T2* decay is of much greater magnitude than T2 in tissues and results in more rapid signal loss as compared to the T2 relaxation.If one had a perfectly uniform magnet and an object without susceptibility effects, the T2 and T2* would be equal.he relationship between T2 and T2* can be illustrated by the multiecho spin echo sequence shown in Figure 2. The 180 degree RF pulses used to generate the echo are rephasing the spins that have undergone T2* decay. The gradual decline in signal from subsequent echos reflects T2 decay.
At 15 kWh, trading in a pre-1986 fridge for a new efficient one would save about $158 a year in electricity costs. And some older fridges are even worse than the average. One reader estimates her savings to be $238 per year for trading in her 1979 fridge for a 2004 model.ridge should be 36-40F, and the freezer should be 0-5F (-17 to -10C). Fridges set 10 degrees lower than needed (or freezers set 5 degrees lower than needed) can increase energy use by as much as 20-25%. Personally, I set my own fridge to 56 because as a vegan I never store super-perishables like meat or dairy.
My 3,000 square foot home uses about 2,000 kilowatt-hours (kWh) of electricity each month. Iâve been at a customerâs 2,500 square foot home that uses 3,500 kWh of energy! That would be a range of 0.67 â 1.4 kWh per square foot per month â hardly a useful range to use as a rule of thumb.Energy use is complicated.People have very different habits, standards of living, and luxuries. I was at a customerâs home where they had two refrigerators in the garage. get asked this question (how much solar do I need for my xxxx sqft house) all the timeâ¦glad to know I am not the only solar sales guy who canât give an easy answer! I am using 1900 Kwh per month in March. The average use per day is 65 Kwh. I have 3Kwh worth of panels on my roof in South Florida facing south.