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Physicochemical Aspects of Ecological Heat-transfer Fluids
Skolil, Jan ; Kráčmar, Stanislav (referee) ; Vávrová, Milada (referee) ; Čorňák, Štefan (referee) ; Čáslavský, Josef (advisor)
This thesis develops composition of heat transfer fluids with antifreeze properties next to traditional one component glycols produced from propene and ethene. Based on assessment of physical properties it considers application of progressive antifreeze compounds of glycerine and propan-1,3-diole and their mixtures with classic glycols, which do not have negative influence on the environment and which are produced in last years from renewable sources. Due to the necessity of selection of certain compromise between their heat transfer properties, price, solubility and other factors physical properties of selected mixtures are determined together with synergy of each compound, including formulas with glycols: ethan 1,2 diol and propan 1,2 diol Another evaluated factor of studied formulations in addition to their heat transfer properties was anticorrosive protection of common corrosion inhibitors mixtures. The result of whole work is the proposal of several most perspective formulations based on mixtures of polyhydric alcohols in terms of their features enabling them heat transfer, reasonable costs, and the restrictions of impact of their use, particularly in heat transfer systems, to human health and the environment. The knowledge of physical properties of water solutions of polyhydric alcohols mixtures also helps to better using of recycled materials from planning recycling plant for glycols.
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Physicochemical Aspects of Ecological Heat-transfer Fluids
Skolil, Jan ; Kráčmar, Stanislav (referee) ; Vávrová, Milada (referee) ; Čorňák, Štefan (referee) ; Čáslavský, Josef (advisor)
This thesis develops composition of heat transfer fluids with antifreeze properties next to traditional one component glycols produced from propene and ethene. Based on assessment of physical properties it considers application of progressive antifreeze compounds of glycerine and propan-1,3-diole and their mixtures with classic glycols, which do not have negative influence on the environment and which are produced in last years from renewable sources. Due to the necessity of selection of certain compromise between their heat transfer properties, price, solubility and other factors physical properties of selected mixtures are determined together with synergy of each compound, including formulas with glycols: ethan 1,2 diol and propan 1,2 diol Another evaluated factor of studied formulations in addition to their heat transfer properties was anticorrosive protection of common corrosion inhibitors mixtures. The result of whole work is the proposal of several most perspective formulations based on mixtures of polyhydric alcohols in terms of their features enabling them heat transfer, reasonable costs, and the restrictions of impact of their use, particularly in heat transfer systems, to human health and the environment. The knowledge of physical properties of water solutions of polyhydric alcohols mixtures also helps to better using of recycled materials from planning recycling plant for glycols.
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Business plan of the company Oleochem, a.s.(result of the restructuralisation of the company Setuza a.s.)
Zábranský, Petr ; Vojík, Vladimír (advisor) ; Vácha, Vilém (referee)
The subject of graduation theses is the facture of the enterpreneurial plan of succesor company Oleochem a.s. First part is engaged in the enterpreneurial plan in theoretical line and in the process of company's restructuralisation. The practical part of graduation theses creates the historical review of the development of company SETUZA a.s. including the process of its restructuralisation. The last part of work consists of chapters, which are engaged in organization structure, products, competitive environment, production, the purchase of raw materials, quality and financial plan. At the close of graduation theses are introduced the strong and weak spots, the risks and the opportunities of enterpreneurial plan.
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