International Journal of Civil and Structural Engineering Research ISSN 2348-7607 (Online) Vol. 7, Issue 2, pp: (73-79), Month: October 2019 - March 2020, Available at: www.researchpublish.com
COMPARATIVE ANALYSIS ON GREEN ROOF ENERGY SAVINGS AND NORMAL CONVENTIONAL ROOF 1
Abdulkadir Abdulrahman Marafa, 2Halil Zafer Ali baba 1,2
Eastern Mediterranean University, Department Of Architecture Famagusta, North Cyprus, Via Mersin 10 Turkey
Abstract: Green roofs are considered to be an effective solution to improve internal and external environment at the building and urban levels. In comparison to conventional roofs, green roofs present many benefits, such as reducing the temperature of the roof surface and surrounding air, reducing the air pollution, mitigating noise, improving the management of runoff water, increasing the urban biodiversity, and the reducing the energy consumption of buildings, especially for cooling purposes, Research has shown that green roof temperatures can be 30–40°F lower than those of conventional roofs and can reduce city-wide ambient temperatures by up to 5°F. In addition, green roofs can reduce building energy use by 0.7% compared to conventional roofs. This paper will use, a dynamic simulation of a building situated in the Campus University of Palermo, Italy, in the comparative analysis of green roof energy saving and normal conventional roof showing the importance of green roof over normal conventional roof. Two different situations were taking into consideration; in the first one, the building as it is, with a conventional covering, while in the second one the roof was equipped with a green roof. The results of the two simulations have been compared, recommending that application of green roof could contribute to the energy savings of the building. Keywords: green roofs; energy building simulation; energy savings; green rooftop; black roof.
1. INTRODUCTION Green roof – sometimes referred to as living roof or vegetated roof, comprise of a waterproofing membrane, growing medium (soil) and vegetation (plants) overlying traditional roof. Green roofs are utilize to accomplish ecological advantages including decreasing storm water overflow, energy use, and the heat island effect. Urban areas are full with hardscapes, (Berardi et al 2014). These urban hardscapes, or intensely urbanized zones with regularly diminishing areas of available soil on which to plant vegetation, have lost the advantages that plants provide. Lack of advancement can prompt sewer floods and higher temperatures in urban communities and rural areas. Green rooftops are an innovation that can moderate a portion of the negative impacts of the urban hardscape by reintroducing a natural landscape into urban environment without making major changes to city infrastructure, Green space can give various social, natural and financial advantages to a region. Green rooftops include drainage and soil layers, installed on normal conventional roofing framework. There are two primary kinds of green roofs: extensive green roof, which are relatively inexpensive to install and also may not need irrigation, and intensive green roof permit a varieties of plants and are ordinarily nicer to look at, but are more expensive than intensive in terms of maintenance and installation (kumar et al 2005). Green rooftops, which spread structures with a layer of living plants, can help relieve various issues of the urban hardscape by bringing the natural cooling and water-treatment abilities of undeveloped territories into the urban environments. Architects and planners can utilize green rooftops to help take care of ecological issues by taking nature back to the city in key manners. While they are progressively prominent as an environmental solution, green rooftops are not new thoughts. They can be traced back as far as the hanging gardens of Babylon in 600 BC. Scandinavians have used sod rooftops for centuries, taking advantage of their insulate properties, and sod roofs were also found in the sod homes
Page | 73 Research Publish Journals