. Electric railway journal . aves Money The use of thermostatic control for regulating theelectric heaters of cars has produced a large observations taken in actual service have shownthat this saving amounts to 30 to 40 per cent of thetotal power used for heating in some cases. The hea^ njinm from the passengers/L^rlf bodies aids in heat-ing the cars morethan is usually sup-posed. A crowdedcar is many degreeswarmer than anempty one consum-ing the same cur-rent. During the rushhours cars travelingin one direction areusually crowdedwhile those going inthe opposite direc-tion are c
. Electric railway journal . aves Money The use of thermostatic control for regulating theelectric heaters of cars has produced a large observations taken in actual service have shownthat this saving amounts to 30 to 40 per cent of thetotal power used for heating in some cases. The hea^ njinm from the passengers/L^rlf bodies aids in heat-ing the cars morethan is usually sup-posed. A crowdedcar is many degreeswarmer than anempty one consum-ing the same cur-rent. During the rushhours cars travelingin one direction areusually crowdedwhile those going inthe opposite direc-tion are compara-tively empty. These varied conditions can be met suc-cessfully only by having an accurate automatic controlof the heaters. The heating current load, occurring asit does during the winter months when both the lightingload and the power load are increased considerably, isworth more than its proportion of the total cost ofpower. The top of the peak costs most and any re-duction in heating current decreases the peak High-grade maintenance will assuresavings expected from new equipment March 16, 1918 Electric Railway Journal 507. Ventilated Motors During a Strenuous Winter Neglected Commutator Coversof Old Motors Gave MoreTrouble Than Clogged DrainHoles of Ventilated Type—TheLatter Motors Can Be Pro-tected by Snow Shields, BetterInsulation, Etc. THE great amount of troubles and breakdownsexperienced during the very severe winter seasonof this year, in connection with car equipments,naturally suggests the following questions with regardto the motors: 1. To what extent is the introduction of the ven-tilated type of railway motors responsible for break-downs ? 2. What can be done with regard to operation andmaintenance to avoid a recurrence of the recent expe-riences in connection with the motors? 3. Is the ventilated motor a practical propositionand is it destined to survive? To get an answer to the first of these questions, anumber of the writers associates visited a
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