What happens when liquid nitrogen is kept at a constant temperature of around 60 degree Centigrade ?
Liquid nitrogen boils at -192 C under 1 atmosphere pressure. To have liquid nitrogen at 60 C, it has to be in under substantial pressure. I have not done the calculation but I suspect we are talking of 20 – 50 atmospheres so the walls of the pressure vessel need be very thick and very strong – and again I have not done the calculation for the container either. With the container and the liquid nitrogen inside it under high pressure inside a 60 degree C chamber all the contents remain at 60 degrees C. You need to maintain the chamber temperature at 60 C. Because room temperature is 20 C, your chamber would be insulated and heat needs to be added to off set the heat loss from the chamber to the room. This is because the chamber is hotter than the room and there are heat losses through insulation regardless of whether the chamber had something in it or the chamber was empty. If you do not heat the chamber, it will ultimately cool to room temperature. The rate of cooling is dependant upon
