Abstract
In recent years, biomass fuelled engines have gathered major interest due to rapid depletion and rising price of conventional fuels. Biomass gasification has a better conversion efficiency compared to other conversion techniques. Also, Producer gas can be used directly in diesel engines without any modifications. In this study, the performance parameters of a variable compression ratio CI engine fuelled with diesel-producer gas combination derived from rice husk, coconut shell, and rubber shell have been experimentally and theoretically investigated. During experimentation, brake thermal efficiency (BTE), brake specific fuel consumption (BSFC), brake specific energy consumption and biomass consumption (BMC) are obtained by varying compression ratio and brake power (BP). A new theoretical model based on the finite-time thermodynamics is developed and validated with experimental results. The experimental results show that rubber shell powered DF engine showed the maximum diesel savings of 48%. It is also observed that, among the three selected feedstock, the rubber shell-based dual fuel engine had the highest BTE of 19.80% followed by the coconut shell and rice husk as 19.44% and 19.13%, respectively. Similarly lowest BMC of 3.53 kg/h was observed for rubber shell driven engine. In addition, the rubber shell derived producer gas had a lower BSFC of 0.64 kg/kWh on dual fuel mode than rice husk and coconut shell. It is also predicted that the optimum BTE and diesel savings as 19.18% and 48% are obtained at the compression ratio and BP of 18 and 2.56 kW, respectively.
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Abbreviations
- VCR:
-
Variable compression ratio
- CR:
-
Compression ratio
- CI:
-
Compression ignition
- PG:
-
Producer gas
- IC:
-
Internal combustion
- SI:
-
Spark ignition
- BTE:
-
Brake thermal efficiency
- BSFC:
-
Brake specific fuel consumption
- BSEC:
-
Brake specific energy consumption
- BMC:
-
Biomass consumption
- BP:
-
Brake power
- FTT:
-
Finite time thermodynamics
- FC:
-
Fuel consumption
- DS:
-
Diesel savings
- HC:
-
Hydro carbon
- CO:
-
Carbon monoxide
- NO:
-
Nitrous oxide
- CV:
-
Calorific value of fuel
- 3D:
-
Three dimensional
- CFD:
-
Computational fluid dynamics
- AAC:
-
Available area under cultivation
- AY:
-
Average yield
- RPR:
-
Residue to product ratio
- GRP:
-
Gross residue potential
- BTDC:
-
Before top dead centre
- HP:
-
Horse power
- PT:
-
Platinum resistance thermometer
- SEC:
-
Specific energy consumption
- BM:
-
Biomass
- CR:
-
Compression ratio
- d, D :
-
Diameter, m
- C :
-
Specific heat, kJ/kg
- m :
-
Mass flow rate, kg/s
- Q :
-
Heat, kJ
- N :
-
Speed, rpm
- V :
-
Voltage
- I :
-
Current
- H :
-
Calorific value of fuel
- q :
-
Error or uncertainty
- E :
-
Engine capacity, kW
- L :
-
Load, kW
- B :
-
Blend percentage of PG, %
- X :
-
Regression coefficients
- P :
-
Effective power, kW
- T :
-
Temperature, K
- Z :
-
Friction constant, kPa
- V :
-
Volume, m3
- d:
-
Diesel
- pg:
-
Producer gas
- t:
-
Total
- st:
-
Stoichiometric
- t:
-
Total
- f:
-
Fuel
- e:
-
Electrical
- th:
-
Thermal
- ef:
-
Effective
- m, n:
-
Carbon and hydrogen%
- p:
-
Pressure
- v:
-
Volume
- in:
-
Input
- out:
-
Output
- a:
-
Air
- l:
-
Loss
- Φ:
-
Equivalence ratio
- :
-
Efficiency
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AJP: Investigation, Data curation, Software, Methodology, Formal analysis, Validation. ME: Supervision, Investigation, Methodology, Resources, Conceptualization, Formal analysis, Writing—review and editing.
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Percy, A.J., Edwin, M. Prediction on the Performance Parameters of a Variable Compression Ratio (VCR) Dual Fuel Diesel-Producer Gas CI Engine: An Experimental and Theoretical Approach. Arab J Sci Eng 48, 11559–11576 (2023). https://doi.org/10.1007/s13369-022-07514-w
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DOI: https://doi.org/10.1007/s13369-022-07514-w