you have, you have a one to delete this on the, on the, on expected side to side. take a look at these building for thoughts and single poor and even new delhi, new york and hong kong. noticed anything. and these parts of the world life without air conditioning can be uncomfortable or downright dangerous. more than a dozen people have died and in, during the last 2 months, due to a severe heat wave. 5th, teeth weight, waste, heat weight. but that brings us to our dilemma. technology needs lots of energy. in fact, cooling, building accounts for 10 percent of for global electricity consumption. and that's bad news for global warming. so viciously, we cool the indoors, but we won the outdoors, therefore generating the need for more cooling. but there are solutions, some traditional, some modern that don't need up massive amounts of energy. so can they help us break

out of this visual circle? the, the story behind this conundrum begins in new york city in 1982. that's where the engineer will as carrier, leave the foundations for the modern air conditioner. he designed an engine to control the humidity in a printing plan because it was working the paper. simply speaking, the system blue air over coils filled with cool water. not only that, the humidity condensed on these quotes, but the air and the plants also became comfortably cool. over the next decade, more developed versions of the primitive system needed into businesses and later into american house. this monkey baby will sleep quietly through the night is no matter suddenly resting, working, living during hot weather was not only possible. it could be pleasant. nowadays, americans are still some of the most prolific users globally 90 percent of us households on an air conditioner. and some of is the hardest parts of the room.

it's not even 10 percent. but other countries want to catch up. just look how much more energy some of these emerging economies are projected to use in the coming decades to colder homes and buildings. this is 2016 and this is 2050. if you see in the air conditioning market is going in double digits on good, clunky is working to open up the global market for high efficiency. air conditioners in the us population is growing in the is getting even more of like a but also a large portion of the indian population is one of the nice thing is moving to cities and all of that together wants to do is do a huge demand for the air conditioners, because of trends, like these global energy demand for space cooling, that's projected to triple by 2050. the question is how to meet the soaring demands without exacerbating the heat? because then much of the world, the energy because when technology is powered by fossil fuels, these are the lots of greenhouse gases which make the abaski or hotter. and

nowadays, is these have refrigerants running through their coils to absorb heat from the warm air. some of them are literally greenhouse gases. you don't want those leaking out of your unit on top of that air conditioners, cool interest basis. by pushing out the heat, dep refrigerants absorb. that means they make the immediate surroundings hotter to, and people who can't afford to suffer most from that. so you go to 3 for the effect as a result of air conditioning on that my skin and be able to reduce it down to either efficient, holding or to cooling without air conditioning is really a smart solution to get that this is per side via, via an expert in passive solar design, he says there are 3 steps to cooling, sustainable here. first, we need to reduce heat at a city wide scale because that is access for everybody. you may have heard of the urban heat island effect. it's when urban areas like these get warm or vendors or

rounding because all of this concrete absorbs and retain seats. and there's also lots of waste heat from human activities like transport or wild air conditioning, creating more spaces with shady trees and other plants less than a specific. like here in berlin, the colombian city has made a gene, was able to reduce average temperatures by 2 degrees celsius, only 3 years after planting green core doors. the inter connected network of greenery. spence does lots of waterways and busy polluted streets and minimizing heat. expelled by cars also makes a difference in spain. parcel on a super blocks prioritize pedestrians and cyclists, but scale matters. the cities institute for global health estimates that $117.00 heat related pets could be avoided every year of hundreds more blocks were introduced. the next step is designing buildings that aren't as reliant on air conditioners. and this is where we can really learn from traditional architecture

before technology or keep the runs awards phone solutions to, to show by the preferred chunk of, of done leads bio climatic architecture projects and countries like vietnam and more atanya. that means that designs take local climates into account, so we have to study to, if we already set to go back to the architecture. some modern buildings are already doing this, such as come to the university which uses wind power, so keep its buildings cool. this method has been used in iran and other middle eastern countries for centuries. the so called wind captures are designed to trap fresh air and directed indoors. the hot air it gets pushed out. you may also have noticed that houses in hot climates are from light. some countries like india are bringing back this approach by painting grooves with line based whitewash, which absorbs less heat. this can reduce indoor temperatures by 2 to 5 degrees celsius. when designing new buildings, bio kinetic architects tend to combine different sources of inspiration. but they

will all tell you. location is everything. you have to pay attention about this an orientation and make sure your best sides of those exposed to the direction. and then we use registered the jeff, probably the wind direction. knowing the wind direction is important to design openings that encourage cross ventilation. other features that can help save off heat or shading devices to keep the facade cool. and insulation prevents heat from traveling through your roof. for example, of those says these methods can reduce in north temperatures by about 5 degrees celsius. well, ceiling fans can help circulate this cooler air. issues may still need to be used sometimes, but to a much lesser extent, the problem in many countries going to a construction boom, new buildings often look like this. but it does tend to bid them with floor to ceiling glass. and that's of your love problem because every time you put

a glass into a building, you've done it basically into a hot box. it's like a song ok, architects and engineers say this, acetic is popular because it's perceived this week, modern and left a natural life. changing that would require more rigorous building regulations around energy efficiency and a map of cultural shift to actually get the men forced on the ground. most of the object, your score is not. uh, we on the train for the video in green that into there sort of business as usual approach, you will get this and uses another big obstacle is that this approach tackles new constructions. so what about all the old, badly insulated buildings that already exist? this takes us to the next solution, more efficient air conditioning because there is no technological reasoning for a cease to use as much energy as many commercial models do. now the ac industry is included in around 300 in order to acknowledge the so it's been working

convenience, you know, at the switch of a button, we get cooling. this may have such or she works in a climate friendly cooling work festival. there hasn't been a lot of motivation or market factors that have spurred innovation and you really see how wasteful a seas can be in places like india, singapore, or parts of the us. because this was word off and get human about a total of the energy is used for managing too many well, some modern models have a so called dry mode to target humidity. kalonski says air conditioners are still pretty bad at measuring how much moisture is in the air, and consequently, how much moisture they need to remove for optimum comfort. so many people simply bl after a seas to over cool the room and get too many down to a desired level in 2018 and innovation competition called the global cooling

prize show that there are ways around this r m i r u s. non profit dedicated to sustainable energy use, cooperated with the indian government and a global initiative called mission innovation to elect to winning teams. they used better than tools. they had the biggest ends in capabilities. and they weren't able to just in both the temperature and the human and that's how they weren't able to optimize the performance of an air conditioner period with other technological improvements. the 2 groups came up with models that had a 5 times lower climate impact. kolowski says, one of the teams wants to put its unit on the market and 2025. but that comes with a set of challenges. the markets testing standards need to be updated. so the performance review takes into account how efficiently the air conditioner controls community. large buyer is also need to come on board to bring down the costs. and consumers need to be incentivized to buy more efficient models even though the

sticker price may be higher. while the more efficient air conditioners are mostly upfront and you will see much more energy or the any your lifetime of the air conditioner and therefore the cost of ownership is, is about half of the standard products. but that's where the challenge lies. either consumers don't have that financial, a melody to spend that money upfront, or the thought about it. but what if we thought about efficient mechanical cooling on a much larger scale system like this is already functioning and singapore here and underground air conditioner. it's how did as the largest in the world quotes, residential buildings, bags, balls, and this iconic hotel. the technology is called district cooling and it can save up to 50 percent on energy and emissions. that's because having one big planned cooling an entire district makes it super efficient. the water is chilled 25 meters

below the ground before its pipes across different buildings. the shot into 4 district cooling is in terms of infrastructure. right? it's, it's a, it's a big capital investment and it did quite a lot of infrastructure. so these, like toronto parents and hong kong have already taken on the can last, the task of cooling thousands of buildings with one system. in some cases, district cooling makes use of networks that already exist. both of the system and terrorist runs through the cities to which network. but for the most part, district cooling is better suited for new constructions. for example, would you write international finance, tech city, also known as gift city? well, buildings, a new hyper dense engine district developers had a blank canvas to implement any cooling solution. they wanted their choice, district cooling because it's more efficient and cheaper to maintain. this may sound utopian, but like all other solutions,

it requires lots of upfront capital. know how and of course awareness still experts say this type of investment is urgently needed. whether it's on a city wide or neighborhood scale, or in broader a technological innovation. especially in places like india, china and indonesia, where is the usage has projected to sore. you don't have an option, we don't have enough energy in the world to be able to do all the building that's needed. even as we try to do it has to do with energy fields like slow steps and, and sometimes they are like we are certainly making our way to with a better way to cool or built environment. the good uses cooling doesn't always have to look like this. but if we don't move in a more sustainable direction, fast enough, we risk thing trapped in a solution that is actually part of the problem. i know i wouldn't have survived the summer without my trusted phone, so i'm wondering how do you pull your home and with any of these solutions, make a difference in your life. let us know the comments and don't forget to subscribe

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