THERMOPHYSICAL PROPERTIES OF ALTERNATIVE FUEL IN A WIDE RANGE OF PARAMETERS

Abstract

In the presented article, butanol-1 and diesel B0 fuel are degassed in special flasks and their purity is checked using a Karl Fischer 756 KF titratron. Then binary mixtures are prepared in appropriate mole fractions xb-1=(0.0, 0.1773, 0.3493, 0.5514, 1.0) or Vb-1=(0.0, 7.0, 15.79, 30.04 and 100.0)% )in volume percentages by using special connected flasks. Two different static devices with high accuracy were used to measure the saturated vapor pressure of butanol-1, diesel B0 fuel and their binary mixtures [8]. Glass gauge sockets (3, 4, 27) are used to measure saturated vapor pressure at subatmospheric pressure and temperature T=(274.15÷323.15) K (Fig. 1). The metal gauge socket is used to measure the saturated vapor pressure at temperatures T= (323.15÷473.15)K (Fig. 2). The experimentally obtained results of saturated vapor pressure of butanol-1 and diesel B0 fuel mixtures were fitted to analytically by means of Clausius-Clapeyron type equations.Experiments to measure the isobaric heat capacity cp/(C·kg-1·K-1) of butanol-1, diesel B0 fuel and their mixtures at atmos-pheric and saturated vapor pressures were measured in a Pyris 1 type differential scanning calorime-ter (Fig. 4) [10] . The measuring chamber is resistant to a temperature of T=573.15 K and a pressure of 24 bar. Measurements were carried out at temperatures (263.15÷468.15) K, atmospheric p=0.101 MPa and saturated steam pressures Ps/MPa. The experimentally obtained results of heat capacity of butanol-1 and diesel B0 fuel mixtures were analytically written by means of an empirical polynomi-al equation.