| 摘要 |
<p>A heater system is provided for a railway car making the car adaptable to use waste heat from an auxiliary power unit or heat from an electrical heater while still utilizing many of the same conduits and temperature responsive means within the car. When the waste heat from the auxiliary power unit is not used or provides insufficient heat from the car, electric heaters are switched into operation to either provide all the heat or to supplement the heat from the auxiliary power unit.</p> |
