Improving thermal resistance of lightweight concrete hollow bricks: A numerical optimisation research for a typical masonry unit

Erdem CUCE; Pinar Mert CUCE; Ahmet Burhaneddin BESİR

doi:https://doi.org/10.30521/jes.775961

Makale detayları

Improving thermal resistance of lightweight concrete hollow bricks: A numerical optimisation research for a typical masonry unit

Yazarlar:

Erdem CUCE | Pinar Mert CUCE | Ahmet Burhaneddin BESİR

Yayıncı:

Erol KURT

Ana Başlıklar:

Diğer mühendislik dalları

Dergi:

Journal of Energy Systems 2020 Vol.4 Issue 3, pp.121-144

Belge Tipi:

Makale

Yayın Tarihi:

9/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000505774

Sıklık:

Aylık

eISSN:

2602-2052

DOI:

https://doi.org/10.30521/jes.775961

Özet:

 

Heat loss/gain through the walls accounts for about 30% of the total building energy losses. Bricks are indispensable parts of buildings as a very common masonry wall unit; hence the present work aims at optimising thermal resistance of lightweight concrete hollow bricks through a CFD based numerical research. The optimisation is conducted over a certain number of independent variables such as hollow geometry and design, number of hollow rows across the heat transfer path and hollow depth for natural convection aspects within the hollow enclosure. A reliable CFD software ANSYS FLUENT 18.1 is utilised in the research. The accuracy of the CFD results is justified first through the reference model brick (RMB). Overall heat transfer coefficient (U-value) of RMB is determined to be 0.916 W/m2. K, which is in good accordance with the manufacturer’s data report (0.9 W/m2.K). Following this, parametric research is carried out for various scenarios to optimise the U-value as a function of brick mass. Based on the findings, the maximum improvement is found to be about 53% (U-value 0.43 W/m2. K) through the case of B48 which has an h-ratio of 1 (continuous hollow from top to bottom). Moreover, depending on the increase in h-ratio, it is achieved that the thermal performance of the bricks proportionally increases. The minimum weight of the brick design (B45) is found to be 7.645 kg and the corresponding U-value is obtained as 0.44 W/m2. K.

Makale detayları

Improving thermal resistance of lightweight concrete hollow bricks: A numerical optimisation research for a typical masonry unit

Yazarlar: Erdem CUCE | Pinar Mert CUCE | Ahmet Burhaneddin BESİR

Yayıncı: Erol KURT

Ana Başlıklar: Diğer mühendislik dalları

Dergi: Journal of Energy Systems 2020 Vol.4 Issue 3, pp.121-144

Belge Tipi: Makale

Yayın Tarihi: 9/2020

Belge Dili: İngilizce

Document ID (Org No.): 2000505774

Sıklık: Aylık

eISSN: 2602-2052

DOI: https://doi.org/10.30521/jes.775961

Sayı

Yazarlar:

Erdem CUCE | Pinar Mert CUCE | Ahmet Burhaneddin BESİR

Yayıncı:

Erol KURT

Ana Başlıklar:

Diğer mühendislik dalları

Dergi:

Journal of Energy Systems 2020 Vol.4 Issue 3, pp.121-144

Belge Tipi:

Makale

Yayın Tarihi:

9/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000505774

Sıklık:

Aylık

eISSN:

2602-2052

DOI:

https://doi.org/10.30521/jes.775961