Fuel selection guide
The heat demand comes first; fuel configuration comes second.
Gas-fired and diesel-fired mold temperature controllers can support thermal oil circulation for molds, presses, rollers and reactors. The production process determines the useful heat demand. Fuel selection then affects the burner, fuel train, storage or pipeline infrastructure, exhaust, maintenance and compliance plan.
1. Calculate the same process duty for both options
Before comparing fuel, confirm mold mass, thermal oil volume, target temperature, starting temperature, required heat-up time, production heat loss, pipeline distance and operating hours. A lower-cost fuel cannot compensate for an incorrectly sized thermal system.
2. Compare site conditions
3. Do not assume every unit is dual-fuel
Yigao can review gas-fired or diesel-fired equipment according to the order. That does not mean every supplied machine can switch fuel in the field. If dual-fuel capability or future conversion is required, it must be stated before quotation so the burner, pipework, controls, safety logic and certification implications can be reviewed.
4. Confirm exhaust and safety early
- Combustion-air supply, equipment-room ventilation and flue route.
- Fuel shutoff, purge, ignition-failure response and emergency stop logic.
- Gas leak detection or diesel spill and fire-control requirements.
- Local electrical, combustion, pressure, environmental and fire regulations.
- Access for burner adjustment, cleaning, inspection and replacement parts.
5. Commercial decision checklist
Ask for separate written configurations when comparing gas and diesel. Each quotation should state heating capacity, burner and fuel assumptions, thermal oil pump data, control and protection, excluded site infrastructure, applicable documents, lead time, warranty and commissioning scope.
6. Data to send Yigao
Provide target temperature, mold or press size, oil volume, heat-up time, pipeline length, daily operating hours, available gas type and pressure, diesel specification, fuel prices, exhaust drawing, installation space, destination country, required standard and quantity.
Buyer FAQ
Gas vs diesel mold heating FAQ
Can one mold temperature controller automatically switch between gas and diesel?
Do not assume every machine is field-switchable or dual-fuel. Yigao can review a gas-fired or diesel-fired configuration by order. If dual-fuel operation is required, state it before quotation so the burner, fuel train, control and safety design can be confirmed.
When is gas usually the better option?
Gas is often considered when a stable pipeline gas or LNG supply, suitable pressure, compliant fuel train and exhaust route are available. The decision should compare local energy cost, supply reliability, installation work and regulatory requirements.
When is diesel usually the better option?
Diesel may be considered where gas infrastructure is unavailable or an independent stored fuel supply is preferred. Buyers must plan compliant fuel storage, filtration, burner maintenance, ventilation, exhaust and local fire-safety requirements.
Does diesel or gas change the required heating capacity?
The process heat demand is determined by the mold, thermal oil circuit, target temperature, heat-up time and production losses. Fuel choice changes the burner and supporting system, while the required useful heat must still be calculated from the process.
What information is needed before choosing gas or diesel?
Provide target temperature, mold or press size, thermal oil volume, required heat-up time, operating hours, available gas type and pressure, diesel specification, local fuel prices, exhaust route, installation space, destination country and required safety standards.