I have a problem with the expression

Here I want to know if you can understand the following expression or how do you make it better?

the heat-radiation of the machine is very bad (heat will be produced while the machine is working but speaking of heat-radiation, it is so bad that the heat has almost damaged the machine.)


can you understand the word ' heat-radiation ' in this sentence?

or do you think ' heat dissipation ' is the better one?

many thanks from c Jijia

...i think you would probably go with "heat radiation"; "dissipation" sounds less like the sort of thing that might interrupt or damage the functioning of the machine (i.e. "dissipation" sounds more like a relatively harmless by-product).

you have a problem with the machine, not the expression

It's not entirely clear what the situation. If the machine is producing too much heat, then you should make that clear. If the problem isn't that the machine produces too much heat, but there isn't sufficient cooling, you should make that clear. Also, just saying that something is "bad" isn't necessarily clear; someone not familiar with the machine might not know if "bad" means too much heat or too little.

Yeah, "heat-radiation" wasn't immediately clear to me in the first example. Dissipation or heat conduction might be better options.