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Journal of Thermal Analysis and Calorimetry

, Volume 136, Issue 4, pp 1847–1860 | Cite as

Thermal performance improvement of kerosene cook-stoves by heat reuse and radiant heat shielding

  • Howard O. NjokuEmail author
  • Ikenna N. Agbo
  • Izuchukwu P. Agwuna
  • Darlington I. Egeonu
  • Felix U. Asuquo
  • Emmanuel I. Arji
Article
  • 68 Downloads

Abstract

Improvements in the thermal performances of kerosene cook-stoves, which have been modified by the incorporation of radiant heat shields and a heat reuse pot, were assessed in this study. Eight test configurations, comprising different combinations of shielded/unshielded cook-stoves, conventional pots and a heat reuse pot, were experimentally assessed. The experiments followed a procedure adapted from water boiling test (WBT) protocol, which included cold-start, hot-start and simmering test phases. Using the temperatures, boiling times, and water and fuel masses obtained from the tests, the firepowers, specific fuel consumptions and thermal efficiencies of the cook-stoves were determined for the eight configurations. When processes in the conventional pot alone were considered, the greatest improvement in the efficiency \(\eta _{\mathrm{conv}}\) was obtained when radiation shields were applied to both inner and outer casings of the cook-stove (Setup V) and was up to 1.7 times the efficiency of the unmodified cook-stove setup. When processes in both conventional and heat reuse pots were considered, however, the greatest improvement in the efficiency \(\eta _{\mathrm{conv+HRP}}\) was up to 3.6 times the efficiency of the unmodified setup, and was obtained when radiation shields were applied to both inner and outer casings of the cook-stove in addition to incorporating the heat reuse pot (Setup VI). These results are indicative of the immense quantities of heat lost by radiation from kerosene cook-stove walls and by the steam vented from convention cooking pots. It has also been shown that significant improvements in kerosene cook-stove performances could be achieved by the simple measures proposed and at low cost.

Keywords

Kerosene cook-stoves Waste heat reuse Radiation shielding Water boiling test Cook-stove’s performance Energy efficiency 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Howard O. Njoku
    • 1
    Email author
  • Ikenna N. Agbo
    • 1
  • Izuchukwu P. Agwuna
    • 1
  • Darlington I. Egeonu
    • 2
    • 3
  • Felix U. Asuquo
    • 1
  • Emmanuel I. Arji
    • 1
  1. 1.Applied Renewable and Sustainable Energy Research Group, Department of Mechanical EngineeringUniversity of NigeriaNsukkaNigeria
  2. 2.Department of Mechanical EngineeringUniversity of NigeriaNsukkaNigeria
  3. 3.Department of Industrial EngineeringWayne State UniversityMichiganUSA

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