Direct Fired Vapor Absorption Chiller: When to Use Gas Instead of Electricity

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For facility managers battling rising energy costs, the direct - fired vapor absorption chiller offers a powerful solution: bypassing the electrical grid entirely. By understanding when gas economics beat electricity, facilities can unlock substantial operational savings.

What Makes Direct - Fired Different ?

Unlike VAMs requiring external steam or hot water, direct - fired vapor absorption chillers integrate the heat source directly. They burn natural gas, biogas, diesel, or fuel oil within the unit to drive the cooling cycle.

BROAD's direct-fired chillers achieve COP values of 1.2-1.3. This means every unit of fuel energy delivers significantly more cooling than burning fuel to generate electricity for an electric chiller.

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When Gas Beats Electricity: The Economics

BROAD's Technology Leadership

• Low - NOx Burners: Clean combustion meeting strict environmental standards.
• Integrated Controls: Optimizes firing rates for high seasonal efficiency.
• Dual - Fuel Capability: Auto-switch between gas and diesel for security.
• Exhaust Recovery: Recovers 140-200°C exhaust for free hot water.

Real Results from Indian Facilities

Decision Framework: Gas or Electric ?

Choose Direct - Fired When:	Choose Electric When:
• Gas prices are favorable • High demand charges(> 30 % bill) • Grid is unreliable • Heating & cooling needed simultaneously	• Electricity < ₹5 / kWh • No gas infrastructure • Seasonal / Low operating hours • Strict combustion permitting issues

The Verdict

For facilities with natural gas access or high grid costs, direct - fired absorption cooling is often the optimal financial and environmental choice.BROAD's 30 years of experience ensures reliable, fuel-flexible cooling with attractive total cost of ownership.