The engineering task
A high-temperature consumer is supplied by a closed thermal-oil circuit. Mean oil temperature alone is insufficient: local film temperature at the heating surface must remain below the fluid stability limit.
Piping, consumer and control valve determine pump head. Minimum circulation, heat-up, thermal expansion, pump failure and blocked-in sections are separate safety cases.
Required design data
- Consumer duty and supply/return temperatures
- Thermal-oil grade and allowable film temperature
- Piping network, elevations and fittings
- Minimum circulation, controls and shutdown concept
Technical solution approach
Balance oil flow
Required mass flow follows from duty, heat capacity and allowable temperature rise.
Determine heater area
Evaluate overall heat transfer, surface loading and local film temperature together.
Size piping and pump
Pressure losses for all operating paths define the system curve used to select pump and control valve.
Check temperature and pressure cases
Calculate cold start, normal operation, shutdown, pump failure and trapped-liquid cases separately.
Define protective functions
Derive minimum-flow bypass, temperature trips, expansion volume and pressure relief from the upset cases.
Expected deliverables
Suitable SOL ALPHA modules
The modules form a technically plausible toolchain. Their final selection and sequence will be confirmed during the later calculation against the applicable code and project conditions.