Sökning: "enclosure design"

Visar resultat 1 - 5 av 65 uppsatser innehållade orden enclosure design.

  1. 1. Design Investigation of Passive Radiators in Loudspeakers

    Master-uppsats, Lunds universitet/Innovation

    Författare :Fabrice Dufberg; Valter Hamberger; [2024]
    Nyckelord :passive radiator; loudspeaker; speaker tuning; Thiele Small parameters; frequency response; Technology and Engineering;

    Sammanfattning : Passive radiators are components that can be integrated into loudspeakers to amplify the bass frequencies. To ensure good sound quality, the passive radiator, the speaker driver, and the loudspeaker enclosure must all be well-dimensioned and fine-tuned in relation to each other. LÄS MER

  3. 2. Helande trädgård i sjukhusmiljö : exemplet Karolinska sjukhuset i Solna

    Kandidat-uppsats, SLU/Dept. of Urban and Rural Development

    Författare :Nabila Al Tallaj; [2023]
    Nyckelord :designrekommendationer för helande trädgårdar; helande trädgård; Karolinska sjukhuset; sjukhuspark;

    Sammanfattning : De positiva effekterna på hälsan av att vistas i naturen är något som varit känt i många decennier och som idag är fastställt. Numera börjar vi förstå vikten av helande trädgårdar och hälsodesign, ett forskningsområde som får allt större uppmärksamhet. LÄS MER

  4. 3. Development and Analysis of a Gaseous Hydrogen-Oxygen Rotating Detonation Combustor

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Birgir Steinn Hermannsson; [2022]
    Nyckelord :;

    Sammanfattning : Theory suggests that more efficient rocket propulsion can possibly be achievedby utilizing a pressure-gain detonative combustion process instead of conventional deflagration combustion. To demonstrate this, rotating detonation engines that sustain one or several detonation waves in an annular enclosure havebeen a subject of research for decades. LÄS MER

  5. 4. IMPROVED SUB SYSYEM ENCLOSURE

    Magister-uppsats, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :EMMANUEL PETER; ALAN SHAJI; [2022]
    Nyckelord :Prefabricated Enclosure Wall Panel Systems PEWPS ; Modern Methods of Construction MMC ; Panelized systems; Prefabricated panels; Stainless steel 316; Lean; Nonconformities;

    Sammanfattning : Building envelopes are perhaps the most influencing players on assuring indoor comfort conditions, in alliance with their impact on the sustainability and energy-efficiency of the building during operation. However, given the multitude of commercial solutions available on the market and the use of different criteria and inconsistent semantics among the existing categorization/classification systems of construction objects, there is still a need for uniformization of the many regarding the main Prefabricated Enclosure Wall Panel Systems (PEWPS) for building applications. LÄS MER

  7. 5. Conductive interferences from multiple EC-motor installation : To measure and mitigate harmonics

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Signaler och system

    Författare :Victor Aitman; [2022]
    Nyckelord :harmonics; interharmonics; harmonic-mitigation; electromagnetic compability; EMC; övertoner; EC-motorer; störningar; övertonsreducering; elektromagnetiskt kompabilitet; EMC;

    Sammanfattning : Products produced by a Swedish company are requested to be investigated regarding their harmonic and inter-harmonic currents injected into the public supply system to comply with the Swedish standard SS-EN IEC 61000-3-2, Electromagnetic compatibility (EMC).    On behalf of Systemair Sweden AB, this bachelor thesis aims firstly to investigate if their product, PAFEC 4225 WH (Air Curtain), complies with standard SS-EN IEC 61000-3-2, and if not, what measures should be taken; and secondly to develop a low-cost instrument for the measurement of harmonics and inter-harmonics according to standard IEC 61000-4-7 related to the requirements on equipment used in standard SS-EN IEC 61000-3-2. LÄS MER