A fluid or tank electric heater transfers resistance heat into a process liquid through a compatible heating surface.
A fluid or tank electric heater transfers resistance heat into a process liquid through a compatible heating surface. An immersion assembly heats liquid inside a vessel; a circulation arrangement heats liquid passing through a chamber; a suction heater concentrates heat near a withdrawal point. These arrangements answer different process needs. Selection depends on the liquid's allowable surface temperature, viscosity, chemistry and movement around the elements. A target tank temperature alone does not establish a suitable heater, because the element surface can be substantially hotter than the bulk fluid.
Start with fluid properties, operating level and the heating duty, then define the element arrangement and protection strategy for bulk heating, localized withdrawal heating or a circulating thermal-fluid system.
For heating liquid within a storage or process vessel. Define the mounting connection, immersed length, minimum liquid level and withdrawal clearance before considering the element bundle and electrical duty.
Enquire about this configurationAn entry through the upper vessel opening can position heating elements below the liquid surface. Review the access opening, supports and complete insertion path against the tank drawing.
Enquire about this configurationLocal heating around the withdrawal region can address viscosity at pump-out. Specify the required outlet condition and flow, since this duty differs from bringing the entire stored volume to temperature.
Enquire about this configurationFor a pumped heat-transfer-fluid loop serving a process load. The heater, circulation conditions, expansion provision and controls must be assessed together using the selected fluid's technical data.
Enquire about this configurationFor a drum-heating arrangement using tubular heating elements, specify the vessel interface and how heat reaches the contents. This construction differs from a flexible silicone drum wrap and needs its own mounting, surface-temperature and operating-condition review.
Enquire about this configurationWhere the equipment design allows the heating elements to be withdrawn for service, define the isolation tube or other process boundary and the available removal clearance. Confirm the exact construction and maintenance procedure before assuming elements can be removed while the vessel remains in service.
Enquire about this configurationDiscuss the sheath, connection and seal materials against the complete fluid composition and cleaning method. A generic stainless-steel description is insufficient for a corrosive process.
Use the vessel drawing to discuss heated length, inactive zones and clearance from walls, sediment and moving parts. Keep elements within the defined operating liquid envelope.
Compare whole-vessel heating with localized outlet heating. Record mixing conditions and any regions where the product can stagnate or accumulate deposits.
Separate routine process regulation from independent temperature protection and low-level or low-flow shutdown. Allocate each sensor and interlock to the heater package or plant system.
Share these details with your inquiry. Product ratings and operating limits are confirmed for the selected configuration.
| What to specify | Unit / format | Selection guidance |
|---|---|---|
| Fluid identity and condition | composition / viscosity | Provide the exact fluid, concentration, contamination and viscosity across startup and operating conditions. |
| Heating duty | kW / L / min | State liquid volume or flow, starting temperature, target temperature and required warm-up time. |
| Process temperature | °C | Distinguish normal bulk temperature, maximum permitted fluid film temperature and upset conditions. |
| Pressure and connection | bar / mm | Provide design pressure, connection standard, opening dimensions and mounting orientation. |
| Element surface loading | W/cm² | Assess allowable loading using fluid sensitivity, circulation, deposits and sheath compatibility. |
| Power supply | V / Hz / phase | Identify the site supply, available electrical capacity and preferred staging or modulation interface. |
| Liquid coverage and flow | mm / L/min | Define minimum operating level or circulation and how those conditions will be monitored. |
| Service envelope | mm | Show tank internals, supports, terminal access and the space needed to remove the complete assembly. |
Provide the exact fluid, concentration, contamination and viscosity across startup and operating conditions.
State liquid volume or flow, starting temperature, target temperature and required warm-up time.
Distinguish normal bulk temperature, maximum permitted fluid film temperature and upset conditions.
Provide design pressure, connection standard, opening dimensions and mounting orientation.
Assess allowable loading using fluid sensitivity, circulation, deposits and sheath compatibility.
Identify the site supply, available electrical capacity and preferred staging or modulation interface.
Define minimum operating level or circulation and how those conditions will be monitored.
Show tank internals, supports, terminal access and the space needed to remove the complete assembly.
For batches that need controlled warming or temperature maintenance. Include vessel losses, product changes and cleaning cycles so the heater specification reflects more than the normal production temperature.
For viscosity management during storage or pump-out. Identify whether the process needs a warm bulk volume or a locally heated withdrawal stream before selecting the arrangement.
For transferring heat to remote equipment through a circulating fluid. Assess heater loading alongside the fluid's film-temperature limit, pump behavior and process demand at reduced flow.
Separate heat needed for warm-up from heat needed to offset vessel losses or continuously heat an incoming stream. Provide the process schedule and the electrical capacity available during startup.
Evaluate fluid chemistry, deposits and local flow before choosing a surface loading. Check the lowest liquid level and the conditions that could expose a heated section.
Confirm pressure connections, supports, service access and the shutdown conditions on one drawing. For a classified location, establish the required equipment approval scope before a design is selected.
Send your application details, drawing and planned quantity. We can review the configuration and the information needed for a quotation.
These references explain heating principles. Confirm the ratings, approvals and operating limits of the proposed VELHEAT configuration in its own documentation.
General relationship between watt density, medium, flow and sheath temperature; no supplier ratings adopted.
