Natural gas saving and emissions decrease in public health care sector – a case study

Mierka, Otto; Variny, Miroslav; Skalíková, Ingrida; Sámel, Peter; Kizek, Ján; Súth, Róbert; Nagy, Karol

doi:10.2478/ceer-2019-0008

Artykuł - szczegóły

Tytuł artykułu

Natural gas saving and emissions decrease in public health care sector – a case study

Autorzy

Mierka Otto , Variny Miroslav , Skalíková Ingrida , Sámel Peter , Kizek Ján , Súth Róbert , Nagy Karol

Treść / Zawartość

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DOI

10.2478/ceer-2019-0008

Warianty tytułu

Ograniczenie zużycia gazu ziemnego i redukcja emisji w sektorze zdrowia publicznego – studium przypadku

Języki publikacji

Abstrakty

A study on natural gas saving and emissions decrease in the public health care sector is presented. The analyzed hospital complex belongs to the largest ones in Slovakia and uses both hot water and water steam for heating purposes. Visual steam system inspection revealed serious inefficiencies, including steam venting, missing pipelines insulation and obsolete steam sources with dysfunctional blow-down system. Defined experiment with stepwise steam appliances shutdown enabled quantification of excess natural gas consumption due to these inefficiencies. Measures proposed for the solution of this state are inexpensive, with a short payback period. The expected natural gas savings amount up to 3200 MWh/year, which represents roughly 50% of the total natural gas consumption in the hospital complex.

Niniejszy artykuł prezentuje studium przypadku na temat ograniczenia zużycia gazu ziemnego i emisji w sektorze zdrowia publicznego. Analizowany kompleks szpitalny należy do największych na Słowacji i używa do ogrzewania zarówno ciepłej wody użytkowej, jak i pary wodnej. Kompleks ten będzie w najbliższych latach poddany renowacji, włącznie z instalacją dystrybucji mediów. Analiza obecnego systemu i wynikające z niej zaproponowane sposoby na zaoszczędzenie energii oferują redukcję kosztów powiązanych z przyszłą inwestycją. Wizualna ocena systemu dystrybucji pary wodnej ujawniła poważne wady tego systemu, w tym w odpowietrzaniu systemu, uszkodzonej bądź brakującej izolacji rur, przestarzałych bojlerach parowych z niedziałającym systemem usuwania zanieczyszczeń. Eksperyment ze stopniowym wyłączaniem urządzeń parowych umożliwił ilościowe określenie nadmiaru zużycia gazu ziemnego spowodowanego wspomnianymi niedostatkami. Metodologia takiego eksperymentu jest uniwersalna i łatwa w zastosowaniu w jakimkolwiek innym budynku użyteczności publicznej gdzie podobny system pary wodnej jest w użyciu. Zaproponowane rozwiązania dla poprawy takiego stanu są niedrogie i z krótkim czasem zwrotu inwestycji. Zastosowanie nowej izolacji rur, naprawa odwadniaczy oraz naprawa zaworów redukcyjno-regulacyjnych do odpowietrzania pary w odpowietrznikach są przedmiotem rozważań. Oczekiwana redukcja zużycia gazu ziemnego wynosi do 3200 MWh/rok, co stanowi około 50% rocznego zapotrzebowania tego gazu w kompleksie szpitalnym. Ocena środowiskowa zaproponowanych zmian pozwala oczekiwać redukcji emisji dwutlenku węgla na poziomie 644 ton rocznie oraz tlenków azotu na poziomie 0.75 ton rocznie.

Słowa kluczowe

public building health care sector natural gas emission heat loss

budynek użyteczności publicznej gaz ziemny emisja straty ciepła

Wydawca

Oficyna Wydawnicza Uniwersytetu Zielonogórskiego

Czasopismo

Civil and Environmental Engineering Reports

Rocznik

2019

Tom

Vol. 29, no. 1

Strony

119--127

Opis fizyczny

Bibliogr. 49 poz., rys., tab., wykr.

Twórcy

autor

Mierka Otto

Slovak University of Technology, Department of Chemical and Biochemical Engineering, Faculty of Chemical and Food Technology, Bratislava, Slovak Republic

autor

Variny Miroslav

miroslav.variny@stuba.sk

Slovak University of Technology, Department of Chemical and Biochemical Engineering, Faculty of Chemical and Food Technology, Bratislava, Slovak Republic

autor

Skalíková Ingrida

Slovak University of Technology, Department of Building Services, Faculty of Civil Engineering, Bratislava, Slovak Republic

autor

Sámel Peter

Slovak University of Technology, Department of Chemical and Biochemical Engineering, Faculty of Chemical and Food Technology, Bratislava, Slovak Republic

autor

Kizek Ján

Technical University of Kosice, Department of Thermal Technology and Gas Industry, Faculty of Metallurgy, Materials and Recycling, Košice, Slovak Republic

autor

Súth Róbert

Slovak University of Technology, Department of Chemical and Biochemical Engineering, Faculty of Chemical and Food Technology, Bratislava, Slovak Republic

autor

Nagy Karol

Slovak University of Technology, Department of Chemical and Biochemical Engineering, Faculty of Chemical and Food Technology, Bratislava, Slovak Republic

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)

Typ dokumentu

Bibliografia

Identyfikator YADDA

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