Analysis and Assessment of Tower Solar Collector Driven Trigeneration System

Abdul Khaliq, Mathkar A. Alharthi, Saeed Alqaed, Esmail M.A. Mokheimer, Rajesh Kumar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


This paper describes the development and performance assessment of a tower solar collector driven integrated system operating in trigeneration mode to generate electricity, heating, and cooling, in a carbon-free manner. The proposed system applies a heliostat-based central receiver unit as a base of solar energy input to drive the steam Rankine cycle which is combined with the process heater and the lithium bromide-water operated absorption chiller. An analysis is performed to monitor the behavior of energy and exergy efficiency at various operating conditions of the proposed trigeneration system. The computed results are authenticated with the reported literature. A comparison is made between the present findings and reported results in the form of exergy efficiency, total exergy destroyed, and energy efficiency. Consideration of process heat and cold along with electricity provides a promising increase in energy efficiency from 15.8% to 64.1% while the exergy efficiency is enhanced from 16.9% to 24.4%. Variation in direct normal irradiations from 600 W/m2 to 1000 W/m2 results in the significant rise of energetic and exergetic outcomes of the proposed trigeneration system. Out of 100% solar exergy supplied to the proposed trigeneration, 24% is generated as the exergetic output, 1.6% is lost to ambient, and the remaining 74.4% is the exergy destroyed in the system components.

Original languageEnglish
Article number051003
JournalJournal of Solar Energy Engineering, Transactions of the ASME
Issue number5
StatePublished - 1 Oct 2020

Bibliographical note

Publisher Copyright:
© 2020 American Society of Mechanical Engineers (ASME). All rights reserved.


  • combined cooling heating and power
  • efficiency
  • energy
  • exergy
  • heliostat field
  • lithium bromide-water operated absorption chiller
  • solar
  • steam Rankine cycle

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology


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