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BH, BDH, BS, BDS Models – Hot Water and Steam Absorption Chillers

BROAD absorption chillers turn the heat of hot water (BH and BDH series) or steam (BS and BDS series) into cooling, in single or double effect.

Specifications

Hot water, double effect

Cooling capacity: 150 kW – 11,630 kW
Hot water inlet: 165 °C – 180 °C

Hot water, single effect

Cooling capacity: 150 kW – 10,230 kW
Hot water inlet: 70 °C – 180 °C

Steam, double effect

Cooling capacity: 150 kW – 11,630 kW
Steam pressure: 0.4 MPa – 1 MPa

Steam, single effect

Cooling capacity: 233 kW – 11,630 kW
Steam pressure: 0.1 MPa – 1 MPa

All units: cooling only, supplied with a hot water or steam valve.

How does it work?

The heat of the hot water or steam heats a lithium bromide (LiBr) solution, which releases water vapour. This vapour is condensed by the cooling water, then the water flows into the evaporator, under high vacuum: there it evaporates and cools the chilled water. The vapour is then absorbed again by the solution, which goes back to be heated, and the cycle starts over. Cooling is thus produced with heat, without a compressor.

Key benefits

2-way or 3-way hot water control valve: it reduces the heat input at partial load
Steam units can also act as a steam condenser while cooling the water in the evaporator

Applications

Hot water (BH, BDH): cogeneration, industrial heat, solar heating, district heating, biomass, incineration plants
Steam (BS, BDS): industrial processes, cogeneration plants, biomass boilers, steam turbine exhaust

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