[Equest-users] Solar Thermal Energy Assisted Cooling

[Nicholas Caton]

Hi Damon,

So... a solar-powered refrigerant compressor?

I suppose you could model a small PV array to generate an appropriate kW output profile within eQuest, then just dump that into the building meter with a normal DX-system.  You'll want that airside system to have some deliberately-assigned availability scheduling so that it cannot actively cool when there is insufficient daylight... but otherwise I think you'd define that system normally.  The biggest potential hurdle with that approach might be extrapolating the actual efficiency/performance of the equipment (sans solar contributions) from the manufacturer.

I might sooner use a 3rd party software, purpose built for estimating PV system performance, over eQuest though... eQuest is capable but frankly a bit unwieldy for average joes like me, lacking specialized and deep knowledge of PV technology.  I would avoid it through post-processing if possible, but if you do go a 3rd party PV analysis route and you MUST get that generation into your eQuest model, you can use the library entries for a PV generator alongside an electric sale meter to "back in" a generation profile aligning with your outside analysis.

I hope this is helpful!

~Nick



[cid:image001.jpg at 01D640AE.5CC01E30]
Nick Caton, P.E., BEMP
  Senior Energy Engineer
  Energy and Sustainability Services
  Energy Performance Contracting
D
M
E

913 . 564 . 6361
785 . 410 . 3317
nicholas.caton at se.com<mailto:nicholas.caton at se.com>
15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219

[cid:image004.png at 01D640AC.D65D7550]


From: Equest-users <equest-users-bounces at lists.onebuilding.org> On Behalf Of Damon Lapping via Equest-users
Sent: Friday, June 5, 2020 5:47 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Solar Thermal Energy Assisted Cooling


[External email: Use caution with links and attachments]

________________________________



Good Day,

Does anyone have experience in modelling solar thermal energy assisted cooling for HVAC? These systems use thermal energy collected from the solar collector and is converted into mechanical work, which is used then used to compress the working fluid in a vapor compression cycle directly. So the HVAC system achieves the required setpoint temperature with less energy required from the compressor than previously required.

I have heard on some online platform that it can be done in equest but can't seem to find that link anymore.

Can anyone help a brother out? :-)

Thanks

Regards

Damon

Regards

DAMON LAPPING, CEM(r)
Managing Consultant
damon at greenlogik.co.za<mailto:damon at greenlogik.co.za>
www.greenlogik.co.za<https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.greenlogik.co.za%2Fabout.html&data=02%7C01%7CNicholas.Caton%40se.com%7Cdf20d0d4d8434ef5a60408d8093ddb52%7C6e51e1adc54b4b39b5980ffe9ae68fef%7C0%7C0%7C637269508560993357&sdata=CqC6AvO52CV4I8FJW9BBcQAsCUJXxClDZY7bmW3fTDg%3D&reserved=0>
T.    +27 (0) 87 470 0650    F.   +27 (0) 86 763 1323
C.   +27 82 339 3865
[cid:image005.jpg at 01D640AC.D65D7550]
UNIDO Certified Energy Management Professional
AEE CEM (Association of Energy Engineers Certified Energy Manager)
SA Green Building Council Existing Building Performance Accredited
Professional




________________________________
[Avast logo]<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.avast.com%2Fantivirus&data=02%7C01%7CNicholas.Caton%40se.com%7Cdf20d0d4d8434ef5a60408d8093ddb52%7C6e51e1adc54b4b39b5980ffe9ae68fef%7C0%7C0%7C637269508560993357&sdata=QUpZoYsPanGOpzB0qagRGdIMP5BoMqnQU2nSu5oh%2FbA%3D&reserved=0>

This email has been checked for viruses by Avast antivirus software.
www.avast.com<https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.avast.com%2Fantivirus&data=02%7C01%7CNicholas.Caton%40se.com%7Cdf20d0d4d8434ef5a60408d8093ddb52%7C6e51e1adc54b4b39b5980ffe9ae68fef%7C0%7C0%7C637269508561003358&sdata=vXOK0kWS3xdfaCnlEoIDBDpToXj11SD%2FgjZY6cI1rUk%3D&reserved=0>



______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
______________________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20200612/1e641967/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.png
Type: image/png
Size: 8477 bytes
Desc: image004.png
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20200612/1e641967/attachment.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image005.jpg
Type: image/jpeg
Size: 11078 bytes
Desc: image005.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20200612/1e641967/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.jpg
Type: image/jpeg
Size: 1794 bytes
Desc: image001.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20200612/1e641967/attachment-0001.jpg>