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Experimental studies of latent heat storage based solar air heater for space heating: A comparative analysis

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Erişim

info:eu-repo/semantics/closedAccess

Tarih

2023

Yazar

Saxena, Abhishe
Cüce, Erdem
Singh, Desh Bandhu
Sethi, Muneesh
Cüce, Pınar Mert
Sagade, Atul A.
Kumar, Avnish

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Künye

Sexena, A., Cüce, E., Singh, D.B., Sethi, M., Cüce, P.M., Sagade, A.A. & Kumar, A. (2023). Experimental studies of latent heat storage based solar air heater for space heating: A comparative analysis. Journal of Building Engineering, 69, 106282. https://doi.org/10.1016/j.jobe.2023.106282

Özet

There are numerous applications of solar energy technology, among which an air heating system is commonly used for space heating, wood seasoning, industrial drying, etc. Previous research focuses on the bulk usage of different latent heat storages, which is a costly method for performance improvement, especially for solar heating systems. Another major problem with bulk energy storage is that it takes a long time to be charged completely, which results in low-rate air heating at the start. The present research focuses on an economical solution for solar air heating, especially under India's mild cold climatic conditions. About 36 tiny cylindrical containers have been used to carry the two low-cost phase change materials (PCMs), i.e., coconut oil and paraffin wax. These materials have been filled inside the small containers and placed over the solar absorbers of modified models of air heaters, namely, SAHS-2 (with coconut oil) and SAHS-3 (with paraffin). A total of 02 configurations have been developed to conduct the air heating trials on natural and forced convection. To the best of the author's knowledge, likely methodology has not been applied to any air heating system to improve performance for extended hours, especially in a cold climate. Results have been compared with the same size conventional solar heater (SAHS-1) and some other relevant designs of SAHS to observe the significance of PCMs and their appropriateness for air heating. Finally, the model SAHS-3 is found to be the best-configured air heater, capable of performing efficiently under mild cold climates. Experimental studies showed that the best model provides enhanced heat transfer of about 372.81 W/m2 K, thermal efficiency of about 75.9%, a heat loss coefficient of about 4.93 W/m2 K, and outlet air temperature of about 44.07 degrees C under forced convective operations. The estimated cost of the modified heater is approximately $61, while its payback period is about 4.38 years.

Kaynak

Journal of Building Engineering

Cilt

69

Bağlantı

https://doi.org/10.1016/j.jobe.2023.106282
https://hdl.handle.net/11436/8162

Koleksiyonlar

  • Makine Mühendisliği Bölümü Koleksiyonu [329]
  • Mimarlık Bölümü Koleksiyonu [82]
  • Scopus İndeksli Yayınlar Koleksiyonu [5931]
  • WoS İndeksli Yayınlar Koleksiyonu [5260]



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