Древесная пена способна заменить кондиционер и сократить расходы на отопление на 35%

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Древесная пена способна заменить кондиционер и сократить расходы на отопление на 35%

На отопление и охлаждение помещений во многих странах приходится значительная часть (особенно в связи с последним топливно-энергетическим кризисом) расходов за жилищно-коммунальные услуги. Понимая это, специалисты Китая и Германии из университетов Нанкина и Геттингена разработали новый материал — древесную пену, способную в какой-то степени заменить крайне энергозатратные кондиционеры, сохраняя тепло в доме в зимнее и прохладу в летнее время.

Материал представляет собой вспененный теплоизолятор из древесины, хорошо отражающий солнечный свет. К примеру, в летнее время излишки тепла оно «отправляет» в атмосферу. Основа уникального материала — нанокристаллы целлюлозы, которые позволяют отражать до 96 % солнечного света и излучать до 92 % поглощаемого инфракрасного излучения.

Для проверки охлаждающих свойств материала ученые поместили его в изолированную алюминиевой фольгой коробку и установили ее под прямыми солнечными лучами в полдень. В результате, внутри коробки температура оказалась ниже, чем снаружи на 9,2, а при высокой влажности — на 7,4 °C.

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Если же покрыть древесной пеной все здание (за исключением крыши), то, по подсчетам исследователей, потребность в электроэнергии на отопление/охлаждение сократится примерно на 35 %.

В процессе изучения свойств древесной пены выяснилось, что по мере сжатия ее охлаждающие свойства уменьшаются. Однако и этот недостаток может стать достоинством — регулируя сжатие, можно «настраивать» свойства материала на соответствующую погоду. Благодаря своим практичным свойствам, он может стать родоначальником целой новой разновидности экологически чистых терморегулирующих материалов.

47 КОММЕНТАРИИ

  1. These methods are safer, sustainable, and effective when practiced persistently.
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    site. Anabolic steroids are classed as performance and image-enhancing drugs (PIEDs) .

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    Many users have also reported major depressive symptoms and sleep issues – significantly in periods of abstinence after intense use 83, eighty four.
    In reproductive goal tissues, testosterone may be thought-about to be a
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