Measurement error analysis of heat transfer in water side of a surfacetype heatexchanger testbed

Presents the principle of the error analysis. Deduces a formula of measurement error for heat transfer in water side for surfacetype heatexchangers. Discusses the major factors influencing the maximum permissible error of the test instrumentation. Analyses the influence of water temperature and pressure measurement on heat transfer in water side. Stresses that the key factor of reducing the measurement error is water temperature measurement of inout pipe of heat exchanger.