Grouped heating architecture
The 500 kW heating duty is divided into five 100 kW groups, with group-level monitoring and protection coordinated by one PLC-based control system.
ISO-Certified Manufacturer
ISO 9001 · 14001 · 45001PV-Powered Industrial Air Heating Project
A 500 kW heater-side package engineered for a photovoltaic-powered refinery air-heating application.
Project overview
Application and supply scope.
The project configuration below summarizes the supplied equipment and its process application.
- Year
- 2024
- Region
- Heilongjiang, China
- Application
- Refinery process-air heating
- Supply scope
- DC heater, electrical equipment and controls
The engineering challenge
Conditions shaping the heating duty.
The heater had to operate on a DC electrical interface while retaining the temperature control and protection expected of industrial process equipment.
The engineering task was to coordinate five heating groups, outlet-air temperature feedback and local or remote operating authority within the plant control environment.
Equipment configuration
What the package includes.
Equipment capacities, interfaces and controls are matched to the project application.
- Rated power
- 500 kW
- Supply interface
- DC1000V
- Heating groups
- 5 × 100 kW
- Heated medium
- Air
- Automation
- Siemens SIMATIC S7-200 SMART PLC
- Communication
- Modbus RTU / RS485; DCS integration
Delivered heating architecture
500 kW across five heating groups.
A DC1000V heater interface with group-level temperature protection and PLC-based control.
Electrical interfaceDC1000V supply
Total heating duty500 kW electric heater
Group 1100 kW
Group 2100 kW
Group 3100 kW
Group 4100 kW
Group 5100 kW
Heated mediumProcess air
Outlet-air temperature feedbackPLC controlHeating-group operation
Our approach
Engineering the complete heating package.
Outlet-temperature regulation
Outlet-air temperature is incorporated into operating logic to start and stop heating against the configured temperature setpoint.
Protection and plant integration
Heating-group overtemperature protection, breaker-trip logic, local and remote emergency shutdown and Modbus communication are incorporated into the heater-side package.
Project value
Delivery and application value.
Using solar electricity for process heat
The system enables photovoltaic electricity to serve a 500 kW industrial process-heating duty. Where solar electricity displaces purchased electricity or fuel-based heating, it can reduce reliance on those energy sources and create energy-cost and emissions benefits. Actual savings depend on solar availability, the supply arrangement, operating hours and the heating system being replaced.
Delivered heater-side scope
The supplied system combines the DC electric heater, electrical connection and protection equipment, temperature monitoring and local/remote controls.
A defined system boundary
This case demonstrates the DC heater interface and control architecture. It does not establish that XGTHERMAL supplied the complete photovoltaic generation plant, or that the heating duty runs exclusively on solar power at all times.
Let’s discuss your
heating requirements.
Share your specifications or drawings with our engineering team.