22/03/2015
" Be friendly to environment, Environment will be friendly to you"
Friends, as the summer is approaching fast, we very soon are going to suffer from the hot weather of the sindh, so to protect your self from the coming hot weather here are some tips:
1. Reduce the cooling load by employing cost-effective conservation measures.
2. Over most of the cooling season, keep the house closed tight during the day.
3. You can help get rid of unwanted heat through ventilation if the temperature of the incoming air is 77 F or lower.
4. Use ceiling fans to increase comfort levels at higher thermostat settings.
5. In hot climates, plant shade trees around the house. Don’t plant trees on the South if you want to benefit from passive solar heating in the winter.
6. If you have an older central air conditioner, consider replacing the outdoor compressor with a modern, high-efficiency unit.
7. If buying a new air conditioner, be sure that it is properly sized.
8. Buy a high-efficiency air conditioner: for room air conditioners, the energy efficiency ratio (EER) rating should be above 10; for central air conditioners, look for a seasonal energy efficiency ratio (SEER) rating above 12.
9. In hot, humid climates, make sure that the air conditioner you buy will adequately get rid of high humidity.
10. Try not to use a dehumidifier at the same time your air conditioner is operating.
11. Seal all air conditioner ducts, and insulate ducts that run through unheated basements, crawl spaces, and attics.
12. Keep the thermostat set at 78 degrees F or higher if using ceiling fans. Don’t air-condition unused rooms.
13. Maintain your air conditioners properly to maximize efficiency.
Additional tips from the Real Goods Solar Living Sourcebook, edited by Doug Pratt and the Real Goods staff.
Warm Weather Window Solutions
14. Install white window shades or mini-blinds. Mini-blinds can reduce solar heat gain by 40-50 percent.
15. Close south and west-facing curtains during the day for any window that gets direct sunlight. Keep these windows closed, too.
16. Install awnings on south-facing windows, where there’s insufficient roof overhang to provide shade.
17. Hang tightly woven screens or bamboo shades outside the window during the summer to stop 60 to 80 percent of the sun’s heat from getting to the windows.
18. Apply low-e films.
19. Consider exotic infills in your windows, a new technology that fills the space between panes with krypton or argon, gasses that have lower conductivity than air, and which boost R-values.
Tips for your A/C
19. Provide shade for your room A/C, or the outside half of your central A/C if at all possible.
20. Clean your A/C’s air filter every month during cooling season. Normal dust build-up can reduce air flow by 1 percent per week.
22. Turn off your A/C when you leave for more than an hour.
23. Several studies have found that most central air conditioning systems are over sized by 50 percent or more.
