Best Answer: BTU is an old fahioned term British Thermal Units and was used to calculate the amount of energy required to raise the temp of a room by a degree (using Therms as a unit here too), and is uses an energy calculation rather than a straight how much air does it push sort of calculation.est Answer: BTU is an old fahioned term British Thermal Units and was used to calculate the amount of energy required to raise the temp of a room by a degree (using Therms as a unit here too), and is uses an energy calculation rather than a straight how much air does it push sort of calculation.
Buses that primarily operate service within the city, but are not limited to this area. Local bus service varies depending on the route, but many run seven days a week and nearly 24 hours a day.
Greyhound Bus Lines offers about 6 one-trips each day from Dallas to Atlanta. The trips vary in length depending on the exact route and number of stops. They range from about â¦ 17 hours to 22 hours. For exact schedules visit www.greyhound.com Note that there are several stops in and around Dallas.