The refrigerant gas is then compressed to a higher pressure by a compressor or a generator, converted back into a liquid by rejecting heat through a condenser and then expanded to a low-pressure mixture of liquid and vapor that goes back to the evaporator section. The cycle is repeated.
You should tip a taxi driver around 10% of your taxi fare. The taxi driver should usually help you load and unload the bags. When you approach the airport, there are porters, called skycaps, who can help with the bags. You should tip them $1 or $2 per bag. You do not tip the flight attendant, employees at the ticket counter, etc. If you need wheelchair assistance, you should tip at least $5 per passenger. At other places like a rental car center, you should generally tip $1 or $2 to whoever helps you with your bags. When you reach the hotel, you should tip $1 or $2 per bag to the bellboy or doorman who handles your bags.
Many of these drivers do provide great service, so for those drivers, here are some suggested tips. Overall 93.3 percent of our surveyed staff recommended giving some type of tip, 71 percent suggested a tip of 15 percent or less of the fare. Another 21.7 percent suggested a tip of between 15 to 20 percent of the fare. And a final 7.3 percent said they don't tip the taxi driver.