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Re: [TRNSYS-users] signal-depending summing unit?
Hi Jochen,
Maybe something like this approach might work:
- determine the total on-time using Type24: integrator
- every timestep, determine whether the chiller just switched on using Type
93: input value recall (if [control value at T=n minus value at T=n-1]
equals 1, the chiller just switched on)
- determine the number of starts by integrating the number of on-switches
(Type93 > Type24)
- divide the total on-time by the number of starts
I hope this answers your question.
Regards, Arie
-----Oorspronkelijk bericht-----
Van: trnsys-users-bounces@engr.wisc.edu
[mailto:trnsys-users-bounces@engr.wisc.edu] Namens Jochen Doell
Verzonden: dinsdag 23 januari 2007 11:22
Aan: trnsys-users@engr.wisc.edu
Onderwerp: [TRNSYS-users] signal-depending summing unit?
Hello,
I have a maybe quite simple problem.
I want to investigate the operating behaviour of an absorption chiller.
In my deck i have a controller which gives me 0 or 1 as a function which
controls this chiller. Now i want to know the mean-operating-period,
that means if the machine starts running, how many timesteps does it
continue until it stops (on the average).
What i need is something like a "signal-depending summing unit". Ideas?
Thanks in advance,
Jochen
--
__________________________________________________
Jochen Döll / Diplomand
Dept. Thermally Active Materials and Solar Cooling
Fraunhofer-Institut für Solare Energiesysteme
Heidenhofstrasse 2, 79110 Freiburg, Germany
+49 (761) 4588 5456
jochen.doell@ise.fraunhofer.de
www.ise.fhg.de
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