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Tuesday, June 28, 2022

Hydrogen-powered trains to be used in Germany's capital region

 A Mireo Plus H train photographed in North Rhine-Westphalia, Germany, on May 5, 2022. According to Siemens Mobility, the train can hit a top speed of 160 kilometers per hour, or around 99 mph.

 Siemens Mobility is to build several hydrogen-powered trains for a network in the Berlin-Brandenburg metropolitan region of Germany, in the latest example of how hydrogen-based technology is being used in rail transport.
 
 

In a statement Monday, Siemens Mobility said it had been commissioned by rail operator Niederbarnimer Eisenbahn to provide seven of its Mireo Plus H trains. The two-carriage vehicles will use fuel cells and lithium ion batteries, and are slated to be delivered in the fall of 2024.

Operations on the Heidekrautbahn network are planned to start in Dec. 2024. In addition, the order includes a 10-year service and spare parts contract that runs until 2034.

Siemens Mobility, which is a separately managed company of industrial giant Siemens, said the trains would provide "completely CO2 emission-free mobility" and have a top speed of 160 kilometers per hour (around 99 mph).

 The firm has previously said the Mireo Plus H's range comes in at between 600 and 1,000 kilometers. "By switching from diesel to hydrogen, Heidelberg will reduce its annual CO2 emissions by around three million kilos and save 1.1 million liters of diesel," the company said Monday.

The deployment of hydrogen-powered trains on the network is part of a joint pilot project that's being funded by the states of Berlin and Brandenburg as well as the federal government.

Described by the International Energy Agency as a "versatile energy carrier," hydrogen has a diverse range of applications and can be used in a wide range of industries, including transportation.

According to the IEA, rail represents "one of the most energy-efficient transport modes." It is responsible for 9% of worldwide motorized passenger movement and 7% of freight, the IEA says, but only accounts for 3% of transport energy use.  

It does, however, rely heavily on oil, which represented 55% of the sector's total energy consumption in 2020. Under the IEA's scenario for a net-zero energy system by the year 2050, oil use in rail would have to drop to "almost zero" by the middle of the century.

Siemens Mobility is one of several companies that have been working on trains that use hydrogen. Others include East Japan Railway and European railway manufacturer Alstom. The latter has already carried passengers in Germany and Austria on hydrogen trains.

Bangladesh PM opens landmark USD 3.6 billion Padma Bridge

 BANGLADESH: The landmark Padma Bridge is not a pile of brick and cement but a symbol of Bangladesh’s pride, capacity and dignity, Prime Minister Sheikh Hasina said on Saturday as she inaugurated the country’s longest bridge entirely built with domestic funding.

The 6.15-km-long road-rail four-lane bridge is built over the Padma river connecting southwestern Bangladesh with the capital and other parts of the country. The multipurpose road-rail bridge, which is fully funded by the Bangladesh government, has been constructed at a cost of USD 3.6 billion.

“This bridge is not just bricks, cement, iron, and concrete This bridge is our pride, a symbol of our capacity, our strength and our dignity. This bridge belongs to the people of Bangladesh,” Hasina said.


Bangladeshi Prime Minister Sheikh Hasina opening the Padma Multipurpose Bridge, the Pride of Bangladesh.

The Padma Bridge would not only help improve intra-Bangladesh connectivity, but it will also provide much-needed impetus to logistics and businesses connecting India and our shared subregion, it said, adding the bridge will play an important role in fostering greater bilateral and subregional connectivity.


Prime Minister Hasina said that the foundation of the Padma Bridge is still the deepest in the world.


She said that the piles of this bridge have been laid up to a maximum depth of 122 metres while sophisticated technology has been used for earthquake prevention. Meanwhile, India has congratulated the Government of Bangladesh on completing the massive project.


“Congratulations to the government and people of Bangladesh on completing the landmark Padma Bridge project, from India!” the Indian High tweeted prior to the inauguration.

Monday, June 27, 2022

How global warming is exacerbating floods in Bangladesh




Heavy  and erratic rainfall has caused devastating floods, hitting parts of Bangladesh hard. Prime Minister Sheikh Hasina said there will be no quick respite for the country.Several regions in Bangladesh have been battered by catastrophic flooding over the past few days, killing at least 36 people and displacing hundreds of thousands.

At least 17 of the country's 64 districts, mostly in the north and north eastern Sylhet region, were affected by the natural disaster with several areas also losing electricity.

With more rainfall predicted over the coming days, Bangladesh's Flood Forecast and Warning Centre warned on Tuesday that water levels would remain dangerously high in the country's northern regions.

Many people in the affected areas are struggling to access food, drinking water and other essential supplies.

Local authorities said their medical teams were trying to reach flood-affected areas to provide them with tablets to purify drinking water.

Food and water in short supply

Officials from Bangladesh's Department of Disaster Management said that they were making "frantic efforts" to ensure there is food and drinking water for all the affected people.

But some people have complained that the government's response is slow and inadequate.

"People in the remote places are getting nothing," Nafisa Anjum Khan, a volunteer from Dhaka who is now working in the Sylhet and Sunamganj areas, told DW.

"For the seven days I have been working in those areas, I haven't seen local officials put any effort to deliver aid to those areas," Khan added.

She said that most of the groups working there were supplying dry food, which is not enough. "People are craving for cooked food. And baby food is widely missing."

The UN children's agency UNICEF said it was urgently seeking $2.5 million (E2.38 million) to respond to the emergency in Bangladesh and it was working with the government to supply water purification tablets, emergency medical supplies and water containers.

"Four million people, including 1.6 million children, stranded by flash floods in northeastern Bangladesh are in urgent need of help," UNICEF said in a statement.

Bangladesh very vulnerable to climate crisis

Prime Minister Sheikh Hasina visited the affected area this week and stressed the need for better preparedness to face such natural disasters.

"We haven't faced a crisis like this for a long time. Infrastructure must be constructed to cope with such disasters," she later said in a press conference in Dhaka.

Hasina also pointed out that there will be no quick respite for the country. She said that floodwaters would recede soon from the northeast, but they would likely then hit the country's southern region, on the way to the Bay of Bengal.

"We should prepare to face it," she said. "We live in a region where flooding happens quite often, which we have to bear in mind. We must prepare for that."

Bangladesh is considered one of the world's most climate-vulnerable countries, and the poor are disproportionately impacted by the effects of such disasters.

The current crisis has been worsened by rainwater flowing down from the surrounding hills of India's Meghalaya state, including some of the world's wettest areas like Mawsynram and Cherrapunji, which each received more than 970 millimeters (38 inches) of rain on Sunday, according to government data.

G M Tarekul Islam, a professor at the Bangladesh University of Engineering and Technology's Institute of Water and Flood Management, says climate change is a factor behind the erratic and early rains that triggered the floods.

"The erratic rainfall in India's Cherapunji and other areas is the main reason for this flood. Because of global warming, the climate has changed and so has the pattern of rainfall. Now we are observing more and more heavy rainfall," he told DW.

In its sixth assessment report published last August, the Intergovernmental Panel on Climate Change (IPCC) also noted the increasing frequency of heavy precipitation events since the 1950s and connected them to human-induced climate change.

What other factors are behind the increased severity?

Although floods are not new to the region, Islam said that the changing climate has made the monsoon -- a seasonable change in weather usually associated with strong rains -- more variable over the past decades, resulting in longer dry spells interspersed with heavy rain.

"Because of global warming, more and more aqueous vapor accumulates in the sky as clouds. When precipitation begins, it also takes down the accumulated vapor with it. Thus, the rain becomes more erratic and heavier," he explained adding: "That means, instead of getting an average amount of rain throughout the monsoon time, we get short spells of torrential rains."

The expert also blamed other factors like increased mining activity and cutting down of trees on the Indian side for contributing to the increased severity of the floods.

"When stones are mined and trees are cut off, the downward run of water becomes much faster. So we see the water flowing down faster and the rivers getting inundated," Islam said. "This also changes the river morphology. The extra sediments that are brought by the running water pile up on the riverbeds and further expedite the inundation."

 

Tuesday, June 21, 2022

Russia: Padma Bridge a true game changer

 The Russian Embassy in Dhaka on Monday said Padma Bridge is a "true game changer" as it offers multiple opportunities in terms of regional trade, investments, connectivity, employment, tourism, and many other fields.

The Russian Federation thinks the construction of Padma Bridge is a "landmark achievement" made possible by the far-sighted vision of the Bangladesh government and Prime Minister Sheikh Hasina."

Without doubt, the Russian embassy said, it will largely contribute to the national GDP growth and benefit the comprehensive development of the southwestern parts of Bangladesh.

"The dream of Sonar Bangla cherished by Father of the Nation Bangabandhu Sheikh Mujibur Rahman is coming true right before our eyes," said the embassy in a media release as Bangladesh is set to see formal inauguration of the dream project.

Prime Minister Sheikh Hasina will inaugurate the Padma Bridge on June 25.

Read: Padma Bridge: China lauds PM Hasina's leadership amid enormous difficulties

Undoubtedly, the Russian embassy said, the implementation of other mega projects including the construction of Rooppur Nuclear Power Plant with the assistance of the Russian company Rosatom will further contribute to the successful development story of Bangladesh, to prosperity and well-being of its people.

The embassy of the Russian Federation congratulated the government and the people of Bangladesh on the upcoming inauguration of the multipurpose Padma Bridge.

"It is commendable that this ambitious mega-project has been completely funded by Dhaka's own resources," said the embassy.

1.6 million children stranded by floods in Bangladesh: UNICEF

 

UNICEF is on the ground to protect children and to deliver emergency water and health supplies.

"Children need safe drinking water right now. Preventing deadly waterborne diseases is one of several critical concerns," said Sheldon Yett, UNICEF Representative to Bangladesh.

UNICEF is urgently seeking $2.5 million in funding for the emergency response as it provides life-saving supplies and services to children and families.

UNICEF has already dispatched 400,000 water purification tablets that can support 80,000 households with clean water for a week.

UNICEF is working to further support the Government of Bangladesh's emergency response with millions of water purification tablets, more than 10,000 water containers known as jerry cans, and thousands of hygiene kits for women and adolescent girls.

UNICEF is also procuring emergency medicines supplies for district health facilities.

In Sylhet division, 90 per cent of health facilities have been inundated, while cases of waterborne diseases continue to rise.

Children are at heightened risk of drowning, already one of the major causes of child deaths in the country.

Over 36,000 children have taken refuge in overcrowded shelters together with their families.

Schools have been closed, and exams cancelled, further hampering the education of children who already suffered an 18-months of pandemic school closure.

At least eight children have tragically lost their lives, according to UNICEF.

"Our heart goes out for the children whose lives have been lost. Children are the most vulnerable in this desperate situation. UNICEF is working around the clock with authorities and our partners to meet the immediate needs of children," said Sheldon Yett, UNICEF Representative to Bangladesh.

Thursday, June 16, 2022

Germany Accuses Russia of Pushing Energy Prices Up

 

Germany has accused Russian state-controlled gas giant Gazprom of attempting to push up energy prices by sharply reducing supplies.

Gazprom said it was limiting the amount of gas to Germany to under 70m cubic metres per day - well under half the current rate.

The reason it gave was to service equipment in the Nord Stream pipeline.

But German economy minister Robert Habeck said it was "a political decision" and not a technical one.

"It is obviously a strategy to unsettle and drive up prices."

Gazprom said initially on Tuesday it was cutting the Nord Stream 1 gas flow from 167m cubic metres a day to 100m but then on Wednesday announced it would be cut further to 67m cubic metres.

Gazprom also reduced its gas supply to Italy by around 15% on Wednesday, energy firm ENI said. Italy, like Germany, is heavily reliant on Russian gas, which accounts for 40% of its imports.

The Russian company's move came two weeks after European Union leaders agreed to block most Russian oil imports by the end of 2022 to punish Moscow for invading Ukraine.

Poland, Bulgaria, Finland, Denmark and the Netherlands have already had their Russian natural gas deliveries suspended after they refused a demand for "unfriendly countries" to pay in Russian roubles.

Russia's payment demand was seen as an attempt to boost the rouble after it was hit by Western sanctions. Greater foreign exchange demand for roubles was likely to increase demand and push up the currency's value.

Mr Habeck said Russia's actions showed European countries needed to end their dependency on fossil fuels urgently. In February, Germany suspended the opening of the Nord Stream 2 pipeline, shortly before Russia launched its war in Ukraine.

The minister said he would wait to see how the move affected the European and German gas markets but said suppliers had always managed to find gas from other sources.

"We don't have a supply problem in Germany either," he said. "Gas will probably continue to be stored. We have made very good progress in this area in the last few days and weeks.

"However, we will certainly have to wait two or three days to get a complete overview of how things are developing now."

Thursday, June 9, 2022

Bangladesh Knowledge Book: More DC fast charging, no app sign-ups under White...

Bangladesh Knowledge Book: More DC fast charging, no app sign-ups under White...: The Biden administration is revealing a new set of standards to help accelerate the installation of 500,000 electric vehicle chargers across...

More DC fast charging, no app sign-ups under White House’s new EV charging rules

The Biden administration is revealing a new set of standards to help accelerate the installation of 500,000 electric vehicle chargers across the US by 2030.

The new standards give states guidelines on awarding contracts for EV charging projects, directing the companies who get them to build chargers that are convenient, affordable, and accessible to the broadest number of people. And they outline the types of projects that won’t receive federal money, including proprietary charging stations that can only be accessed by one company’s vehicles, like Tesla’s Supercharger network.

The new standards come as much of President Joe Biden’s climate change fighting agenda remains stalled in Congress. The president was able to secure $5 billion in funding as part of his infrastructure plan that was signed into law late last year. But other elements of his plan, including more lucrative tax breaks for EV buyers, lack a clear path forward.

The newstandards come as much of President Joe Biden’s climate change fighting agenda remains stalled in Congress

Earlier this year, the administration announced that it will direct the $5 billion to states to create this network of EV charging stations along designated “Alternative Fuel Corridors,” defined as approximately 165,722 miles of the National Highway System, covering 49 states and the District of Columbia.

Under the plan, called the National Electric Vehicle Infrastructure Formula Program, states must submit their requests to the Joint Office of Energy and Transportation by August 1st. The Federal Highway Administration will approve eligible plans by September 30th, with $615 million being made available in fiscal year 2022..

As the money begins to roll out, the White House said it wants to ensure that Americans aren’t getting more of the same — a fragmented network, with chargers that are often broken or hard to find.

“Everyone should be able to find a working charging station when and where they need it, without worrying about paying more or getting worse service because of where they live,” Transportation Secretary Pete Buttigieg said in a briefing with reporters. “You shouldn’t have to sort through half-a-dozen apps on your phone just to be able to pay at a charging station. And no matter where you live or where you’re headed, everyone should be able to count on fast charging, fair pricing, and easy-to-use payment for their EVs.”

Under the new standards, EV charging stations would be built every 50 miles along major highways, and no more than 1 mile off those corridors. They direct states to ensure that EV charging stations are built in less dense parts of the country, like rural and tribal communities. They require EV charging companies to provide customers with real-time information, so they can tell when a charging station is occupied or broken. And they require at least four 150kW DC fast charging ports per station — which would go a long way toward addressing the concerns of people who worry about the utility of electric vehicles on road trips or other longer journeys.

they require at least four 150kW DC fast charging ports per station

The standards would also prohibit EV charging companies that are receiving federal funding from requiring drivers to sign-up for memberships in order to access stations. And they would direct companies to install charging ports that can be used by the broadest number of vehicle owners. (Some EV makers, including Tesla and Rivian, are building out their own EV charging network with proprietary plugs, meaning they can only be accessed by their own customers — though that may be changing.)

The intention, Buttigieg said, is to send “a market signal toward a standard charging port for stations to accommodate the widest possible set of vehicles, and accommodate adapters for all vehicles.”

The administration is also working on additional plans for residential incentives, where most EV owners will do their charging, and for those vehicle owners who live in multi-unit dwellings and apartment buildings. An “EV working group” will make recommendations to the Department of Energy, which will then put those plans into motion.

“If we’re going to build out infrastructure like we haven’t done since the Eisenhower era, we have to build it right,” Energy Secretary Jennifer Granholm said.

Thursday, June 2, 2022

The Engines That Powered The Largest Number of Different Cars

Fuel economy and performance are among the more obvious, but the opposing qualities of a stirring sound and near-silent running are also worth considering. In this article, we're going to focus on another feature: versatility. This can be defined as the engine's suitability in a wide variety of cars, perhaps produced over a very long period, and in some cases its use in other machines which are not cars at all.

Engines which are dissimilar in almost every other way can be equally versatile. The term applies not only to one of the humblest Fiat engines but to one of the greatest ever produced by Ferrari - and, as we'll soon find out, to other engines which bear little or no resemblance to either of them:

Alfa Romeo Twin Cam

Alfa Romeo has built many four-cylinder engines with double overhead camshafts, any of which could be described as a Twin Cam. However, when people speak of an Alfa Twin Cam they are usually referring to a motor designed by Giuseppe Busso (1913-2006) which first appeared in 1290cc form in the 1954 Alfa Romeo Giulietta (pictured).

The Twin Cam survived well into the 1990s, latterly in turbocharged form. Its capacity was extended as far as 2056cc, but a tiny 896cc version was also used for the Tipo 103 prototype built in 1960.

AMC Straight-6

American Motors Corporation (AMC) brought out a new inline six-cylinder engine in 1964 and used it for models such as the third-generation Rambler Classic and the later AMC Hornet and Gremlin.

Chrysler took full control of the often troubled company in 1987 and continued to use the straight-6 for many years afterwards, for example in the 4.0-liter gasoline version of the second-generation Jeep Cherokee (pictured). After a remarkable career powering very different types of vehicle, the straight-6 was finally discontinued in 2006; its last home was a Jeep Wrangler.

Austin Seven

The little Austin Seven was one of the UK's most popular cars during its production life from 1922 to 1939. Its simple engine powered many production cars, including not only several variants of the Seven but the first ever BMW, which was a Seven built under licence in Germany.

In both naturally aspirated and supercharged forms, the engine brought Austin great success in motor racing. It was also for many years the only permitted engine in the 750 Formula for home-built competition cars. The Formula was later rebuilt around a Reliant engine, which was itself based on the Seven unit.

Bugatti Royale

Bugatti's enormous 12.7-liter eight-cylinder engine of the 1920s was versatile not because many examples were built, but because they were used for such dramatically different purposes.

The engine was intended for the super-luxury Bugatti Royale, which found very few customers even among European monarchies in the 1930s. Only seven of these cars were built, but production of the engine was much higher; it was used to power trains operated by the French National Railway, SNCF, into the mid 1980s.

BMC A-Series

The BMC A-Series made its debut in the 1952 Austin A30 and kept going (latterly in A-Plus form) until the Mini (pictured) was discontinued in 2000. It powered an astonishing number and variety of road and competition cars, of which the Austin Allegro, Metro, MG Midget, Morris 1100/1300 and Wolseley Hornet represent only a very small selection.

ven the full list would be dwarfed by all the cars fitted with A-Series engines by kitcar manufacturers and race car builders. These include several Coopers, the Cox GTM, the Midas, the Peel Viking, the Unipower and the gloriously named Deep Sanderson.

Chevrolet Small Block

Almost every General Motors brand developed its own V8 engine in the second half of the 20th century, but none was produced in such large numbers as the Chevrolet Small Block. Introduced for the 1955 model year Bel Air and Corvette, it spread rapidly throughout GM, powering everything from muscle cars like the Chevrolet Camaro to sedans, pickups and vans.

As a reliable source of relatively cheap power, it was also picked up by other manufacturers including Checker, Gordon-Keeble and Iso, and was used in innumerable competition cars. Well over 100 million examples are believed to have been built. Its final application in a new car was in 2003, in the Chevy Express and GMC Savana vans, though GM will still sell you a ‘crate’ engine to revive an older car.

Chrysler Hemi

Three generations of Chrysler V8 engine are known as Hemi, though only the first two have the hemispherical combustion chambers which inspired the name. The earliest was originally known as the FirePower. Although it was produced only in the 1950s, it was used in a great many Chrysler models including the '58 300D (pictured), as well as the Dodge C-Series pickup and the Facel Vega Excellence.

The Hemi found great favour among competition drivers, especially those involved in drag racing. It was also used to power what the Guinness Book of Records states is the loudest siren ever made.

Ferrari Colombo V12

Gioacchino Colombo (1903-1988) designed a 1.5-liter V12 for the first car to wear a Ferrari badge, the 125S racer of 1947. The little engine proved to be extremely adaptable, and was used for many years in capacities of up to 4.9 liters.

The Colombo unit powered a very wide variety of Ferrari models including the Daytona (pictured) and the 250. It remained in production for over forty years, finally bowing out when the 412 was discontinued in 1989.


The Fiat 600 made its debut in 1955 with a 633cc engine designed by Dante Giacosa (1905-1996). Gradually enlarged to 1050cc, the little motor known as the 100 Series would power an immense number of small Fiats and related vehicles for the remainder of the century.



Flathead is both the American equivalent of the British term 'sidevalve' and the nickname of the first mass-market V8 engine, the final piece of engineering spearheaded by Henry Ford himself, and launched in 1932. The Flathead found favour with a wide variety of users. It was fitted to several upmarket Ford and Mercury cars either side of World War II, and to the Universal Carrier tank. Simca developed its own version for cars and military vehicles.

The Kent engine made its debut in the 1959 Ford Anglia and was still being used, in highly developed form, in the Ford Ka of 2002. During that period, it also powered the Capri, Consul, Cortina and Fiesta, as well as models produced by specialist manufacturers including Caterham, Marcos and TVR.

The Kent was also the basis for the Lotus Twin Cam engine and most early Cosworth units, including the celebrated BDA and its derivatives. In its original form, the Kent has been used in nearly every form of motorsport, notably the Formula Ford single-seater racing class introduced in 1967.

Ford built the Model T at the rate of nearly one million per year from 1908 to 1927. Its simple 2.9-liter four-cylinder engine therefore appeared in an enormous number of cars and related trucks, ambulances, race cars and tractor conversions.

It was also used in boats, a New Zealand railcar and an American single-seat aircraft, and as a stationary engine.


Some idea of the six-cylinder Jaguar XK engine's versatility can be gained from the fact that it was used first in the immediately post-War Jaguar XK120 sports car and last in the Daimler DS420 limousine, that stalwart of British funerals and produced until 1992.

From 1948 until 1971 it was Jaguar’s only engine, and therefore appeared in everything from luxury sedans to the Le Mans-winning D-Type. Cooper, HWM, Lister and Tojeiro were among several specialist manufacturers who used the XK to power their race cars. It could also be found in tanks, military reconnaissance vehicles, the Panther J.72 retro sports car and the Dennis D600 fire engine.

Named after the area of Paris where Renault has its global headquarters, the Billancourt engine was developed for Renault's first post-World War II car, the 4CV (known in the UK as the 750).

The Rohingya Smartphone Photographers

  বাজেট স্মার্টফোনের ক্যামেরা বাংলাদেশের শরণার্থী শিবিরে আটকে পড়া অনেক রোহিঙ্গার জন্য তাদের নিজস্ব গল্প বলার একটি উপায় ...