an innovative solution to a passenger car cabin
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An innovative solution to a passenger car cabin cooling
A concept study
AMITH VISHWANATH, AKSHAY V RAO, NAGARJUNA N, ANAND RAVI
7th SEM TCE, BNMIT, Bangalore
Motivation• Discomfort in handling hot
car parts while handling• Vehicle battery begins to
degrade• The inside of the vehicle will
not be safe to sit in until it is cooled down by outside air or air conditioning, which will slowdown the vehicle
• Car cabin electronics could be affected
• Food or drink in the car loses its freshness
• Plastic water bottles in the vehicle will be heated up and release dangerous chemicals to the stored water
A conventional solution• A hot cabin can be cooled by convection• Generally, a driver tends to open all windows of the
car for some time after moving the car. During this movement, fresh air comes in to expel the hot air trapped
• This concept is simple. It can be made into a simple mechanism by adding few vent fans which continue to be operational when the car is parked and all windows closed.
• We can modify the car cabin air cooling system to keep car fans running when the car is parked. This option might look simple, but drains off the car battery soon and might result in starting problem if battery drains too much.
• Radiated heat ?? • Car refrigeration system is a solution which required
engines to be ON when parked!!! operational.• Green energy, economy and innovation???
How a car cooling system works
• Heat pump• Condenser• Compressor• Expansion valve • Thermodynamics• Blower • Thermal insulation…..….….
Lets look differently as electronics students
Thermo-electric cooling devices• Thermoelectric coolers (TECs), also known as Peltier
coolers, are solid-state heat pumps that utilize the Peltier effect to cool• Passing a current though a TEC transfers heat from
one side to the other.• TECs are constructed using two dissimilar semi-
conductors, one n-type and the other p-type. The two semiconductors are positioned thermally in parallel and joined at one end by a conducting cooling plate • The flow of DC current across the junction of the two
semi-conductors creates a temperature difference. As a result of the temperature difference, Peltier cooling causes heat to be absorbed from the vicinity of the cooling plate, and to move to the other end of the device• Bismuth telluride and their nano structures,
magnesium group 4 compounds etc are used as TEC devices
Advantages of solid state refrigeration• No moving parts and hence
little or no maintenance. • No refrigerants, such as
potentially harmful CFCs.• Enables reduced low-noise
operation of cooling fans, while providing greater cooling power.• Suitable for manufacture in
mass. • Lightweight.• Easy to control by voltage /
current• Quick response.
Implementation in car
Green energy solution
Conclusion & way ahead• A proof of concept study has been made on building
TEC system • The car cabin is getting heated due to the solar
energy. Usage of the solar energy itself to cool the cabin would be a innovative solution. There are two possible ways of implementing the same. Solar films on cars is not a technology challenge • Usage of solar power to obtain electrical energy and
using this energy to run a air conditioning system is well within the reach of current technology .• Use solar energy to produce a cooling effect directly:
This requires extensive work in the field of micro fluidics
References • Datt, Ruddar; Sundharam, K.P.M. (2009). Indian Economy. New Delhi: S. Chand Group. p. 976.
ISBN 978-81-219-0298-4.• M.F. Basar, M. Musa, M.Y. Faizal, N.H.A. Razik “Alternative Way in Reducing Car Cabin
Temperature Using Portable Car Cooling System (Car-Cool) ” International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-3, Issue-3, August 2013
• Shekhar D. Thakre, Prateek D. Malwe, Rupesh L. Raut , Amol A. Gawali “Cooling of A Truck Cabin by Vapour Absorption Refrigeration System Using Engine Exhaust” IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308 Volume: 03 Issue: 05 | May-2014, Available @ http://www.ijret.org 816
• Perrot, Pierre (1998). A to Z of Thermodynamics. Oxford University Press. ISBN 0-19-856552-6. OCLC 123283342 38073404.
• M.H. Salah, T. H. Mitchell, J.R. Wagner and D.M. Dawson. (2009). A Smart Multiple-Loop Automative Cooling System – Model, Control and Experimental Study. IEEE/ASME Transactions on Mechatronics, Vol. 15, Issue 1, pp. 117-124.
• A. Mezrhab, M. Bouzidi (2004). Computation of Thermal Comfort Inside a Passenger Car Compartment. Applied Thermal Engineering, 26 (14-15), 1697-1704.
• Hidrovo, C Goodson KE, 2008, “Active microfludic cooling of itergared circuits, in electrical, optical, thermal interconnections for 3D integrated systems” , J. Meindl and M Bakir, eds, Artech, Boston, PP 293-330
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