Overview of different standards for measuring and calculating SPF – How far apart are we really? Roger Nordman SP Technical Research Institute of Sweden Understanding of comparable HP systems’ performance SEER ASHRAE 206 SCOP EN14511/ EN14825/ EN16147 APF JIS C 9612 EXTERNAL FACTORS INTERNAL FACTORS SWOT: EN 14511 HELPFUL HARMFUL To achieving the objectives To achieving the objectives STRENGTHS The standard covers not only capacity measurement but also safety in operation Different temperature levels on sink side provided WEAKNESSES Capacity controlled heat pumps are not covered Nominal capacity of capacity controlled HPs is not clearly defined Circulation pumps are included in the testing procedure Broadly accepted and used also as a basis for quality assurance schemes (e.g. EHPA, ErP) Broadly accepted for different funding programs in Europe Might change to an ISO standard OPPORTUNITIES Large effort to modify and adapt because referenced within a variety of other standards THREATS SWOT: EN 14825 HELPFUL HARMFUL To achieving the objectives To achieving the objectives EXTERNAL FACTORS INTERNAL FACTORS STRENGTHS Different climatic conditions (3) are considered Different temperature levels on the sink side are accounted for in heating mode and source temperatures on the source side, respectively Transparent calculation method Auxiliary el. heating included Basis for the calculation of ErP Continuous improvement by the CEN Committee International standard In-line with a number of other EN standards such as EN 14511, EN 12309 OPPORTUNITIES WEAKNESSES Mandatory test points are not clearly defined Missing default values for auxiliary operating hours and power Not clear how to apply Only for heating applications Might be misleadingly applied THREATS Standard 206-2013 -- Method of Testing for Rating of Multipurpose Heat Pumps for Residential Space Conditioning and Water Heating (ANSI Approved) Task 3 & 6 Deliverable – Approach Wayne Reedy chaired the committee and Bill Craddick acted as secretary. Standard 206 Is an extension of and consistent with: ANSI/ASHRAE Standard 37 ANSI/ASHRAE Standard 116 AHRI Standard 210/240 ANSI/AHRI/ASHRAE ISO Standard 13256-1 AHRI Standard 870 ANSI/ASHRAE Standard 118.2 Standard 206 replaced: ANSI/ASHRAE Standard 137 and various waivers from DOEs Central Air Conditioner and Central Air Conditioning Heat Pump Test Procedure Status Task 3 & 6 Deliverable – Approach, cont’d. Standard 206 addresses air-source, water-source, ground water-source, groundsource closed loop, and direct geoexchange units for single-capacity, dualcapacity, and variable-capacity equipment. Provides for up to 7 modes of equipment operation Space conditioning only Dedicated water heating Dehumidification+space conditioning Dehumidification Space conditioning+water heating Dehumidification+space conditioning+water heating Dehumidification+water heating Status Task 3 & 6 Deliverable – Approach, cont’d. The standard method of test supports metrics for integrated appliances that allow easy comparison to metrics for individual appliances: For Air Source Equipment: SEERca; HSPFca; EFca For Ground or Water Source Equipment: EERca; COPca; EFca “ca” = combined appliance, referring to values for the integrated appliance, rather than the comparable metric for a standard appliance Status Task 3 & 6 Deliverable • Draft test standard completed and approved for public review by the committee in December, 2012 • ASHRAE approved release for public review in January, 2013. – Annex 39 members provided links to download copy of draft standard • Review Period: 3/15 - 4/29/2013 – No comments received – ASHRAE prepared Standard 206 for official release later 2013, nosw released! Status Task 3 & 6 Deliverable – Standard 206 Next Steps and Future Plans The ASHRAE committee is required to respond to every comment submitted during the public review period. In this case since no comments were received the draft standard is now being processed by ASHRAE for publication. Efforts will then be made to engage and collaborate with AHRI to generate a rating standard for multifunction (or integrated) heat pump systems based on the test standard. Harmonisation or local initiatives? The work in annex 39 have showed that: • The difference in test points in different regions doesn’t differ a lot, but timing between revisions is a threshold to harmonisation • Harmonisation could instead happen on ISO level, • Harmonisation could be made on test points, but there must me room for local variations, especially regarding climatic conditions and building demand profiles. THANK YOU! WHO WILL HAVE THE FIRST QUESTION?