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Performance Assessment of a Multi-Generation System Based on Organic Rankine Cycle

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Abstract

In this paper, a new multi-generation system is proposed and analyzed through energy and exergy. The new system uses solar power as its energy source and delivers six beneficial productions for the residential sector, such as hotels. These outputs include hot water, electricity, heating, cooling, dry air, and hydrogen production. The effects of some factors such as the inlet and outlet temperature of turbine and ambient temperature on the performances of the system are evaluated. The results show that the energetic COP of the absorption chiller cycle is found to be 60%, whereas the exergetic COP of the absorption system is found to be about 10%. Also, energetic and exergetic efficiency of the organic Rankine cycle is determined to be 8 and 27%, respectively. Moreover, overall energetic and exergetic efficiency of the system is found to be 70 and 53%, respectively.

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Abbreviations

\(\dot{EX}\) :

Exergy rate (kW)

Ex:

Specific exergy (kJ/kg)

h :

Specific enthalpy (kJ/kg)

\(\dot{m}\) :

Mass flow rate (kg/s)

P :

Pressure (kPa)

Tb:

Turbine

EG:

Electricity generator

S :

Specific entropy (kJ/kg-K)

t :

Temperature (K)

V :

Specific volume (m3/kg)

abs:

Absorber

Evap:

Evaporator

EV:

Expansion valve

TV:

Throttle valve

SG:

Steam generator

El:

Electrolyzer

LiBr:

Lithium bromide

1, 2,…,32:

State numbers

d :

Destruction

G :

Generator

P i :

Pump i

P ii :

Pump ii

C i :

Condenser i

C ii :

Condenser ii

HEX i:

Heat exchanger i

HEX ii:

Heat exchanger ii

\(\eta\) :

Energy efficiency

Ψ:

Exergy efficiency

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Authors and Affiliations

  1. Department of Mechanical Engineering, Faculty of Science and Engineering, Université Laval, Québec, QC, G1V 0A6, Canada

    Moslem Sharifishourabi

  2. Department of Mechanical Engineering, Faculty of Engineering, Eastern Mediterranean University, Magusa, Mersin 10, Turkey

    Moslem Sharifishourabi, Hamed Alimoradiyan & Ehsan Sadeghizadeh

  3. Shaheed Zulfikar Ali Bhutto Institute of Science and Technology, Clifton Campus, Karachi, Sindh, Pakistan

    Tahir Abdul Hussain Ratlamwala

Authors
  1. Moslem Sharifishourabi
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  2. Tahir Abdul Hussain Ratlamwala
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  3. Hamed Alimoradiyan
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  4. Ehsan Sadeghizadeh
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Correspondence to Moslem Sharifishourabi.

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Sharifishourabi, M., Ratlamwala, T.A.H., Alimoradiyan, H. et al. Performance Assessment of a Multi-Generation System Based on Organic Rankine Cycle. Iran J Sci Technol Trans Mech Eng 41, 225–232 (2017). https://doi.org/10.1007/s40997-016-0057-x

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  • DOI: https://doi.org/10.1007/s40997-016-0057-x

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