Rated evaporation
State the required rated steam output in kg/h or t/h, including peak demand, warm-up load and distribution losses.
Steam-system specification
Industrial Steam Boiler Selection by Capacity, Pressure and Fuel
30 years of professional manufacturing experience · One of China’s leading industrial boiler manufacturers
Focused on quality, system engineering and equipment reliability, JIELI selects each steam boiler system from the actual load, pressure, water, fuel, delivery constraints and boiler-room scope.
Best where steam is the process mediumDirect steam injection, process heating, sterilization, humidification, reactor or vessel jackets and other steam-consuming duties.
1–35 t/hTypical Evaporation Range
Up to 2.5 MPaSteam Pressure Range
WNS / SZS / SZL / SZW / DZL / DZWFire-tube and water-tube
Selection information
Eight inputs define a credible steam boiler specification
A stable plant needs steam capacity, pressure, combustion, water treatment, condensate, efficiency, controls and the supply boundary to agree with each other.
Rated steam pressure
Provide the required pressure at the process, allowing for distribution pressure drop and saturated or superheated steam condition.
Available fuel
Confirm natural gas, LPG, oil, wood chips, other biomass or coal, together with pressure, composition and other available fuel data.
Local emissions standard
Provide limits for NOx, SOx, particulate matter and stack discharge, plus any continuous monitoring or approval requirements.
Water-treatment scope
Define softened or demineralized water, deaeration, blowdown treatment, condensate recovery and the available raw-water analysis.
System-efficiency target
State the expected efficiency and whether an economizer, condensate recovery, blowdown heat recovery or other measures are required.
Controls and instrumentation
State preferred control components or PLC/DCS platform, automation level, remote communication needs, and preferred instrument grade or brand level.
Scope of supply
Clarify whether the requirement covers the boiler only or a complete plant with burner, water treatment, feed system, stack, controls and site services.
Condensate return engineering
What does one tonne per hour of unrecovered saturated condensate cost?
This comparison isolates the saturated-liquid sensible heat that leaves with 1 t/h of condensate. It makes the pressure effect visible before adding flash-steam recovery, makeup-water treatment, chemical or pumping benefits.
Calculation basis2–12 kgf/cm²(g)1,000 kg/h condensate0°C enthalpy reference100% direct heat equivalence
01 / Pressure conversion
Pabs = (Pg + 1.0332) × 0.0980665 MPa02 / Sensible heat loss
Qloss = hf × 1,000 ÷ 4.1868 kcal/h03 / Natural-gas equivalent
Vgas = Qloss ÷ 8,600 Nm³/h04 / Hourly cost
USD = (Vgas × 4) ÷ 7.20| Gauge pressure | Absolute pressure | Saturation temp. | Saturated liquid hf | Sensible heat loss | Share of hg | Gas equivalent | USD / h |
|---|---|---|---|---|---|---|---|
| 2 kgf/cm²(g) | 2.975 bar(a) | 133.24°C | 560.22 kJ/kg | 133,810 kcal/h | 20.56% | 15.56 Nm³/h | US$8.64 |
| 3 kgf/cm²(g) | 3.955 bar(a) | 143.21°C | 602.98 kJ/kg | 144,020 kcal/h | 22.03% | 16.75 Nm³/h | US$9.30 |
| 4 kgf/cm²(g) | 4.936 bar(a) | 151.35°C | 638.09 kJ/kg | 152,400 kcal/h | 23.22% | 17.72 Nm³/h | US$9.85 |
| 5 kgf/cm²(g) | 5.917 bar(a) | 158.29°C | 668.13 kJ/kg | 159,580 kcal/h | 24.25% | 18.56 Nm³/h | US$10.31 |
| 6 kgf/cm²(g) | 6.897 bar(a) | 164.36°C | 694.55 kJ/kg | 165,890 kcal/h | 25.15% | 19.29 Nm³/h | US$10.72 |
| 7 kgf/cm²(g) | 7.878 bar(a) | 169.78°C | 718.23 kJ/kg | 171,550 kcal/h | 25.95% | 19.95 Nm³/h | US$11.08 |
| 8 kgf/cm²(g) | 8.859 bar(a) | 174.69°C | 739.77 kJ/kg | 176,690 kcal/h | 26.68% | 20.55 Nm³/h | US$11.41 |
| 9 kgf/cm²(g) | 9.839 bar(a) | 179.18°C | 759.58 kJ/kg | 181,420 kcal/h | 27.36% | 21.10 Nm³/h | US$11.72 |
| 10 kgf/cm²(g) | 10.820 bar(a) | 183.34°C | 777.96 kJ/kg | 185,810 kcal/h | 27.98% | 21.61 Nm³/h | US$12.00 |
| 11 kgf/cm²(g) | 11.801 bar(a) | 187.21°C | 795.14 kJ/kg | 189,920 kcal/h | 28.57% | 22.08 Nm³/h | US$12.27 |
| 12 kgf/cm²(g) | 12.781 bar(a) | 190.83°C | 811.29 kJ/kg | 193,770 kcal/h | 29.12% | 22.53 Nm³/h | US$12.52 |
Engineering note: “kg pressure” is treated as kgf/cm² gauge. Saturated-water properties follow IAPWS-IF97; the table uses the saturated-liquid enthalpy only. Direct gas equivalence assumes 100% conversion, so actual purchased fuel is higher after boiler and system efficiency. It excludes flash-steam recovery, makeup-water cost, treatment chemicals and piping losses. References: IAPWS-IF97, NIST steam tables and the U.S. DOE condensate-return guidance.
Boiler construction
Fire-tube, water-tube or biomass system?
WNS wet-back fire-tube boilers suit many compact industrial duties. SZS water-tube systems support higher output, pressure and response requirements. Biomass systems add fuel handling, furnace, ash and flue-gas treatment scope.
- Fire-tube system: compact, familiar and serviceable
- Water-tube system: capacity, pressure and response flexibility
- Biomass system: fuel logistics and emissions designed together
- Multiple-boiler arrangement: turndown, redundancy and maintenance
WNS project evidence
Real WNS wet-back steam boiler installations and manufacturing
Four verified photos from the JIELI THERMAL project library show the installed boiler, burner interface, boiler-room arrangement and a workshop production row.
Capacity-led search
Common industrial steam boiler capacity bands
Capacity terms help buyers find a starting point, but pressure, feedwater temperature and steam condition must be defined before a model or fuel rate is confirmed.
| Capacity query | Output | Common configuration | Selection note |
|---|---|---|---|
| 1 ton steam boiler | 1,000 kg/h | Compact fire-tube boiler | Check peak demand and burner turndown |
| 2 ton gas steam boiler | 2,000 kg/h | WNS gas/oil boiler | Confirm gas pressure and feedwater temperature |
| 4 TPH steam boiler | 4,000 kg/h | Fire-tube or project-specific option | Evaluate condensate return and economizer |
| 10 ton biomass steam boiler | 10,000 kg/h | Biomass furnace and boiler system | Fuel analysis and emissions scope are essential |
| 20 TPH industrial steam boiler | 20,000 kg/h | Engineered water-tube system | Review redundancy, pressure and site logistics |
| 35 TPH industrial steam boiler | 35,000 kg/h | Engineered water-tube or multi-boiler plant | Confirm pressure, site logistics, redundancy and water-treatment capacity |
Boiler-room scope
Efficiency is decided by more than the boiler body
- Water preparationSoftening / RO as required
- FeedwaterTank, deaeration, pumps
- Heat recoveryEconomizer / condensate
- BlowdownControl and heat recovery
- AutomationBurner, level, pressure, trips
To verify manufacturing capability and inspect real project photos, use the JIELI THERMAL steam boiler product and factory resources.
Real manufacturing & project evidence
Industrial steam boiler production across gas, biomass and coal fuels
Real fabrication, dispatch and installed-system records are grouped on this product page. The flat structure gives buyers immediate evidence while giving every image a clear, crawlable steam-boiler context.
Gas-fired steam boiler systems
WNS fire-tube packages and SZS water-tube installations with real burner, piping and boiler-room interfaces.
Biomass-fired steam boiler systems
DZL, DZG and DZW boilers for wood chips and other qualified biomass fuels, shown from fabrication through field installation.
Coal-fired steam boiler fabrication
Furnace and coil evidence for DZL and SZL industrial steam boiler series.
Responsive WebP images are lazy-loaded; H.264 video uses metadata preload so this evidence section does not delay the first page view.
Engineering FAQ
Questions that materially change steam-system selection
A reliable quotation needs process and water-side data. A capacity-only request cannot establish consumption, controls or system scope.
How is industrial steam boiler capacity selected?
Calculate connected demand, diversity, startup demand, distribution losses and future margin. Then confirm pressure, steam condition, water, condensate, fuel and load profile.
What is the difference between fire-tube and water-tube boilers?
Fire-tube units pass combustion gas through tubes surrounded by water and are common for many industrial duties. Water-tube units circulate water through externally heated tubes and generally suit higher capacity, pressure or faster response.
Why does condensate return matter?
Hot condensate reduces makeup water, fuel and chemical treatment. Its return rate and temperature affect the feed system and expected efficiency.
What data is needed for a 10 TPH quotation?
Provide output, pressure, steam condition, fuel, feedwater quality, condensate return, operating hours, emissions limits and project location.
Request a selection check
Send the eight selection inputs for an engineering review.
Rated evaporation, pressure, fuel, emissions, water treatment and condensate plan, efficiency target, controls, supply scope and project country.