I think the reason you may be getting so much heat out of the HPS bulb is because you don't have it in a glass enclosed fixture. Iff you have it as just the bare bulb under a reflector "wing" then you will get much more radiant heat because of the intensity of the light. Think off the light as water being sprayed out of a nozzle. The cfls may be putting out 20ltr per second but the pressure of the water being sprayed is less. Where the HPS or MH (both are HID, High Intensity Discharge) you could be putting out the same 20ltr per second of water, but it has 5-10x the pressure. If you think about water spraying on your skin at a given flow with low pressure, it is not uncomfortable, but increase the pressure of the same flow to 5x or 10x and it will get painful when it hits you.
That is the way radiant energy works. By emitting the light at a much higher pressure, the HID lights super charge the light energy coming out of the bulbs.
Now with the CFLs, Those are really good bulbs that you have (I have researched them before) but if you notice in pictures, they are super bright on the inside of the circle that is formed by the bulbs but not as bright outside. That is because only half off the light generated by those tubes is getting pushed out. the other half is getting trapped within that circle. So the lumen output by the bulbs is true, but only 2/3-3/4 is getting out to the viewer or to the plants. (and because it is not being pushed as hard as the HID lights) the intensity that you can feel isn't as bad.
With the T5 tubes and the HID bulbs, the light is able to escape from all the way around the bulbs so that you get all of the lumens put out as non are being trapped within multiple tubes that are sitting back to back with each other in a circle.
Now if you get a sealed glass fixture/reflector hood for your light, then connect a fan to it so that fresh air is pulled through and around the bulb, it will not feel anywhere near as hot. This is because some of the intensity is lost to both the cooler air passing through the fixture and around the bulb, and some is lost to the glass fixture.
THG is correct that regardless of the type of lights you use, you really need the type of fan that will work like a vacuum to pull air rather than just a regular "bladed" fan that pushes air. You need to connect this "vacuum" type of fan so that it pulls the air out of the grow space and force it out through the opening, then the vacuum pressure created in the space will pull fresh air into the grow space. This is vital to the plants even if heat isn't an issue because they need fresh air like we do. I hope this helps