Design and Development of Innovative Protracted-Finned Counter Flow Heat Exchanger (PFCHE) for an Engine WHR and Its Impact on Exhaust Emissions

Ravi, Rajesh; Pachamuthu, Senthilkumar

doi:10.3390/en11102717

Cited by 29 publications

(7 citation statements)

References 30 publications

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“…The demand for petroleum product and efficiency in energy conversion devices is increasing because of the increase in industrialization and modernization of the world. 1,2,11,12,[40][41][42]46 The excessive use of fossil-derived fuels such as gasoline in spark ignition (SI) engines has been proven to have a negative effect on our environment, which affects our social well-being. 13,14 The concern on the increasing air pollution and climate change as a result of exhaust gas emissions has mandated the search for environmentally friendly fuel.…”

Section: Introductionmentioning

confidence: 99%

“…The demand for petroleum product and efficiency in energy conversion devices is increasing because of the increase in industrialization and modernization of the world. ,,,,− , The excessive use of fossil-derived fuels such as gasoline in spark ignition (SI) engines has been proven to have a negative effect on our environment, which affects our social well-being. , The concern on the increasing air pollution and climate change as a result of exhaust gas emissions has mandated the search for environmentally friendly fuel. ,− Also, considering the energy crises and pollution problems today, the use of gasoline and alcohol fuels blend as an alternative fuel in a gasoline engine is becoming necessary. − The oxygenate fuels sometimes come in the form of an additive and are being introduced into the main gasoline usually in percentage. ,, The use of fuel additives is being introduced to fuel because some additives improve the engine performance and reduce emissions such as smoke, CO, HC, NOx, SO 2 , and solid particles . Oxygenated fuel is used to improve fuel properties, combustion quality, and octane rating in an SI engine. ,,− The oxygenated fuels commonly used are ethanol, methanol, butanol, propanol, etc .…”

Section: Introductionmentioning

confidence: 99%

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Effects of Propanol and Camphor Blended with Gasoline Fuel on the Performance and Emissions of a Spark Ignition Engine

et al. 2020

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In this research, the performance and emissions of a four-stroke spark ignition engine fuelled with varying proportion of propanol-camphor and gasoline blends were investigated. The physicochemical properties such as specific gravity, viscosity, fire point, flash point, and iodine value (I.V.) of the blends were determined, and the values obtained conform to the ASTM standard. Sample P0B (100% of pure gasoline and 5 g of camphor) had the best physicochemical property values higher than those of the least sample of P15B by the following percentages: specific gravity (0.5%), viscosity (30.8%), fire point (5.08%), flash point (21.8%), and I.V. sample (0.5%). Also, the engine performance parameters such as brake power, brake thermal efficiency, brake mean effective pressure (BMEP), and specific fuel consumption were generated from the engine-measured parameters. Sample P0B has the best specific fuel consumption for the torque of 3 N m with a value of 22.77 kg/kW h, and sample P0A (100% of pure gasoline) has the best fuel consumption for a torque of 6 N m with a value of 12.52 kg/kW h. For brake thermal efficiency, sample P0B gives the best brake thermal efficiency at the two constant torques with a value of 0.36 for torque 3 N m and 0.67 for torque 6 N m. Sample P15C (85% of gasoline, 15% of propanol, and 5 g of camphor) gives the best BMEP at torque 3 N m with a value of 1.92 bar, and sample P5C (95% of gasoline, 5% of propanol, and 10 g of camphor) gives the best BMEP at 6 N m with a value of 3.85 bar. Exhaust emissions were analyzed for unburned hydrocarbon (HC), carbon monoxide (CO), carbon dioxide (CO 2 ), and nitrogen oxide (NOx). The results showed that increasing the blending percentage reduces the emitted concentration of CO, HC, and NOx. Carbon monoxide emission was found to be lowest at sample P10A (90% of gasoline and 10% of propanol) for torque 3 N m with a value of 0.16, and at torque 6 N m, the sample with the lowest percentage was P15C with a percentage of 0.21.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Propanol and Camphor Blended with Gasoline Fuel on the Performance and Emissions of a Spark Ignition Engine

et al. 2020

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“…Heat transfer and pressure drop are directly proportional to the length of the tube. As the length of the tube increases, more surface area is available to transfer heat compromising high-pressure drop [37]. Therefore, to predict the overall effect of tube length on the heat pump cycle, curves are plotted for EER and COP at various tube lengths as shown in Figure 15a,b and Figure 16.…”

Section: Effect Of Tube Lengthmentioning

confidence: 99%

Seasonal Performance Investigation for Residential Heat Pump System with Different Outdoor Heat Exchanger Designs

Ishaque

Kim

2019

Energies

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A finned tube heat exchanger is a key component used as a condenser or an evaporator in residential air-conditioning (AC) and heat pump systems. The overall cycle performance of these systems is significantly affected by the heat exchanger’s geometric design. This study investigates outdoor heat exchanger designs with varying geometric parameters such as the fin pitch, number of tube rows, and tube length, and their effect on system performance based on seasonal energy efficiency ratio (SEER) and seasonal coefficient of performance (SCOP). Air face velocity profiles for each operating condition along the outdoor heat exchangers are determined using CFD, with subsequent cycle simulations for 10 different operating conditions. Results have been validated with the available experimental data. The number of tube rows, fin pitch, and length of tube have been varied from 2–10, 1.4–2.5 mm, and 800–2800 mm respectively. The numerical results reveals that SEER increases 3.21% while SCOP increases 5.32% up to fourth and fifth tube row respectively and remain unaffected thereafter. Similarly, SEER increases by 3.55% as the tube length is increased from 800–1800 mm, while it increases only 0.67% for 1800–2800 mm and the maximum variation of 4.32% has been found for SCOP. Moreover, increasing the fin pitch reduces SEER and SCOP (except for fin pitch from 1.4 to 1.8 mm). Finally, the performance of the system with four different fin configurations have also been investigated and it has been found that slit fins are more effective.

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“…A study conducted on heavy‐duty engines has shown that ~200 s is the usual time taken by the SCR catalyst to reach LOT 28 . Various studies 29,30 have been carried out to improve the catalyst's LOT through thermal management and developing new catalysts. Another factor that drastically reduces the exhaust temperature is the position of the SCR unit in the exhaust system.…”

Section: Introductionmentioning

confidence: 99%

“…27 A study conducted on heavy-duty engines has shown that ~200 s is the usual time taken by the SCR catalyst to reach LOT. 28 Various studies 29,30 have been carried out to improve the catalyst's LOT through thermal management and developing new catalysts.…”

mentioning

confidence: 99%

Experimental investigation to enhance the low‐temperature nitrogen oxide emission reduction in biodiesel exhaust using selective catalytic reduction with direct ammonia injection and manganese cerium zirconia catalyst

Joseph

Pachamuthu

Solomon

et al. 2021

Env Prog and Sustain Energy

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Selective catalytic reduction (SCR) employs AdBlue, a reducing agent over a catalytic surface to reduce the oxides of nitrogen (NO x ) emission in diesel engines. SCR's inherent problem is its poor cold start performance at exhaust temperatures below 150 C. In the current work, the researcher has discussed the investigation of two techniques to enhance low-temperature NO x conversion and combined them to achieve the best results. First, AdBlue injection was replaced by gaseous ammonia injection. The gaseous ammonia was generated by heating solid ammonia precursor materials such as solid urea and ammonium carbonate. Second, to improve the catalytic performance, MnCeZrO x catalysts were introduced instead of conventional CuZ catalysts. MnCeZrO x were prepared in the laboratory using its component materials.The prepared catalyst was tested through SEM and EDAX analysis. The newly developed SCR system was tested and compared with a conventional Adblue-CuZ SCR.The results revealed with diesel fuel at exhaust temperatures below 150 C the ammonia-MnCeZrO x SCR system gave a 90% increase in NO x reduction compared to the conventional system. With biodiesel blend jatropha B20 the conversion was greater than 80% from 100 to 150 C. A maximum NO x conversion of 95% was obtained for diesel and 93% for jatropha Biodiesel blend B20.

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Design and Development of Innovative Protracted-Finned Counter Flow Heat Exchanger (PFCHE) for an Engine WHR and Its Impact on Exhaust Emissions

Cited by 29 publications

References 30 publications

Effects of Propanol and Camphor Blended with Gasoline Fuel on the Performance and Emissions of a Spark Ignition Engine

Effects of Propanol and Camphor Blended with Gasoline Fuel on the Performance and Emissions of a Spark Ignition Engine

Seasonal Performance Investigation for Residential Heat Pump System with Different Outdoor Heat Exchanger Designs

Experimental investigation to enhance the low‐temperature nitrogen oxide emission reduction in biodiesel exhaust using selective catalytic reduction with direct ammonia injection and manganese cerium zirconia catalyst

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