Building to Net Zero in the Developing World

Hoque, Shamia; Iqbal, Nabila

doi:10.3390/buildings5010056

Cited by 15 publications

(10 citation statements)

References 13 publications

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“…Moreover, in Argentina, under the same Cfa climate, the same original U-value was encountered for reaching nZEB [35] for different building types, but to achieve NZEB the improved case presented U-values lower than the original [28] (Table 3). On the other hand, to achieve NZEB, the improved U-values differed significantly in studies based in countries with an Af climate, such as Brazil [39] and Panama [54] (Table 3), despite the same type of building being analyzed (Table 1). An agreement is encountered under the same type of climate, Aw [43,55], for the improved U-values in walls and windows, despite different building types, to achieve nZEB/NZEB (Table 3).…”

Section: Envelope Transmittance Values According To Climatementioning

confidence: 94%

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Review of Zero Energy Building Concept-Definition and Developments in Latin America: A Framework Definition for Application in Panama

2021

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In recent decades, European countries have developed concepts, definitions, and construction technologies for Zero Energy Building (ZEB) that are effective and correspond to their specific climates. Latin American countries are still trying to find adequate solutions which respond to the local climatic, cultural, social, technical, and economic context. As such, this paper aims to establish the basis of the minimum energy efficiency and the renewable threshold for the definition of ZEB in order to better understand the application in Panama, based on assessing the energy regulations implemented in Panama. To achieve this aim, a review concentrated on the concept-definition and implementation adopted by Latin American countries is presented first before the paper converges into defining a framework for application in Panama. Finally, a case-study-based theoretical framework proposing a ZEB definition for Panama is discussed. The results of this study showed a net primary energy balance, of which the range falls into a plus energy building definition, indicating that all of the cases studied could supply their electricity needs using Photovoltaic generation. All dwellings studied have the potential to become a plus energy building, depending on the available roof surface area. Finally, a strengths, weaknesses, opportunities and threats analysis is presented in order to assess and support the introduction of such a ZEB definition and framework.

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Section: Envelope Transmittance Values According To Climatementioning

confidence: 94%

“…This tendency follows the ZEB philosophy, as shown in Figure 7. In fact, it can be observed that NZEB can be reached by applying only passive solutions, regardless of the type of climate (Figure 8a) [35,39,40,42,[45][46][47]51,54,55].…”

Section: Zeb Type and Energy Saving Strategies According To Climatementioning

confidence: 99%

Review of Zero Energy Building Concept-Definition and Developments in Latin America: A Framework Definition for Application in Panama

2021

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“…In this study, a net-zero energy building is regarded as a building with reduced energy needs [9] and generates more energy than it consumes from renewable energy sources [10]. According to Malaysia's energy statistics, energy consumption per capita has steadily increased throughout the years [11].…”

Section: Literature Reviewmentioning

confidence: 99%

Potential for Net-zero Energy in an Artificially Ventilated Single-family Dwelling Unit

Oguntade

Koriko

Ademiloye

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Net-zero energy buildings are buildings that consume less energy than other similar buildings, producing as much energy as it uses or more, from a renewable energy source. Buildings are, without a doubt, one of the key contributors to energy-related emissions. It is important to design buildings that need less energy. Using DesignBuilder, this research explores the potential for net-zero energy in an artificially ventilated single-family dwelling unit in Kuala Lumpur Subang, Malaysia. To achieve net-zero energy five steps are taken; step one involves determining the most energy-efficient glazing, step two involves investigating the most energy-efficient wall material, the next step considers the best window-to-wall ratio, the fourth includes the use of external shading devices and the final step introduces the use of roof installed solar panels. One of the key findings was that shading either through external shading devices or through more efficient glazing reduced the overall energy use and that as the energy needed for cooling reduced as a result of shading the energy needed for lighting slightly increased. The research also revealed that the energy consumption reduced as the wall insulation increased and that bricks/block walls were more energy-efficient than wooden walls without insulation. During the third phase of the research, findings revealed that the energy efficiency of the walls and the windows were the determining factor for which window-to-wall ratio was best. In all, net-zero energy was achieved by reducing the energy consumption by 73.4% and by generating more energy than the building consumes from photovoltaic cells.

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“…The cooling system of a building is a part of its HVAC system. Examples of various cooling systems are passive cooling (sea breeze) supported by a heat absorption element [75], radiant cooling and underfloor air supply based on absorption chillers and electric chillers, air-soil heat exchanger, and concrete core activation based on a solar absorption chiller [76]. Actually, the HVAC system is the most significant energy consumer in the building [12].…”

Section: Cooling Systemmentioning

confidence: 99%

A review on the impact of building design and operation on buildings cooling loads

Anaya¹,

Hou²,

Hassan³

et al. 2022

Int. J. EQ

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Energy consumption in buildings is considerably high in areas of hot and humid climates due to its association with high cooling loads. Electricity grids are highly affected by the consumption of cooling systems like air-conditioning and large refrigeration facilities, which significantly impact the economic and environmental sectors. As building design and operating parameters influence the cooling demand in the building, it is believed the root cause of the problem may be detected at an early building design stage. Thus, this review identifies the building design parameters that impact the cooling loads in buildings that are geographically restricted to countries with hot and humid climates. The building's design characteristics are classified into four main categories: glass characteristics, wall characteristics, building orientation and dimensions (BO & D), and building cooling system. The review was conducted over high-rise and low-rise buildings. Annual energy requirements (in some cases overlapping with electricity consumption), annual cooling loads, and peak cooling loads are the three forms in which energy demand reductions in buildings are represented. It is found that maximum annual cooling load savings are obtained through cooling systems, followed by wall characteristics, then glass characteristics, with the least for BO & D, with maximum reductions of up to 61%, 59%, 55%, and 21%, respectively. As for the peak cooling load reductions, wall characteristics, cooling systems, and glass characteristics had almost the same average values of 18.7%, 15.2%, and 17.2%, respectively, while BO & D are not reported due to the incomparable number of case studies. The parameters that have the most influence on reductions in peak cooling loads are wall and glass characteristics. In general, savings that are associated with wall characteristics are more significant for low-rise buildings than for high-rise buildings, while the latter is more influenced by glass characteristics. This is a reasonable conclusion since high-rise buildings, in general, acquire higher window-to-wall ratios than the former. In general, most studies considered glass characteristics, while fewer studies considered BO & D. This review has shown various aspects that are vital in studying building cooling load demand and its related energy performance.

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Building to Net Zero in the Developing World

Cited by 15 publications

References 13 publications

Review of Zero Energy Building Concept-Definition and Developments in Latin America: A Framework Definition for Application in Panama

Review of Zero Energy Building Concept-Definition and Developments in Latin America: A Framework Definition for Application in Panama

Potential for Net-zero Energy in an Artificially Ventilated Single-family Dwelling Unit

A review on the impact of building design and operation on buildings cooling loads

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