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Giorgos,<br>
I would stay with Type753 (heating coil) and Type508 (cooling coil)
if indeed that is how the building is being heated and cooled. I am not
sure how you are controlling the system but I would recommend putting
the zones into temperature level control and adding a thermostat that
turns on and off the flow to each coil depending on the temperature of
the zone (instead of calculating a zone load and then somehow imposing
that on the coils. You may also need to use some diverting valves
(Type11) to control whether the water from your heat pump is going to
the heating or the cooling coil.<br>
Kind regards,<br>
David<br>
<br>
<br>
Giorgos Fragogiannis wrote:
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<p class="MsoNormal"><span lang="EN-US">Dear all<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am new user in trnsys and I
try to
simulate o ground source heat pump system connected to o 7 zone
building (type
56), in order to study the interrelation between ground, HP (water to
water), fan coil and building. <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My question is what type of
fan coil I must
used in order to meet the heating and cooling demand?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Until now I tried to solve
this
problem by using type 753 and 508 simultaneously, but it is difficult
to controlled
it!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Is the right way to use of
water to air
heat pump (type 505), as fan coil or you have any other idea about
this
problem ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My Regards <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> George Fragogiannis<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">National Technical University
of Athens<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">School of Mining and
Metallurgical
Engineering<o:p></o:p></span></p>
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Thermal Energy System Specialists (TESS), LLC
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USA
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