CIRCULATION HEATER INDUSTRIAL HEATER SANGI ELECTRIC

SANGI ELECTRIC (Industrial Circulation Heater) Fluid Circulation Heater

SANGI ELECTRIC Circulation Heater is an electric heater designed to heat fluids circulating within a pipeline or industrial production system. It is suitable for preheating fuel oil to the required high temperature before feeding it into furnaces, as well as other compatible fluid applications in circulation heating systems.

The heater can be customized according to the desired fluid temperature and flow rate, allowing installation into production systems based on process requirements.

The product supports custom design and manufacturing based on user needs by considering the type of fluid, target temperature, flow rate, and pipeline system conditions to determine appropriate electrical power and engineering details.

Features

• Brand: SANGI ELECTRIC
• Product Type: Industrial Circulation Heater
• A circulation heater for heating circulating fluids
• Suitable for preheating fuel oil before feeding into furnaces
• Can be applied to other suitable fluid types
• Designed to work with industrial pipeline and production systems
• Customizable design according to desired fluid temperature
• Customizable design according to fluid flow rate
• Suitable for custom design and manufacturing
• Suitable for heating fluids in the production process
• Can be designed to replace existing heating equipment based on engineering requirements

Technical Specifications

Specifications	Details
Brand	SANGI ELECTRIC
Product Name	Circulation Heater
Product Type	Industrial Electric Circulation Heater
Heating Principle	Electrical Resistance Heating
Heating Medium	Fuel Oil or Other Compatible Circulating Liquids
Main Application	Fuel Oil Preheating for Furnace Systems

Installation Integrated into Industrial Liquid Circulation System Design Temperature According to Required Liquid Temperature Liquid Flow Rate According to Application Requirements Rated Wattage To Be Determined According to Heating Requirements Rated Voltage To Be Confirmed According to Design Operating Pressure To Be Confirmed According to System Design Heater Dimensions Custom Made According to Design Heater Material To Be Confirmed According to Liquid Compatibility Pipe Connection To Be Confirmed According to System Requirements Temperature Controller To Be Specified According to System Design Manufacturing Type Custom Design / Made to Order Catalog Reference SCMA General Catalog Vol.5, C3-14

Note: Electrical wattage, voltage, material, heater dimensions, pressure and size of connections are not specified as standard values in the catalog; therefore, they must be confirmed from the manufacturing drawings and system specifications before ordering.

How Circulation Heater Works

The circulation heater operates on the principle of heating liquid while it flows through a system. The heating element converts electrical energy into heat which is then transferred to the flowing liquid in the heated area.

As the liquid receives heat, its temperature increases according to the heater's wattage, flow rate, specific heat capacity of the liquid and thermal losses of the system.

The design must consider a relationship between flow rate and wattage to achieve desired temperatures while preventing overheating in the heating element area.

Fuel Oil Preheating Application

Circulation Heater is suitable for warming up the furnace oil to meet the required temperature before it enters the combustion system or equipment that requires high-temperature furnace oil.

Warming up the furnace oil can help improve its flow characteristics in the system. The appropriate temperature must be determined based on the type of furnace oil, viscosity, and requirements of the receiving equipment.

The selection should consider the properties of the furnace oil such as viscosity, recommended operating temperature, and safety limitations to prevent overheating beyond the fluid's and system’s suitability.

Usage with Circulating Fluids

In addition to furnace oil, heaters can be designed for heating other circulating fluids in industrial systems. Compatibility between the fluid and contacting materials must be checked along with thermal conditions of the system.

The design should consider properties such as density, specific heat, viscosity, corrosion potential, and risk of degradation when heated.

It is not advisable to assume that all types of heaters are compatible with every type of oil or chemical without verifying manufacturer specifications.

Design Based on Temperature and Flow Rate

The catalog specifies that the product can be designed to suit specific temperature and flow rate requirements for fluids. Therefore, heater selection should use real system data for design purposes.

Important information includes inlet temperature, required outlet temperature, flow rate, system pressure, and fluid properties.

For continuous operation systems, heat load at the lowest and highest flow rates must be evaluated to ensure safe operation with control systems.

Installation with Production Pipeline Systems

Circulation Heater can be designed for installation into production pipeline systems by defining connection types, flow direction, mounting positions, and maintenance space suitable for the system.

The pressure rating of components, sealing materials, and connections must be verified to accommodate actual operating temperature and pressure conditions. Expansion due to heat should also be considered in piping.

Temperature Control System

The use of Circulation Heater should include an appropriate temperature control system and sensors for monitoring fluid temperature according to production process requirements.

For work involving abnormally high temperature risks, a separate overheating protection system should be installed outside the normal control circuit, including a flow or pump operation check before allowing power to the heater.

Temperature Controller, Flow Switch and other protective devices must be verified as within the delivery scope or additional items to procure.

Custom Order Information

Required Information	Description
Liquid Type	Type of liquid, such as furnace oil or other liquids
Liquid Properties	Viscosity, density, and specific heat of the liquid
Inlet Temperature	Temperature of incoming liquid (°C)
Required Outlet Temperature	Desired temperature of outgoing liquid (°C)
Flow Rate	Liquid flow rate, such as L/min or m³/h
Operating Pressure	Working pressure and maximum system pressure
Heating Capacity	Required heating capacity or calculation data
Power Supply	Voltage, number of phases, and frequency
Pipe Connection	Type and size of pipe connections
Installation Space	Size and installation direction of the space
Temperature Control	Control mode and sensor position
Safety Requirements	Overheating protection, flow check, and pressure protection systems
Drawing / Sample	System drawing or sample part
Quantity	Desired production order quantity

Applications

• Furnace oil preheating system before feeding into the furnace
• Heating system for circulating oil
• Heating system for liquids in a manufacturing process

Control of liquid temperature in industrial machinery

Design of through-flow heating systems

Improvement or replacement of heating equipment in existing pipe systems

Design of specialized liquid warming systems

Circulation Heater Selection Guidelines

• Check the type and physical properties of the fluid
• Determine the required inlet and outlet temperatures
• Specify the minimum and maximum flow rates of the system
• Calculate electrical power based on heat load requirements
• Verify thermal density on the heater surface
• Select materials that are suitable for fluid contact according to application needs
• Check the highest pressure and pipe system specifications
• Determine operating voltage and electrical systems
• Specify temperature control methods and overheat protection systems
• Consider flow monitoring and pump operation systems
• Evaluate installation space limitations and maintenance requirements

Safety Precautions for Use

• Operate within the voltage, power rating, and pressure specified by the manufacturer
• Avoid operating heaters without fluid or insufficient flow unless the system is designed to accommodate this condition
• Install a Flow Interlock or appropriate flow monitoring system
• Install overheat protection devices separate from normal control circuits
• Provide an overpressure protection system as per system design requirements
• Check fluid compatibility with materials, seals, and fittings
• Avoid risks associated with flammable fluids and high temperatures
• Do not use general-purpose heaters in flammable liquid systems without proper safety assessment and design
• Provide appropriate grounding and electrical protection devices
• Inspect joint leaks and pipe system before operation
• Disconnect power supply, isolate pressure, and allow the system to cool down before maintenance

Important Notes Before Purchase

• The product is a Circulation Heater designed for heating circulating liquids
• Catalog specifies usage for preheating oil before entering furnaces
• Can be designed for other suitable fluids
• Customizable according to fluid temperature and flow rate requirements
• Suitable for installation in production line pipe systems
• Must confirm size, power rating, voltage, and operating pressure as per model specifications

Must check the heating element material and liquid contact material

The catalog does not confirm that a circulation pump is included in the set

Must verify whether Temperature Controller, Flow Switch, and safety devices are included in the set

Should prepare fluid data and system type before ordering production

Check equipment list, warranty conditions, and manufacturing lead time before purchasing