Open AccessAn experimental investigation on parallel-plate finned heat exchanger working with cryogenic oscillating helium flow
Author(s) -
Jiale Huang,
Tao Jin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/755/1/012050
Subject(s) - mechanics , nusselt number , heat transfer , heat exchanger , reynolds number , thermodynamics , plate heat exchanger , materials science , plate fin heat exchanger , regenerative heat exchanger , cryocooler , heat transfer coefficient , dynamic scraped surface heat exchanger , micro heat exchanger , flow (mathematics) , critical heat flux , physics , turbulence
The space-cycle averaged Nusselt number is used to characterize the heat transfer characteristics of cold end heat exchanger in cryocoolers working with cryogenic oscillating helium flow. An experimental setup for cryogenic oscillating flow heat transfer measurement was designed and established. According to the experimental data obtained, it is evident that low temperature is significantly disadvantageous for heat transfer in oscillating flow. Similar to the experimental results at room temperature, under different mass flow rates, the heat exchanger has its own corresponding optimal Reynolds number at certain temperature for maximized heat transfer capacity.