Exhaust Gases and Air Conditioning

Yes, Dear------,

You request is very interesting.

I would like to reply point by point.

First thing first: Is there any practical application(vehicle) which uses vapor absorption system (VARS) for air conditioning the automobile.

The answer is strong YES. Many vehicles, specially the large size container carriers which transport material/items, those to stored/transported under refrigerated condition over long distances, do use vapor absorption system (VARS) for air conditioning the automobile driver cabins and the containers volumes.

Few of old luxary cars were using vapor absorption system for air conditioning the car.

Your second question:Is it possible to use store the energy (please give the detail of device)in the Vapor absorption system when there is low output from exhaust gas (at no load condition).

The answer is again strong YES. It is definitely possible to store and use the energy, in the form of thermal storage. One simple medium of storage is non-volatile lubricant oils which can be heated to aprox.180-220 degree cels.in an insulated tank, when the heat supply is in excess and the hot oil will store the heat which can be recovered when there is low output from exhaust gas (at no load condition). To run a Vapor absorption system, temperature range of 130 - 150 is sufficient.

This should satisfy your request,

Regards-Dr N P Singh

Dear Sir,

Thanks for replying me.

I am very greatful to you .

I have these doubt.

Sir, I have one more question that when this this technology is very useful and save engine power then why is it not in to much use like vapor compression .

Sir,

I am just a fresher B.E mechanical and entered in the world of technology.

I am really thankful to you for providing the information.

Please request you to provide your mail id if possible.

I am really please to have a guide from you.

Presently I am working in TCS Mumbai.

Thanks in advance .

Thanks and Regards

Lokesh Jeswani

Dear Lokesh Jeswani

I Dr N P Singh, after having done my PhD in the field of Energy Applications, from Indian Institute of Technology, New Delhi, I am working with Govt. of India company (ONGC as Chief Engr level) for last 23 yrs. I am very keen on energy conservation and promotion of renewable energy in public,so that from the begning our people should be aware about the importance of energy saving and the benefits of renewable energy and availability of energy at almost no cost from solar and other sources.

It is great to know that you are trying to understand why people are not using waste heat recovery for running air condtioners free of any cost.

Keep it up. I am available at npsdhillon@gmail.com

With Best wishes,

Dr N PSingh

Dear Sir,

Thnaks for replying.

I am really thankful to you .

I am really please to have a guide from you.

Thanks for your support.

Thanks and Regards

Lokesh Jeswani.

Dear Sir,

Please request you to tell the specific name of application(company name ,model) like you mention as big transport trucks etc.if possible.

I will be very thankful to you.

Thanks in advance.

Thanks and Regards

Lokesh Jeswani

Dear Lokesh,

Another example for using waste heat recovery: In my house I have recently acquired a Refrigerator having Vapour absorption cycle, which runs on either a small Kerocene lamp or a 400 watt heater element at its bottom for supply of heat.

Dr N P Singh

Dear Sir,

Yes, I have heard of electrolux refrigerator which runs on VARS and is in great use for domestic purpose.

Sir,I have heard that the total installation of VARS in heavy vehicles is less because of the space limitation as the space required by the system is more.

I am still wondering for the same .

Please request you to do let me know your view on the same and please help me if you know about the space limitation for the same.

Please request you to share your view on the same.

Thanks in advance.

Thanks and Regards

Lokesh Jeswani

Yes Dear,

Your question

"I have heard that the total installation of VARS in heavy vehicles is less because of the space limitation as the space required by the system is more"

The answer to your question YES and NO both.

These days car are becomming compact with each new launch of models. So the answer is yes the VAR systems may not be preferred in compact cars.

But as far heavy vehicles and container carriers are concerned there is no space limitation, and additionally when good are to be carried over a long distance under refrigerated condition, for those vehicles VAR systems are specially suitable as the amount of waste heat through exhaust pipe is huge, which is meaningfully utilised.

_ NPSingh

Yes

Dear Sir,

Thanks for replying.

Sir, I am searching for some space parameters for the VARS system.

That is the total space accuried by the whole system.

Please request you to share any information regarding the same , if possible.

Thanks in advance.

Thanks for guiding me.

Thanks a lot.

Thanks and Regards

Lokesh

Dear Sir,

Please request you to tell te details of the domestic refrigetrator which uses VARS cycle if possible.

this will be very helpful for me.

Thanks in advance.

thanks and Regards

Lokesh Jeswani

SIR, is it possible to make feasible project to run car a.c by using exhaust gas,

i am in final year mech engg. and am planning to make the project on the same if feasible.

Yes as data said it looks feasible .

But still I am not sure about the practical application as I havent found a single vehicle which is specifically using this for A.C.

But it is feasible.

Try to make it practical .