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Hub / Commercial Clean Tech & MEP / Dual-Fuel Boiler & Biofuel HVO

Commercial Dual-Fuel Boiler & Biofuel HVO Sizer

Model commercial hydronic and steam boiler fuel switching to Hydrotreated Vegetable Oil (HVO renewable diesel), B20 biodiesel, and renewable natural gas (RNG). Calculate burner firing rates, fuel preheating requirements, Scope 1 GHG reductions (-85%), and levelized carbon abatement costs ($/tonne CO2e).

ASTM D975 / EN 15940 Drop-In

1. Boiler Rating & Thermal Output

Boiler Capacity (BHP / Boiler HP): 1,000 BHP

100 BHP (3.3 MBH)2,000 BHP4,000 BHP (134 MBH)

Boiler Thermal Efficiency (%): Steam 80–84%, Hydronic 85–90%

Annual Operating Hours: Space heating + base DHW

Average Firing Capacity Factor (%): 65%

Reflects outdoor air reset and modulated burner turndown

2. Biofuel / Renewable Fuel Selection

Target Clean Fuel Switching:

Baseline Fossil Fuel:

Clean Fuel Price ($/gal or $/thm):

Clean Fuel Consumption: 768,410 Gallons / yr

Burner Firing Rate: 246.3 Gal / hr

3. Retrofit CapEx & Carbon Credits

Burner & Tank Retrofit CapEx ($): Dual-fuel linkage, filtration, piping

Carbon Offset Value ($/tonne): Voluntary / compliance market value

Include Electric Fuel Line Trace Pre-Heating (Required for B100 in winter)

Dual-Fuel Burner Combustion & Decarbonization Profile

Simulation of burner firing, fuel atomization, and lifecycle Scope 1 GHG reductions

Baseline Gas HVO Biofuel GHG Avoided

Baseline Emissions 5,820 Tonnes/yr

Clean Net Emissions 698 Tonnes/yr

Scope 1 Abatement -5,122 Tonnes (-88.0%)

Environmental Impact & Pollutant Reduction 5,122 Tonnes CO2e Avoided

Lifecycle Greenhouse Gas (GHG) Reduction: -88.0% (-5,122 t CO2e)

Particulate Matter (PM2.5 / Smoke Spot #) Reduction: -35.0% (Zero Visible Soot)

Sulfur Oxides (SOx) Elimination: -100.0% (Ultra-Low Sulfur < 5 ppm)

Decarbonization Financial Pro-Forma $42.10 / Tonne Abated

Retrofit CapEx $85,000 Burner & Controls

Annual Fuel Delta +$395,200 Green Fuel Premium

Carbon Offsets +$179,270 Credit Monetization

Net Cost / Tonne $42.16 / t Clean Heat Metric

Net Annual Operating Impact: +$215,930 / yr

Provides immediate compliance with NYC Local Law 97 & BERDO

Engineering Basis & Compliance Standards

HVO Chemistry (Hydrotreated Vegetable Oil) HVO is a paraffinic bio-based liquid fuel synthesized through hydrotreatment of waste lipids and used cooking oil. Unlike fatty acid methyl ester (FAME) biodiesel, HVO is chemically identical to fossil diesel hydrocarbons (EN 15940 / ASTM D975), exhibiting superior cold filter plugging points (-20°C to -30°C) and zero gumming.

Burner Combustion & Atomization Because HVO possesses high cetane (>70 vs ~45 for fossil #2) and slightly lower density (0.78 kg/L vs 0.84 kg/L), volumetric fuel flow increases by ~3%–4% to deliver equivalent thermal BTU input. Modern dual-fuel burners modulate smoothly with minor linkage/cam re-tuning.

Building Emissions Caps (LL97 / BERDO) Municipal building decarbonization mandates (e.g. NYC Local Law 97, Boston BERDO, Maryland Building Energy Standards) impose severe financial penalties ($268/tonne CO2e over cap). Switching oil boilers to HVO avoids $500k+ in annual municipal penalty assessments while delaying multi-million-dollar electrification overhauls.