An AC system has many components: compressor, condenser, receiver dryer, evaporator, and hoses. The compressor, the âheartâ of the carâs air conditioning system works like a pump taking refrigerant, (R-12 in older cars, R-134a in 1995 and newer cars) and pressurizing it, passing it along to the evaporator. The AC compressor has several moving parts (including pistons and valves).
Quick Answer. According to WebMD, a normal blood pressure is lower than 120/80. This means that the systolic number is 120 or lower, and the diastolic number is 80 or lower. The systolic number measures artery pressure when the heart contracts. The diastolic number measures artery pressure between heartbeats.
If an individual's sustained blood sugar falls below 55 milligrams per deciliter (mg/dL) or measures higher than 180mg/dL, he is considered to have dangerous blood sugar levels. Normal blood sugar levels typically range from 82 to 110mg/dL, but these tend to fluctuate when an individual eats or forgets to eat.