Ashish_Sinha's profile - activity

Dear Archmage, yes, thank you. this uservoice is just what I want to express. On the user voice there are no answers to this question, so I guess, I wouldhave to wait till this feature is added in energy plus.

ok, I am using MLE+ (matlab-EnergyPlus tool) I guess I will have to use BCVTB then.

continuing... , so 10 diff EP sessions consume 10 times the time needed for warmup. And all this despite the fact that I already have the state of the building known at time t = 2 hours. And an EP session is already alive that contains the state of building at time t = 2 hours. It is alive and waiting for me to give it the HVAC setpoint that uses least energy.

How do I avoid going through warmups multiple times? it is taking too much time and making my approach impractical.

Please help

Dear Adhilton, I am using an energy plus model for predictive control of HVAC. This requires me to predict future thermal states of a building under different series of HVAC set points for future. Once I do that, I evaluate which series will use less energy, and I go with that. Consider that I have the building history from time t = 0 to time t = 2 h. Now (at t = 2 hours), I need to evaluate multiple series of HVAC setpoints for future. If there are 10 different series, then I have to initiate 10 different EP sessions to predict the 10 different behavior of the building.

let's say we have run EP for a building from time = 0 hour to time = 2 hour, and we store the output data about thermal state of the house and CLOSE the EP sesison.

Next time I need to simulate the same house from time 2 hours to time 3 hours. I will definitely have to open a fresh EP session to do so, and it will go over the warm up period again.

I want to save this time spent on warmup calculations, because from the previous run (from time = 0 to time = 2), I already have the thermal condition of the house at the end of time t = 2. Is there a way to provide this information to the new EP session, so that it does not do warmup calculations again?

Appreciate any help, thank you, -Ashish

thank you for your response. I am trying to implement this, will let you know how it goes.

I need to apply air flowing into a building zone at a certain flow rate and temperature. So far the HVAC tools available do not allow me to independently control air flow rate and temperature into a zone, though they allow me to control these indirectly through thermostat set points. I just want to control these directly. How to do it?