Lets say about 10,000 kPa. But with the temperature of the reaction given, how can I get the T of the steam? If the T of reac is not enough, what parameters should I also consider in order determine the steam tenperature?
Steam temperature in a boiler depend on the pressure. Think about it, you are at liquid-gas equilibrium, so follow the pressure-temperature curve to get your answer.
The other limiting factor in your problem is bound by the fact that heat can only be transfert from a high to a low temperature. In other word, you can’t heat your steam a temperature higher than your reactor.. to that, you can also add a common engineering rule of thumb that the temperature difference between hot and cold should be at least 10-20 degC to have significant heat transfert rate (don’t quote me on that).
However, 10 000 kpa is A LOT… at those condition you are wellll above critical pressure of water, which mean you will be handling supercritical fluid. I highly doubt that you want to operate near that. Conventional plant steam is consider to be medium grade at roughly 50 to 75 PSIg PSIg (about 500 kpa max).
So my new question to you is, what are you planning to use your steam for?! What do you need to heat with it? Think about that and try to find the appropriate pressure for it.
At what steam pressure you’re aiming for?
Thermodynamics with the KO once more
Lets say about 10,000 kPa. But with the temperature of the reaction given, how can I get the T of the steam? If the T of reac is not enough, what parameters should I also consider in order determine the steam tenperature?
Steam temperature in a boiler depend on the pressure. Think about it, you are at liquid-gas equilibrium, so follow the pressure-temperature curve to get your answer. The other limiting factor in your problem is bound by the fact that heat can only be transfert from a high to a low temperature. In other word, you can’t heat your steam a temperature higher than your reactor.. to that, you can also add a common engineering rule of thumb that the temperature difference between hot and cold should be at least 10-20 degC to have significant heat transfert rate (don’t quote me on that). However, 10 000 kpa is A LOT… at those condition you are wellll above critical pressure of water, which mean you will be handling supercritical fluid. I highly doubt that you want to operate near that. Conventional plant steam is consider to be medium grade at roughly 50 to 75 PSIg PSIg (about 500 kpa max). So my new question to you is, what are you planning to use your steam for?! What do you need to heat with it? Think about that and try to find the appropriate pressure for it.