ASME PTC 4.3-1968 pdf - Air Heaters

ASME PTC 4.3-1968 pdf -  Air Heaters 空气加热器
This Code for air heater testing guides the preparation of tests, data collection, and the computation of test results. It defines an air heater as a heat exchanger that facilitates direct heat transfer from combustion gases to combustion air without the use of an intermediary heat transfer fluid.