Sökning: "energy harvesting"

Visar resultat 11 - 15 av 187 avhandlingar innehållade orden energy harvesting.

  1. 11. Materials Modelling for Energy Harvesting : From Conversion to Application through Storage

    Författare :Amitava Banerjee; Rajeev Ahuja; Gunnar Niklasson; Sudip Chakraborty; Tejs Vegge; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Materials Modelling; DFT; Energy Materials; Photocatalysis; HER and OER; Hybrid Perovskite Solar Cells; Stability; Thermodynamics and Kinetics in Na-ion battery; Organic Crystal Battery;

    Sammanfattning : In this Ph.D. thesis, ab initio density functional theory along with molecular dynamics and global optimization methods are used to unveil and understand the structures and properties of energy relevant materials. In this connection, the following applications are considered: i. LÄS MER

  3. 12. Random and Hybrid Medium Access for M2M Communication : Scalability and Energy Analysis

    Författare :Luca Beltramelli; Mikael Gidlund; Patrik Österberg; Aamir Mahmood; Preben Mogensen; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; M2M; LoRa; IEEE 802.1ah; energy; mathematical modeling;

    Sammanfattning : The term machine-to-machine (M2M) communication identifies any fully automated communication between intelligent devices, autonomous from human intervention. M2M communication is a key enabling technology for the Internet of Things (IoT), where it is used to provide ubiquitous connectivity between a large number of intelligent devices. LÄS MER

  4. 13. Robust energy management for IoT machine elements

    Författare :Fredrik Häggström; Jerker Delsing; Jonny Johansson; Saul Rodriguez; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy harvesting; Rolling element bearing; Energy Storage; Industrial Electronics; Industriell elektronik;

    Sammanfattning : Advancements in semiconductor technology have reached the point at which ambient energy in the surrounding environment can power sensors and microprocessors. This capability enables new strategies for energy management, which are necessary to continue the sensorization of our environment. LÄS MER

  5. 14. On-chip electrochemical capacitors and piezoelectric energy harvesters for self-powering sensor nodes

    Författare :Agin Vyas; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy storage; 2DOF; sensor node; Energy harvesting; piezoelectric energy harvesters; graphene oxide; spin coating; MEMS; Microsupercapacitors;

    Sammanfattning : On-chip sensing and communications in the Internet of things platform have benefited from the miniaturization of faster and low power complementary-metal-oxide semiconductor (CMOS) microelectronics. Micro-electromechanical systems technology (MEMS) and development of novel nanomaterials have further improved the performance of sensors and transducers while also demonstrating reduction in size and power consumption. LÄS MER

  7. 15. Novel cycles using carbon dioxide as working fluid : new ways to utilize energy from low-grade heat sources

    Författare :Yang Chen; Per Gunnar Lundqvist; Mats Westermark; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal energy engineering; Termisk energiteknik;

    Sammanfattning : This licentiate thesis proposes and analyzes three carbon dioxide novel cycles, namely: the carbon dioxide transcritical power cycle, the carbon dioxide Brayton cycle and the carbon dioxide cooling and power combined cycle. Due to the different characteristics of each cycle, the three cycles are suitable for different applications. LÄS MER