We are replacing a roof top Air Conditioner. The 12 story high rise bldg is 35 yrs old and was designed to have pressurized corridors/hallways.
Presently, due to age, etc, the bldg is not pressurized.
The engr wrote a spec for the replacement AC. He use desig conditions of inlet air to...
We are replacing a split AC system (25 yrs old) for the lobby of our condominium bldg. Capacity is approx. 7.5 tons.
I asked the hired engineer to consider a 2 speed AC motor or 2 stage compressor in his specification so that we could then evaluate the higher initial cost vs long term savings...
Presently the lobby of our building is cooled by a 10 ton Air Conditioner --- the compressor and condenser are located about 150 ft from the bldg. An inside air handling unit with and evaporator is located in the bldg. Air conditioner compressor, evaporator, etc are about 30 yrs old and are to...
