Hello everyone!
I would appreciate if someone could help me with the calculation of pressure vessel heating.
We have a pressure vessel V1= 31,1 Liter and our task is to heat the Working fluid with water.
PV is insulated and we don´t take losses into consideration.
We need to know how long does it take for this medium (31.1 lit. and 2,1 kJ/kg*K) to be heated by 1 °C when heated with water (19.9 lit. at 50 ° C). (Pic. attached)
I first calculated the energy stored in water with this formula:
E =𝑐𝑝 ∗ Δ𝑇 ∗𝑚= 4,157 * 30 * 19,9 = 2482 kJ
Than i calculated the power absorbed by material with this formula: P =(𝐺 ∗𝑆𝐻 ∗ Δ𝑇 )/3600= 31,1 * 2,1 * 1 = 65,1 kJ/s
In order to calculate the needed time i divided: E/ P= 38 sec.
I am not shore if i got the calculation right or not?
Thank you!
I would appreciate if someone could help me with the calculation of pressure vessel heating.
We have a pressure vessel V1= 31,1 Liter and our task is to heat the Working fluid with water.
PV is insulated and we don´t take losses into consideration.
We need to know how long does it take for this medium (31.1 lit. and 2,1 kJ/kg*K) to be heated by 1 °C when heated with water (19.9 lit. at 50 ° C). (Pic. attached)
I first calculated the energy stored in water with this formula:
E =𝑐𝑝 ∗ Δ𝑇 ∗𝑚= 4,157 * 30 * 19,9 = 2482 kJ
Than i calculated the power absorbed by material with this formula: P =(𝐺 ∗𝑆𝐻 ∗ Δ𝑇 )/3600= 31,1 * 2,1 * 1 = 65,1 kJ/s
In order to calculate the needed time i divided: E/ P= 38 sec.
I am not shore if i got the calculation right or not?
Thank you!