Vapour absorption cooling system for cars

In summary, the conversation discusses the potential of using a vapor absorption compression system to provide cooling for automobiles by utilizing the exhaust gases. The efficiency of this method is questioned and it is suggested that it could be more efficient for A/C functioning rather than engine functioning. The differences between the Indian and American systems are also mentioned. It is suggested that further research should be done to determine the potential savings of using this system.
  • #1
s@ikiran
12
1
Is to possible to provide cooling for automobiles using vapor absorption compression system utilizing the exhaust gases? If possible how efficient can this method work?
 
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  • #2
s@ikiran said:
cooling
A/C? Or, engine?
 
  • #3
Bystander said:
A/C? Or, engine?
It is for A/C functioning.
 
  • #4
s@ikiran said:
utilizing the exhaust gases?
India, and Indian equivalent of EPA is not familiar to me; in the
USA you'll lose more than the "waste heat" is worth in heat exchangers that "isolate" it from the passenger compartment.
 
  • #5
Since the normal AC primarily uses shaft power and an absorption system would use the waste exhaust heat, I would think there would be a savings. It's worth looking into in some more detail...
 

1. How does a vapour absorption cooling system work in a car?

In a vapour absorption cooling system, the refrigerant used is ammonia, which has a high boiling point. This refrigerant is mixed with a weak solution of water and lithium bromide in an absorber. The heat from the car's engine is used to heat this mixture, causing the ammonia to evaporate and separate from the water. The ammonia gas then flows to a condenser, where it is cooled and converted back into a liquid. This liquid is then pumped into an evaporator, where it absorbs heat from the inside of the car, cooling the air. The now warm water-lithium bromide solution is then pumped back to the absorber to repeat the cycle.

2. What are the advantages of using a vapour absorption cooling system in cars?

One of the main advantages of a vapour absorption cooling system is that it does not require a compressor, which is a major component in traditional vapour compression cooling systems. This means that the system is less complex and has fewer moving parts, making it more reliable and requiring less maintenance. Additionally, the use of ammonia as a refrigerant is more environmentally friendly compared to other refrigerants such as CFCs or HFCs.

3. Are there any drawbacks to using a vapour absorption cooling system in cars?

One potential drawback of a vapour absorption cooling system is that it requires a heat source to function. In most cases, this heat is provided by the car's engine, which means that the system only works when the car is running. This may not be ideal for situations where the car is parked for extended periods. Additionally, the system may not be as efficient as traditional vapour compression systems, which could result in higher fuel consumption.

4. Can a vapour absorption cooling system be retrofitted into existing cars?

Yes, a vapour absorption cooling system can be retrofitted into existing cars. However, it may not be a simple process and may require modifications to the car's engine and cooling system. It is recommended to consult with a professional mechanic or engineer before attempting to retrofit a vapour absorption cooling system into a car.

5. Are there any safety concerns with using ammonia as a refrigerant in a car's cooling system?

While ammonia is generally considered safe to use as a refrigerant, it is important to handle it with caution. Ammonia is toxic and can be harmful if inhaled or ingested. It is essential to follow proper safety protocols when handling and servicing a vapour absorption cooling system in a car. Additionally, in the event of a leak, ammonia gas can be dangerous, so it is crucial to address any leaks immediately.

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