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Electric dryers are very power-consuming. According to statistics from the Australian Energy Agency, the amount of electricity consumed by a dryer to run a cycle is 15 times that of a washing machine cycle.
Australia is sunny and has a relatively dry climate. Therefore, the use of dryers is not universal, but the situation in the United States is different.
In many areas of the United States, the climatic conditions are not suitable for outdoor clothes drying and are considered “estheticâ€. Some areas even prohibit the establishment of drying racks. Therefore, the electricity consumed by the United States using dryers accounts for a large part of the country's total electricity consumption and is therefore a major contributor to greenhouse gases.
A group of students at the California College of Engineering is studying a system that uses solar energy or thermal energy in the attic to dry clothes, which can save 16% on electricity bills.
The design principle of the system is: installing a solar fan in the attic, blowing the solar hot gas of the rooftop solar collector (or solar hot gas in the attic) into a box that is 76 centimeters deep and 2 centimeters wide and wide. Dry your clothes. When it is not necessary to dry clothes, these hot air can be introduced into the ventilation ducts to provide room heating during the colder months.
The cost of this system is $1,500, which is much higher than that of ordinary dryers. However, these students estimate that if they only use this system to dry clothes in 20 years, they can save about 6,500 US dollars, if they use it for indoor heating, In 20 years, it will save 8,700 US dollars.
The team received US$15,000 in funding support from the U.S. Environmental Protection Agency and is conducting further research.
Source: Shouju Energy Chen Fangyuan translated from Energy Matters
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