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Slowsteaming Saves Stena USD 9 Million

first_imgPress Release, September 12, 2014 zoom Inview of the prospects on the freight market and anticipated future fuel prices, Stena Bulk is focusing even more on maximising the relationship between freight and bunker fuel. The fleet will continue to operate at low speed in the foreseeable future and great importance is attached to the development and adaptation of technology. As a result of efficiency-enhancing measures and reduced speed, Stena Bulk’s fleet has saved more than SEK 65 million ( USD 9.11m) during the last 12 months, the company said in a release.”The cost of bunker oil accounts today for more than 60% of the freight cost, which means that operating vessels as energy -efficiently as possible is an obvious solution.In the case of a modern 160,000 dwt Suezmax tanker, the freight rate must average USD 40,000 per day over time to justify a speed increase of 0.5 knots compared with the present fuel price level. In other words, the freight rate must be doubled before even a small speed increase can be justified based on market conditions so far in 2014,” said Erik Hånell, President & CEO of Stena Bulk. Adjusting a vessel’s propeller and bulb to its actual speed can make a big difference when it comes to reducing fuel consumption. Adding stern tubes and fins are other types of solutions that can have a positive impact on a vessel’s performance.“The vessels’ technical design is a key factor, but how vessels are operated in terms of energy management is just as important. When it comes to the design and operational excellence of its latest vessels, Stena Bulk has been successful in both these areas,” said Hånell.The traditional energy efficiency and reduced bunker fuel consumption have been combined with increased efficiency from a more commercial and operational perspective. The relationship between freight and bunker fuel has thus been maximised.The higher efficiency is mainly due to the vessels spending more of their time sailing at optimum speed, which is defined as being the most efficient speed for each individual vessel and voyage during the current fuel and freight market conditions.This has been achieved primarily by means of an energy budget for each vessel and voyage, which in turn has made it possible to monitor performance more efficiently and in greater detail together with ship optimisation and increased awareness on board.last_img read more

Vaping impacts blood vessels even without nicotine

(Reuters Health) – Healthy young people show signs of impaired blood vessel function after just a few puffs of an electronic cigarette, even without nicotine, new research shows.“We essentially found that using e-cigarettes is not equivalent to inhaling water vapor; in fact, it can exert acute, detrimental effects on (blood vessels) even when the liquid does not contain nicotine,” Dr. Alessandra Caporale of the University of Pennsylvania Perelman School of Medicine in Philadelphia, the study’s first author, told Reuters Health in an email.Evidence is mounting that vaping, sometimes touted as a safer alternative to smoking, is not risk-free, Dr. Caporale and her colleagues note in Radiology. In a previous study, they found that vaping nicotine-free e-cigarettes increased signs of inflammation and a form of tissue damage known as oxidative stress, which returned to normal levels in one to three hours.Big U.S. tobacco companies are all developing e-cigarettes. The battery-powered devices feature a glowing tip and a heating element that turns liquid nicotine and flavorings into a cloud of vapor that users inhale.In the new study, the authors used magnetic resonance imaging (MRI) to take several measurements of blood vessel function in 31 healthy adults who had never smoked, before and after they took 16 three-second puffs of an e-cigarette containing propylene glycol, glycerol and flavoring but no nicotine.Story continues belowThis advertisement has not loaded yet,but your article continues below.After vaping, study participants showed several changes indicating that “vascular reactivity,” which is the ability of healthy blood vessels to widen when necessary, was “considerably and significantly impaired,” Dr. Caporale noted.These changes were temporary, but if repeated over a long period of time could cause inflammation and deterioration of blood vessel health, the researcher added. “We are far from suggesting that a single episode of vaping translates immediately into atherosclerosis.”With funding from the National Heart, Lung, and Blood Institute, which also supported the current research, Dr. Caporale and her team are planning a study that will look at inflammation, oxidative stress and circulatory changes in e-cigarette users, cigarette smokers and non-smokers over time.Dr. Irfan Rahman, a professor at the University of Rochester Medical Center who researches the effect of e-cigarettes on health, reviewed the study for Reuters Health. “The study is interesting and has some insights into long-term consequences of electronic cigarette vapors in cardioneurovascular disorders,” he told Reuters Health in a telephone interview.But the findings don’t confirm an association and shouldn’t be interpreted to mean that e-cigarette users will develop these health problems, he added.SOURCE: Radiology, online August 20, 2019. read more