Energy and Economical Analysis of Drying Process of Domestic Wastewater Treatment Sludge with Heat Pump

Selman Cagman; Ümit Ünver; Ozan Efe

Makale detayları

Energy and Economical Analysis of Drying Process of Domestic Wastewater Treatment Sludge with Heat Pump

Yazarlar:

Selman Cagman | Ümit Ünver | Ozan Efe

Yayıncı:

Duzce University

Ana Başlıklar:

Yenilenebilir Enerji Sistemleri | Enerji Verimliliği

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.13 Issue 1, pp.95-107

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001339855

pISSN:

2148-2446

Anahtar kelimeler:

Özet:

 In this study, a heat pump was designed to dry the sludge produced by a wastewater treatment plant. The purpose of drying the sludge is to convert it into raw material as fuel pellets, which can provide some or all of the energy needed by the treatment plant. The design of the heat pump considered the plants production capacity and sludge generation rate. All thermal analyses were carried out according to the First Law of Thermodynamics. The heat pump system performances are investigated by using Danfoss Coolselector 2.0 program. The capacities of the heat pump components were calculated for different refrigerants and performance coefficients. The highest coefficient of performance CoP was found to be 5.99 for R1234zeE in summer, while the lowest was 2.33 for R134a. If the sludge is burned as biofuel, theoretically it was estimated that the energy production could range from 723,000 kWhmonth to 744,000 kWhmonth for the R407c and R1234zeE refrigerants respectively. The economic analysis showed that the systems payback period could range from 1.9 to 6.5 years.

 In this study, a heat pump was designed to dry the sludge produced by a wastewater treatment plant. The purpose of drying the sludge is to convert it into raw material as fuel pellets, which can provide some or all of the energy needed by the treatment plant. The design of the heat pump considered the plants production capacity and sludge generation rate. All thermal analyses were carried out according to the First Law of Thermodynamics. The heat pump system performances are investigated by using Danfoss Coolselector 2.0 program. The capacities of the heat pump components were calculated for different refrigerants and performance coefficients. The highest coefficient of performance CoP was found to be 5.99 for R1234zeE in summer, while the lowest was 2.33 for R134a. If the sludge is burned as biofuel, theoretically it was estimated that the energy production could range from 723,000 kWhmonth to 744,000 kWhmonth for the R407c and R1234zeE refrigerants respectively. The economic analysis showed that the systems payback period could range from 1.9 to 6.5 years.

 In this study, a heat pump was designed to dry the sludge produced by a wastewater treatment plant. The purpose of drying the sludge is to convert it into raw material as fuel pellets, which can provide some or all of the energy needed by the treatment plant. The design of the heat pump considered the plants production capacity and sludge generation rate. All thermal analyses were carried out according to the First Law of Thermodynamics. The heat pump system performances are investigated by using Danfoss Coolselector 2.0 program. The capacities of the heat pump components were calculated for different refrigerants and performance coefficients. The highest coefficient of performance CoP was found to be 5.99 for R1234zeE in summer, while the lowest was 2.33 for R134a. If the sludge is burned as biofuel, theoretically it was estimated that the energy production could range from 723,000 kWhmonth to 744,000 kWhmonth for the R407c and R1234zeE refrigerants respectively. The economic analysis showed that the systems payback period could range from 1.9 to 6.5 years.

 Bu çalışmada, bir atık su arıtma tesisi tarafından üretilen çamuru kurutmak için bir ısı pompası tasarlanmıştır. Çamurun kurutulmasının amacı, arıtma tesisin ihtiyaç duyduğu enerjinin bir kısmını veya tamamını sağlayabilecek yakıt peletleri olarak hammaddeye dönüştürmektir. Isı pompasının tasarımında tesisin üretim kapasitesi ve çamur üretim oranı dikkate alınmıştır. Tüm termal analizler Termodinamiğin Birinci Yasasına göre gerçekleştirilmiştir. Isı pompası sistem performansları Danfoss Coolselector 2.0 programı kullanılarak incelenmiştir. Isı pompası bileşenlerinin kapasiteleri farklı soğutucu akışkanlar ve performans katsayıları için hesaplanmıştır. En yüksek performans katsayısı CoP yaz aylarında R1234zeE için 5,99 olarak bulunurken, en düşük performans katsayısı R134a için 2,33 olarak bulunmuştur. Çamurun biyoyakıt olarak yakılması halinde, teorik olarak enerji üretiminin R407c ve R1234zeE soğutucu akışkanları için sırasıyla 723.000 kWhay ile 744.000 kWhay arasında değişebileceği tahmin edilmiştir. Ekonomik analiz, sistemin geri ödeme süresinin 1,9 ila 6,5 yıl arasında değişebileceğini göstermiştir.

Makale detayları

Energy and Economical Analysis of Drying Process of Domestic Wastewater Treatment Sludge with Heat Pump

Yazarlar:

Selman Cagman | Ümit Ünver | Ozan Efe

Yayıncı:

Duzce University

Ana Başlıklar:

Yenilenebilir Enerji Sistemleri | Enerji Verimliliği

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.13 Issue 1, pp.95-107

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001339855

pISSN:

2148-2446

Sludge

drying

heat pump

refrigerant

energy calculationArıtma çamuru

kurutma

ısı pompası

soğutucu akışkan

enerji hesabı

Sayı

Makale detayları

Yazarlar: Selman Cagman | Ümit Ünver | Ozan Efe

Yayıncı: Duzce University

Ana Başlıklar: Yenilenebilir Enerji Sistemleri | Enerji Verimliliği

Dergi: Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.13 Issue 1, pp.95-107

Belge Tipi: Makale

Yayın Tarihi: 1/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001339855

pISSN: 2148-2446

Sayı

Yazarlar:

Selman Cagman | Ümit Ünver | Ozan Efe

Yayıncı:

Duzce University

Ana Başlıklar:

Yenilenebilir Enerji Sistemleri | Enerji Verimliliği

Dergi:

Düzce Üniversitesi Bilim ve Teknoloji Dergisi Vol.13 Issue 1, pp.95-107

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001339855

pISSN:

2148-2446