Wind turbines convert wind energy to electricity for distribution. Conventional horizontal axis turbines can be divided into three components: 1  The rotor component, which is approximately 20% of the wind turbine cost, includes the blades for converting wind energy to low speed rotational energy.
Rating Newest Oldest. Best Answer: In the blood bank they normally seperate the blood according to Group & Cloatting time as it varies from person to person. Generally those blood kept stored under minus 4 deg cel can stay for a period of 90 days for transfusion provided the temperature is maintained all the time. Before transfusion the stored blood with its pack will be left in closed conainer having salt water to return to normal liqiud stage.
Freezing extends the dating period or shelf-life for these blood units. How long can frozen blood be stored? Frozen blood can be stored for 10 years from the date of blood collection. How is blood kept âaliveâ during the freezing process? A special cryoprotectant chemical is added to the blood cells. This chemical, glycerol, permeates the red blood cell membrane so that there is about as much glycerol inside the cell as outside the cell, and it displaces much of the cellâs water.