[Bldg-sim] air to water HP in Std 90.1

[Anthony Hardman]

There is a "Heat Pump Pool Heater" reference (in chapter 7 of 90.1-2004 at
least) which I assume is an air-water configuration.  You'd have to check
the test procedure to be certain (ASHRAE 146) though.  Other than that, I
don't think ASHRAE has addressed this equipment (or water-water HP's for
that matter) yet, gggrrrrrr.

Anthony Hardman
Mechanical Engineer
Geo-Energy Services

-----Original Message-----
From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Xavier Garcia
Sent: Thursday, February 04, 2010 2:54 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] air to water HP in Std 90.1

Hi,
Does Ashrae Std 90.1-2007 impose any minimum performance criteria for
air-to-water heat pumps working as central hot water generators for
heating purposes?
In tables 6.8.1 I can only find minimum performance requirements for
air-to-air, water source, groundwater source and ground source heat
pumps, but nothing about air-to-water.
Thanks,
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