SavedAdd your journal

Journals / International Journal of Thermodynamics / 2022 / Cilt: 25 - Sayı: 3

Entropic Assessment of Sleeping Comfort

Mustafa ÖZİLGEN
Deniz KAYALI
Bayram YILMAZ
Yavuz YAVUZ
Pages
64–73
Publication Date
2022-09-01
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results showed that entropy export became more difficult as the body temperature approached the room temperature.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In the literature longevity and comfort are evaluated in terms of entropy generation and export rates.
📊
Key Findings & Data:Effect of bedding, pajamas and levels of body coverage have been assessed in 270 cases by referring to body weight and height of 25 years old women.
💡
Conclusion & Impact:The results showed that entropy export became more difficult as the body temperature approached the room temperature.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Sleeping preferences · metabolic heat generation · entropy generation

Abstract

In the literature longevity and comfort are evaluated in terms of entropy generation and export rates. When people cannot export entropy, they experience discomfort. Effect of bedding, pajamas and levels of body coverage have been assessed in 270 cases by referring to body weight and height of 25 years old women. By 160 cm tall and 50 kg women, at 0 °C of room temperature, entropy export rates were 6.0x10--3 and 7.4x10--3 W/kg K, while they were sleeping on their back and on the side, respectively. The results showed that entropy export became more difficult as the body temperature approached the room temperature. Textile properties, including heat transfer and wicking rates of sweat removal were also important while exporting the entropy. The results of this study may be employed while designing beds or beddings, pajamas and comforters to achieve a more comfortable sleeping environment.

🔖

Cite This Article

ÖZİLGEN, M., KAYALI, D., YILMAZ, B., YAVUZ, Y. (2022). Entropic Assessment of Sleeping Comfort. International Journal of Thermodynamics, Cilt: 25 - Sayı: 3, 64–73. https://ajindex.com/articles/673369

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (14)

  1. D. I. Rifkin, M.W. Long, M.J. Perry. “Climate change and sleep: A systematic review of the literature and conceptual framework.” Sleep Med Rev, 42,3–9, 2018; https://doi.10.1016/j.smrv.2018.07.007.
  2. C. Yildiz, V.A. Bilgin, B Yilmaz, M. Özilgen, M. “Organisms live at far-from-equilibrium with their surroundings while maintaining homeostasis, importing exergy and exporting entropy.” Int. J. Exergy, 31 (3), 287-300, 2020; https://doi.10.1504/ijex.2020.10027921.
  3. S.S. Gilbert, C.J. van den Heuvel, S.A. Ferguson, D. Dawson, “Thermoregulation as a sleep signalling system,” Sleep Med. Rev., 8(2), 81–93, 2004; https://doi.10.1016/S1087-0792(03)00023-6.
  4. O. Troynikov, G.C. Watson, N. Nawaz. “Sleep environments and sleep physiology: A review.” J. Therm. Biol., 78(2),192–203,2018; https://doi.10.1016/j.jtherbio.2018.09.012.
  5. G. Zoccoli, R. Amici, R. “Sleep and autonomic nervous system.” Curr. Opin. Physiol., 15, 128–133, 2020; https://doi.10.1016/j.cophys.2020.01.002.
  6. J.L. Hylden, F. Anton, R.L. Nahin, “Spinal lamina I projection neurons in the rat: collateral innervation of parabrachial area and thalamus.” Neuroscience, 28(1) 27-37, 1989; https://doi.10.1016/0306-4522(89)90229-7.
  7. A.D. Craig, A.D., M.C. Bushnell, E.T. Zhang, A. Blomqvist. “A thalamic nucleus specific for pain and temperature sensation.” Nature, 372(6508), 770-773, 1994; https://doi.org/10.1038/372770a0.
  8. L.C. Tan, Z.A. Knight, Z.A. “Regulation of body temperature by the nervous system.” Neuron, 98(1), 31–48, 2019; https://doi.10.1016/j.neuron.2018.02.022.
  9. A.S. Tubbs, H. K. Dollish, F Fernandez, M.A. Grandner, “The basics of sleep physiology and behavior.” Elsevier, 2019,
  10. USA. S. Tekin, Y. Erden, S. Sandal, E. Etem Onalan, F. Ozyalin, H. Ozen, B. Yilmaz. “Effects of apelin on reproductive functions: relationship with feeding behavior and energy metabolism.” Arch Physiol Biochem, 123: 9-15, 2017.
  11. L.M. Kay, S.M. Sherman. “An argument for an olfactory thalamus.” Trends Neurosci. 30(2). 47-53, 407; https://doi.10.1016/j.tins.2006.11.007.
  12. J. Hall, M. Hall, M. “Guyton and Hall Textbook of Medical Physiology”. 14th Ed., Elsevier, USA, 2020. R. Szymusiak. Body temperature and sleep. Handb Clin Neurol. 156:341-351, 2018.
  13. I. Kuş, B. Yılmaz, B, H. Öner, M. Ögetürk, H. Keleştimur. “Ultrastructural examination of the mutual interrelationship between the pineal gland and the testis in the male rat.” Arch Androl, 45(2), 119-124, 2000; https://doi.10.1080/014850100418819.
  14. L.C. Lack, M. Gradisar, E.J.W. van Someren, H.R. W