Specific features of heat transfer and aerodynamics in the "boiler room" type scheme gas turbine air heaters (using as an illustration the gas turbine air heater for 16Mw regenerative GTE)
Updating of the Ukrainian gas transport system requires replacement of existing gas-pumping units (GPU) for more economic ones. High efficiency of the new generation of GPUs is provided by the regenerative air heater (AH) which is a part of its gas-turbine drive (GTD), the regeneration ratio of AH is E=85% and the total relative pressure loss in its paths is ΔrΣ=4.0%. Implementation of these parameters is largely determined by the AH design. The desire to provide high compactness AH by an artificial tube matrix sealing can lead to an increase in weight and size parameters and decreasing the efficiency of GPU due to a negative impact on heat transfer and the aerodynamic resistance of AH adopted by the draft "boiler room "scheme for its matrix arrangement.