Waste Heat Recovery based Adsorption System

Working principle
The principle of Adsorption works with the interaction of gases and solids. With adsorption chilling, the molecular interaction between the solid and the gas allow the gas to be adsorbed into the solid. The Adsorption chamber of the chiller is filled with solid material, silica gel, eliminating the need for moving parts and eliminating the noise associated with those moving parts. The silica gel creates an extremely low humidity condition that causes the water refrigerant to evaporate at a low temperature. As the water evaporates in the evaporator, it cools the chilled water. The Adsorption chiller has four chambers; an evaporator, a condenser and two Adsorption chambers. All four chambers are operated at nearly a full vacuum.


Adsorption Chillers
Absorption Chillers
Life Expectancy
Greater than 25 Years
7 to 9 Years
Negligible Maintenance
Require High Maintenance
egeneration Temperature (Hot Water)
Down to 50°C (122°F)
Shuts down at 82°C (180°F), Needs Back-up Heater
Desiccant Use
Silica Gel (Inert)
Lithium Bromide (Highly Corrosive)
Replacement Requirements (Periodic Maintenance)
Not Required
Heat Exchangers, Boilers, Absorbent Replacement Required