Energy Evaluation and Energy Savings Analysis with the 2 Selection of AC Systems in an Educational Building

Morejón, Milen Balbis; Cabello‐Eras, Juan José; Rey-Hernández, Javier M.; Martı́nez, Francisco Javier Rey

doi:10.3390/su13147527

Cited by 10 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analysis results confirmed that air conditioners were the highest energyconsuming equipment in all the academic departments studied. These results support the findings of a study conducted by previous authors [43][44][45][46][47] where air conditioning systems consume the highest electrical energy in the office or educational building. According to Tables 4 and 5 and Figure 1, From the graph, the air-conditioning and laboratory equipment at MED has a high impact on energy consumption of almost 230,000 kWh and energy bills of more than RM 80,000 per year.…”

Section: Equipment Proposed For Energy Efficiency Improvementsupporting

confidence: 91%

Energy Efficiency and Feasibility Analysis of Solar Power Generation Using Hybrid System of an Educational Institution in Malaysia

Zublie

Hasanuzzaman

Rahim

2023

International Journal of Photoenergy

View full text Add to dashboard Cite

Energy is one of the basic inputs and driving forces for economic and social development modernization. Sustainable energy supply is one of the major challenges in the modern world. Sustainable energy supply can be obtained through alternative energy sources, and efficient energy use is a high priority to optimize the environmental impact. This paper investigates the potential for energy savings involving five end-load equipment in academic institutions. The saving potential is obtained through energy efficiency analysis and feasibility analysis of the solar power generation systems. An energy audit is conducted on end-use consuming equipment (i.e., fans, lights, air conditioning, ICT equipment, etc.) in these five end-load sectors to find out the major energy-consuming equipment, energy consumption, and potential energy savings. The analysis of energy consumption per equipment helps determine the appropriate type of equipment to be upgraded and replaced for energy saving. The feasibility of rooftop solar power generation has been also analysed to integrate into the energy end load. The research findings confirm that laboratory equipment, lighting, and air conditioning are vital to energy consumption in academic buildings. The energy savings, bill savings, and carbon emissions reductions have been estimated based on integrating rooftop solar power generation. The feasibility analysis of onsite energy generation using a hybrid solar system found that the total energy-saving potential and bill savings within five years are 311,131 kWh and RM 113,563, respectively. This value refers to comprehensive energy-saving and bill for all academic buildings involved in this research.

show abstract

Section: Equipment Proposed For Energy Efficiency Improvementsupporting

confidence: 91%

Energy Efficiency and Feasibility Analysis of Solar Power Generation Using Hybrid System of an Educational Institution in Malaysia

Zublie

Hasanuzzaman

Rahim

2023

International Journal of Photoenergy

View full text Add to dashboard Cite

show abstract

“…The energy consumption obtained from the simulated building is also necessary in order to calculate the operating and maintenance costs. Usually, the lifespan of AC systems' design is over 20 years, and total NPV is calculated using Equation (4) [34]:…”

Section: Life Cycle Cost (Lcc) Of Ac Systemmentioning

confidence: 99%

Energy Performance of a University Building for Different Air Conditioning (AC) Technologies: A Case Study

Balbis-Morejón,

Cabello-Eras,

Rey-Martínez

et al. 2024

Buildings

Self Cite

View full text Add to dashboard Cite

The study uses four AC technologies to assess the energy performance—this is a case study of an educational building in Barranquilla, Colombia. The building currently has split AC technology high-energy consumers. Therefore, it was necessary to assess a replacement with more efficient technology. Because of the non-seasonal climate in the building location, one month of monitoring of energy consumption was the reference for developing an energy model for the building using EnergyPlus and DesignBuilder software. The model was applied to forecast the building energy performance of our more efficient AC technologies available in the Colombian market, and valuable according to building specifications (Split, VRF, VAV, and Chiller). Results show a reduction in energy consumption of approximately 30% with the technology change and 15% savings in life cycle costs (LCCs), even though the building is already considered to have a low energy consumption according to national regulations. The findings of this study underscore the potential for widespread applicability across all types of buildings, regardless of their energy consumption profile, be it low, medium, or high. This extensive applicability not only highlights the adaptability and versatility of the technology but also underscores its significance in achieving substantial energy savings and cost reductions across the entire building industry, contributing to a more sustainable and economically efficient future.

show abstract

“…The life cycle cost (LCC) analysis adopted in this paper is very similar to that reported in the literature [32][33][34][35][36][37]. The net present value (NPV) is adopted in this paper to determine the LCC for both refrigeration systems.…”

Section: Life Cycle Cost Analysismentioning

confidence: 99%

Comparison between Variable and Constant Refrigerant Flow Air Conditioning Systems in Arid Climate: Life Cycle Cost Analysis and Energy Savings

Atallah

Tarlochan

2021

Sustainability

View full text Add to dashboard Cite

All over the world, there is a call to encourage sustainable energy thinking and implementation. There is an urgent need to consider sustainable solutions in any design projects that are able to reduce energy consumption. In the heating, ventilation, and air conditioning field, the rise of the variable refrigerant flow systems has made big progress. This study presents a life cycle cost analysis to evaluate the economic feasibility of constant refrigerant flow (CRF), and in particular, the conventional ducted unit air conditioning system and the variable refrigerant flow (VRF) system by using detailed cooling load profiles, as well as initial, operating, and maintenance costs. Two operating hours scenarios are utilized and the present worth value technique for life cycle cost analysis is applied to an existing office building located in Qatar, which can be conditioned by CRF and VRF systems. The results indicate that, although the initial cost of the VRF system is higher than that of the CRF system by 23%, the present worth cost of the VRF system is much lower than that of the CRF system at the end of the lifetime due to lower operating costs. There is also a significant energy saving of 27% by using VRF compared to the CRF. The implementation of these results on a national scale will promote the use of sustainable energy technologies such as the VRF system.

show abstract

Energy Evaluation and Energy Savings Analysis with the 2 Selection of AC Systems in an Educational Building

Cited by 10 publications

References 35 publications

Energy Efficiency and Feasibility Analysis of Solar Power Generation Using Hybrid System of an Educational Institution in Malaysia

Energy Efficiency and Feasibility Analysis of Solar Power Generation Using Hybrid System of an Educational Institution in Malaysia

Energy Performance of a University Building for Different Air Conditioning (AC) Technologies: A Case Study

Comparison between Variable and Constant Refrigerant Flow Air Conditioning Systems in Arid Climate: Life Cycle Cost Analysis and Energy Savings

Contact Info

Product

Resources

About