The effectiveness of duty cycling technique on air conditioning system during break period for comfort, energy and cost savings: a real case study in health center | [ARPN Journal of Engineering and Applied Sciences • 2024]

Author(s):

1. Mohamad Firdaus Sukri: Green and Efficient Energy Technology (GeEET) Research Group, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya Durian Tunggal, Melaka Malaysia; Faculty of Mechanical Technology and Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya Durian Tunggal, Melaka Malaysia

2. Musthafah Mohd. Tahir: Green and Efficient Energy Technology (GeEET) Research Group, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya Durian Tunggal, Melaka Malaysia; Faculty of Mechanical Technology and Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya Durian Tunggal, Melaka Malaysia

3. Mohamad Fani Sulaima: Faculty of Electrical Technology and Engineering,Universiti Teknikal,Malaysia Melaka, Hang Tuah Jaya Durian Tunggal, Melaka Malaysia

4. Noor Raffidah Haron: Health Center, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya Durian Tunggal,Melaka,Malaysia

5. Kasni Sumeru: Department of Refrigeration and Air Conditioning Engineering,Politeknik Negeri Bandung, Bandung,Indonesia

Abstract:

This paper investigates the potential of duty cycling techniques for air conditioning (AC) systems in producing energy and cost savings and the impact on the indoor thermal environment, air quality, and environmental sustainability. The real case study concentrated on energy consumption practice during the break period between 13:00 to 14:00 in a lobby area of a Health Center. Site data measurements of electrical input power, energy, indoor air temperature and humidity, and indoor carbon dioxide (CO2) concentration were conducted. Two zero-cost strategies were studied and results were compared to baseline conditions. In general, the results show that all strategies can meet the indoor thermal environment and air quality requirements, except room temperature for Strategy 2 which ranges on average between 26.71 to 26.82°C. In addition to the instant payback period (0 years), the results also indicate that as compared to baseline condition, Strategies 1 and 2 led to annual energy and cost savings of around 759.2 kWh (USD 64.40) and 1250.6 kWh (USD 106.08), respectively. In terms of environmental sustainability, Strategies 1 and 2 can avoid environmental CO2 emissions by 444.13 and 731.60 kg of CO2 per year, respectively. Due to these reasons and if the sensitivity of occupant comfort to room temperature during the break period can be tolerated, it is proposed that Strategy 2 is the best option for the AC system operation during the break period. Considering other buildings also adopted the same strategy, this small action can lead to a high impact, not only on energy and cost savings but also on environmental sustainability in the future.

Page(s): 843-853

DOI: DOI not available

Published: Journal: ARPN Journal of Engineering and Applied Sciences, Volume: 19, Issue: 13, Year: 2024

Keywords:

Energy Saving , air conditioning system , cost saving , duty cycling technique , zero cost measure

References:

[1] Asif Alazazmeh A.,M. Alazazmeh A. .2021 .Commercial building retrofitting: Assessment of improvements in energy performance and indoor air quality. Case Studies in Thermal Engineering, 26 : 100946.

[2] .2021 .. , 100946 : .

[3] Department .2014 .Energy efficiency and use of renewable energy for nonresidential buildings - Code of practice (Second revision). , : .

[4] Dorokhova M.,Ballif C.,Wyrsch N. .2020 .Rule-based scheduling of air conditioning using occupancy forecasting. Energy and AI, 2 : 100022.

[5] Commission Energy .2020 .Suruhanjaya Tenaga (Energy Commission). Malaysia Energy Statistics Handbook, : .

[6] To Forbes. 2022. MYR,Advisor USD,Eynard J.,Caussanel M.,Grieu S. .2015 .. Retrieved November 2, : .

[7] Soft Computing Applied . .. , 37 : 847-862.

[8] Haniff M. F.,Selamat H.,Yusof R.,Buyamin S.,Ismail F. S. .2013 .Review of HVAC scheduling techniques for buildings towards energy-efficient and costeffective operations. Renewable and Sustainable Energy Reviews, 27 : 94-103.

[9] Green Technology Corporation Malaysian .2019 .2017 CDM electricity baseline for Malaysia, Malaysian Green Technology Corporation. , 06 : .

[10] and Mat Dan R. .2012 .An analytical investigation of overall thermal transfer value on a commercial building in Malaysia. International Review of Mechanical Engineering, 6(5) : 1050-1056.

[11] . .Achieving a better energy-efficient automotive airconditioning system: a review of potential technologies and strategies for vapor compression refrigeration cycle. , : .

[12] Efficiency Energy . .. , 8 : 1201-1229.

[13] Sukri M. F.,Lokman R.,Muhajir A.,Wasbari F.,Muhamad Damanhuri A. A.,Sumeru K. .2020 .The effect of condensate water on the performance of automotive air conditioning systems under different evaporator air inlet temperatures. International Journal of Nanoelectronics and Materials, 13 : 85-94.

[14] and MuliawaN R. .2021 .Experimental evaluation on a centralized air conditioning system embedded with a splittype air conditioner as a dedicated subcooler. Journal of Building Engineering, 43 : 102585.

[15] .2021 .. , 102585 : .

[16] Sumeru K.,Sukri M. F.,Falahuddin M. A.,Setyawan A. .2019 .A review on sub-cooling in vapor compression refrigeration cycle for energy saving. Jurnal Teknologi, 81(5) : 13707-170.

[17] Nasional Berhad Tenaga .2022 .. , : .

[18] Do T. A.,Suttakul P.,Mona Y. .2021 .. Retrieved November 2, : .

[19] . .Energy reduction of split-type air conditioners using a precooling system for the condenser. Energy Reports, 7 : 1-6.

[20] .2021 .. , 05 : .

[21] Zhao Xue Y.,Ge K.,J. K.,Yang K.,Hwang R.,Tu S. .1992 .The duty cycle airconditioning operation and its energy impact evaluation on buildings. SAE Technical Paper 929165., 29 : .

[22] Pei N.,Liu L.,Fan M.,Qin Y. .2021 .. , : .

[23] . .Experimental study on the effect of condensate water on the performance of split air conditioning system. Energy Reports, 7 : 840-851.

[24] .2021 .. , 01 : .

Citations

Citations are not available for this document.

Citations

Downloads

Views