tailieunhanh - Energy Management Handbook for Homeowners phần 4

EnergyGuide Nhãn Khi bạn mua sắm cho một thiết bị lớn, hãy tìm nhãn EnergyGuide màu vàng và màu đen (xem trang 9) có thể giúp bạn lựa chọn mô hình hiệu quả nhất mà bạn có thể đủ khả năng. Thiết bị ghi nhãn đã được Quốc hội uỷ quyền như là một phần của chính sách năng lượng và Đạo luật Bảo tồn năm 1975. Nhãn phải được hiển thị trên bảy | Moisture Steps to Reduce Excessive Humidity Recognize that the best way to stop condensation is to reduce the moisture in the inside air. Eliminate or reduce any sources of moisture in your home that you can control. 1. Be sure that attic or crawl spaces are properly ventilated. Add a vapor barrier to cover the earth in the crawl space. 2. If you have single-pane windows install storm panels double-pane insulating glass or triple-glazed panels. 3. In winter provide more controlled ways for moist inside air to get out. Run kitchen and bathroom ventilating fans during periods of moisture production. 4. Vent your clothes dryer to the outside. 5. Address water problems such as seepage from the outside leaks in a roof or walls and leaky pipes. Moisture Production Source Water Vapor Produced Human respiration by an average family of four 8 to 12 pounds in 24 hours Cooking for an average family of four on a gas range 5 pounds per day Showering 1 2 pound per shower Tub bath 1 8 pound per bath Clothes drying 1 pound of water per pound of dry clothes if dried inside or dryer is not vented Living plants About the same produced in watering the plants Unvented gas heater each 100 000 Btus or each therm 8 to 10 pounds Humidifier Nameplate rating of unit Be Careful When Installing Insulation Excessive moisture in the home filters through insulation and causes it to become damp and matted and to lose much of its effectiveness. To prevent or reduce condensation problems the side of the insulation exposed to high vapor pressure warm side in winter must be covered with material that will impede the natural drive of moisture to flow through the inside surfaces of exterior walls toward the lower vapor pressure outside. To be effective such a material must have a high resistance to moisture flow. The material is usually called vapor barrier or vapor retarder. New Construction Choose wood or vinyl-sheathed wood rather than metal for windows and gliding doors. This will reduce the .