A breath of fresh air in the depot
Page 41
If you've noticed an error in this article please click here to report it so we can fix it.
A MECHANICAL ventilation system em ploying Brooks input units and HiVolume extract units has been installed at the Laird Street bus depot of Birkenhead Corporation Transport to avoid the build-up of heavy diesel exhaust fumes.
The build-up starts at 4 a.m. and continues until 8 a.m. when 40 maintenance men come on duty. During this warming-up period as many as 120 bus engines might be running in the depot.
The garage has a natural ventilation system for normal use, but powered ventilation is essential in the maintenance area where 13 pits are sited.
Three Brooks input units are mounted immediately over the pits and adjacent to the perimeter wall. These discharge tempered air into the pit area at a total rate of 18,600 Cu. ft. a minute.
Each of the units is fitted with a low-pressure hot-water battery giving a temperature rise to the incoming air of 35°F when required to avoid cold draughts.
Extract from the surrounding area is by six Brooks Hi-Volume extract units each with a duty of 16,200 Cu. ft. minute, equivalent to 2+ air changes per hour. Contractors for the ventilation system were Humber Heating Co. Ltd., Hull.
Garage shock: Edinburgh Corporation Transport's new central garage in Annandale Street is to cost £50,000 extra because of difficult site conditions, making the total £314,575.