Hi there,
If you are having a problem with a power resistor getting too hot and being a burn risk for humans or something like that, you can also use more than one power resistor to distribute the heat across a much larger surface area and thus reduce the maximum temperature.
For example, if you need a 2 ohm 10 watt resistor, you can use two 1 ohm 10 watt resistors in series, which will give you twice the surface area which will reduce the temperature rise by about half. In this way if one resistor got up to say 75 degrees C then two resistors would get up to only about 50 degrees C (25 deg C ambient).
Alternately, two resistors in parallel of twice the ohmic value and both of the same original wattage.
Of course more resistors would be even better.