Dear all,
i'm just beginning to work on the inclusion of stochastic occupancy
profiles in type 56. After briefly reviewing the theoretical background i
could find and before starting to work with studio, i thought that probably
some of you have experience with this issue, so I would highly appreciate
any recommendation, reference or experience you may have that could help to
anticipate potential problems. Specially, I'm worried about the definition
of stochastic setpoints for heating and cooling systems. Any comments are
welcome, kind regards
Angel
--
*?ngel Carrera*
*Responsable I+D
?rea t?cnica*
Sistemes Avan?ats d'Energia Solar T?rmica SCCL
C/ Roger de Ll?ria, 29 3r 2a 08009 Barcelona
Tel: (+34) 93 342 47 55 Fax: (+34) 93 342 47 56
angel.carrera at aiguasol.coop
http://www.aiguasol.coop
Dear Angel,
I have done stochastic profile using type 62 ? excel calling. Excel is
passable to create stochastic algorithm, e.g. there is random function ?
which returns, after each change in file, new random value. Disadvantage of
type 62 is computing time: each new type 62 make calculation slower.
There is also some error in type 62 that it has less maximum amounts of
inputs and outputs (8) then it is stated in the manual and description (10),
but you can use more than one type 62 in one project.
Regards!
------------------------------------------------
Karol Bandurski MSc.
Poznan University of Technology
www.put.poznan.pl
Angel,
There are two components in the TESS Utility Library (Type577, and
Type578) which provide a random number with either a uniform or a normal
distribution. When I have needed to make a schedule that has some random
element to it, I have used one of these two Types combined with my set
schedule in an equation so that I don't get quite the same schedule from
day to day. I imagine you could do the same for setpoints.
Best,
David
--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com
Dear David,
thanks a lot for your answer. By the way, do you know any way of
calculating the cumulative distribution function for a random number from a
normal distribution?
Best,
Angel
2012/6/18 David BRADLEY
--
*?ngel Carrera*
*Responsable I+D
?rea t?cnica*
Sistemes Avan?ats d'Energia Solar T?rmica SCCL
C/ Roger de Ll?ria, 29 3r 2a 08009 Barcelona
Tel: (+34) 93 342 47 55 Fax: (+34) 93 342 47 56
angel.carrera at aiguasol.coop
http://www.aiguasol.coop