Industrial Energy Efficiency Optimisation Through Cogeneration Using Biomass

Combined heat and power (CHP) is considered one of the most appropriate and promising technologies for the improvement of industrial energy efficiency. This study is a feasibility analysis of the application of various cogeneration systems using biofuel (rice husk) based on Rankine, Brayton and Combined cycles for a medium-sized paper mill in Pakistan, to assess the potential for energy savings in this sector through improved energy efficiency. Thermodynamic and economic analysis are carried out to suggest the most appropriate option for the studied industrial unit. It was found that cogeneration based on the Brayton cycle is the most feasible option for the studied mill based on technical and economic perspectives, as it has the highest energy utilisation factor (EUF) and lowest annualised life cycle cost compared to the other proposed options. The overall saving of the proposed CHP system based on Brayton cycle is calculated at 2,515,216 USD annually. Keeping in view the energy crises in Pakistan, using energy efficient cogeneration systems and bio-fuel (rice husk) in the industrial sector, a significant amount of energy can be conserved, resulting in the reduction of GHGs and helping to achieve sustainability and a cleaner environment.

[1]  Zhiqiang Zhai,et al.  Performance comparison of combined cooling heating and power system in different operation modes , 2011 .

[2]  Shahzad Memon,et al.  Analysis of Non-Technical Electrical Power Losses and their economic Impact on Pakistan , 2017 .

[3]  S. C. Kamate,et al.  Exergy analysis of cogeneration power plants in sugar industries , 2009 .

[4]  Zacharias B. Maroulis,et al.  Design of a combined heating, cooling and power system: Sizing, operation strategy selection and parametric analysis , 2010 .

[5]  Muhammad Asif.  Energy Crisis in Pakistan: Origins, Challenges, and Sustainable Solutions , 2013 .

[6]  M. A. Uqaili,et al.  A Review of Energy and Power Planning and Policies of Pakistan , 2017 .

[7]  Christos A. Frangopoulos,et al.  Thermo-economic functional analysis and optimization , 1987 .

[8]  Siaw Kiang Chou,et al.  A thermoeconomic analysis of biomass energy for trigeneration , 2010 .

[9]  Muhammad Tahir Hassan,et al.  Barriers to Industrial Energy Efficiency Improvement – Manufacturing SMEs of Pakistan , 2017 .

[10]  J. H. Horlock,et al.  Cogeneration--Combined Heat and Power (Chp): Thermodynamics and Economics , 1987 .

[11]  F. Carl Knopf.  Modeling, Analysis and Optimization of Process and Energy Systems , 2011 .

[12]  Yongliang Li,et al.  Cryogen based energy storage : process modelling and optimisation , 2011 .

[13]  Muhammad Nasir,et al.  The Cost of Unserved Energy: Evidence from Selected Industrial Cities of Pakistan , 2008 .

[14]  Zubi Ghassan,et al.  Study on the state of play of energy efficiency of heat and electricity production technologies , 2012 .

[15]  P. A. Pilavachi,et al.  Power generation with gas turbine systems and combined heat and power , 2000 .

[16]  Andrea Lazzaretto,et al.  Direct Calculation of Average and Marginal Costs From the Productive Structure of an Energy System , 1995 .

[17]  J. R. San Cristóbal,et al.  Investment criteria for the selection of cogeneration plants¿a state of the art review , 2006 .

[18]  S. Rehman,et al.  National energy scenario of Pakistan - Current status, future alternatives, and institutional infrastructure: An overview , 2017 .

[19]  Ernest E. Ludwig,et al.  Applied Process Design for Chemical and Petrochemical Plants , 1977 .

[20]  S. Jayaraj,et al.  Feasibility study of cogeneration in a plywood industry with power export to grid , 2009 .