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A simple heat exchanger consists of a hot fluid flowing inside a tube and a cold fluid flowing around (outside) that tube. Which mechanism is dominant in heat transfer from the inside fluid to the tube wall? Answe Increasing the flames under a pot of boiling rice will make it cook faster. Select one: True False A simple heat exchanger consists of a hot fluid flowing inside a tube and a cold fluid flowing around (outside) that tube. Which mechanism is dominant in heat transfer through the tube wall? Calculate the rate of cooling needed (in MW) to condense a 6.7kg/s stream of steam at 200 deg Celsius to water at that temperature. The specific enthalpy of vapourisation at that temperature is 1939kJ/kg. Answer Calculate the rate of cooling needed (in M/h ) to reduce the temperature of a 240 deg Celsius stream of water, flowing at 7.8kg/s, to 180deg Celsius. The heat capacity of water in that temperature range is 4.5kJ/kg.K