Heated absorption refrigerator questions.

[rk90gtx]

Is it possible to use the principles of the heat absorption refrigerator with the heat provided by contact with a automotive exhaust manifold?
My car has turbo motor with a front mount intercooler trying to cool down the 10-14psi of pressurized air. Is it possible to gain additional intake charge cooling via an inline closed heat absorbtion refrigerant system?
Are there ammonia substitutes that might better suit an automotive application?
Would it be more efficient than a good quality automotive air to air intercooler?


Rick

 

[davefitz]

Probably could use a Lithium Bromide-water mixture, but several problems can be foreseen.

a) LiBR-H20 systems operte at very low pressures and imply relatively large volumes- where to hide the beast?

b)Compact LiBr-H20 systems normally take advantage of gravity in separating the consituents, but the varying accelerations the fluid is exposed to in a moving car would play havoc with such separators.

c) Would need to provide a larger than normal heat exhanger to exhaust the total heat to the enviroment- would likely be larger than current radiators.

I think the better auto AC would be to simply compress air, cool it down to (ambient +10F), then pass it over a turbine that exhausts into the passenger space. The nearly isentropic expansion can be fashioned to cool the air to 30F below initial temp. The turbine can have its useful work recovered by powering a DC electric generator.