Methanol economy advantages compared to a hydrogen economy: 1  Efficient energy storage by volume, as compared with compressed hydrogen. 2  A liquid hydrogen infrastructure would be prohibitively expensive. 3  Can be blended with gasoline (for example in M85, a mixture containing 85% methanol and 15% gasoline). 4  User friendly.
Two things contribute to air pollution that can cause an air quality alert: 1  Ground-Level Ozone â High-levels of ground-level ozone are frequently the cause of air quality alerts. 2  Particulate Matter â Particulate matter consists of pollutants such as dust, soot, ash and wood smoke.
Noise is one of the most common reasons for dissatisfaction with a window air conditioner (A/C). Most people would prefer a quiet air conditioner, but when you're shopping for one, it's not easy to tell how noisy a given model will be.One reason is that noise measurements (decibel readings) are rarely included in manufacturers' product literature.o further complicate matters, there are different kinds of noise that an air conditioner might make: If you are looking for a quiet window air conditioner to buy, check out these brands and models that are recommended for low noise.