Climate change and its role in forecasting energy demand in buildings: A case study of Douala City, Cameroon

Nematchoua, Modeste Kameni; Roshan, Gh. R.; Tchinda, René; Nasrabadi, Touraj; Ricciardi, Paola

doi:10.1007/s12040-014-0534-9

Cited by 23 publications

(6 citation statements)

References 17 publications

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“…From this table, it was observed that renovation allows reducing the energy consumption between 9.7% and 35.5% in these three cities. Furthermore, the energy demand is 63% higher in the coastal region than in high altitude regions, which confirms the previous study carried out by Nematchoua et al [29][30][31][32]. In particular, in Table 7, it can be observed that, after the revision process, the zero-energy objective is respected (the sum of the energy demand and the green energy generated by some photovoltaic panels (PV) is equal to zero).…”

Section: Case Of Residence Building Located In the Tropical Regionsupporting

confidence: 86%

Transition to Zero Energy and Low Carbon Emission in Residential Buildings Located in Tropical and Temperate Climates

Nematchoua¹,

Orosa

Ricciardi

et al. 2021

Energies

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Different methods to achieve zero-energy and low carbon on the scale of a building are shown by most of the research works. Despite this, the recommendations generally offered by researchers do not always correspond to the realities found during the construction of new buildings in a determined region. Therefore, a standard may not be valid in all climate regions of the world. Being aware of this fact, a study was carried out to analyse the design of new buildings respecting the “zero-energy and low carbon emission” concept in tropical climatic regions when they are compared with a base case of temperate regions. To reach this objective, the comparison between real and simulated data from the different buildings studied was developed. The results showed that the renovation of existing residential buildings allows for reducing up to 35% of energy demand and a great quantity of CO2 emissions in both climate types. Despite this, the investment rate linked to the construction of zero-energy buildings in tropical zones is 12 times lower than in temperate zones and the payback was double. In particular, this effect can be related to the efficiency of photovoltaic panels, which is estimated to be, at least, 34% higher in tropical zones than temperate zones. Finally, this study highlights the interest and methodology to implement zero-energy buildings in tropical regions.

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Section: Case Of Residence Building Located In the Tropical Regionsupporting

confidence: 86%

Transition to Zero Energy and Low Carbon Emission in Residential Buildings Located in Tropical and Temperate Climates

Nematchoua¹,

Orosa

Ricciardi

et al. 2021

Energies

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“…In this table, we can see that the passive strategy allows the improvement in indoor air (relative humidity and air temperature) between 10% and 25%, according to the cities and seasons. These results support the conclusions of several researchers who demonstrated that the application of passive strategy techniques can have a significant effect on the indoor climate [33,34]. Between 2017 and 2050, it is predicted that the indoor temperature will increase up to 1 • C, while the relative humidity will tend to decrease up to 5%.…”

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confidence: 89%

Energy Efficiency and Thermal Performance of Office Buildings Integrated with Passive Strategies in Coastal Regions of Humid and Hot Tropical Climates in Madagascar

2020

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Researchers have used passive strategies, such as the implementation of thermal insulation and the use of phase change materials (PCM), in several studies, but some problems have not yet been solved. It is the case of showing the real effect of external shading combined with thermal insulation and phase change materials to improve the thermal performance and energy efficiency of office buildings in tropical coastal areas. Another pending problem to be solved is to define the impact produced by passive strategies on the performance of workers in office buildings in coastal zones. It is with a view to answering all these questions that this study was envisaged with the main objective of evaluating, analyzing, comparing, and discussing the effect of thermal insulation and phase change materials on thermal comfort and energy demand in coastal areas of hot and humid tropical climates located in the island of Madagascar. In this sense, hourly climate data for the past 30 years have served as the basis for assessing environmental conditions of future climate. It was found that the PCMs have a more significant effect on the coastal zone of hot climates than humid tropical climates. The results of the statistical analyses showed that the application of passive strategies stabilizes indoor air temperatures to between 23 °C and 28 °C in the offices, which is the recommended comfort range in these regions. In the coastal regions of Madagascar, up to 30% of cooling energy is expected to be reduced by combining the introduction of thermal insulation and PCM materials.

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“…The different temperature variations in the different cities are shown in Table 5. This variation is almost identical to that observed in several countries in the Sub-Saharan Africa [46] .…”

Section: Case Of Variation In the Annual Maximum Temperaturesupporting

confidence: 88%

A study of climate change and energy consumption in Madagascar island

Nematchoua

2019

Health Environ

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Climate change effect can be either positive or negative on the human. Its impact on the energy consumption of a country for space heating and cooling purposes depends on the current and future regional climate, the required thermal comfort inside buildings, and the technical building features such as thermal insulation quality and occupants' habits. The aim of this research is to study the variation of the air temperature in several regions of Madagascar and then to simulate the impact of climate change on the need for energy consumption in household cooling and heating systems using degree-day index. The results showed that the temperature changes more rapidly in the rainy season than in the dry season. The energy demand for cooling is constantly growing in all the regions of Madagascar. Besides, an average around of 526 degree-day is expected in several regions of island by 2050. In the same year, air temperature is estimated to reach up to 2 • C.

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Climate change and its role in forecasting energy demand in buildings: A case study of Douala City, Cameroon

Cited by 23 publications

References 17 publications

Transition to Zero Energy and Low Carbon Emission in Residential Buildings Located in Tropical and Temperate Climates

Transition to Zero Energy and Low Carbon Emission in Residential Buildings Located in Tropical and Temperate Climates

Energy Efficiency and Thermal Performance of Office Buildings Integrated with Passive Strategies in Coastal Regions of Humid and Hot Tropical Climates in Madagascar

A study of climate change and energy consumption in Madagascar island

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