Marine Hot Water Tanks

Marine Electric & Steam Hot Water Tanks | 0.3 m³ Dual – Heating System for Ships & Offshore Installations

The 0.3 m³ Marine Electric and Steam Hot Water Tanks are meticulously engineered to deliver a dependable and uninterrupted supply of heated fresh water for the crew on ships and offshore platforms. This highly adaptable tank supports both electric and steam heating methods, granting operational flexibility and redundancy to effectively meet the rigorous demands of marine environments. It is frequently integrated with the vessel’s freshwater pressure system, guaranteeing a steady flow of hot water for showers, galley operations, cleaning tasks, and sanitation purposes.

Constructed to endure the toughest conditions, this hot water tank amalgamates high thermal efficiency, a sturdy build, and compliance with international marine standards.

Key Features & Significant Benefits

Dual Heating System: It can be heated either through steam or electric elements, providing exceptional operational flexibility and a reliable backup option. This ensures that hot water is always available, regardless of the energy source situation on board.
High Thermal Efficiency: The tank rapidly heats water from 15°C to 65°C, ensuring a continuous and ample supply of hot water for all crew needs. This quick heating capability reduces waiting time and enhances overall convenience.
Safety Compliant: Equipped with a safety valve (set at 0.42 MPa) and thermal insulation, it effectively protects against overpressure and heat loss. This safeguards the crew and the equipment from potential hazards, ensuring a safe working environment.
Corrosion – Resistant Construction: The tank features a galvanized steel outer sheet and a 40 mm thermal insulation layer. This combination ensures long – lasting durability and excellent energy efficiency, reducing maintenance costs and energy consumption.
Easy Integration: Designed for seamless connection with existing freshwater pressure tanks and ship piping systems, it simplifies the installation process and minimizes downtime during integration.

Technical Specifications

Parameter	Value
Model	ZDR – 0.3
Capacity	0.3 m³
Working Pressure	0.4 MPa (at 60°C)
Design Pressure	0.44 MPa
Test Pressure	0.68 MPa
Safety Valve Opening Pressure	0.42 MPa
Inlet Water Temperature	15°C
Outlet Water Temperature	65°C
Working Temperature Range	0°C to 65°C
Design Temperature	80°C
Steam Pressure Requirement	0.3 MPa
Steam Heating Capacity	750 kg/h
Steam Consumption	75 kg/h
Electric Heating Capacity	180 kg/h
Electric Heating Power	12 kW
Power Supply Options	AC380V/50Hz/3φ or AC440V/60Hz/3φ
Thermal Insulation Thickness	40 mm
Outer Galvanized Steel Thickness	0.7 mm

Operational Mechanism

The hot water tank receives cold freshwater from the vessel’s hydrophore or pressure tank. Depending on the available energy source on board, the water is then heated using either steam coils or electric heating elements. The system maintains a water pressure between 0.36 – 0.38 MPa to ensure smooth operation and a consistent supply of hot water throughout the ship.

Hot water is circulated as required, and a return interface enables unused hot water to re – enter the tank for reheating. This improves energy efficiency and minimizes waste, contributing to cost savings and environmental sustainability.

Piping Connections & System Integration

Cold Water Inlet: Connects to the outlet of the freshwater pressure tank, ensuring a continuous supply of cold water to the tank.
Hot Water Outlet: Delivers the heated water to the vessel’s hot water distribution system, providing hot water to various points of use.
Water Return Interface: Links to the hot water return piping for recirculation, optimizing energy usage.
Safety Valve Outlet: Redirects excess pressure to the bilge, preventing potential damage to the tank and the system.
Discharge Outlet: Allows for complete drainage during maintenance, facilitating easy cleaning and inspection.
Steam Inlet/Outlet: Connects to the ship’s steam supply and condensate return, enabling efficient steam – based heating.

Certification & Compliance

This hot water tank is designed and manufactured in strict accordance with international standards. It can be certified by all major IACS (International Association of Classification Societies) member societies, including: