1987 Cilt 2 Sayı 1

Permanent URI for this collectionhttps://hdl.handle.net/11452/31882

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Buhar sıkıştırmalı ısı pompasına etki eden parametrelerin incelenmesi
(Uludağ Üniversitesi, 1987) Yamankaradeniz, Recep; Mühendislik Fakültesi; Makine Mühendislik Bölümü
In this study, the cycle calculations and the determination of the coefficient of performance for the vapour compression heat pump are explained. The variation of the coefficient of performance according to changes in the condenser and evaporator temperatures, calculat by a computer program are given. The effect of superheating and subcooling on the coefficient of performance is explained by curues. Concepts of heat pump efficiency and primary energy rate are given and the factors affecting them are examined.
Çamcağız kaolininin (İvrindi - Balıkesir) jeolojisi ve teknolojik özellikleri
(Uludağ Üniversitesi, 1987) Erdinç, Hayri; Mühendislik Fakültesi; İnşaat Bölümü
In this study, the Palaeozoic (Pre-Permian, Permian) and Cenozoic (Tertiary, Quaternary) rocks and the kaolin deposit in the location of Çamcağız around Küçük Yenice village of lurindi town in Balıkesir have been investigated. The kaolin deposit of Çamcağız was derived from the alteration of the pyroclastic rocks of Tertiary age by hydrothermal solutions. DTA, X-ray diffractometer and electron microscope analysis of the specimens collected from the pit have confirmed that kaolinite was the chief clay mineral and alunite, quartz and iron oxide minerals were the impurities. The Kaolin reserve of Çamcağız aero has been estimated about 1.273.200 tons (visible + probably) and is currently being used essentially in the ceramic industry. Studies also show that the above mentioned row material can be used in paper pulp which serves as a filling substance. In contrast, kaolin in the Çakmak area contains iron oxide and alunite in higher degrees and therefore can not be used in the ceramic industry without purificotion.
Endüstride radyoizotoplar
(Uludağ Üniversitesi, 1987) Dinçer, Salih; Mühendislik Fakültesi
In this paper there is a brief discussion of radioactive decay processes, the nature some of the nuclear radiations and a few measurement techniques used in industry.
Fiziksel beyazlatıcı maddeler
(Uludağ Üniversitesi, 1987) İskender, Abdülhalik; Erdoğan, Bahar; Mühendislik Fakültesi
In this article optical whiteners, physical whitening agents are examined. Examples for nucleating agents and optical whiteners are given. Physical whitening agents are examined in two groups as blueing materials and fluorescent brighteners. Their regions in the spectrum are given. On the other hand fluorescent brighteners are classified as anionic, cationic and diapers and also they are explained. Asa result the criteria for selecting a brightener are given.
Bir kaymalı yatağın elasto hidrodinamik incelenmesinde sonlu farklara dayanan bilgisayar programı
(Uludağ Üniversitesi, 1987) Dinç, Saim; Güllü, Emin; Kopmaz, Osman; Mühendislik Fakültesi; Makine Bölümü
In this study performance characteristics of journal bearings are investigated, including the shaft deformation. To determine the pressure distribution and oil film thickness Reynolds' differential equation is solved with Reynolds type of boundary conditions while constitutive equations, usable for linear elastic materials, are utilized to determine the deformations. When shaft deformation is considered together with linear deformotion, bearing performance is observed to be in negligibly important. Therefore it can be concluded that elasticities of bearing materials must be taken into account during design.
Kurşun-antimuan alaşımlarının hızlı katılaştırma ile üretimi ve pb-asit akümülatörlerine uygulanması açısından önemi
(Uludağ Üniversitesi, 1987) Demirci, A. Halim; Akçal, Ümit; Mühendislik Fakültesi
In der gegenwartigen Technologie werden die Schnell-Erstarrungsverfahren zur Erzielung besserer Werkstoffeigenschaften in zunehmendem Masse herangezogen. Als ein Anwendungsbeispiel dieser Verfahren wurde hiermit versucht, anhand einer Reihe von Pb-Sn-Legierungen den Einfluss der Abkühlgeschwindigkeit auf ihre Eigenschaftanderungen zu ermitteln, sowie die Bedeutung erzielter Untersuchungsergebnissen bezüglich der Anwend Wendbarkeit an Pb-Akkumulatoren zu zeigen.
Nükleer fisyon
(Uludağ Üniversitesi, 1987) Dinçer, Salih; Mühendislik Fakültesi
Fission reaction is a special type of a nuclear reaction in which a large nucleus split into two medium-mass nuclear fragments and additional two are three neutrons, but also a large amount of energy is emitted. A special type of fission in which a heavy nucleus such as U2 3 5 absorbs a slow neutron and breaks into two equal-size fragments in each such fission 200 Me V of energy is released. In a nuclear reactor the number of fissions per unit time is controlled and the liberated nuclear energy is used to make steam to drive turbines and generate electrical power. If the reaction is uncontrolled the number of fissions will increase geometrically, resulting in all the energy of the source being released over a short time interval, producing a nuclear bomb. In this article the theory of the fission reaction mentioned above is described.
Uranyum dioksidin termodinamik özelikleri
(Uludağ Üniversitesi, 1987) Kırbıyık, Mehmet; Mühendislik Fakültesi
In this study, thermodynamic properties and equations of state concerning solid, liquid and liquid vapor phase of uranium dioxide were given in empirical and analytical formulas. Menzles' critical point estimates of 2000 bars, 800 K and 0.33258 cm3/g were used. Moreover, the relations of the speed of sound were derived in 8ingle and two-phase domains for adiabatic process.

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