An iterative code to investigate heat pump performance improvement by exhaust gases heat recovery

Rabih Murr, Mohamad Ramadan, Mahmoud Khaled, Abdul-Ghani Olabi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The race between the development of technologies and energy demand has drawn the guidelines of energy strategies for the next two decades. Indeed, the governmental organizations as well as the private sectors are spending huge effort to come up with new adequate strategies that allow to decrease energy consumption. Having said that, heat pump becomes an essential system in our daily life not only in residential building but also in hospital, industrial and touristic building. Nonetheless, (HP)s have very high energy consumption rate. Thus, and to be in line with the new trends in energy strategies, it is convenient to find new methods to enhance the performance of heat pump in order to reduce energy consumption. In this frame, the present paper suggests an approach to enhance the performance the heat pumps using the heat recovery from generators. For this purpose, an in-house code is developed allowing to simulate two new proposed systems (condenser upstream exhaust gases heat recovery system (CU-EGHRS) and condenser downstream exhaust gases heat recovery system (CD-EGHRS). It has been shown that the increase in the performance of the heat pump depends on the capacity of the generator. Also, the CD-EGHRS is shown to be the best. For instance, in the case of a 15 kVA generator, the enhancement could reach 42% for the CD-EGHRS. This enhancement increases to 5640% in the case of a 180 kVA generator.
Original languageEnglish
Pages (from-to)2207-2218
Number of pages12
JournalEnergy Sources, Part A: Recovery, Utilization, and Environmental Effects
Issue number18
Early online date11 Jan 2019
Publication statusPublished - 17 Sept 2019


  • Heat Recovery
  • Heat pump
  • Generators
  • Renewable energy
  • Waste energy


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