Help calculate the heat release?
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In a container with a volume of one cubic unit, the steam valve is opened to allow boiler steam to enter, raising the temperature of the container to 80 degrees Celsius. Once the temperature drops to 35 degrees Celsius, the steam valve is closed and the container is cooled using tap water. How much heat is released from within the container? (In other words, it’s the amount of heat absorbed by the cooling water; I’m calculating the quantity of cooling water required for the water to go from 32 degrees Celsius to 35 degrees Celsius, so as to help determine the size of the cooling tower.) Please give me some guidance! Formulas and physical property data: How much heat is released when steam at 80 degrees turns into water at 80 degrees? ? This post was last edited by lulin505 on 2009-2-27 22:49.]
There seem to be many uncertain factors: 1. Whether the steam is superheated and to what extent. 2. The material and size of the container. 3. Whether the condensed steam is removed. If the process is dynamic, it increases the complexity of the calculations; if the process conditions are clear, only heat balance calculations are required
I think it’s not difficult to figure this out; it’s also easy to calculate. However, you need to know what your steam pressure is in order to carry out the calculation easily. There should be two processes involved here: the transformation of steam at 80 degrees into water at 80 degrees is a phase change process, and then the water in this state is cooled from 80° to 35°. But the original poster didn’t explain the pressure clearly.