{"id":635,"date":"2025-09-12T14:38:13","date_gmt":"2025-09-12T14:38:13","guid":{"rendered":"https:\/\/heatpumpingtechnologies.org\/annex51\/?page_id=635"},"modified":"2025-09-12T14:38:13","modified_gmt":"2025-09-12T14:38:13","slug":"about-the-project","status":"publish","type":"page","link":"https:\/\/heatpumpingtechnologies.org\/project51\/about-the-project\/","title":{"rendered":"About the Project"},"content":{"rendered":"
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* QUICK ACCESS *<\/strong><\/h2>\n<\/div>\n\n
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Final reports for download:<\/h3>\n<\/div>\n\n
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IEA HPT Annex 51 – Executive Summary and Document Guide<\/strong> – IEA HPT Annex 51 Executive Summary and Documents Guide<\/a><\/p>\n<\/div>\n\n

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IEA HPT Annex 51 – 2-page Summary \u2013 Acoustic Signatures of Heat Pumps – <\/strong>2-page_summary_Annex 51_2022<\/a><\/p>\n<\/div>\n\n

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IEA HPT Annex 51 – Umbrella Report<\/strong> – IEA HPT Annex 51 Umbrella Report<\/a><\/p>\n<\/div>\n\n

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Deliverable 1.0 – Introduction <\/strong>– IEA HPT Annex 51 D1.0<\/a><\/p>\n<\/div>\n\n

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Deliverable 1.1 – Measurement Techniques <\/strong>– IEA HPT Annex 51 D1.1<\/a><\/p>\n<\/div>\n\n

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Deliverable 1.2 – Regulations – Countries overview <\/strong>– IEA HPT Annex 51 D1.2<\/a><\/p>\n<\/div>\n\n

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Deliverable 1.3 – Regulations – Synthesis<\/strong> – IEA HPT Annex 51 D1.3<\/a><\/p>\n<\/div>\n\n

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Deliverable 2.1 – Selection of Heat Pumps for Round Robin Tests<\/strong> – Market figures – IEA HPT Annex 51 D2.1<\/a><\/p>\n<\/div>\n\n

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Deliverable 2.2 – Round Robin Tests – Air-to-Water Heat Pump<\/strong> – Heat Pump Water Heater – IEA HPT Annex 51 D2.2<\/a><\/p>\n<\/div>\n\n

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Deliverable 2.3 – Seasonal Sound Power Level<\/strong> – Air-to-Water Heat Pump – IEA HPT Annex 51 D2.3<\/a><\/p>\n<\/div>\n\n

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Deliverable 3 – Overview on Heat Pump Component Noise and Noise Control Techniques<\/strong> – IEA HPT Annex 51 D3<\/a><\/p>\n<\/div>\n\n

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Deliverable 4 – Analysis of the Effect of Operating Conditions of Heat Pumps on Acoustic Behaviour<\/strong> – IEA HPT Annex 51 D4<\/a><\/p>\n<\/div>\n\n

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Deliverable 5 – Report on heat pump installation with special focus on acoustic impact<\/strong> – IEA HPT Annex 51 D5<\/a><\/p>\n<\/div>\n\n

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Deliverable 6 – Annoyance rating and psychoacoustical analysis of heat pump sound<\/strong> – IEA HPT Annex 51 D6<\/a><\/p>\n<\/div>\n\n

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Deliverable 7.1 – Educational material on acoustics of heat pumps<\/strong>  – IEA HPT Annex 51 D7.1<\/a><\/p>\n<\/div>\n\n

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Deliverable 7.2 – Workshop material and conference contributions<\/strong> – IEA HPT Annex 51 D7.2<\/a><\/p>\n<\/div>\n\n

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Webinar presentations download<\/h3>\n<\/div>\n\n
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\u2022 Introduction Annex 51 webinar<\/a> \u2013 Caroline Haglund Stignor (Heat Pump Centre)
\u2022 Annex 51 overview<\/a> – Christoph Reichl (AIT, Austria)<\/p>\n<\/div>\n\n

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\u2022 European Standards and Legislation<\/a> \u2013 Roberto Fumagalli (Polimi, Italy)<\/p>\n<\/div>\n\n

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\u2022 Noise and seasonal variations based on interlaboratory results<\/a> \u2013 Francois Bessac (CETIAT, France), Thomas Gindre (ISE, Germany)
\u2022 Effect of different heat sinks and operation modes on acoustic emissions<\/a> – Kamal Arumugam (DTI, Denmark)<\/p>\n<\/div>\n\n

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\u2022 (Transient) Noise of Heat Pumps<\/a> \u2013 Thore Oltersdorf (Fraunhofer ISE, Germany)
\u2022 Heat pump installation and effects on surrounding environment<\/a> – Christoph Reichl (AIT, Austria)
\u2022 Annoyance rating and psychoacoustical analysis of heat pump sound<\/a> – Henrik Hellgren (RI.SE, Sweden) (8\u2019)
\u2022 Panel Q&A of the presentations (20\u2019) \u2013 lead by Caroline Haglund Stignor (Heat Pump Centre)<\/p>\n<\/div>\n\n

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* FURTHER DOWNLOADS *<\/strong><\/h2>\n<\/div>\n\n
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The primary aim<\/strong> with Annex 51 is to further increase the acceptance of heat pumps (as air-to-water, water-to-air, air-to-air and brine-to-water units) for comfort purpose with respect to the noise and vibration emissions.<\/p>\n<\/div>\n\n

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A second focus<\/strong> is placed on increasing knowledge at different levels (manufacturers, acoustic consultants, installers, legislators). To reach this goal, first different reasons to reduce sound emissions depending on countries (legislation), locations and applications have to be gathered and understood. The main influencing factors to the acoustic signature of these units will be identified. Collecting and combining research results in these fields on the different implementation levels (component, unit and application) will finally lead to directions for improved components, units and control strategies including guidelines, as well as training and inputs to future standards. The aim is to gather the knowledge and expertise of the participants on the different levels in order to forward this knowledge and establish recommendations and advices.<\/p>\n<\/div>\n\n

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All presentations<\/strong> given at the workshop in the framework of the ICR2019  by Annex 51 members are now online and ready for download:<\/p>\n<\/div>\n\n

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Program<\/a><\/p>\n<\/div>\n\n

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Annex 51 Acoustic Signatures of Heat Pumps in the framework of the International Energy Agency Technology Collaboration Programme on Heat Pumping Technologies<\/a><\/p>\n<\/div>\n\n

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Acoustic Regulations of Heat Pumps<\/a><\/p>\n<\/div>\n\n

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1D Modelling of Heat Pumps including Acoustics<\/a><\/p>\n<\/div>\n\n

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Simultaneous energy efficiency and acoustic evaluation of heat pump systems using dynamic simulation models<\/a><\/p>\n<\/div>\n\n

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Acoustic Emissions and Noise Abatement of Air to Water Heat Pumps – part1<\/a><\/p>\n<\/div>\n\n

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Acoustic Emissions and Noise Abatement of Air to Water Heat Pumps – part2<\/a><\/p>\n<\/div>\n\n

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Testing campaign on the energetical and acoustical behaviour – part1<\/a><\/p>\n<\/div>\n\n

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Testing campaign on the energetical and acoustical behaviour – part2<\/a><\/p>\n<\/div>\n\n

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Heat pump noise – Operation dependence and seasonal averaging<\/a><\/p>\n<\/div>\n\n

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Final report of the national Austrian Project “SilentAirHP” (in english and german language)<\/strong><\/p>\n<\/div>\n\n

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SilentAirHP_Endbericht<\/a><\/p>\n<\/div>\n\n

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SilentAirHP_final_report<\/a><\/p>\n<\/div>\n\n

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Bachelor work “Sound field simulations of air-water heat pumps in a terraced housing estate”<\/strong><\/p>\n<\/div>\n\n

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Sound_Field_Simulations<\/a><\/p>\n<\/div>\n\n

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Appendix_to_Sound_Field_Simulations<\/a><\/p>\n<\/div>\n\n

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Additional documents for deliverable 7.1 in original language<\/strong><\/p>\n<\/div>\n\n

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AFPAC FICHE ACOUSTIQUE n1<\/a><\/p>\n<\/div>\n\n

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AFPAC FICHE ACOUSTIQUE n2<\/a><\/p>\n<\/div>\n\n

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AFPAC FICHE ACOUSTIQUE n3<\/a><\/p>\n<\/div>\n\n

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vejledningen_stoejberegner<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

* QUICK ACCESS * Final reports for download: IEA HPT Annex 51 – Executive Summary and Document Guide – IEA…<\/p>\n","protected":false},"author":58,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"349,252,294,320,342,255","_relevanssi_noindex_reason":"","footnotes":""},"class_list":["post-635","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/pages\/635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/users\/58"}],"replies":[{"embeddable":true,"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/comments?post=635"}],"version-history":[{"count":1,"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/pages\/635\/revisions"}],"predecessor-version":[{"id":636,"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/pages\/635\/revisions\/636"}],"wp:attachment":[{"href":"https:\/\/heatpumpingtechnologies.org\/project51\/wp-json\/wp\/v2\/media?parent=635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}