An innovative surface morphology for a solar air heater to augment its performance

N. Madhwesh, K. Vasudeva Karanth, N. Yagnesh Sharma

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


It is generally observed that solar air heater has lower conversion efficiencies due to low density of the working substance i.e. air. Hence many researchers are working hard to improve the performance by various design changes for the absorber itself. However, there is scope for improving the performance by means of surface morphology of the duct such that the flow may be made to accelerate and decelerate in the duct. This will result in a momentum exchange among the heated air particles. In this paper the width-wise dimension is morphed such that the duct takes the shape of a converging as well as a diverging passage. Converging shapes of the absorber plate result in an improved enthalpy augmentation due to an increase in the kinetic energy of the medium. Several parametric configurations of the converging and diverging ducts corresponding to various convergence ratios and divergence ratios are studied under different mass flow rate considerations so as to bring out an optimum design of the morphed duct.

Original languageEnglish
Pages (from-to)1087-1095
Number of pages9
JournalProcedia Manufacturing
Publication statusPublished - 01-01-2019
Event2nd International Conference on Sustainable Materials Processing and Manufacturing, SMPM 2019 - Sun City, South Africa
Duration: 08-03-201910-03-2019

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Artificial Intelligence


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