Search for dissertations about: "energy saving device"

Showing result 1 - 5 of 19 swedish dissertations containing the words energy saving device.

2. 1. A Ventilation Strategy Based on Confluent Jets : An Experimental and Numerical Study

   Author : Setareh Janbakhsh; Bahram Moshfegh; Alexander Zhivov; Linköpings universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multiple interacting jets; round jets; confluent jets; wall jet; ventilation strategy; air distribution system; air supply device; ventilation performance; thermal comfort; energy-saving potential; measurement; numerical predictions; RANS turbulence models; renormalization group RNG k– ε ; realizable Re k– ε ; and shear stress transport SST k– ω ;

   Abstract : This study presents air distribution systems that are based on confluent jets; this system can be of interest for the establishment of indoor environments, to fulfill the goals of indoor climate and energy-efficient usage. The main objective of this study is to provide deeper understanding of the flow field development of a supply device that is designed based on wall confluent jets and to investigate the ventilation performance by experimental and numerical methods. READ MORE

4. 2. Improving the Energy Efficiency of Cellular IoT Device

   Author : Muhammad Tahir Abbas; Karl-Johan Grinnemo; Johan Eklund; Mohammad Rajiullah; Stefan Alfredsson; Peter Sjödin; Karlstads universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CIoT; 3GPP; energy saving; mMTC; NB-IoT; LTE-M; EC-GSM- IoT; Computer Science; Datavetenskap;

   Abstract : Cellular Internet of Things (CIoT) has emerged as a promising technology to support applications that generate infrequent data. One requirement on these applications, often battery-powered devices, is low energy consumption to enable extended battery life. READ MORE

5. 3. Quality of Experience on Smartphones : Network, Application, and Energy Perspectives

   Author : Selim Ickin; Blekinge Tekniska Högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; QoE; QoS; Energy; Mobile computing;

   Abstract : Smartphones have become crucial enablers for users to exploit online services such as learning, leisure, communicating, and socializing. The user-perceived quality of applications and services is an important factor to consider, in order to achieve lean resource management, to prevent user churn and revenue depletion of service or network providers. READ MORE

6. 4. Energy Saving vs. Performance: Trade-offs in Optical Networks

   Author : Pawel Wiatr; Paolo Monti; Josep Solé-Pareta; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy-efficiency; optical networks; RWA; side-effects; device reliability performance; network performance; operational cost; benefits; loss; Informations- och kommunikationsteknik; Information and Communication Technology;

   Abstract : The energy consumption of communication networks is continuously growing. Many energy saving approaches have been proposed at the device, system, and network level. The most promising way to address this problem is to utilize photonic technologies as much as possible thanks to their low energy consumption per bit performance. READ MORE

7. 5. System Design for Opportunistic Networks

   Author : Sylvia T. Kouyoumdjieva; Gunnar Karlsson; Andrea Passarella; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; opportunistic communication; system design; mobility; energy-saving mechanisms; device-to-device communication; mobile data offloading; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Device-to-device communication has been suggested as a complement to traditional cellular networks as a means of offloading cellular traffic. In this thesis we explore a solution for device-to-device communication based on opportunistic content distribution in a content-centric network. READ MORE