Is it hot fluid steam and cold fluid feed enter heat exchanger?
Room temperature fluid will do effective, the main suitable! My mothers and dads instructed me that chilly fluid should not be taken in extra in the time of warm day as whilst the chilly water will reason condensation on your trachea or windpipe. warm tea could temporarly make you sense warmer, however the physique will convey down the temperature via sweating greater, so which you will greater cooler after that.
Part of your question what is hot fluid and cold fluid? This depends on the application and fluids can be anything that do not harm the material of the heat exchanger . The two fluids do not mix but interchange heat through the exchanger's wall.