Best Brand Refrigerated Air Conditioning

Best Brand Refrigerated Air Conditioning – As the world heats up, so does the demand for air conditioning, leading to the climate crisis

At first glance, the 32 panels atop a store in Stockton, California look like solar panels. But this installation is not designed to use the sun, but to reject it. Coated with a film technology that reflects radiation from the sun, the panels – and anything underneath them – can drop to 15 F (8 C) below ambient temperature, even during the day, without the need for electricity.

Best Brand Refrigerated Air Conditioning

Best Brand Refrigerated Air Conditioning

It is “a fundamentally different way to achieve cooling and harnessing renewable resources untapped,” said George Keiser, chief operating officer of SkyCool, the company behind the panel, which is glazed in a multi-layer optical film developed by 3M. “We use the sky as this huge heat sink,” Keizer said, sending excess heat from the Earth’s surface, through the atmosphere and into space.

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In a grocery store, panels are used to cool the water that flows behind it, which is then pumped to a condenser that runs the store’s refrigerator. This reduces the temperature of the refrigerant inside, improves efficiency and reduces annual energy consumption by 15%.

Best Brand Refrigerated Air Conditioning

3M film has also been applied directly to bus shelters in Tempe, Arizona, to keep passengers cool while waiting.

“The long-term goal is to see if we can find a way to use films or panels to replace air conditioners,” said Eli Goldstein, the startup’s founder and CEO.

Best Brand Refrigerated Air Conditioning

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Extreme hot weather kills about 700 people in the U.S. each year — more than hurricanes and floods combined — and an estimated 356,000 worldwide.

Air conditioning is the most obvious direct response to dangerous global warming. It also makes it worse.

Best Brand Refrigerated Air Conditioning

Air conditioners use more electricity than any other appliance in the home. They consume 10% of the world’s electricity (along with electric fans) and emit powerful planet-warming gases into the atmosphere. On the hottest days in some parts of the US and the Middle East, 70% of the peak residential electricity demand is for space cooling.

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As global temperatures rise and heat waves become more common and deadly, the demand for air conditioners is increasing, especially in developing countries such as India, China and Indonesia.

Best Brand Refrigerated Air Conditioning

The International Energy Agency (IEA) estimates that global demand for space cooling will more than triple by 2050. Growing demand for cooling is “one of the most critical energy issues of our time,” according to a 2018 IEA report, which concluded that to keep people cool without spiraling energy demand, the answer “first and foremost” to increase the efficiency of the AC.

But that’s not all they’ll do. Eliminating the effects of dangerous heat without making the world even hotter will require several solutions, from more efficient air conditioners to shadier roads to new technologies that fundamentally change the way we keep cool.

Best Brand Refrigerated Air Conditioning

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New trees are planted along the Valley Metro Railroad in Phoenix, Arizona. There is little shade in the neighborhood and the heat can be 20 F warmer than elsewhere in the Phoenix metro area. Photo: Caitlin O’Hara/The Guardian

Most air conditioners are relatively cheap and inefficient. The energy efficiency standards that engines must meet do not come close to maximizing their potential, said Iain Campbell, a senior fellow at the nonprofit Rocky Mountain Sustainability Institute, and are 95 percent below the minimum.

Best Brand Refrigerated Air Conditioning

Another big problem with air conditioning is the leakage of hydrofluorocarbon (HFC) refrigerants, a powerful planet-warming gas that contributes greatly to global warming, into the atmosphere. The most commonly used – R-410A – is more than 2,000 times more potent than carbon dioxide.

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As the engine operates, the refrigerant travels in pipes between low and high pressure regions, becoming a gas as it absorbs heat from within, and releasing heat to the outside as it condenses back into a liquid. In gaseous form, HFCs can leak through joints in pipes (a typical residential unit can lose 10% of refrigerant per year) or can be released entirely if the air conditioner is disposed of without being properly dried.

Best Brand Refrigerated Air Conditioning

In 2018, the Rocky Mountain Institute launched the Global Cooling Prize, offering a $1 million prize for a new home cooling technology that is five times more efficient and less polluting than current standard machines, costs no more than twice as much to consumers, and can be installed in homes that have abide.

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The two winning prototypes, announced in April and produced by the two largest refrigerator manufacturers in the world – Daikin and Gree – work the same as air conditioners today, but are built with better taste and control and are configured to use more environmentally friendly refrigerants than those found in typical residential air conditioning units. They also added features such as engineering to remove excess moisture from the air to make it easier to cool (it takes more energy to make the air moist).

Best Brand Refrigerated Air Conditioning

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Winner says it will bring its design to market by 2025. But until policymakers in the U.S. and abroad raise efficiency standards for air conditioning units, Campbell said, there’s no clear path for consumers to differentiate these new machines. and that. which are less efficient and have a greater impact on the climate.

Mechanical engineer Vince Romanin realized that few consumers researched the performance of air conditioners or specific refrigerants before purchasing, so he marketed air conditioning technology on user experience rather than environmental credentials.

Best Brand Refrigerated Air Conditioning

“There are about 50 million people in the U.S. with window AC and almost everyone hates it,” said Romanin, Gradient’s CEO. Designed to span the windowsill, with noisy bits out and tech in the window, the Gradient machine is not “common and ugly,” says Romanin, and does not block the view.

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Gradient uses lower emission refrigerants packaged in factory-sealed, leak-proof tubes. Coming to the market next year, it’s two devices in one: a heat pump system that replaces warm air with cold air in the summer can be reversed to become a space heater in the winter.

Best Brand Refrigerated Air Conditioning

Campbell is excited about the potential of the new material to push cooling technology even further. Refrigeration Award finalist Transaera developed a new sponge-like material that improves air conditioning performance by passively absorbing moisture from the air. But until the government enacts standards that rate air conditioners on how effective they are at reducing humidity, Campbell said, manufacturers have little incentive to include the technology in their products.

Irish cleantech company Exergyn is among those developing systems that replace dangerous, leaky refrigerants with solid materials that contract and relax as they absorb and release heat. Solid-state refrigerants have “significant promise,” Campbell said, but more testing is needed to prove they can last long.

Best Brand Refrigerated Air Conditioning

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Better air conditioning alone won’t solve the growing heat crisis, but it’s an important part of the puzzle, Campbell said, especially for growing urban populations around the world.

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There are many other things to do first, he said. This includes designing buildings that use less energy, have better ventilation and are better insulated from heat.

Best Brand Refrigerated Air Conditioning

“If you want to cool people down, you have to provide shade, period,” said V Kelly Turner, assistant professor of urban planning at UCLA’s Luskin School of Public Affairs. Whether it is in the form of trees or a canopy, the human body must be protected from the direct heat of the sun.

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There are also indirect effects of the sun heating natural surfaces such as roads and buildings. In cities, where the urban heat island effect can raise temperatures by as much as 20 F (12 C), the simple act of painting a roof white can reflect enough sunlight to reduce the heat by a few degrees.

Best Brand Refrigerated Air Conditioning

A dozen US cities require or encourage light-colored roofs in new construction, and in August dark roofs were banned in the southwestern suburbs of Sydney, Australia, where new rules mandate that every yard must have a tree.

It’s necessary to address the underlying problems that are making cities hotter, Turner said. But “we’re going to need some air conditioning because [without it], you can’t get the core temperature cool enough if you’re exposed to extreme heat.” This is especially important, he stressed, for vulnerable people, including rural and urban workers, children, the elderly and low-income tenants, who not only need access to cooling centers on the hottest days, but also need air conditioning at home. (Many places in the U.S., he said, have laws that limit how cold apartments can be, but nothing to prevent homeowners from overheating.)

Best Brand Refrigerated Air Conditioning

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Cooling gifts target AC – the last, important element. “If your living space is a small apartment in the middle of nowhere and you have six family members living there and the temperature in the summer is about 120 F, 130 F, you’re not going to say, ‘Well, I need to insulate the apartment or I should put in some shade,” said Campbell. “You think, ‘I need conditioner so we can all do it

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