def METHOD_NAME(self, model):
    """
    Add step changes in air temperature similar to the example in the docs
    """
    model.fs.unit.initialize()
    # Add disturbances
    for t in model.fs.time:
        if 300 <= t < 600:
            model.fs.unit.shell_inlet.temperature[t].fix(288.15 - 10)
        elif 600 <= t < 900:
            model.fs.unit.shell_inlet.temperature[t].fix(288.15)
        elif 900 <= t < 1200:
            model.fs.unit.shell_inlet.temperature[t].fix(288.15 + 10)
        elif t >= 1200:
            model.fs.unit.shell_inlet.temperature[t].fix(288.15)
    # Transient solution
    solver.solve(model)
    times = [0, 300, 600, 900, 1200, 1500]
    sco2_exp = [305.2, 304.9, 305.1, 306.5, 305.7, 305.2]
    air_exp = [370.4, 373.1, 370.3, 365.9, 370.7, 370.4]
    wall_exp = [339.4, 338.7, 339.1, 340.7, 339.9, 339.4]
    self.check_temperatures(model, times, sco2_exp, air_exp, wall_exp)