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.
2. Blood pressure and heart rate have ânormalâ target numbers. False: There are guidelines, but whatâs normal varies from person to person. Optimal blood pressure typically is defined as 120 mm Hg systolic â which is the pressure as your heart beats â over 80 mm Hg diastolic â which is the pressure as your heart relaxes. For your resting heart rate, the target is between 60 and 100 beats per minute (bpm).