Thermal Test of a Sealed Air Cooling Local Environment Control Apparatus for Precision Instruments

Hong Cai Li; Fei Fan Chen; Yong Gui Dong

doi:10.4028/www.scientific.net/AMR.468-471.1099

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 468-471Thermal Test of a Sealed Air Cooling Local...

Thermal Test of a Sealed Air Cooling Local Environment Control Apparatus for Precision Instruments

Abstract:

A sealed air cooling local environment control apparatus that can provide constant working environment for precision instruments has been developed. Based on electrical analogy, the thermal network model has been derived, and the parameters of thermal conductance and capacitance in the model were measured in different test conditions. The obtained maximum relative errors between the measured values and the theoretical values are in the range of 0.6% to 6%, which indicates that the proposed theoretical model and the test method are feasible. The obtained parametes can help to understand the heat transfer properties of the apparatus, and the methods can be also as the reference for the test and rapid commissioning of other local environment control apparatus.