[Greenbuilding] Is this product desirable?

[John Salmen]

Its nice that they have packaged a hot water heat pump with solar but there
are a few (and will be a few more) heat pump water heaters on the market now
in north America and combining one with solar hot water (or even solar
electric) is not difficult. Actually desirable for northern locations as the
heat pumps do pull heat from the building to work and the byproduct is
chilled air so there is a heating loss. Works though in heat recovery - I
ducted the exhaust air to the hot water tank pump enclosure and vented the
chilled air. Be nice if a unit was packaged for that purpose. One of the
best products I found (early pioneer in small heat pumps) is made by Nyle in
Connecticut and its an add-on unit to any existing storage system so can be
integrated into a hybrid situation really easily.

 

From: Greenbuilding [mailto:greenbuilding-bounces at lists.bioenergylists.org]
On Behalf Of Joe Killian
Sent: April-29-15 8:03 AM
To: greenbuilding at lists.bioenergylists.org
Subject: Re: [Greenbuilding] Is this product desirable?

 

   Looks like a technically nice approach - a solar heat collector using
some (un-named) fluid with a low freezing point so freeze-up isn't a
problem, operable either on straight solar heat gain or if insolation isn't
enough to attain desired temperatures then kick in a compressor and operate
as a heat-pump from the panel to storage.
  I wish they'd say that in so many words.  The brochure wording has a shady
character similar to many pseudo-science marketing scams.  Yes, Nicolas
Carnot.  Heat pumps all, & most refrigerators, use the cycle named after
him.
  I'd ask for more specifications & performance test numbers and references.

Joe
physicist by training, engineer by profession


On 4/29/2015 7:43 AM, Gennaro Brooks-Church - Eco Brooklyn wrote:

Can somebody who knows solar hot water heating tell me if this product is
worth buying? 

http://www.energie.pt/en/products/ecotermo

It has a heat pump that uses 390W and creates 2900 Thermal Power W (whatever
that is).




Gennaro Brooks-Church
Director, Eco Brooklyn Inc.
Cell: 1 347 244 3016 USA
www.EcoBrooklyn.com
22 2nd St; Brooklyn, NY 11231






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