JIELI THERMAL KNOWLEDGE CENTER
Engineering guides, project experience and manufacturing updates for thermal oil heaters, industrial steam boilers and complete process-heating systems.
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A 2 million kcal/h gas-fired heater: pressure fluctuations above 120°C, expansion tank vapor and steady operation at 160°C without changing the pump or valve settings.
Read the field case analysis →Review gas transport and heated-tube cooling together when choosing coil diameter and routing.
Read the engineering guide →Use controlled pump operation to assist cold venting only when the pump, piping and heat-source conditions allow it.
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How three connected components support expansion, pump suction and gas release in a thermal oil heating system.
Read the engineering guide →
How 20–30°C and 40°C design temperature differences affect flow, coil temperature, piping and pump power.
Compare circulation designsCold-start mechanisms and a seven-stage boil-out procedure for a 280°C thermal oil system, translated from JIELI’s original technical notes.
Read the original field notesA cycle-based method for plywood, MDF and wood-panel hot-press duty, temperature, circulation and fuel selection.
Size the hot-press system
Mechanical completion, charging, cold circulation, moisture removal, hot commissioning and recorded safeguard tests.
Open the startup checklist
How viscosity, TAN, water, insolubles and boiling-range changes guide maintenance and replacement decisions.
Interpret the test panelRead real project images for capacity, fuel, system boundary, logistics, installation access and buyer due diligence.
Read the field-case guideWorked steam and thermal-oil examples using as-fired LHV, moisture, efficiency and real operating boundaries.
Calculate biomass fuel useFeedwater treatment, condensate return, TDS control and a transparent 10 t/h blowdown example.
Plan the water systemA worked heat-recovery estimate plus dew-point, fouling, draft, controls and business-case checks.
Evaluate heat recoveryResponsibilities, mechanical completion, trips, cold and hot startup, acceptance tests and handover records.
Open the project checklist
Compare construction, operating range, response, transport, water treatment, maintenance and complete plant scope.
Compare WNS and SZS
Understand common gas, oil, biomass and coal model families without selecting equipment from letters alone.
Decode the model familiesCalculate preliminary mass flow, volume flow and pipe diameter, then check hot-fluid hydraulics and pump duty.
Open the worked calculationCapacity, pressure, fuel-use estimates, burner control and a practical WNS1–WNS20 project checklist.
Read the 1–20 TPH guideDuty, temperature, fluid limits, circulation flow and the published YY(Q)L-200 to YY(Q)L-1200 range.
Read the capacity guide
Compare heater-only and complete-system offers across fuel equipment, pumps, tanks, controls, documents, site interfaces and operating cost.
Open the quotation guide
Compare system design, coil-flow calculations, controls, inspection records, included equipment and total project cost.
Open the buyer checklist
Compare real steam demand, code basis, water system, fuel and emissions scope, auxiliaries, inspection and lifecycle cost.
Open the buyer checklistBuild a time-based steam load schedule and select preliminary capacity without arbitrary oversizing.
Calculate preliminary capacity
Estimate flow and hydraulic head, then check hot-fluid properties, NPSH and the operating point.
Review pump selectionEstimate fluid expansion and convert it into a usable tank range with the correct project inputs.
Review tank sizing
Compare gas, liquid-fuel and dual-fuel burner systems, including fuel data, turndown, controls and complete supply scope.
Read the burner guide
Understand the three common names, how the system differs from steam, and the engineering data required before quotation.
Read the terminology guide
Follow water treatment, feedwater, economizer, boiler, steam header, process users, condensate return and blowdown through a complete industrial steam system.
Read the piping guide
Calculation methods, worked examples, fuel-value bases, efficiency factors and annual load profiles for gas-fired industrial heating equipment.
Read the calculation guide
A practical guide to the under-50-mm design window, gas velocity, heat transfer, draft loss, thermal expansion and manufacturing control in double-coil thermal oil heaters.
Read the technical guideA practical engineering workflow for defining steam demand, pressure, load profile, fuel, feedwater, condensate return, controls and boiler-house auxiliaries.
Read the engineering guide
How to define heat duty, operating temperature, thermal-fluid limits, circulation, expansion, fuel equipment and protection logic before selecting a thermal oil heater.
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Compare process needs, temperature and pressure, system layout, maintenance and lifecycle cost before choosing an industrial heating system.
Read the engineering guideHow to define process duty, biomass fuel analysis, circulation, site conditions, controls and supply scope for a Malaysia thermal oil project.
Read the project guideStill deciding on the heating medium? Use the thermal oil heater vs steam boiler comparison. For names such as thermic fluid heater or hot oil boiler, see the terminology guide.
ORIGINAL JIELI TECHNICAL RESOURCE
Read JIELI's original cold-start observations and seven-stage boil-out procedure for a 280°C thermal oil system. An English PDF is available on the article page.
For a source list connecting our original engineering notes with product tables, manufacturing evidence and the documented Indonesia project, download the bilingual reference guide (English / 中文, TXT). It identifies the source and scope of each reference.
Read the original boil-out notes Compare thermal oil heater systems
