Wyniki wyszukiwania dla: LEAN START-UP

• Teaching management skills to software develop- ment teams through the lean start-up methodology

  Publikacja

  • P. Oleksiak

  - Rok 2014

  In order for development teams to understand the impact of software development on value delivery it is important that all team members, including software engineers, possess adequate management skills which not always have been acquired during university education. The lean start-up methodology techniques enable new ventures to test hypothesis, gather customer feed- back and create a minimum viable product. The obtained information...

• Influence of the low ambient temperature on the start-up process of hydraulic pumps

  Publikacja

  • R. Jasiński

  - Rok 2019

  Starting hydraulic pumps in low ambient temperatures may cause: decreased hydraulic-mechanical efficiency, larger vibration of hydraulic installation, faster wear and more frequent damage to the elements of pumps, change of material properties of elements, increase of pressure drop. As a result of pressure drop in the suction pipe, large underpressure may be experienced, causing incomplete filling of pump working chambers with...

• Use of waste heat to improve the conditions of the piston engines start up

  Publikacja

  • Z. Kneba

  - Rok 2012

  Zespoły prądotwórcze z tłokowymi silnikami spalinowymi są obecnie powszechne stosowane jako awaryjne źródła energii elektrycznej albo elektrownie uzupełniające niedobory energii czy stabilizujące częstotliwość. Ich czas rozruchu powinien być krótki - poniżej 5 minut w przypadku dużych mocy. Zużycie silnika, zużycie paliwa i emisji spalin są silnie uzależnione od stanu cieplnego przed rozruchem. Przedstawiono pomiary laboratoryjne...

• RESEARCH OF HYDRAULIC PISTON PUMPS’ START-UP IN LOW AMBIENT TEMPERATURES

  Publikacja

  • R. Jasiński

  - Rok 2017

  Starting hydraulic pumps in low ambient temperatures may cause: decreased hydraulic-mechanical efficiency, larger vibration of hydraulic installation, faster wear and more frequent damage to the elements of pumps, change of material properties of elements, increase of pressure drop. As a result of increase of resistance of cold oil flow in the suction pipe, large underpressure may be experienced, causing incomplete filling of pump...

• Volumetric and torque efficiency of pumps during start-up in low ambient temperatures

  Publikacja

  • R. Jasiński

  - Rok 2021

  The volumetric, torque and total efficiency of hydraulic pumps change during start-up in low ambient temperatures, as well as in thermal shock conditions, un-til they reach the set conditions. The time to reach steady-state conditions de-pends on many parameters: ambient temperature, flow rate, fluid temperature, design of hydraulic units. The author carried out tests of hydraulic pumps in the Hydraulics Laboratory of the Faculty...

• A fast start-up of the organotrophic anammox process inoculated with constructed wetland sediment

  Publikacja

  • X. Yin
  • J. Zhai
  • W. Hu
  • Y. Li
  • M. H. Rahaman
  • J. Mąkinia

  - ECOLOGICAL ENGINEERING - Rok 2019

  Organotrophic anaerobic ammonium oxidation (anammox) bacteria can utilize small volatile fatty acids with nitrate as electron acceptors with less energy consumption and no biomass production. To achieve a faster and stable start-up of organotrophic anammox process, in this study, the growth of organotrophic anammox bacteria seeded from hybrid constructed wetland (CW) sediment under different TOC/TN ratios and different chloramphenicol...

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• Slowly-closing valve behaviour during steam machine accelerated start-up

  Publikacja

  • M. Bryk
  • M. Banaszkiewicz
  • T. Kowalczyk
  • W. Dudda
  • P. Ziółkowski

  - Case Studies in Thermal Engineering - Rok 2022

  The paper discusses the state of stress in a slowly-closing valve during accelerated start-up of a steam turbine. The valve is one of the first components affected by high temperature gradients and is a key element on which the power, efficiency and safety of the steam system depend. The authors calibrated the valve model based on experimental data and then performed extended Thermal-FSI analyses relative to experiment. The issue...

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• A Concept for Safe and Less Expensive Acceleration of a Marine Steam Turbine Start-up

  Publikacja

  • M. Bryk
  • J. Głuch

  - Journal of Marine Science and Application - Rok 2023

  This paper analyses the issue of accelerated start-up of a marine steam turbine, which is an important problem because the start-up of a steam machine involves the combustion of fuel that is not transformed into useful energy. To find novel technologies that offer improvements in this aspect is essential due to restrictions on reducing ship emissions. Thus, the shorter the start-up time, the better for the environment and economy....

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• Air-sparged hydrocyclone (ASH) technology for separation and environmental clean-up

  Publikacja

  • J. Hupka
  • J. D. Miller

  - Rok 2005

  Przedstawiono zastosowanie technologii wykorzystującej napowietrzany reaktor cyklonowy w oczyszczaniu środowiska. W pierwszych opracowaniach reaktora cyklonowego wykorzystano wkłady ze stali porowatej i polietylenu jako kontaktory fazy gazowej z ciekłą. Jako wynik badań nad rozwojem technologii wkłady porowate zostały zastąpione metalowymi siatkami, co wyeliminowało problem zatykania się elementów. Przeprowadzone badania laboratoryjne...

• On Deck Oil Spill Clean-Up Materials – Solution for Engine Rooms

  Publikacja

  • A. Ubowska
  • K. Jowtuch

  - New Trends in Production Engineering - Rok 2018

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