Gas pipeline loss issues in thermal power plants for industrial use
Thread Content
Recently, the factory has been undergoing renovations, and a survey was conducted among its existing heat users. Currently, all that is known are the pressure and temperature of the steam pipes leaving the factory, as well as the pressure, temperature, and diameter of the pipes at the user end. It is necessary to calculate the amount of pipe loss I’m not sure if it’s possible to calculate this. Please, any friends with experience could give some advice. Thank you in advance:handshake
There is too little information; only qualitative assessment is possible, not quantitative calculation
Well, indeed, I’ve also looked at quite a lot of materials before. If you want to calculate pipe losses, what minimum amount of data is required? Also, knowing the temperature and pressure at both ends – I remember that it’s possible to calculate the enthalpy values on each side, and then multiplying those by the steam flow rate to determine the heat loss. I’m not sure if this method is correct
Your approach is correct; it’s possible that the values you calculate theoretically will differ from the actual values. I suggest that for this, it would be best to find a way to verify it through experiments, so as to make it more useful.
I’m not majoring in thermodynamics, so I also get stuck when faced with such problems. “Does “pipe loss” not include frictional loss? Knowing the flow rate and the enthalpy of the corresponding steam allows for the calculation of the total heat. (The enthalpy value can be found in tables; there are also enthalpy and entropy calculation tools available on forums for this purpose.) For the calculation of pipeline resistance, reference can be made to “HG-T 20570.7-95 ‘Calculation of Pipeline Pressure Drop’”“ ； For the selection of insulation materials and heat loss, reference can be made to \"HG-T 20570.11-95 Selection of Insulation and Thermal Protection Types.\" As for software options, the user can click here to give it a try.
It is generally calculated based on the heat enthalpy value.
Indeed, I feel this must be inaccurate. The supervisor gave me these problems asking for the area, but only providing the length without giving the width; it’s really confusing