An experimental study of heat transfer in liquid coolant nitrine flowing in narrow annular channels

The experimental results are reported on heat transfer in a liquid nitrine medium flowing in narrow annular channels (d1/d2=0.76 and 0.84) at the following parameters: Re(4.6-22.0)x103 Tsub(L)=288-346 K; P=20-80 bar; q=(0.1-0.5)x106 W/m2; Pr=3.5-5.0. Good agreement of experimental and estimated data confirms the possibility for liquid nitrine to use existing dependences recommended for heat transfer evaluation with the flow of conventional liquids in annular channels