I am not sure if the PSO in GenOpt is a multi-objective algorithm... if not, you need to set the weighting between the two objectives "right" in order to get the desired result. Try jEPlus+EA for a multi-objective approach, which will show you the trade-off between performance and cost: http://www.jeplus.org/wiki/doku.php?id=docs:jeplus_ea:features
Seeing the trade-off will help you answer your second question, too.
Regards,
Yi
From: TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org] On Behalf Of Free
Sent: 13 April 2016 14:47
To: trnsys-users
Subject: [TRNSYS-users] (PLEASE)optimization of a solar heating system combined with dual-source heatpump
Dear all
I am now doing a project named "optimization of a solar heating system combined with dual-source heatpump(dual-source:water in storage tank and outdoor air)" in trnsys for my master degree thesis, the system is just used for space heating in heating season at a high and cold area where the solar radiation is not so good.The schematic diagram of the system is as follow:
I want to find the best configuration of the system (include the area of the collectors, the angle of azimuth&dip of the collector, the constant flowrate of the collectors, the volume of the storage tank ) .when i simulated it in trnsys and genopt using PSO ,i tried to set the object function as the sum of energy consumption in a year or the life circle cost of the system ,it turned out that the optimised area of collector is awalys to be the low limit of the collectors range i set in the genopt, may be it is the truth,i am confused.
another question which is really important to me:
Has anyone has the experience of optimization in similar system?how to confirm the best area of collector of the system?
any advice is much appreciated.
Ware
best regards