Life Cycle and Emissions Analysis Based on Different Degree-Day Approaches of Earth-Air Heat Exchangers Used for Heating and Cooling in Buildings

Okan Kon; Samet Arda

Makale detayları

Life Cycle and Emissions Analysis Based on Different Degree-Day Approaches of Earth-Air Heat Exchangers Used for Heating and Cooling in Buildings

Yazarlar:

Okan Kon | Samet Arda

Yayıncı:

Dokuz Eylul University

Ana Başlıklar:

Mühendislik

Dergi:

Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 73, pp.91-106

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001281965

pISSN:

1302-9304

Anahtar kelimeler:

Özet:

 In this study, energy saving and energy cost saving based on the life cycle analysis were examined considering the last two versions of TS 825, depending on the earth-air heat exchanger used for heating and cooling the buildings. In addition, the amounts of emissions pollutants emitted to the atmosphere as a result of the use of electricity as an energy source during electricity generation from power plants were investigated. For the amount of electrical energy used, the heat transfer coefficients of the building envelope covering the external wall, ceilings, floors, and windows, which are recommended in our countrys insulation standard TS 825, were used. Energy-saving amounts were determined by using the building envelope heat transfer coefficients in the 2013 version and the 2008 version of TS 825. The degree-day method was used in the energy consumption calculations related to the building envelope elements. The heating degree days and cooling degree days used in the energy consumption calculations of the buildings during the heating and cooling periods were calculated depending on the outdoor dry bulb temperature, the wet bulb temperature found with the relative humidity, the solar radiation value and the solar air temperature found. As pollutants, substances affecting global warming CO2, N2O, CH4, ozone depleting substance CFC-11, inorganic pollutant SO2, air polluting particulate matter PM were examined. By using the 2013 version of TS 825 instead of 2008, savings of up to 4.9  are achieved for all degree-day approaches, considering all four climate zones connected to external walls and flooring. There is a savings of up to 6.0  due to flooring. According to the energy consumption and emission values related to the window, the savings have been determined as 25  for all climate zones.

 In this study, energy saving and energy cost saving based on the life cycle analysis were examined considering the last two versions of TS 825, depending on the earth-air heat exchanger used for heating and cooling the buildings. In addition, the amounts of emissions pollutants emitted to the atmosphere as a result of the use of electricity as an energy source during electricity generation from power plants were investigated. For the amount of electrical energy used, the heat transfer coefficients of the building envelope covering the external wall, ceilings, floors, and windows, which are recommended in our countrys insulation standard TS 825, were used. Energy-saving amounts were determined by using the building envelope heat transfer coefficients in the 2013 version and the 2008 version of TS 825. The degree-day method was used in the energy consumption calculations related to the building envelope elements. The heating degree days and cooling degree days used in the energy consumption calculations of the buildings during the heating and cooling periods were calculated depending on the outdoor dry bulb temperature, the wet bulb temperature found with the relative humidity, the solar radiation value and the solar air temperature found. As pollutants, substances affecting global warming CO2, N2O, CH4, ozone depleting substance CFC-11, inorganic pollutant SO2, air polluting particulate matter PM were examined. By using the 2013 version of TS 825 instead of 2008, savings of up to 4.9  are achieved for all degree-day approaches, considering all four climate zones connected to external walls and flooring. There is a savings of up to 6.0  due to flooring. According to the energy consumption and emission values related to the window, the savings have been determined as 25  for all climate zones.

 In this study, energy saving and energy cost saving based on the life cycle analysis were examined considering the last two versions of TS 825, depending on the earth-air heat exchanger used for heating and cooling the buildings. In addition, the amounts of emissions pollutants emitted to the atmosphere as a result of the use of electricity as an energy source during electricity generation from power plants were investigated. For the amount of electrical energy used, the heat transfer coefficients of the building envelope covering the external wall, ceilings, floors, and windows, which are recommended in our countrys insulation standard TS 825, were used. Energy-saving amounts were determined by using the building envelope heat transfer coefficients in the 2013 version and the 2008 version of TS 825. The degree-day method was used in the energy consumption calculations related to the building envelope elements. The heating degree days and cooling degree days used in the energy consumption calculations of the buildings during the heating and cooling periods were calculated depending on the outdoor dry bulb temperature, the wet bulb temperature found with the relative humidity, the solar radiation value and the solar air temperature found. As pollutants, substances affecting global warming CO2, N2O, CH4, ozone depleting substance CFC-11, inorganic pollutant SO2, air polluting particulate matter PM were examined. By using the 2013 version of TS 825 instead of 2008, savings of up to 4.9  are achieved for all degree-day approaches, considering all four climate zones connected to external walls and flooring. There is a savings of up to 6.0  due to flooring. According to the energy consumption and emission values related to the window, the savings have been determined as 25  for all climate zones.

 Çalışmada, binaların ısıtılması ve soğutulması için kullanılan toprak hava ısı değiştirgeci bağlı olarak TS 825 in son iki versiyonu düşünülerek yaşam çevrimi analizine bağlı hem enerji tasarrufu hem de enerji maliyeti tasarrufu incelenmiştir. Ek olarak enerji kaynağı olarak elektrik kullanımına bağlı güç santrallerinden elektrik üretimi sırasında atmosfere yayılan emisyonların kirleticilerin miktarları incelenmiştir. Kullanılan elektrik enerjisi miktarı için ülkemizin yalıtım standardı TS 825 de tavsiye edilen dış duvar, tavan, döşeme ve pencereleri kapsayan yapı kabuğu ısı transfer katsayıları kullanılmıştır. TS 825 in 2013 versiyonu ve 2008 yılı versiyonu yapı kabuğu ısı transfer katsayıları kullanılarak enerji tasarruf miktarları tespit edilmiştir. Yapı kabuğu elemanlarına bağlı enerji tüketimi hesaplamalarında derece gün yöntemi kullanılmıştır. Isıtma ve soğutma dönemlerinde binaların enerji tüketimi hesaplarında kullanılan ısıtma derece gün ve soğutma derece günler, dış ortam kuru termometre sıcaklığına, bağıl nem ile bulunan yaş termometre sıcaklığına ve güneş radyasyonu değeri ile bulunan güneş hava sıcaklığı bağlı olarak hesaplanmıştır. Kirletici olarak, global ısınmayı etkileyen maddeler CO2, N2O, CH4, ozon tabakasını incelten madde CFC-11, inorganik kirletici madde SO2, havayı kirleten partikül madde PM incelenmiştir. TS 825 in 2008 yerine 2013 versiyonu kullanılması ile tüm derece gün yaklaşımları için dış duvarlara ve döşemeye bağlı dört iklim bölgesinin tümü göz önüne alındığında  4,9 kadar tasarruf sağlanmaktadır. Döşemeye bağlı  6,0 kadar tasarruf bulunmaktadır. Pencereye bağlı enerji tüketimi ve emisyon değerlerine göre tasarruf tüm iklim bölgeleri için  25 olarak tespit edilmiştir.

Makale detayları

Life Cycle and Emissions Analysis Based on Different Degree-Day Approaches of Earth-Air Heat Exchangers Used for Heating and Cooling in Buildings

Yazarlar:

Okan Kon | Samet Arda

Yayıncı:

Dokuz Eylul University

Ana Başlıklar:

Mühendislik

Dergi:

Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 73, pp.91-106

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001281965

pISSN:

1302-9304

Earth-air heat exchanger

Degree-day

Power plants

Pollutants

Toprak hava ısı değiştirgeci

TS 825

Derece-gün

Güç santralleri

Kirleticiler

Earth-air heat exchanger

Degree-day

Power plants

Pollutants

Sayı

Makale detayları

Yazarlar: Okan Kon | Samet Arda

Yayıncı: Dokuz Eylul University

Ana Başlıklar: Mühendislik

Dergi: Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 73, pp.91-106

Belge Tipi: Makale

Yayın Tarihi: 1/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001281965

pISSN: 1302-9304

Sayı

Yazarlar:

Okan Kon | Samet Arda

Yayıncı:

Dokuz Eylul University

Ana Başlıklar:

Mühendislik

Dergi:

Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi Vol.25 Issue 73, pp.91-106

Belge Tipi:

Makale

Yayın Tarihi:

1/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001281965

pISSN:

1302-9304