6t Coal Boiler Supplier Energy Saving Latvia

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High-Performance HVAC | WBDG - Whole Building Design Guide

Nov 07, 2016 · Absorption chillers can be direct-fired, using natural gas or fuel oil, or indirect-fired. Indirect-fired units may use different sources for heat: hot water or steam from a boiler, steam from district heating, or waste heat in the form of water, air, or other gas.

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