INVESTIGATION OF PHYSICAL AND MECHANICAL CHARACTERISTICS CHANGE OF PINUS NIGRA AND ITS USE WATER COOLING TOWERS
Öz
The aim of this study is to investigate the effectiveness of Wolmanit-CB and Protim WR230 as wood
preservatives for water cooling towers. Scotch Pine (Pinus nigra) 2x2x30 cm dimensions specimens were
prepared and placed to water return system on water cooling tower and impregned. Duration of exposure to
return water of cooling tower was 9 months. Specimens were tested for bending strenght and compression
strenght parallel to grain.
As a result, there was no rottenness or any odour observed on the specimens terated with preservatives.
However, for the control specimens significant color change, odour and surfacae softenning was observed.
According to the results of compression tests parallel to the grain and bending tests, there was a significant
strenght loss on control specimens.
Anahtar Kelimeler
Kaynakça
- [1] Bozkurt, Y., A., Erdin, N., İğne Yapraklı ve Yapraklı Ağaç Odunlarında Tanım Özellikleri (Odun Anatomisi II), İstanbul Üniversitesi Orman Fakültesi, İ.Ü. Yayın No : 3907, Fen Bilimleri Enstitüsü Yayın No :6, ISBN 975-404-406-6, İstanbul, 220 s , (1995).
- [2] Singh, A.P., Presence of Widespread Bacterial Attacks in Presarvative- treated Cooling tower Timbers, New- Zealand- Journal-Of Forestry- science. 27:1, pp. 79-85, 18 ref., New Zealand. (1997).
- [3] Acker, J., Stevens, M., Laboratory Culturing and decay Testing with Physisporinus Vitreus and Donkiopora Expansa Originating from Identical Cooling Tower Environments Show Major Differences, Document- International- Research – Group on-Wood-Preservation, No. IRG-WP-96-10184, 8 pp.; Paper prepared for the 27th Annual Meeting, 19-24 May, 2 ref, Belgium (1996).
- [4] Eaton, R.A., Bacterial Decay Of ACQ- treated Wood in a Water Cooling Tower, International – Biodeterrioration- and- Biodegradation, 33:3, 197-207; 21ref ., (1994).
- [5] Schlyter, R., The Strenght of Swedish Redwood Timber (pine) and its Dependence on moisture content and Apparent Specifics Gravitiy. Congres International Lessai des Materiaux Amsterdam (1937).
- [6] Irvine, J., The Effect of Water Of Different Ionic Composition on the Leaching of waterborn Preservative from Timber Placed in cooling Towers and in the Sea, Material und- Organismen, pp.45-71,NLL; Jones-EBG (1972).
- [7] Jones, E.B.G., Steward, R.J., Tricladium Varium, an Aquatic Hyphomycete on Wood in Water Cooling Towers,Transactions-of—the-British-Mycological-Society, pp.163-167, England (1972).
- [8] TS 2474 (1976), Odunun Statik Eğilme Dayanımının Tayini, TSE, Ankara [9] TS 2476 (1976), Odunun Liflere Dik Doğrultuda Çekme Gerilmesinin Tayini, TSE, Ankara
Ayrıntılar
Birincil Dil
İngilizce
Konular
Mühendislik
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
15 Aralık 2008
Gönderilme Tarihi
14 Şubat 2008
Kabul Tarihi
12 Kasım 2008
Yayımlandığı Sayı
Yıl 2008 Sayı: 017