50 Years Of Trust | Engineering The Next Energy ERA
50 Years Of Trust | Engineering The Next Energy ERA
Ecotherm | | 4 Lac – 25 Lac kCal/hr. | | Up to 82% Thermal Efficiency
Reliable, cost-effective high-temperature thermic fluid heating for industries requiring continuous process heat from coal.
ISOTEX Ecotherm Coal Fired Thermic Fluid Heaters combine advanced multi-grade coal combustion technology with intelligent automation, delivering reliable high-temperature heat transfer for continuous process industries. Engineered to handle the full spectrum of Indian and imported coal grades — from high-GCV imported coal to low-GCV Indian coal, lignite, and washery rejects — the Ecotherm ensures consistent thermal output regardless of coal quality variability.
As a complete turnkey solution — from coal handling and combustion system to thermic fluid circulation, emission control, and SMARTWIZ IoT monitoring — every Ecotherm unit is factory-engineered, dramatically reducing on-site construction time and costs.
With 4,000+ heater installations globally, up to 74% reduction in site installation costs, and over 50 years of coal-fired thermal system expertise, ISOTEX delivers precise temperature control using cost-effective, abundantly available coal fuels across India.
ISOTEX Ecotherm coal fired thermic fluid heaters are available across a comprehensive capacity spectrum — from 4 Lac kCal/hr. to 25 Lac kCal/hr. — to meet diverse industrial high-temperature heating requirements.
| Parameter | Value/Range | Unite/Notes |
|---|---|---|
|
Heat Output Capacity |
4,00,00 – 25,00,000 |
kCal/hr |
|
Max. TF Outlet Temperature |
Up to 280 |
°C (Standard) |
|
Max. TF Outlet Temperature |
Up to 300+ |
°C (Custom/On Request) |
|
Thermal Efficiency |
Up to 82% |
On NCV Basis (BS 845) |
|
Heater Series |
ECOTHERM |
Factory – Assembeled Modular Design |
| Parameter | Value/Range | Unite/Notes |
|---|---|---|
|
Heat Output Capacity |
4,00,00 – 25,00,000 |
kCal/hr |
|
Max. TF Outlet Temperature |
Up to 280 |
°C (Standard) |
|
Thermal Efficiency |
Up to 82% |
On NCV Basis (BS 845) |
|
Heater Series |
ECOTHERM |
Factory – Assembeled Modular Design |
ISOTEX Ecotherm biomass fired thermic fluid heaters are engineered with advanced multi-fuel combustion systems capable of efficiently burning the full spectrum of agricultural, forestry, and industrial biomass waste fuels — converting low-cost waste streams into high-value process heat.
Domestically sourced coal with variable GCV (3,000–4,500 kCal/kg); cost-effective primary fuel for continuous thermic fluid heating with stationary or bubbling bed grate systems
High-GCV imported coal from Indonesia, South Africa, and Australia (5,000–6,500 kCal/kg); superior thermal performance for high-capacity, high-efficiency thermic fluid applications
Low-rank lignite with high moisture content (2,500–3,500 kCal/kg); optimised with dedicated bubbling bed combustion technology for full energy extraction
Sub-standard and washery reject coal grades (2,000–3,200 kCal/kg); utilised with advanced grate systems for maximum heat recovery from otherwise waste fuel streams
Blended coal strategy combining Indian and imported coal grades; optimises fuel cost while maintaining consistent GCV input and stable thermic fluid outlet temperature
ISOTEX Ecotherm biomass fired thermic fluid heaters deliver outstanding environmental performance — combining the inherent carbon-neutral and circular economy advantages of biomass waste combustion with advanced emission control and EcoVadis-certified manufacturing practices.
Multi-cyclone separator plus bag house filter achieves over 95% PM removal — stack emissions comply with CPCB norms for biomass-fired industrial heaters across all states
ISOTEX holds EcoVadis sustainability certification providing independent third-party verification of our environmental, ethical, and supply chain management practices
Biomass-fired renewable energy qualifies for renewable energy credits and carbon offset income under national and international carbon trading schemes
SMARTWIZ IoT generates verifiable carbon savings, biomass consumption, and energy efficiency records for annual ESG sustainability disclosures and investor reporting
Utilising paddy straw, mustard stalk, and crop residue as heater fuel directly reduces open field burning in Punjab, Haryana, and UP — a key contributor to seasonal air quality crises
Converting agro-waste (rice husk, mustard stalk, cotton stalk, bagasse) from waste disposal problem to productive fuel — eliminates field burning and supports India’s circular economy targets
Biomass combustion is recognised as carbon-neutral under UNFCCC international accounting standards when sourced from agricultural waste — combustion releases only the CO₂ absorbed during crop growth
Combustion System Options |
1. Stationary Grate — Ideal for sized coal, larger lumps, and medium-GCV coal grades requiring extended burn time on a fixed bed |
2 Bubbling Bed — Advanced fluidised bed technology for mixed coal grades, variable moisture content, and low-GCV coals for consistent combustion |
3 Fluidized cum Bubbling — Advanced combined fluidised and bubbling bed technology for mixed coal and biomass co-firing — maximum fuel flexibility for variable fuel availability scenarios |
The Ecotherm delivers factory-assembled, plug-and-play biomass fired thermic fluid heating — eliminating traditional on-site erection costs and timelines while providing class-leading combustion flexibility, advanced automation, and long-term reliability for biomass HTF applications.
Operating Parameter | Value |
Heater capacity | 20,00,000 kCal/hr. |
Annual operating hours | 7,200 hrs. |
Coal type | Indian Coal (NCV ~3300 kCal/kg) |
Coal consumption (approx.) | ~5321 tons/year |
Annual Coal fuel cost (approx.) | ₹ 3.72 Cr |
Equivalent ConventionalCoal -Fired Thermic Fluid Heater | ₹ 4.72 Cr |
Annual fuel cost savings | ₹ 34 Lakh |
Typical Payback Period | 2.5 – Years |
Typical Investment Payback
Total Annual Savings
Annual Coal Fuel Cost
Built to Perform. Proven in the Field. Explore ISOTEX Ecotherm coal fired thermic fluid heater installations showcasing proven capability across industries.
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Our engineering team responds within 24 hours. Share your capacity requirements and fuel preference. We’ll engineer the right solution.
