About Absorption Cooling

5000 +

Installations Worldwide

-40°C To 160°C

Temperature Profile

1ºC with Water

Outlet Temperature

upto -5ºC with Brine

Outlet Temperature

ABOUT THERMAX ABSORPTION COOLING TECHNOLOGY

Thermax offers a diverse range of Profetherm Solutions which help you get 'Profit from Heat'. These solutions are energy efficient and reduce operating cost.

Thermax Profetherm Solutions include Lithium Bromide absorption chillers as a cost effective alternative to electricity-driven compression chillers. Our absorption chillers also known as VAMs (vapour absorption machines) are extensively used in a variety of industries as well as commercial buildings for process-cooling and air-conditioning.

Thermax Profetherm range of absorption chillers cater to industrial-cooling, commercial air-conditioning as well as industrial and space heating needs. Our USP lies in identifying the unused heat available at the customer's plant and providing recovery based or live energy based solutions to optimize energy thus reduce operational cost.

Thermax's range of Profetherm Solutions is differentiated by its three cornerstones:

  • Reduction of operational cost
  • Reduction in electricity consumption
  • Reduction in the GHG emissions, Zero Ozone depletion potential


Thermax absorption chillers are designed to be driven by a variety of heat sources – steam, hot water, gas/liquid fuels, exhaust gases or a combination of these fuels. These machines offer an outlet temperature of 1ºC with water and up to -5ºC with brine, a rare feat in the industry.

We also offer Ammonia VAMs (vapour absorption machines) and Hybrid chillers for sub-zero applications, which are driven by multi-fuels like steam, hot water, engine exhaust and gaseous fuels.

With our vast experience of customising absorption chillers for varied applications and an in-depth understanding of varied fuels, we have established our credentials with over 5000 installations worldwide. We are proud to be the only company in the world to offer absorption based cooling and heating solutions for temperature profile ranging from - 40ºC to 160ºC.

Thermax is a leading exporter of VAMs (vapour absorption machines) to countries like USA, UK, Germany, Italy, Spain, Denmark, Turkey, Russia, Saudi Arabia, UAE, Iran, Nigeria, Australia, Thailand, Philippines, Indonesia, Malaysia and Bangladesh.

As a global player, Thermax has singularly focused on improving absorption technology from the twin angles of reliability and efficiency. Thermax's expertise in integrating energy systems to provide total solution to the customer gives us the cutting-edge over other players.

BASICS OF ABSORPTION COOLING

Welcome to Thermax Absorption Cooling Machines, Absorption Chillers, Vapour Absorption Chillers, Absorption Cooling Systems, Air Cooled Heat Exchangers
Welcome to Thermax Absorption Cooling Machines, Absorption Chillers, Vapour Absorption Chillers, Absorption Cooling Systems, Air Cooled Heat Exchangers
Welcome to Thermax Absorption Cooling Machines, Absorption Chillers, Vapour Absorption Chillers, Absorption Cooling Systems, Air Cooled Heat Exchangers
Welcome to Thermax Absorption Cooling Machines, Absorption Chillers, Vapour Absorption Chillers, Absorption Cooling Systems, Air Cooled Heat Exchangers
Vapour Absorption chillers uses water as the refrigerant and Lithium Bromide (LiBr) solution as the absorbent. The process of cooling goes through stages such as evaporation of refrigerant in evaporator, absorption of refrigerant by concentrated LiBr solution in absorber, boiling of diluted LiBr solution to generate refrigerant vapour in generator and condensation of refrigerant vapour in condenser.

The boiling point of water is directly proportional to pressure. At 6 mm Hg absolute pressure the boiling point of water is 3.7°C. To change water from liquid to vapour it has to be heated. The heat, required to change the phase of a liquid to vapour, is called the Latent heat of evaporation.

Lithium Bromide (LiBr) is a chemical similar to common salt (NaCl). LiBr is soluble in water. The LiBr water solution has a property to absorb water due to its chemical affinity. As the concentration of LiBr solution increases, its affinity towards water vapour increases. Also, as the temperature of LiBr solution decreases, its affinity towards water vapour increases. Further, there is a large difference between vapour pressure of LiBr and water. This means that if we heat the LiBr water solution, the water will vaporise but the LiBr will stay in the solution and become concentrated.

Advantages

  • No CFC, hence environment friendly
    - Uses water (R 712) as refrigerant instead of ozone depleting Chlorofluorocarbons
  • No noise
    - No moving parts, therefore no dynamic load
    - No vibration, therefore silent operation
  • Negligible maintenance
  • Negligible power
    - Power required for only small pumps
  • Modular Design
    - Compact design; on skid Delivery
Thermax offers Lithium Bromide absorption machines as a cost effective alternative to electricity-driven compression chillers. Our VAMs (vapour absorption machines) are extensively used in a variety of industries as well as commercial buildings for process-cooling and air-conditioning.

Thermax VAMs (vapour absorption machines) are designed to be driven by a variety of heat sources – steam, hot water, gas/liquid fuels, exhaust gases or a combination of these fuels. These machines offer an outlet temperature of 1ºC with water and up to -5ºC with brine, a rare feat in the industry.

We also offer Ammonia VAMs (vapour absorption machines) and Hybrid chillers for sub-zero applications, which are driven by multi-fuels like steam, hot water, engine exhaust and gaseous fuels.

With our vast experience of customising VAMs (vapour absorption machines) for varied applications and an in-depth understanding of varied fuels, we have established our credentials with over 5000 installations worldwide. We are proud to be the only company in the world to offer absorption based cooling and heating solutions for temperature profile ranging from -40ºC to 160ºC.

Thermax is a leading exporter of VAMs (vapour absorption machines) to countries like USA, UK, Germany, Italy, Spain, Denmark, Turkey, Russia, Saudi Arabia, UAE, Iran, Nigeria, Australia, Thailand, Philippines, Indonesia, Malaysia and Bangladesh.

As a global player, Thermax has singularly focussed on improving absorption technology from the twin angles of reliability and efficiency. Thermax's expertise in integrating energy systems to provide total solution to the customer gives us the cutting-edge over other players.

BASICS OF ABSORPTION COOLING

Welcome to Thermax Absorption Cooling Machines, Absorption Chillers, Vapour Absorption Chillers, Absorption Cooling Systems, Air Cooled Heat Exchangers Vapour Absorption Machine uses water as the refrigerant and Lithium Bromide (LiBr) solution as the absorbent. The process of cooling goes through stages such as evaporation of refrigerant in evaporator, absorption of refrigerant by concentrated LiBr solution in absorber, boiling of diluted LiBr solution to generate refrigerant vapour in generator and condensation of refrigerant vapour in condenser.

The boiling point of water is directly proportional to pressure. At 6mmHg absolute pressure the boiling point of water is 3.7°C. To change water from liquid to vapour it has to be heated. The heat, required to change the phase of a liquid to vapour, is called the Latent heat of evaporation.

Lithium Bromide (LiBr) is a chemical similar to common salt (NaCl). LiBr is soluble in water. The LiBr water solution has a property to absorb water due to its chemical affinity. As the concentration of LiBr solution increases, Its affinity towards water vapour increases. Also as the temperature of LiBr solution decreases, its affinity towards water vapour increases. Further, there is a large difference between vapour pressure of LiBr and water. This means that if we heat the LiBr water solution, the water will vaporise but the LiBr will stay in the solution and become concentrated.

Advantages

  • No CFC, hence environment friendly - Uses water (R 712) as refrigerant instead of ozone depleting Chlorofluorocarbons
  • No noise
    - No moving parts, therefore no dynamic load
    - No vibration, therefore silent operation
  • Negligible maintenance
  • Negligible power - Power required for only small pumps
  • Modular Design - Compact design; on skid Delivery

1984

Agreement with Sanyo, Japan for selling Sanyo vapour absorption chillers

1989

Technical license agreement for manufacturing single and double effect steam driven vapour absorption machines (100-1400 TR)

1996

Technical collaboration with Kawasaki, Japan for efficient fuel driven vapour absorption machines (30-1100 TR)

2008

Exclusive agreement with Trane (Ingersoll rand, USA) for selling Thermax VAMs in the USA and Canada markets.

1984

Agreement with Sanyo, Japan for selling Sanyo VAMs

1989

Technical license agreement for manufacturing single and double effect steam driven vapour absorption machines (100-1400 TR)

1990

In house development of special tubes for heat exchangers

1994

Developed fuel driven vapour absorption machines (100-1000 TR)

1995

Launched Hot Water series (100-650 TR)

1996

Technical collaboration with Kawasaki, Japan for efficient fuel driven vapour absorption machines (30-1100 TR)

1998

Developed efficient split evaporator design

2000

Developed Ammonia-water vapour absorption machines (Temperature down to –20ºC)
Launched small capacity Hot Water driven VAMs (20-80 TR)
Commissioned a large heat pump (capacity of 10 MW) at Thisted, Denmark

2003

Developed high efficiency B4K series with 1.35 COP for steam and fuel driven VAMs
Developed crystallization free design through online concentration measurement and control

2004

Developed double absorber VAMs with 1.46 COP
Developed half-effect machine working at 70-60ºC hot water temperatures
Launched exhaust/multi-energy driven Trigenie series which won the 1st prize in the prestigious Bry Air Award – 2006, in Most Innovative Product Design category
Developed single-double effect vapour absorption machines

2005

Launched Zero Deg LiBr VAMs with brine in chilled water circuit which won the 1st prize in the prestigious Bry Air Award – 2006, in Most Innovative Product Design category
Tested first GAX ammonia VAMs which improved the COP from 0.6 to 0.7
Launched twin type hot water driven VAMs
Developed special tubes for exhaust driven VAMs

2007

Launched new series of high-efficiency single-effect VAMs

2008

China manufacturing facility innagurated and commercial production started
A 3150 TR exhaust-driven machine was factory-tested in Thermax's test bay

2009

Built 'The World's Largest Test Facility for Absorption Chillers' which can test chillers up to 3500 TR capacity
Developed & Tested 3200 TR Exhaust gas fired chiller

2010

Developed High efficiency Simultaneous chiller-Heater

2011

Launched first of its kind 'Triple Effect Absorption Chillers'

2012

Launched the improved Twin type hot water chillers

2013

Launched the improved Double Effect Series

2014

Launched & commissioned its first Heat transformer (also known as Type II Heat Pump).
Launched Air cooled Heat Exchangers, Closed Loop cooling towers and Evaporative condensers.

2015

Commercialized 1.5 COP Steam & Direct Fired Absorption Chillers

2016 Thermax's Ultra low pressure vapour driven chiller wins CII National Award 2016 for the 'Most Innovative Energy Saving Product'.
2016 Thermax's High Efficiency Chiller-Heater wins first prize at ACREX 2016 awards in the 'Energy Saving Category'
2015 Thermax's Triple Effect Vapour Absorption Chiller wins at the Parivartan Sustainability Leadership Awards in the category for 'Innovations in alternate technologies and Applications for enabling cooling in Commercial as well as Industrial buildings.' The awards are instituted by Sustainability Outlook to acknowledge innovation and leadership in resource conservation within the industry
2015 Thermax’s Triple Effect Vapour Absorption Chiller was awarded at the ACREX 2015 awards in the ‘Energy Efficiency Category’.
2015 Thermax grabs an award of excellence in Product Design category for its vapour absorption chiller delivering water at 1oC at the 10th edition of Bry-Air Awards.
2011 Thermax Multi Effect Solar Absorption Chiller bags the runner up prize for ‘Most Innovative Product Design Category in HVAC' in Bry-Air Awards.
2010 Thermax High COP Exhaust Driven Vapour Absorption Chiller wins a prize for ‘Most Innovative Product Design Category in HVAC' in Bry-Air Awards.
2007 Thermax Zero Degree machine awarded First prize in ‘Most Innovative Product Design Category in HVAC' in Bry-Air Awards.

2006

Thermax exhaust and multi-energy driven Machine (Trigenie) was awarded first prize in ‘Most Innovative Product Design Category in HVAC' in Bry-Air Awards.

2000

Thermax low temperature hot water driven machine (Cogenie) awarded as the ‘Environment Product of the Year', UK.

Products

Also see

Thermax's Chinese chiller plant on BBC World News May 2015