equest-users,
I am trying to connect two water loops
in order to recover heat with a water to water heat pump. I was trying
to do this with a heat exchanger but the heat exchanger module doesn't
seem to be able to attach to a loop! I am a missing something or is the
heat exchanger not functional?
Thx
Eric Allen Youngson
Pasha,
I have not received anything useful. I am not expecting anything,
really, I've heard from experienced modelers that there has been no
answer to this question in the past but there's always hoping!
One caveat on the Loop-to-Loop HP-it can only attach to
the lake/well loop type. This has been a point of contention for some
time.
Happy modeling!
Eric Allen Youngson
I'm not sure what others experience has been but:
1. I believe the heat exchanger module is basically to attach a cooling
tower to a loop, nothing else
2. I have had trouble having eQuest properly recovery heat from a loop. I
have found that using chillers, eQuest will only recover up to 100% of the
chiller's hourly capacity (chillers usually reject more than 100% to the CW
loop), also, sometimes much less than 100% is recovered.
3. With the loop-to-loop heat pump, I recall it being called on by a
cooling load, and not by a heating load. In other words, it will reject
heat to a heating loop only when a cooling load exists, but will not turn on
if only a heating load exists. I'd be delighted if anyone can tell me how
to operate it otherwise.
I recently completed a project that required modeling heat recovery. I
ended up using the hourly outputs, and calculating in an excel spreadsheet.
I did get some test models that appeared to work, but when I looked at the
hourly results, sometimes only 15% of the heat was being recovered when the
HW loop could've used 100% why... I don't know.
Hope this helps, and eQuest developers--I'd love to see a solution to the
above issues. I think that myself and some others on this list-serve would
contribute to the cost of making improvements, if possible.
Thanks,
--
Karen Walkerman