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Dergiler / Teknik Dergi / 2019 / Cilt: 30 - Sayı: 4

Roughness Coefficient of a Highly Calcinated Penstock

Kutay ÇELEBİOĞLU
Sayfa
9309–9325
Yayın Tarihi
2019-07-01
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

It is found that a surface roughness value (ε) of 0.3mm can be used for calcinated surfaces which is much higher than steel surfaces but smaller than concrete.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:When highly calcinated water is transferred through the penstock of a hydropower plant it leaves a residue on the pipe surface.
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Temel Bulgular & Veri:Accumulated residue over time causes a change in the roughness of the pipe surface thus friction losses in the system.
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Sonuç & Katkı:It is found that a surface roughness value (ε) of 0.3mm can be used for calcinated surfaces which is much higher than steel surfaces but smaller than concrete.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Friction factor · Surface roughness · Calcination

Özet

When highly calcinated water is transferred through the penstock of a hydropower plant it leaves a residue on the pipe surface. Accumulated residue over time causes a change in the roughness of the pipe surface thus friction losses in the system. The effect is a change in head and discharge relation for the turbines. A multimethodology is proposed for determining the apparent surface roughness value (ε) by means of friction factor f and measuring arithmetic mean deviation of the roughness profile (Ra), root mean square roughness (Rq) and peak and valley roughness (Rz). It is found that a surface roughness value (ε) of 0.3mm can be used for calcinated surfaces which is much higher than steel surfaces but smaller than concrete.

Abstract

When highly calcinated water is transferred through the penstock of a hydropower plant it leaves a residue on the pipe surface. Accumulated residue over time causes a change in the roughness of the pipe surface thus friction losses in the system. The effect is a change in head and discharge relation for the turbines. A multimethodology is proposed for determining the apparent surface roughness value (ε) by means of friction factor f and measuring arithmetic mean deviation of the roughness profile (Ra), root mean square roughness (Rq) and peak and valley roughness (Rz). It is found that a surface roughness value (ε) of 0.3mm can be used for calcinated surfaces which is much higher than steel surfaces but smaller than concrete.

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Bu Makaleye Atıf Yap

ÇELEBİOĞLU, K. (2019). Roughness Coefficient of a Highly Calcinated Penstock. Teknik Dergi, Cilt: 30 - Sayı: 4, 9309–9325. https://ajindex.com/articles/51241

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Kaynakça (13)

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