Marine Calorifier Tanks

Marine Calorifier Tanks

Certificate: CCS, GL, BV certificate, etc.
Delivery Time: 15 days
Place of Origin: China
Packing Details: Export standard packaging.

Category:

Marine Hot Water Calorifier Tanks

Our Marine Hot Water Storage Tanks, also known as marine calorifier tanks, are precision-engineered to provide dependable, high-capacity hot water supplies for a diverse range of vessels and offshore installations worldwide. Whether for crew quarters, galley services, or sanitation systems, these high-efficiency water heaters consistently deliver excellent performance, ensuring comfort and operational efficiency in the most demanding marine environments.

Available in three distinct power configurations—electric, steam, and dual-power (steam and electric combination) —our calorifiers offer the flexibility to match your vessel’s specific energy sources and operational requirements. Designed with optional integrated pump systems and constructed from top-quality marine-grade materials, every tank strictly adheres to rigorous international standards and holds certifications from all major classification societies.

Engineered for Reliability, Built for Longevity

Marine hot water systems must withstand constant vibration, humidity, and corrosive saltwater atmospheres while delivering consistent performance. Our calorifiers are constructed with robust insulation, corrosion-resistant materials, and precision-engineered components to ensure decades of reliable service. With the option of carbon steel or stainless steel construction, you can select the optimal material for your specific environmental conditions, balancing corrosion resistance with cost-effectiveness.

Trusted by Navies and Commercial Fleets Worldwide

With a proven track record as a trusted supplier for naval vessel applications, our calorifiers have demonstrated exceptional reliability and durability under the most demanding conditions. This naval-grade quality extends to all our commercial offerings, ensuring that whether you operate a cargo ship, ferry, offshore platform, or luxury yacht, you receive the same uncompromising standard of engineering excellence.

Key Features & Benefits

  • ✅ Diverse Heating Methods: Choose from electric, steam, or dual-power (steam + electric) configurations to match your vessel’s available energy sources and operational preferences.

  • ✅ Flexible Pump Integration: Select from single-pump, double-pump, or no-pump configurations based on your hot water circulation needs, system layout, and space availability.

  • ✅ Globally Recognized Quality Certification: Fully approved by all major classification societies, including CCS, ABS, BV, EC, GL (DNV), LR, RINA, and NK, ensuring compliance with international maritime regulations and global acceptance.

  • ✅ Wide Range of Material Options: Available in both carbon steel (cost-effective, epoxy-lined) and stainless steel (maximum corrosion resistance, minimal maintenance) to suit different marine environments and budget requirements.

  • ✅ Superior Insulation: All tanks feature 40 mm thick insulation with 0.7 mm galvanized steel external cladding, minimizing heat loss and improving energy efficiency.

  • ✅ Navy-Trusted Supplier: Proven reliability in naval applications demonstrates the exceptional durability and performance of our products under extreme conditions.

  • ✅ International Maritime Compliance: Designed to meet the requirements of global maritime operations, suitable for vessels trading in all regions.

  • ✅ Comprehensive Range: Capacities from 0.12 m³ to 1.0 m³ cover the needs of small workboats to large passenger vessels.

1. DRG Series Electric Marine Hot Water Storage Tanks

Electric calorifiers provide clean, efficient hot water generation for vessels with adequate electrical capacity. Available with or without integrated pump systems.

Model Capacity (m³) Heating Power (kW) Hot Water Output (kg/h) Working Pressure Design Pressure
DRG-0.12 0.12 12 180 0.4 MPa 0.44 MPa
DRG-0.2 0.2 24 360 0.4 MPa 0.44 MPa
DRG-0.3 0.3 36 540 0.4 MPa 0.44 MPa
DRG-0.5 0.5 48 720 0.4 MPa 0.44 MPa
DRG-1.0 1.0 60 900 0.4 MPa 0.44 MPa

Additional Specifications (DRG Series):

  • Safety Valve Setting: 0.42 MPa

  • Inlet/Outlet Temperature: 15°C / 65°C

  • Insulation Thickness: 40 mm

  • External Cladding: 0.7 mm galvanized steel

  • Test Pressure: 0.66 MPa

2. ZRG Series Steam Marine Hot Water Storage Tanks

Steam-heated calorifiers utilize ship’s boiler steam for efficient hot water generation, ideal for vessels with available steam capacity. Available with or without integrated pump systems.

Model Capacity (m³) Steam Pressure Hot Water Output Steam Consumption Working Pressure
ZRG-0.12 0.12 0.3 MPa 275 kg/h 27.5 kg/h 0.6 MPa
ZRG-0.2 0.2 0.3 MPa 450 kg/h 45 kg/h 0.6 MPa
ZRG-0.3 0.3 0.3 MPa 750 kg/h 75 kg/h 0.6 MPa
ZRG-0.5 0.5 0.3 MPa 1200 kg/h 120 kg/h 0.6 MPa
ZRG-1.0 1.0 0.3 MPa 3250 kg/h 325 kg/h 0.6 MPa

Additional Specifications (ZRG Series):

  • Design Pressure: 0.7 MPa

  • Test Pressure: 1.05 MPa

  • Safety Valve Setting: 0.63 MPa

  • Temperature Range: 0 – 65°C

  • Insulation: 40 mm with 0.7 mm galvanized cladding

3. ZDR Series Dual-Power Marine Hot Water Storage Tanks

Dual-power calorifiers combine steam and electric heating in a single unit, providing unparalleled operational flexibility and redundancy. Available with or without pump systems.

Model Capacity (m³) Electric Power Steam Pressure Electric Output Steam Output
ZDR-0.12 0.12 12 kW 0.3 MPa 180 kg/h 275 kg/h
ZDR-0.2 0.2 24 kW 0.3 MPa 360 kg/h 450 kg/h
ZDR-0.3 0.3 36 kW 0.3 MPa 540 kg/h 750 kg/h
ZDR-0.5 0.5 48 kW 0.3 MPa 720 kg/h 1200 kg/h
ZDR-1.0 1.0 60 kW 0.3 MPa 900 kg/h 3250 kg/h

Additional Specifications (ZDR Series):

  • Working Pressure: 0.4 MPa

  • Design Pressure: 0.44 MPa

  • Test Pressure: 0.68 MPa

  • Safety Valve Setting: 0.42 MPa

  • Power Options: AC380V/50Hz/3φ or AC440V/60Hz/3φ

  • Insulation: 40 mm with 0.7 mm galvanized steel

Applications

Our marine hot water storage tanks are essential for providing domestic hot water on a wide range of vessels and offshore installations:

  • Commercial Vessels: Cargo ships, container vessels, tankers, bulk carriers

  • Passenger Vessels: Ferries, cruise ships, passenger vessels

  • Offshore Platforms: Oil rigs, FPSOs, accommodation barges

  • Naval Vessels: Frigates, destroyers, support ships, auxiliary vessels

  • Workboats & Tugs: Towing vessels, construction support craft

  • Yachts & Mega-Yachts: Luxury vessels requiring premium hot water systems

  • Dredgers & Specialized Craft: Dredging vessels, cable layers, research ships

Frequently Asked Questions (FAQs)

Q1: What is the difference between the DRG, ZRG, and ZDR series?
A: The series designation indicates the heating method:

  • DRG Series (Electric): Uses electric heating elements exclusively. Ideal for vessels with ample electrical capacity and no steam availability.

  • ZRG Series (Steam): Uses steam coils for heating. Suitable for vessels with auxiliary boilers or waste heat recovery systems.

  • ZDR Series (Dual-Power): Combines both steam and electric heating in one unit. Provides operational redundancy—if one heat source is unavailable, the other can maintain hot water supply. This is the most flexible option.

Q2: How do I choose between single-pump, double-pump, and no-pump configurations?
A: The choice depends on your system design:

  • No-Pump: The tank connects to a separate, centrally located circulation pump elsewhere in the system.

  • Single-Pump: A dedicated pump is integrated with the tank, providing independent circulation for that specific calorifier.

  • Double-Pump: Provides redundancy with one operational pump and one standby pump. If the primary pump fails, the standby automatically activates, ensuring uninterrupted hot water supply—critical for vessels with high occupancy or demanding schedules.

Q3: What are the advantages of stainless steel construction over carbon steel?
A:

  • Stainless Steel: Offers superior corrosion resistance, especially in aggressive marine environments. Requires no internal coating, eliminating the risk of coating failure over time. Provides the lowest long-term maintenance and longest service life. Preferred for high-end vessels, naval applications, and where long-term reliability is paramount.

  • Carbon Steel: More cost-effective initially. Internally coated with food-grade, anti-corrosion epoxy and externally painted with marine-grade paint. With proper maintenance of coatings, provides excellent service life at a lower initial investment.

Q4: What classification society certifications are available?
A: Our marine hot water storage tanks are certified by all major IACS (International Association of Classification Societies) members, including:

  • CCS (China Classification Society)

  • ABS (American Bureau of Shipping)

  • BV (Bureau Veritas)

  • EC (European Community)

  • GL (Germanischer Lloyd, now part of DNV)

  • DNV (Det Norske Veritas)

  • LR (Lloyd’s Register)

  • RINA (Registro Italiano Navale)

  • NK (Nippon Kaiji Kyokai)
    Please specify your required certification when ordering.

Q5: What does “hot water output” (kg/h) mean, and how do I calculate my required capacity?
A: Hot water output is the rate at which the calorifier can heat cold water (typically from 15°C to 65°C) continuously. For example, a DRG-0.5 with 720 kg/h output can provide 720 liters of hot water per hour. To determine your required capacity, calculate:

  1. Peak demand periods (e.g., morning showers for all crew)

  2. Total daily consumption (typically 70-100 liters per person per day for accommodation)

  3. Recovery time between peak usage periods
    Our technical team can assist with detailed calculations based on your vessel’s specific parameters.

Q6: What maintenance do these calorifiers require?
A: Routine maintenance ensures long service life:

  • Sacrificial Anodes: If fitted, inspect and replace anodes periodically to protect the tank from galvanic corrosion.

  • Safety Valve Testing: Regularly test safety valves to ensure they open at the correct pressure.

  • Insulation Inspection: Check external cladding for damage and insulation integrity.

  • Electric Heating Elements: For electric models, inspect elements for scale buildup and replace as needed.

  • Steam Coils: For steam models, check for leaks and clean coil surfaces periodically.

  • Internal Inspection: During scheduled dry-docking, inspect internal coatings (for carbon steel tanks) and clean any sediment accumulation.

Attention please: The description was copied from different cooperating manufacturers. The description may be different with the goods, please check with us when order.

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