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The article discusses the influence of climate change in Wroc\u0142aw on the operation of heat recovery exchangers. The main focus is the influence of heat recovery temperature efficiency regulation on the cooler and heater operation time and thus on the energy required for their operation. A typical HVAC system with heat recovery system operation is evaluated using a t-tz chart. To present ongoing climate changes, a comparison of design data from the Dz.U. 2002 nr 75 poz. 690 is made, with later amendments and data released by the Ministry of Investment and Development (1971\u20132000) and data from 1996\u20132022 available at meteomodel.pl. The article provides data that confirm that climate changes caused an increase in outdoor temperature air by 5 K that should be used as design parameters (compared to regulations) for the winter and summer conditions in the city of Wroc\u0142aw. Currently, the duration of outdoor air temperature (mean values for the period 1996-2022) in the range of 0\u201317oC is shown to be approximately 68% of the year. Therefore, the possibility of using free-cooling is significantly increased, influencing the reduction of the energy required for cooling purposes.<\/p>\n","protected":false},"featured_media":0,"parent":0,"menu_order":0,"template":"","meta":[],"tags":[638,3704,2651,636,3703,3702,546],"tematyka":[488],"class_list":["post-19636","artykul","type-artykul","status-publish","hentry","tag-air-cooler","tag-energy","tag-free-cooling","tag-heat-exchanger","tag-heating-coil","tag-temperature-efficiency","tag-ventilation","tematyka-ventilation-air-conditioning-cooling","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"ptb_metabox":{"ptb_artykul_text_1":["SYLWIA SZCZ\u0118\u015aNIAK","\u0141UKASZ STEFANIAK","MA\u0141GORZATA MA\u0141YSZKO","PAULINA KANA\u015a","AGNIESZKA GRABKA","WERONIKA MICHALAK"],"ptb_artykul_text_2":"DOI 10.36119\/15.2023.4.4","ptb_artykul_numer_miesi_cznika":"04\/2023 Instal p.24-31","ptb_artykul_info_autor":"dr in\u017c. Sylwia Szcz\u0119\u015bniak https:\/\/orcid.org\/0000-0003-4358-0263, mgr in\u017c. \u0141ukasz Stefaniak https:\/\/orcid.org\/0000-0002-0291-1575, mgr in\u017c. Ma\u0142gorzata Ma\u0142yszko https:\/\/orcid.org\/0000-0002-1397-9743, mgr in\u017c. Paulina Kana\u015b https:\/\/orcid.org\/0000-0001-5291-4857 \u2013 Wydzia\u0142 In\u017cynierii \u015arodowiska, Katedra Klimatyzacji, Ogrzewnictwa, Gazownictwa i Ochrony Powietrza, Politechnika Wroc\u0142awska in\u017c. Agnieszka Grabka, Weronika Michalak \u2013 student Wydzia\u0142u In\u017cynierii \u015arodowiska, Ko\u0142o Naukowe Environmental Team, sekcja Energy Loop, Politechnika Wroc\u0142awska Corresponding author: sylwia szczesniak@pwr.edu.pl","ptb_artykul_orcid":["0000-0003-4358-0263","0000-0002-0291-1575","0000-0002-1397-9743","0000-0001-5291-4857"]},"ptb_taxonomy":{"post_tag":[{"term_id":638,"name":"air cooler","slug":"air-cooler","term_group":0,"term_taxonomy_id":638,"taxonomy":"post_tag","description":"","parent":0,"count":3,"filter":"raw"},{"term_id":3704,"name":"energy","slug":"energy","term_group":0,"term_taxonomy_id":3704,"taxonomy":"post_tag","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":2651,"name":"free-cooling","slug":"free-cooling","term_group":0,"term_taxonomy_id":2651,"taxonomy":"post_tag","description":"","parent":0,"count":5,"filter":"raw"},{"term_id":636,"name":"heat exchanger","slug":"heat-exchanger","term_group":0,"term_taxonomy_id":636,"taxonomy":"post_tag","description":"","parent":0,"count":4,"filter":"raw"},{"term_id":3703,"name":"heating coil","slug":"heating-coil","term_group":0,"term_taxonomy_id":3703,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":3702,"name":"temperature efficiency","slug":"temperature-efficiency","term_group":0,"term_taxonomy_id":3702,"taxonomy":"post_tag","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":546,"name":"ventilation","slug":"ventilation","term_group":0,"term_taxonomy_id":547,"taxonomy":"post_tag","description":"","parent":0,"count":19,"filter":"raw"}],"tematyka":[{"term_id":488,"name":"Ventilation, air conditioning, cooling","slug":"ventilation-air-conditioning-cooling","term_group":0,"term_taxonomy_id":488,"taxonomy":"tematyka","description":"","parent":0,"count":64,"filter":"raw"}]},"ptb_featured_image":null,"builder_content":" Read more <\/a>","_links":{"self":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/artykul\/19636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/artykul"}],"about":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/types\/artykul"}],"wp:attachment":[{"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/media?parent=19636"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/tags?post=19636"},{"taxonomy":"tematyka","embeddable":true,"href":"https:\/\/informacjainstal.com.pl\/en\/wp-json\/wp\/v2\/tematyka?post=19636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}