±0.005 inches (±0.13 mm) for critical dimensions, ±0.002 inches (±0.05 mm) for mounting holes and slot dimensions

Surface Finish Requirement

Ra ≤ 1.6 µm (63 µin) for contact surfaces, Ra ≤ 3.2 µm (125 µin) for non-contact areas

Load Bearing Capacity Requirement

≥ 5000 N (or custom-specific load requirement) based on application and load calculations

Heat Resistance & Thermal Conductivity Requirement

withstand temperatures up to 300°C with thermal conductivity ≥ 150 W/m·K (for metals used in heat exchangers)

Product Description

Geothermal Heat Exchanger Bracket resists differential soil pressure caused by freeze-thaw cycles, hydrostatic changes, and compaction forces in borefield environments. The design integrates load-distribution fins and anti-migration features, which prevent bracket torsion and shear displacement. Structural integrity is verified using nonlinear soil-structure interaction modeling under simulated burial depths exceeding 15 meters. 

Corrosion Resistance Requirement

comply with high corrosion resistance standards such as ASTM B117 salt spray test or equivalent for harsh geothermal environments

Hardness Requirement

70-90 HRB for Stainless Steel, or as per custom specification for wear-resistance properties

Non-Destructive Testing (NDT) Requirement

Dye Penetrant Testing (DPT), Ultrasonic Testing (UT), and Visual Inspection (VT) for structural integrity

Welding Specification

AWS D1.1 (Structural Welding Code), TIG/MIG welding for stainless steel or Carbon Steel, full penetration welds for critical joints

Certification Standard

ISO 9001:2015 (Quality Management), ISO 14001 (Environmental Management), and RoHS compliance (if applicable)

Technical Advantages

Geothermal Heat Exchanger Bracket is manufactured using chemically inert, low-friction polymers or coated steels that exhibit zero galvanic interaction with polyethylene piping. The bracket’s contact surfaces are pressure-distribution profiled to avoid ovalization or creep in SDR-rated pipes, ensuring long-term flow efficiency and avoiding micro-fracture initiation at clamping zones. 

Geothermal Heat Exchanger Bracket is exposed to pH ranges from 4.5 to 8.5 and varying mineral concentrations depending on borehole location. Corrosion resistance is achieved through thermoset powder coatings, duplex stainless steels, or glass-reinforced polymers, validated through ASTM G31 and ISO 9227 immersion and salt spray tests for over 1,000 hours. 

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Industry Applications

Vertical Borehole Ground Source Systems

Supports HDPE U-bend piping at depth, ensuring thermal alignment and mechanical stability under vertical soil load and hydrostatic pressure. 

Horizontal Loop Field Installations

Maintains pipe separation and thermal spacing in trench configurations, preventing collapse due to backfill compaction or lateral soil stress. 

Commercial Building HVAC Retrofits

Enables integration of geothermal circuits within structural basements or confined shafts, maintaining pipe routing without inducing wall or slab stress. 

District Heating and Cooling Networks

Used in subsurface manifolds and centralized geothermal loops to secure exchanger segments under long-span pipe layouts and differential settlement conditions. 

Hybrid Renewable Energy Systems

Supports interfacing between geothermal loops and auxiliary systems (solar-assisted or gas backup) by isolating thermal and mechanical stress at junctions. 

Industrial Process Cooling Systems

Holds geothermal exchangers supplying process chillers in chemical or manufacturing environments, managing pipe motion from cyclic thermal load profiles. 

Bracket Load Rating Under Static and Dynamic Conditions

Geothermal Heat Exchanger Bracket is rated to support static vertical pipe weights and dynamic uplift forces due to thermal buoyancy and transient ground movement. Finite Element Analysis (FEA) confirms bracket stiffness and deflection limits under combined loading scenarios, ensuring bracket compliance with ASCE 7-16 and IGSHPA vertical bore design standards. 

Geothermal Heat Exchanger Bracket ensures angular stability and spacing accuracy of U-bend pipe pairs in vertical or inclined boreholes. Machined locating guides and self-centering mechanisms reduce installation deviation, ensuring uniform grout coverage and thermal conductivity across the entire loop length, thereby improving system COP and heat exchange efficiency. 

 

Geothermal Heat Exchanger Bracket

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure bracket integrity under long-term buried conditions in variable soil types?

Frigate conducts geotechnical simulations using finite element analysis to model stress distributions from clay, sand, and mixed soil compositions. Each Geothermal Heat Exchanger Bracket is tested under simulated burial depths exceeding 15 meters. The design includes venting and drain features to minimize hydrostatic pressure buildup. This prevents bracket deflection and ensures stability over multi-decade service life. 

What material options does Frigate offer for geothermal brackets used in high-salinity or chemically aggressive soils?

Frigate manufactures Geothermal Heat Exchanger Brackets using duplex stainless steel, fiber-reinforced polymers, and epoxy-coated carbon steel. These materials are selected based on resistivity and chloride content of site-specific soil samples. Salt spray (ASTM B117) and immersion tests validate long-term corrosion resistance. This ensures the bracket maintains mechanical properties and dimensional tolerance in harsh subsurface environments. 

How are Frigate’s brackets validated for thermal cycling performance in geothermal loops?

Frigate performs accelerated thermal cycling tests simulating ground loop operation between 5°C and 60°C across thousands of expansion-contraction cycles. Brackets are evaluated for stress cracking, joint fatigue, and material creep. Precision-machined interfaces prevent stress risers on pipe surfaces. This ensures reliable bracket performance over years of repeated thermal fluctuation. 

Can Frigate brackets accommodate custom borehole geometries or angled loop paths?

Yes, Frigate provides Geothermal Heat Exchanger Brackets with variable pitch configurations and rotational alignment features. This allows precise positioning in slanted or offset borehole profiles. Custom jigs and alignment tabs are available for non-standard loop angles. This ensures pipe spacing and orientation remain consistent with thermal modeling requirements. 

 

How does Frigate design brackets to avoid stress concentration at pipe contact points?

Frigate brackets feature contoured saddles with large contact radii to reduce localized surface stress. Bracket-to-pipe interfaces are modeled for stress distribution under both static and dynamic loads. The design avoids sharp edges and uses compliant surfaces to prevent micro-crack initiation. This approach extends the lifespan of HDPE or PEX piping in geothermal systems. 

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LOCATIONS

Global Sales Office

818, Preakness lane, Coppell, Texas, USA – 75019

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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Geothermal Heat Exchanger Bracket

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