Placing them far away from where we need heat C. Turning them off when not in use D. Using them in large open spaces 相关知识点: 试题来源: 解析 C。本题考查电暖器节能方式。选项 A,保持在最高温度会消耗大量能源;选项 B,把电暖器放得离需要加热的地方远达不到加热效果且浪费能源;选项 D,在...
Currentenergy-efficient modelstypically won’t raise your electric bill by much. Can also be used inside the house if needed. No ventilation required. Can take longer to heat up a garage than other options. Might be difficult to use in garages with few outlets. ...
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Although tankless water heaters cost a lot initially, they’re also extremely energy efficient, reducing your monthly energy bill. Are electric water heaters good? Electric water heaters are extremely popular in part because of their low upfront cost. However, an electric water heater has ...
Electric room heater As their name suggests, electric room heaters are powered by electricity. Some of them can be rather fancy and energy-efficient. For example, some electric heaters come with built-in thermostats and can be programmed to work only when the temperature drops below a certain ...
When using or storing oxygen, keep oxygen at least 10 feet away from open flames and other sources of heat. Oxygen cylinders and tubing require the same consideration. Remember, electric appliances like toasters, space heaters, hair dryers, electric blankets, and electric razors have the potentia...
For many, they strike the perfect balance between cost and performance, and they tend to be more efficient on environments where power fluctuations happen frequently. The Double-conversion UPS The double-conversion UPS offers the highest level of power protection. It does this by completely ...
Maximize natural light: Take advantage of natural light during daylight hours. Open curtains or blinds to illuminate your space without using electric lights. Consolidate refrigeration:If you have more than one refrigerator or freezer, consolidate items into one to keep it fuller and more efficient....
Electric heating An ENERGY STAR heat pump could save on heating costs and provide cooling in summer too. They are more energy efficient than electric furnaces and baseboards because instead of producing heat, they extract heat from the air and transfer it where it’s needed. You cancompare est...