کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
786999 | 1466434 | 2013 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thermal conductivity of ammonia + water mixtures over a wide range of concentrations Thermal conductivity of ammonia + water mixtures over a wide range of concentrations](/preview/png/786999.png)
The thermal conductivity of NH3 + H2O mixtures (with 0.1–0.5 mass fraction ammonia) was measured at temperatures between 293.15 K and 313.15 K using a transient hot-wire apparatus. The apparatus and method were validated by comparing the measured values of the thermal conductivity of pure water and water + lithium nitrate mixtures with published values. Uncertainty in the measurements was estimated to be less than 0.017 W m−1 K−1. The thermal conductivities of NH3 + H2O mixtures were compared with the literature values and also fitted with several well-known models.
► A transient hot-wire apparatus was designed and set up, and was validated with pure water and water + lithium nitrate.
► Thermal conductivity of ammonia–water, between 293.15 K and 313.15 K and 0.1–0.5 ammonia mass fraction, has been measured.
► Measured thermal conductivities of ammonia–water mixtures were compared with literature values.
► The experimental data were fitted to two well-known models and both models are able to correlate the data equally well.
Journal: International Journal of Refrigeration - Volume 36, Issue 3, May 2013, Pages 998–1003