The net work of the cycle is defined by the difference between the turbine work and the pump work: If the pump work is neglected, the net work of the cycle reduces to: Then the thermal efficiency of this system is defined by the rate between the net work and heat transfer from the boiler: Air-Fuel ratio and Air Excess.
At The Airport Valet, we believe that you should only tip commensurate with the service you receive. That said, currently the average tip is $3.00 - $5.00 on both departure and arrival. However, daily our valetsâ tips do range from as low as $1.00 to as high as $30.00.
â¢ Valet parking staff. Don't tip a hotel staff member who opens a guest's car door at the hotel entrance or parks the car in a valet lot. The valet who retrieves the car from the parking lot should be given $2 to $5. â¢Bellmen. The common tip is $1 to $2 per bag.