Vapour Absorption Chillers
In an era where industrial cooling demands are surging and electricity costs in India continue to fluctuate, BROAD India provides a transformative solution: the Vapour Absorption Chiller (VAC). Unlike conventional mechanical chillers that rely heavily on grid electricity, our absorption chillers utilize thermal energy - such as industrial waste heat, steam, hot water, natural gas, or even solar energy - to drive the refrigeration cycle. This paradigm shift in HVAC technology offers unprecedented energy efficiency, operational reliability, and environmental sustainability for large-scale commercial and industrial applications.
At the core of our technology is a highly efficient lithium bromide-water absorption cycle. Water acts as the natural, zero-ODP (Ozone Depletion Potential), and zero-GWP (Global Warming Potential) refrigerant, while lithium bromide serves as the absorbent. By completely eliminating the need for ozone-depleting CFCs and HCFCs, BROAD chillers align perfectly with India's stringent environmental regulations and corporate net-zero sustainability goals. Our chillers represent a critical step toward decarbonizing the cooling sector, which currently accounts for a massive portion of national energy consumption.
India's industrial sector, spanning textiles, pharmaceuticals, chemicals, and heavy manufacturing, generates vast amounts of low-grade waste heat. Traditionally exhausted into the atmosphere, this thermal energy can now be captured and monetized. A waste-heat-driven vapour absorption chiller recovers this otherwise lost energy to produce chilled water for process cooling or facility air conditioning, effectively delivering "free cooling" and drastically reducing the facility's overall energy intensity.
Furthermore, many regions across India face grid constraints and high peak tariffs. By deploying a BROAD non-electric chiller, facilities can slash their electrical peak demand load by up to 90%, freeing up critical power infrastructure for core manufacturing processes.
BROAD Absorption Chillers are engineered with virtually no moving parts within the main refrigeration cycle, bypassing the mechanical wear and tear inherent in electric centrifugal or screw compressors. The result is a whisper-quiet, vibration-free operation with an extended lifespan often exceeding 25 years.
The range
Pick your heat source to see which BROAD models can use it.
What heat source do you have?
66–3,300 TRPremium, thermally-driven HVAC solution for industrial and commercial environments. Dual-fuel burner (natural gas or light oil).
100–3,300 TREnergy recovery solution leveraging low-grade thermal energy from industrial processes to produce chilled water.
30–3,300 TRAdvanced dual-cycle system for high efficiency, reliability, and superior energy savings using steam or exhaust.
100–3,300 TRProven, reliable, and cost-effective cooling using single-stage lithium bromide absorption technology.
100–3,300 TRFlexible solution capable of running on steam, hot water, exhaust gas, and natural gas simultaneously.
40–2,200 TRComplete, factory-assembled solution for easy installation and reliable performance. Versatile cooling.
Operates without electricity, ideal for regions with high power costs or limited grid access
Uses water as refrigerant, no CFCs or HFCs, significantly reduced carbon footprint
Minimal moving parts, robust construction, ensuring a long and reliable service life
How it works
Every BROAD absorption chiller runs the same lithium bromide–water cycle; only the heat source changes.
Steam, hot water, exhaust gas or a gas/oil burner heats the generator. No compressor is needed.
The heat boils water vapour (the refrigerant) out of the lithium bromide solution.
The vapour condenses, then evaporates under deep vacuum, pulling heat out of the chilled-water circuit.
Concentrated lithium bromide re-absorbs the vapour and the solution returns to the generator.
Chilled water leaves for process cooling or air conditioning, with water as a zero-ODP, zero-GWP refrigerant.
Compare
| Model | Capacity | Energy source | Highlight | |
|---|---|---|---|---|
| Direct-Fired Vapour Absorption Chiller | 66–3,300 TR | Natural Gas / Light Oil | < 10 ppm NOx | Details |
| Waste-Heat-Driven Absorption Chiller | 100–3,300 TR | Steam / Exhaust, 70–500°C+ | Zero Fuel Cost | Details |
| Two-Stage Absorption Chiller | 30–3,300 TR | Gas / Steam / Exhaust | COP 1.1–1.4 | Details |
| Single-Stage Absorption Chiller | 100–3,300 TR | Hot water 70–95°C / Steam 0.1–1.5 kg/cm² | COP 0.7–0.8 | Details |
| Multi-Energy Absorption Chiller | 100–3,300 TR | Exhaust / Hot Water + Gas / Oil / Steam | Seamless energy switching | Details |
| Packaged Absorption Chiller | 40–2,200 TR | Gas / Oil / Steam | < 10 ppm NOx | Details |
Proven track record delivering reliable cooling solutions across diverse sectors.
Utilize massive amounts of low-grade waste heat to produce chilled water for process cooling.
Ultra-reliable, precision cooling required for cleanrooms and batch processing without the high OPEX.
Stable, low-temperature cooling essential for food safety powered entirely by waste heat.
Case studies
Real-world implementations of this technology across India.
TextileSurat, Gujarat· 2019–20
1,200 TR · 7-month payback
1,200 TR of process cooling from waste CP steam
Read case study
SteelBellary, Karnataka
500 TR Cooling Capacity
500 TR cooling capacity via waste heat recovery
Read case study
Oil & GasVadodara, Gujarat
Waste Heat Recovery
Refinery waste heat converted into chilled water
Read case studyShare your heat source and cooling load. Our engineers will size the right BROAD solution and estimate your savings.