How does an absorber chiller work

The diluted solution is pumped to the high-temperature generator where it is heated and re-concentrated to a medium concentration solution by the exhaust heat from the reciprocating engine exhaust gas. The intermediate solution from the high-temperature generator flows to the low-temperature generator where it is heated to become a concentrated solution by the high temperature water vapour released from the solution in the high temperature generator.

Since the low-temperature generator acts as the condenser for the high-temperature generator, the heat energy applied in the high-temperature generator is used again in the low-temperature generator.

Vapour released in the shell side of the low-temperature generator enters the condenser to be cooled and returned to a liquid state. The refrigerant water then returns to the evaporator to begin a new cycle. To remove the heat from the Chiller, cooling water from a cooling tower is firstly circulated through the tubes of the absorber to remove the heat of vaporization.

How does an Absorption Chiller Work? Double Effect hot water driven absorption chiller. Direct fired absorption chiller. The cooling tower water also condenses the residual vapour particles back into a liquid. The mixture of lithium bromide and water collect at the bottom ready to be pumped back to the generator again to repeat the cycle. I think your pump direction is backwards on the chilled water look. While you explanation was good, it look me a long to time reconcile how this worked and how the system was delivering cooling.

Please send me an email and let me know if I am thinking about this correctly. Save my name, email, and website in this browser for the next time I comment. The Engineering Mindset. Absorption chiller how it works. Lithium Bromide attracts water vapour.

How Absorption Chiller Works. How Absorption Chiller Works Animation. Industrial Heat Exchangers. Capacitor Basic Calculations. Thermostatic Radiator Traps. Can you help me translate? The explanation was great and in detail. Thanks a lot. Mahdi from Iran. Please enter your comment! Please enter your name here. You have entered an incorrect email address! Support more content. While the products were first produced commercially in , it was only in the 60s that serious production started due to rising demand for caravan refrigerators.

The legendary contributions of these men are still in visible today —they are playing a crucial role in district cooling systems—. Recently, research and development in absorption cooling technology has increased due to higher interest in decentralized energy systems and the ever-tightening energy efficiency regulations. Absorption chillers have proven to be ideal replacements for compressor chillers in places where power is unreliable, unavailable or costly, where waste heat is available, or where restrictions on noise deem compressor chillers useless.

Comparing the chillers with compression chillers may give more insight into how do absorption chillers work. Every chiller relies on some external force to transfer heat to a high temperature medium from a low temperature one. For instance, electric chillers have compressors.

Absorption chillers replace the compressor with steam, hot water or any other external heat source. An absorption chiller has a very straightforward operation. Its operation is fundamentally similar to what happens in a vapor compression chiller in that both processes involve condensation and evaporation of the refrigerant within the system.

However, while an absorption chiller uses a thermo-chemical process, a conventional chiller relies on mechanical energy. They only difference is how the increase the pressure of the refrigerant from evaporation level to condensation level. Simply put, the absorption chiller does not compress refrigerant vapor ; instead, it dissolves the vapor in an absorbent, and transfers the resulting product to higher-pressure environment using a pump with a very low electricity consumption. Of course, this only a description of the basic absorption cycle —there are more complex cycles that even have extra components—.

Some substances have the peculiar property of having affinity for other substances at certain pressure and temperature conditions , only for this affinity to change if the conditions are altered. Michael Faraday came up with the idea of the absorption chiller based on this concept in The principle behind an absorption process is to separate and recombine to fluids refrigerant and absorbent to create a cooling effect.

In the first cycle, water acts as the absorbent while ammonia water solution acts as the refrigerant. Get a free quote. Share on facebook. Share on linkedin. Share on twitter. Share on reddit. Yujing Lin. She is an avid writer and lover of journalism. Get the Latest Energy News! First Name. Last Name. Company Name. Recent Articles. November 8,