def radiative_heat_transfer_coefficient_simplified_winter(effective_emissivity: float) -> float:
    """
    放射熱伝達率[W/(m2・K)]の計算（簡易計算、冬期条件）

    :param effective_emissivity: 有効放射率, -
    :return:                     放射熱伝達率, W/(m2・K)
    """
    return 5.054 * effective_emissivity