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In an article found on CNKI, there is a volume safety factor φ – what does this mean? How to retrieve the value?
I struggled with it for a long time, searched extensively, but still couldn’t figure out what it means
The classmate who worked on it together got 1.1, but according to the formula, the result should be less than 1
The computer sends the picture, but it seems like the phone can’t see it. I’ll give it a try with my phone
Based on the calculated required heat amount and the property parameters of the heat storage medium, it is possible to determine the mass of the required heat storage medium as well as the design volume of the heat storage tank [143]. When calculating the volume, a safety factor φ must be included to account for the thermal expansion and contraction of the fluid as well as practical manufacturing considerations. m=Q1/(Cp.△t0) = 3600 Pe T0 0.106/(n1.n2.Cp.△t0); V=m/(φ.ρ). In equation (3-3), Cp is the specific heat capacity of the heat storage medium (J/kg·K), and △t is the temperature difference of the medium inside the heat storage tank (°C), where △t = t – t. t is the temperature of the medium in the low-temperature heat storage tank; t2 is the temperature of the medium in the high-temperature heat storage tank. φ is the volume safety factor
Also, the specific heat is in Fahrenheit, while the temperature difference is in Celsius – is unit conversion necessary when performing the calculations?
It seems like the phone can’t display images; I can see them on my computer