Regarding safety valve calculations
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In the calculation of safety valves, the constant-pressure specific heat of a gas and its constant-volume specific heat come into play. What do these two types of specific heats mean exactly? Where can one find this data? Experts, could you give me some hints? I’ve been working on selecting safety valves these past couple of days, and it’s really confusing! (I’ve only just started working with pressure vessels, and my instructor wants me to do the calculations manually, without using any software.)
Refer to Section 2-715 (Physical and Chemical Data) in Volume 1 of the 3rd edition of the Chemical Engineering Design Handbook for further information.
Specific heat at constant pressure refers to the amount of heat required to raise the temperature of 1 kg of a substance by 1 K (or 1 degree Celsius) while keeping the pressure constant. Specific heat at constant volume refers to the amount of heat required to raise the temperature of 1 kg of a substance by 1 K (or 1 degree Celsius) while keeping the volume constant