Consider a centrifugal blower that has a radius of em and a blade width of 8.2 cm at the impeller inlet, and a radius of 45 cm and a blade width of 5.6 cm at the outlet. The blower delivers air at a rate of 0.70 m3/s at a rotational speed of 700 rpm. Assuming the air to enter the impeller in radial direction and to exit at an angle of 50° from the radial direction, determine the minimum power consumption of the blower. Take the density of air to be 1.25 kg/m3.
RESPIRATORY PHYSIOLOGY Example exam question: You’re driving your horse to a race, and there is a hole in the trailer near the exhaust pipe. By the time you get to the horse race, you open the door and what happens (There will be a wreck and the horse will bleed out, this will involve the cardiovascular system) o The horse falls out dead. The major function of the respiratory system is the exchange of gases. o Two major gases we exchange are carbon dioxide and oxygen. o We are dependent upon the concentration of the gases in the air we breathe (the atmosphere.) If the concentration changes, that disrupts the respiratory system. Going up really high, there’s not much oxygen. We are dependent on a certain threshold amount of oxygen, and without it you go unconscious. You need oxygen in the electron transport chain to pull electrons off of the third complex. Without it you stop producing ATP, and your nervous system collapses. BRONCHIAL TREE Alveoli- Air sacs where gas exchange occurs. In all species. Continuous with the atmosphere. On the other side is a dense net worth of capillary beds. This brings the atmosphere in proximity of the cardiovascular system so gas exchange occurs. In most mammals, there are 23 branches of the bronchial until you reach the very bottom aspect of the lung. G