def KJKGtoBTULB(hkjkg):
    """
    Convertie l'enthalpie en kJ/kg vers btu/lb
        Conversion: 1 kJ/kg = 0.429923 Btu/lb
    :param hkjkg: Enthalpie [kJ/kg]
    :return hbtulb: Enthalpie [btu/lb]
    """
    hbtulb = hkjkg * 0.429923
    return hbtulb