Prediction of Waste Heat Energy Recovery Performance in a Naturally Aspirated Engine Using Artificial Neural Network

Abstract

The waste heat from exhaust gases represents a significant amount of thermal energy, which has conventionally been used for combined heating and power applications. This paper explores the performance of a naturally aspirated spark ignition engine equipped with waste heat recovery mechanism (WHRM). The experimental and simulation test results suggest that the concept is thermodynamically feasible and could significantly enhance the system performance depending on the load applied to the engine. The simulation method is created using an artificial neural network (ANN) which predicts the power produced from the WHRM.

Study on waste heat recovery from exhaust gas spark ignition (S.I.) engine using steam turbine mechanism

“…For low grade waste heat, the Organic Rankine Cycle is the favourite choice to recover waste heat energy [3], whereas high grade heat, several techniques of recover the energy are applied such as thermoelectric generator [4], turbocharger [5], turbo-compound [6], Rankine cycle system [7], heat pipe [8], air conditioning [8], heat exchanger for thermal energy storage [9], and heat exchanger for fuel conservation, emission reduction [10], and power turbine of waste heat recovery mechanism [11]. The approaches either by theoretical, simulation or experimental works it leads to improve the brake fuel consumption that generated better overall efficiency.…”

“…This is because the potential to produce output power and improve BSFC and efficiency are promising. To improve the performance of turbocharger, several studies [5,11] used electrical motor assisted or Integrated Starter Generator (ISG) to turbocharger or to parallel hybrid power system on a diesel engine [11]. The aim of this method is to improve the fuel economy of diesel Homogeneous Charge Compression Ignition (HCCI), and the results are the fuel economy, the soot emission and NOx emission are improved by 10.9%, 6% and 12.1% respectively [11].…”

“…To improve the performance of turbocharger, several studies [5,11] used electrical motor assisted or Integrated Starter Generator (ISG) to turbocharger or to parallel hybrid power system on a diesel engine [11]. The aim of this method is to improve the fuel economy of diesel Homogeneous Charge Compression Ignition (HCCI), and the results are the fuel economy, the soot emission and NOx emission are improved by 10.9%, 6% and 12.1% respectively [11]. The electrical motor assisted turbocharger is the integration of a high-speed 7.5 kW electric motor-generator within a standard turbocharger of a heavy-duty vehicle, which the purpose of this system is to improve the fuel economy and turbo-lag.…”

Prediction on Power Produced from Power Turbine as a Waste Heat Recovery Mechanism on Naturally Aspirated Spark Ignition Engine Using Artificial Neural Network

“…The recent technologies on waste heat recovery of ICE consist of low grade heat from cooling system and high grade heat from exhaust system. For low grade waste heat, the organic Rankine cycle is the favourite choice to recover waste energy [3], whereas for high grade heat several techniques to recover the energy can be applied such as the thermoelectric generators [4,5], the turbochargers [6][7][8], the turbocompounds [9][10][11][12], the Rankine cycle system [13,14], the heat pipe [15], the air conditioning [16], the emission reduction [17], and the power turbine of waste heat recovery mechanism [18]. The approaches lead to theoretical, simulation, or experimental works that may improve the brake specific fuel consumption (BSFC) that means better overall efficiency.…”