The exhaust ducting is cooled by four air inlets around the jet pipe. 排气管道被四个围绕喷射管道的进口空气冷却。
Chapter 21, Air Cooling and Dehumidifying Coils, has expanded coil construction descriptions and new maintenance recommendations. 第二十一章，空气冷却和除湿盘管，扩展了盘管结构的描述和新的维护推荐。
