First time here? Check out the Help page!
2023-03-27 19:39:52 -0500 | edited question | How does CondFD deal with no-mass materials? How does CondFD deal with no-mass materials? I'm assessing the performance of a DOE office building using different enve |
2023-03-27 19:32:47 -0500 | marked best answer | How does CondFD deal with no-mass materials? I'm assessing the performance of a DOE office building using different envelope materials. I'm using phase change materials and comparing the EUI/TEDI with the original envelope (thermal insulation). The thing is that this insulation, in the original model, is represented by a thermal resistance only, i.e., a Since CondFD uses a dynamic spatial discretization depending on the material's physical and thermal properties, how does the algorithm discretize a no-mass material? What information will it use? I don't get any errors simulating the original thermal insulation, though. In fact, the results seem to be really coherent, but I need to understand the software's procedure. Reading the engineering reference, the CTF algorithm has a solution for the no-mass materials:
Thinking upon the fully-implicit scheme used in the CondFD to solve the heat diffusion equation (the scheme I'm using), this approach would eliminate the energy storage term, the transient term. This would leave us with temperature terms with respect to iteration j+1, which doesn't make much sense. Does CondFD correct this? After all, this would transform a transient problem into a steady state problem within the control volume of the no-mass material, with time-dependent boundary conditions, while the other wall layers still have transient behaviors |
2023-03-27 19:32:47 -0500 | received badge | ● Scholar (source) |
2023-03-27 18:02:21 -0500 | edited question | How does CondFD deal with no-mass materials? How does CondFD deal with no-mass materials? I'm assessing the performance of a DOE office building using different enve |
2023-02-27 15:51:13 -0500 | asked a question | How does CondFD deal with no-mass materials? How does CondFD deal with no-mass materials? I'm assessing the performance of a DOE office building using different enve |
2023-02-13 06:25:47 -0500 | answered a question | TEDI(Thermal Energy Demand Intensity) You can obtain the heat added/removed to/from the air loop by the system components through System Loads Outputs. From t |
2023-02-12 09:12:06 -0500 | edited answer | TEDI(Thermal Energy Demand Intensity) I'm not sure about the TEDI definition you presented, but System Loads Outputs sum up all thermal energy transferred to |
2023-02-12 09:08:35 -0500 | received badge | ● Editor (source) |
2023-02-12 09:08:35 -0500 | edited answer | TEDI(Thermal Energy Demand Intensity) I'm not sure about the TEDI definition you presented, but System Loads Outputs sum up all thermal energy transferred to |
2023-02-12 09:07:15 -0500 | answered a question | TEDI(Thermal Energy Demand Intensity) I'm not sure about the TEDI definition you presented, but System Loads Outputs sum up all thermal energy transferred to |
2021-01-15 07:53:59 -0500 | received badge | ● Supporter (source) |
2020-04-28 08:05:34 -0500 | received badge | ● Student (source) |
2020-04-28 07:44:09 -0500 | asked a question | Strange crashes while simulating PCMs Strange crashes while simulating PCMs Greetings, everyone. I am currently simulating a construction without air conditi |