Heating & Cooling Contractors Near Me - As the world warms, so does the need for air, which itself contributes to climate problems
At first glance, 32 panels in a grocery store in Stockton, California look like solar panels. But this installation is not about using the sun, but against it. Covered with film technology that reflects the sun's rays, the panels - and everything under them - can drop to 15F (8C) below ambient temperature, even in the middle of the day, without requiring electricity.
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It's "a different way of getting things cool and using non-renewable materials," said George Keizer, CEO of SkyCool, the company behind the panel, which is made of 3M's multilayer optical film. . "We're using the sky as a giant heat sink," Keizer said, sending excess heat from the Earth's surface through the atmosphere into space.
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In the food industry, the panels are used to cool the water flowing behind them, which is then fed to the condensers that provide power to the store's refrigerators. This reduces the temperature of the refrigerant inside, increases efficiency and reduces annual energy consumption by 15%.
3M film has also been installed directly at a car park in Tempe, Arizona, to keep passengers calm while they wait.
"The long-term goal is to see if we can develop a way to use foil or panels to replace air insulation," said Eli Goldstein, co-founder and CEO of the startup.
Extreme weather kills about 700 people a year in the United States — more than hurricanes and floods combined — and about 356,000 worldwide.
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Cold air is the most immediate consequence of dangerous warming of the planet. And it makes it worse.
Air conditioners use more electricity than any other appliance in your home. They consume 10% of the world's electricity (along with electric fans) and send global warming into the atmosphere. On the hottest days of the year in parts of the US and the Middle East, 70% of peak electricity is for air cooling.
As global temperatures rise and heatwaves become more severe and deadly, the demand for greenhouse gas emissions is growing, especially in emerging economies such as India, China and Indonesia.
The International Energy Agency (IEA) estimates that global demand for cooling will triple by 2050. The growing demand for cooling is "one of the biggest energy challenges most important of our time," according to a 2018 IEA report that said it will be kept. people are cooling without increasing the energy demand, the "first and foremost" answer is to improve the efficiency of the air conditioning.
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But not everything. To reduce the effects of dangerous heat without causing global warming, a variety of solutions will be needed, from efficient ventilation, to shaded streets, to new technologies which will change fundamentally that we stay calm.
A new tree was planted along the Valley Metro in Phoenix, Arizona. There is little shade in the area, and temperatures can be 20 degrees warmer than other parts of the Phoenix metro area. Photo: Caitlin O'Hara/The Guardian
Most air conditioners are cheap and very efficient. The energy efficiency standards that the machines will meet are not close to maximizing their potential, Iain Campbell, a colleague at the non-profit organization Rocky Mountain Institute, and 95% falls short of the minimum.
Another major problem with air conditioners is that they release hydrofluorocarbon (HFC) refrigerants into the atmosphere, powerful gases that warm the planet and are a major contributor to global warming. The most commonly used - R-410A - is more than 2,000 times stronger than carbon dioxide.
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As the machine operates, the refrigerant passes through the pipe between the low and high temperature, turning into a gas as it puts heat inside and releases heat outside, turning back into the water. In gaseous form, HFCs can migrate through joints and pipes (a typical residential building can lose 10% of its refrigerant per year) or can be completely released if the air is lost. not properly cleaned.
In 2018, the Rocky Mountain Institute announced the Global Cooling Award, offering a $1 million prize for home cooling technology that is five times more efficient and less polluting than today's standard units, costing more than twice as many consumers and can be. installed in existing buildings.
The two award-winning models, announced in April and produced by two of the largest refrigeration manufacturers in the world - Daikin and Green - work in the same way as air conditioners. modern, but has been designed with better sensors and controls and designed to be more environmentally friendly. environmentally friendly refrigerants than those found in air conditioners. They also added features such as engineering to remove excess moisture from the air to cool it (it takes more energy to cool the air).
Champions say they will bring their plan to market by 2025. But until U.S. and foreign policymakers consider efficiency standards for wind power, Campbell said, there's no clear path. for buyers to know the difference between these new machines and the ones that are. is not efficient and has a great impact on the climate.
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Engineer Vince Romanin recognizes that few consumers evaluate the performance of air conditioners or specific refrigerants before purchasing, so he sells his AC technology based on user experience rather than environmental credentials.
"There are about 50 million people in the U.S. who have window air conditioners, and almost everyone hates them," said Romanin, Gradient's president. Designed to hang on the window sill, with the exterior noise-canceling technology installed below the window, the Gradient machine isn't "too big and ugly," Romanin said, and it's not. The view is also blocked.
Gradient uses a low temperature refrigerant that is placed in tubes that make the factory closed. Coming to the market next year, this device is two devices in one: a heat pump system that replaces hot air in summer with cool air and does the opposite in summer cold to give way to heat.
Campbell is excited about the potential of innovation to advance cooling technology even further. Refrigeration award winner Transaera is developing an "innovative sponge-like material" that can improve the efficiency of air conditioning by extracting moisture from the air. But until the government introduces regulations declaring air conditioners for their effectiveness in reducing humidity, Campbell said, manufacturers have no incentive to incorporate the technology into their products.
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Irish Cleantech company Exergyn is one of the companies that develops a system that replaces harmful refrigerants with solids that interact and relax as they absorb and release heat. Solid-state refrigerants hold "remarkable promise," Campbell said, but need more testing to prove they can last that long.
Air quality alone won't solve the growing heat problem, but they're an important part of the puzzle, Campbell said, especially for growing urban populations around the world.
He said that there are many other things that need to be done properly first. This includes creating buildings that use less energy, have better ventilation and are better protected against heat.
V Kelly Turner, an assistant professor of urban planning at UCLA's Luskin School of Public Affairs, said, "If you want to calm people down, you have to provide shade, period." Whether in the form of a tree or a landscape, it is important to protect the human body from direct sunlight.
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There are also indirect effects of the sun heating physical surfaces such as roads and buildings. In a city where the urban heat island effect can raise temperatures as much as 20F (12C), the simple act of painting a white roof can reflect enough sunlight to reduce temperatures by a few degrees and how many.
A dozen American states require or support or ban light-colored roofs in new laws, and in August, black-colored buildings were banned in the southwestern part of Sydney, Australia, is where a new law mandates that every home must have a tree.
It is important to solve the problems that cause the city to burn, said Turner. But "we're going to need air conditioning because [without it] you can't lower your body temperature properly if you're really hot." He emphasized that this is especially important for the vulnerable, including farmers and construction workers who work outdoors, children, the elderly and low income earners. who want not only to have a cooler on the best days, but also cool air in their home. (Many places in the U.S., he said, have laws that limit how cool homes can be, but none that prevent homeowners from overheating.)
Award Cooling is for air conditioning - the last thing that matters. "If your home is a small apartment on a high-rise building and six families live there and the temperature in the summer is around 120 F, 130 F, you don't say, 'Well, I want to cover m. house or put in some shade," said Campbell. "You think, 'I want a god mask so we can all have it.'
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