Essays about: "elevated temperature."

Showing result 1 - 5 of 76 essays containing the words elevated temperature..

  1. 1. Tribological Performance of Polymer Based Self-lubricating Coatings

    University essay from Luleå tekniska universitet/Maskinelement

    Author : Amit Roy; [2019]
    Keywords : polyimide coatings; carbon nanotube; graphene; tribological properties; elevated temperature.;

    Abstract : The thesis comprises the two parts in each chapter: the first part focuses on the development and characterization of polyimide (PI) based composite coatings on a steel substrate. In order to improve the tribological performance of polyimide coatings, the fillers i.e. READ MORE

  2. 2. Experimental validation of a periodic heat transfer CFD model of a vertical shell and tube heat exchanger

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Patrik Bengtsson; Dilip Kumar Vellore Saikumar; [2019]
    Keywords : ;

    Abstract : Flow obstructions are used as a passive design element in heat exchangers to enhance heattransfer. Further, a change in flow structure can also have a positive effect on the heat transfer. Avertical shell and tube heat exchanger, used to recover heat in the greywater stream, isinvestigated in this study. READ MORE

  3. 3. Climate change effects on the sub-Saharan agriculture- a case study in Kenya on maize growth and adaptation options

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Alessia Signorelli; [2019]
    Keywords : physical geography; sub-saharan africa; agriculture; maize; climate change; Earth and Environmental Sciences;

    Abstract : Climate change is progressively advancing, and is affecting the entire globe, with some areas more vulnerable than others. Among them, the sub-Saharan Africa, with a very low adaptive capacity, mainly relies on one economic sector: agriculture. Due to its high climate-dependency, agriculture is at elevated risk. READ MORE

  4. 4. West Nile virus i Sverige : har risken för spridning ökat efter fynd av Nilfebersmyggan?

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Daniela Larsson; [2019]
    Keywords : West Nile fever; WNV; Culex modestus; häst; människa;

    Abstract : Virus är en vanlig orsak till sjukdomar världen över. West Nile virus sprids med myggor och orsakar sjukdomen West Nile fever hos bland annat människor och hästar. Sjukdomen kan ha allvarliga konsekvenser med neurologiska symtom och ibland dödlig utgång. Viruset upptäcktes ursprungligen i Uganda 1937 men har fått en omfattande spridning. READ MORE

  5. 5. Effect of Beam Scan Length on Microstructure Characteristics of EBM Manufactured Alloy 718

    University essay from KTH/Materialvetenskap

    Author : Bengt Gustavsson; [2018]
    Keywords : EBM; Electron Beam Melting; Alloy718; AM; Additive Manufacturing;

    Abstract : Additive Manufacturing (AM) as a method is on the rise and allow for a high freedom to create unique shapes without being limited by conventional machining methods. The Electron Beam Melting method, developed by Arcam AB in Mölndal, Sweden, use Powder Bed Fusion together with an electron beam and at an elevated temperature (+1000ºC) to lower stress due to thermal gradients. READ MORE