STEAM HEATING FROM THE LOCOMOTIVE.

STEAM HEATING FROM THE LOCOMOTIVE.

The committee on car heating at the last convention of the Master Car Builders’ Association reported the results of thirty-three practical tests of eighteen different systems of heating, all of them using steam from the locomotive. The reports did not cover any scientific tests of the amount of steam used and for the most part covered only short tests. The main results have been thus summarized by The Engineering News :

12个系统使用直接辐射的蒸汽，其中四个使用间接辐射;三个系统使用蒸汽与面包师加热器连接加热水;两者使用从水的直接辐射，这意味着相同的东西。五种系统在汽车内部有主管，所有其他地板。一个系统（威斯康星中心）在汽车下面的冷凝器处置凝结水;两（宾夕法尼亚州R.和R.和自动耦合器和加热公司）通过将其返回机车，并通过陷阱所有的休息。该温度由调节阀控制，在六个，八个，八个，自动注意力中持续两次，六个，一定程度的重点，在一个（C. M.和St.）中的一个（每次旅行的一次调整“中，它们需要持续。可以在这些报告中放置不多依赖;例如，一个在不同的道路上测试的两个系统被一个需要“不断的”注意力，另一个是需要“很少”。至关所有这些的事实可能是他们需要频繁地关注普通加热器，而自动恒温阀可以在其中附接到任何一个。 None of the heaters employ any other resort for occasional heating without the locomotive except the Gold, which has a drum filled with brine. As a rule the pressure is low, not exceeding ten pounds. It appears to take from thirty to sixty minutes to heat a car to seventy degrees when outside temperature is twenty degrees, but the reports on this head are very unreliable. The ordinary brass and iron expansion steam trap is the one almost universally used ; only one uses a float trap (N. W. Car Heating and Lighting Companj-). Steam must be wasted through the rear coupling, according to the reports in seven, need not be in eight, responses are divided in two (as there probably would have been for others, had there been more tests of them), and there is no response for one. The flexible connection between cars is rubber hose in thirteen, two of which use corrugated rubber; metallic couplers are used in five. The metallic connections seem to be a rather weak point. The pith of the whole elaborate abstract and report, apart from the easily ascertained mechanical details of each, some of the statements as to which should be received with reserve, is contained in the following condensed abstract of “general results:”