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Baking Bread in a Solar Oven

Baking Bread in a Solar Oven

Since 2019, Lebennon has been facing an economic crisis. Following decades of corrupt government financial mismanagement, banks started to impose restrictions on withdrawals. They stopped giving short-term loans to businesses and no longer provided them with US dollars for imports. As a result, this reduced the country’s ability to pay for imports, including essentials such as wheat and oil.

Moreover, many of Lebannon’s bakeries rely on expensive diesel generators for electricity because the ongoing economic crisis has devastated its power grid. In 2021, the country’s two main power plants ran out of fuel and shut down. Most households only receive about one hour of electricity per day, and the cost of food increased by 350 percent in April 2023. Many people in the country cannot even afford basic foods like bread. In some cases, the cost of a loaf has increased seven times in the space of a month.

To help feed the country’s population, an inventor, Toufic Hamdan, created a commercial bakery to bake bread in solar ovens. The startup “Partners With Sun” has installed a solar convection oven on the bakery’s roof. The Solar Oven uses large silver mirrors to capture and magnify the sun’s rays to build heat.

The heat is transported by a transfer fluid which is then used to help operate a convection oven, allowing it to reach a baking temperature of between 300 and 400 Celsius. The heat is used directly in food and beverage production. They have successfully made milk loaf, French bread and anything that can be cooked at this temperature. The Solar Oven is designed for industrial use in the baking industry.

The Solar Oven is able to cut up to 80% of the bakery’s fuel bill and improve its production efficiency. As a result, it also reduces the amount of diesel the country would have to import. As a result, it will reduce the price of the bread bundle that reaches the customer. Moreover, each bakery would save at least around 10 tonnes of diesel a month. By 2030, Toufic hopes to completely eliminate the use of diesel ovens in bakeries and rely only on solar ovens.

Lebanon is also increasing the use of solar energy for individuals and businesses. The country went from generating zero solar power in 2010 to having 90 megawatts of solar capacity in 2020. An additional 100 megawatts were added in 2021 and 500 megawatts in 2022. This is a sustainable way for people to move away from diesel and has become a stand-in for both grid-supplied electricity and private diesel generators.

Although the switch towards relying on solar power in Lebanon is now a response to the economic crisis than a reaction to climate change and air pollution, it is an inspiring way to show how we can use the earth’s resources to help our societies in times of crisis. The country now has a target to source 30% of its electricity from renewables by 2030. This switch will help provide electricity and food at reduced costs to the people of Lebanon during this economic crisis.

 

 


 

 

Source  Happy Eco News 

The unlikely test bed for hydrogen-power: the superjumbo A380

The unlikely test bed for hydrogen-power: the superjumbo A380

The Airbus A380 represents the last superjumbo of a bygone, kerosene-guzzling era. Now the double-decker will serve as the unlikely test bed to help the industry fly into a fuel-efficient future.

Airbus will use a model to test its first propulsion system using hydrogen, a fuel the planemaker wants to introduce on a new passenger aircraft by 2035. The modified double-decker, the first of its kind that Airbus ever built, will maintain its four conventional turbines, while a fifth engine adapted for hydrogen use will be mounted on the rear fuselage.

The unusual design of the demonstration aircraft, developed in collaboration with engine-maker CFM International, will allow engine emissions including contrails to be monitored separately from those of the engine powering the aircraft, Airbus said in a statement. Contrails, or the wispy clouds planes leave behind in the sky, are of growing concern in lowering emissions as they trap warmer air in the atmosphere.

The hydrogen test programme will give at least one of the troubled jumbo jets, consigned to the commercial scrap heap even before the pandemic, a second life as it tests the new technology.

 

While hydrogen is still under research for use in jet engines, Airbus is attempting to rally the aviation industry behind the technology (file photo).

 

Bloomberg reported on Monday that Airbus was poised to announce the collaboration with CFM, a joint venture of General Electric and Safran.

While hydrogen is still under research for use in jet engines, Airbus is attempting to rally the aviation industry behind the technology as it faces mounting pressure to reduce emissions that lead to global warming. Last year, the airline industry’s main trade group endorsed a plan to reach net-zero carbon emissions by the middle of the century.

“To achieve these goals by 2050 the industry has to take action now and we are,” said Gael Meheust, CFM’s CEO.

The demonstrator is set to begin flying in the middle of this decade. While a commercial product will be much smaller, the development plan allows Airbus to take advantage of the A380’s size to give engineers room for extra tanks, testing equipment, and the fifth engine at the back, executives said.

The main deck of the aircraft will have four hermetically sealed hydrogen tanks and a distribution system to the engine, a modified GE Passport turbofan. That smaller-scale version of CFM’s LEAP engine was originally designed for the business jet market and was chosen because of its light weight.

Airbus will carry out ground tests this year, then convert the aircraft, targeting flight tests by the end of 2026. This is in line with the company’s existing timetable to make its technology choices by 2027 and launch a hydrogen jet by 2035, Chief Technology Officer Sabine Klauke said.

Airbus rival Boeing is testing hydrogen fuel cells on its ScanEagle3 pilotless military drone, while expressing scepticism about the 2035 target for commercial jetliners.

Safran has called hydrogen a “promising candidate” for future aircraft models, and has been developing materials and fuel-system adjustments to be used with the technology.

With manufacturers gearing up to ultimately make the shift to zero-emission flying, engine makers GE, Safran, Pratt & Whitney and Rolls-Royce will all compete for a share of the new market.

Rolls-Royce, which currently specialises in widebody engines, has said it is now considering a return to the single-aisle market and is speaking to both planemakers about possible opportunities. Pratt, a unit of Raytheon Technologies, said Monday that it received US Department of Energy funding to further its work on hydrogen propulsion.

 


 

Source Stuff