Experimental study of single bed prototype adsorption refrigeration unit using waste heat energy

The prime objective of this paper is to present the details of a thermoelectric waste heat energy recovery system for automobiles, more specifically, the surface heat available in the silencer. The key is to directly convert the surface heat energy from automotive waste heat to electrical energy using a thermoelectric generator, which is then regulated by a DC–DC Cuk converter to charge a battery using maximum power point tracking. Hence, the electrical power stored in the battery can be maximized. Also the other face of the TEG will remain cold. Hence the skin burn out accidents can be avoided. The experimental results demonstrate that the proposed system can work well under different working conditions, and is promising for automotive industry.

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Feasibility Study of Solar Adsorption Technologies for Automobile Air-Conditioning

Solar Energy ◽

10.1115/isec2005-76064 ◽

2005 ◽

Author(s):

M. O. Abdullah ◽

S. L. Leo

Keyword(s):

Feasibility Study ◽

Ozone Depletion ◽

Air Conditioning ◽

Waste Heat ◽

Environmentally Benign ◽

Adsorption System ◽

Adsorption Refrigeration ◽

Adsorption Technology ◽

Cooling Loads ◽

Automobile Air Conditioning

An adsorption system driven by solar heat or waste heat can help to eliminate the use of ozone depletion substances, such as chlorofluorocarbons (CFCs) and hydro-chlorofluorocarbons (HCFCs). In recent years, adsorption system has witnessed an increasing interest in many fields due to the fact that this system is quiet, long lasting, cheap to maintain and environmentally benign. Although adsorption system is not commonly used for automobile air conditioning, adsorption-cooled mini-refrigerators have been marketed for recreational transports (motor homes, boats, etc). Hence, there exists a need for a creative design and innovation to allow adsorption technology to be practical for air conditioning in automobile. The objective of this paper is to present a comprehensive review on the past efforts in the field of solar adsorption refrigeration systems and also the feasibility study of this technology for automobile airconditioning purpose. It is a particularly an attractive application for solar energy because of the near coincidence of peak cooling loads with the available of solar power.

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Powertrain Waste Heat Recovery: A Systems Approach to Maximize Drivetrain Efficiency

ASME 2012 Internal Combustion Engine Division Spring Technical Conference ◽

10.1115/ices2012-81160 ◽

2012 ◽

Cited By ~ 9

Author(s):

Kevin Laboe ◽

Marcello Canova

Keyword(s):

Fuel Consumption ◽

Waste Heat Recovery ◽

Systems Approach ◽

Waste Heat ◽

Combustion Engine ◽

Heat Energy ◽

Engine Oils ◽

Engine Cooling ◽

Light Duty ◽

Light Duty Vehicles

Up to 65% of the energy produced in an internal combustion engine is dissipated to the engine cooling circuit and exhaust gases [1]. Therefore, recovering a portion of this heat energy is a highly effective solution to improve engine and drivetrain efficiency and to reduce CO2 emissions, with existing vehicle and powertrain technologies [2,3]. This paper details a practical approach to the utilization of powertrain waste heat for light vehicle engines to reduce fuel consumption. The “Systems Approach” as described in this paper recovers useful energy from what would otherwise be heat energy wasted into the environment, and effectively distributes this energy to the transmission and engine oils thus reducing the oil viscosities. The focus is on how to effectively distribute the available powertrain heat energy to optimize drivetrain efficiency for light duty vehicles, minimizing fuel consumption during various drive cycles. To accomplish this, it is necessary to identify the available powertrain heat energy during any drive cycle and cold start conditions, and to distribute this energy in such a way to maximize the overall efficiency of the drivetrain.

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