Numerical study the effect of inlet and outlet ventilation configurations for passive cooling air conditioning system

Arrad Ghani Safitra, Lohdy Diana, Joke Pratilastiarso, Nur Hidayat

Abstract


The application of Green Energy Technology through Passive Cooling System is the right solution. It aims to achieve energy savings and reduce CO2 emissions. This study focuses on the simulation of room conditions using the computational fluid method. The simulation aims to determine the effect of inlet and outlet configuration against the air condition in the room. The results presented in this simulation are the distribution of air temperature, air humidity, and air velocity. The variations used in the simulation are the air inlet and outlet positions, there are three configurations of air inlet and outlet positions. Variation 1: two inlets – one outlet, Variation 2: two inlets – two outlets, Variation 3: four inlets – three outlets. The results of the study show Variation 3 has the best design if cooling or heating equipment wants to be added, for example passive cooling in summer and a heater for cold weather. On other hand, Variation 1 is the most effective in maintaining the stability of humidity distribution and air velocity within the room. This configuration successfully creates optimal ventilation by generating efficient natural convection without significant fluctuations, achieved using two inlets and one active outlet

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D. Ürge-vorsatz, L. F. Cabeza, S. Serrano, and C. Barreneche, “Heating and cooling energy trends and drivers in buildings,” Renew. Sustain. Energy Rev., vol. 41, pp. 85–98, 2015.

I. Inayati, F. X. N. Soelami, and R. Triyogo, “Identification of existing office buildings potential to become green buildings in energy efficiency aspect,” Procedia Eng., vol. 170, pp. 320–324, 2017.

X. Lu, P. Xu, H. Wang, T. Yang, and J. Hou. (2016). Cooling potential and applications prospects of passive radiative cooling in buildings: The current state-of-the-art,” Renew. Sustain. Energy Rev., vol. 65, pp. 1079–1097.

A. M. Omer. (2008). Energy, environment and sustainable 5. Conclusions (a) (b) 16 ITB Solar Thermal Engineering Journal (2019) development,” vol. 12, pp. 2265–2300.

International Energy Agency, “Energy Efficiency: Cooling.” [Online]. Available: https://www.iea.org/topics/energyefficiency/buildings/co oling/. [Accessed: 08-Mar-2019].

Kiyan Vadoudi. “Development of Psychrometric diagram for the energy efficiency of Air Handling Units”. International Journal of Ventilation 3(5):491. 2018

Abedrabboh, O., Koç, M., & Biçer, Y. “Sustainable food development for societies in hot arid regions: Thermoeconomic assessment of passive-cooled soil-based and hydroponic greenhouses”. Journal of Cleaner Production, 412, 137250. https://doi.org/10.1016/j.jclepro.2023.137250 . 2023.

Nazari, M., Karami, M., & Ashouri, M., “Comparing the thermal performance of water, Ethylene Glycol, Alumina and CNT nanofluids in CPU cooling: Experimental study”. Experimental Thermal and Fluid Science, 57, 371-377. http://dx.doi.org/10.1016/j.expthermflusci.2014.06.003 . 2014.

Mutuku, W. N, “Ethylene glycol (EG)-based nanofluids as a coolant for automotive radiator. Asia Pacific Journal on Computational Engineering”, 3, 1-15. DOI 10.1186/s40540-016-0017-3. 2016.

Khatri, R., Singh, A. P., & Khare, V. R. “Identification of Ideal Air Temperature Distribution using different location for Air Conditioner in a room integrated with EATHE–A CFD based approach”. Energy Procedia, 109, 11-17. http://dx.doi.org/10.1016/j.desal.2017.10.025. 2017

Liu, B. “Research on Liquid Cooling Technology and its Application in Wireless Charging. In IOP Conference Series: Earth and Environmental Science (Vol. 571, No. 1, p. 012020). IOP Publishing. (2020, November). doi:10.1088/1755-1315/571/1/012020

B. Pirouz, S. A. Palermo, S. N. Naghib, D. Mazzeo, M. Turco, and P. Piro, “The role of hvac design and windows on the indoor airflow pattern and ach,” Sustainability (Switzerland), vol. 13, no. 14, Jul. 2021, doi: 10.3390/su13147931.

T. Lipinski, D. Ahmad, N. Serey, and H. Jouhara, “Review of ventilation strategies to reduce the risk of disease transmission in high occupancy buildings,” International Journal of Thermofluids, vol. 7–8, Nov. 2020, doi: 10.1016/j.ijft.2020.100045.

H. Chen, Z. Feng, and S. J. Cao, “Quantitative investigations on setting parameters of air conditioning (air-supply speed and temperature) in ventilated cooling rooms,” Indoor and Built Environment, vol. 30, no. 1, pp. 99–113, Jan. 2021, doi: 10.1177/1420326X19887776.

R. Z. Homod, A. Almusaed, A. Almssad, M. K. Jaafar, M. Goodarzi, and K. S. M. Sahari, “Effect of different building envelope materials on thermal comfort and air-conditioning energy savings: A case study in Basra city, Iraq,” J Energy Storage, vol. 34, Feb. 2021, doi: 10.1016/j.est.2020.101975.

N. R. M. Sakiyama, J. Frick, T. Bejat, and H. Garrecht, “Using cfd to evaluate natural ventilation through a 3d parametric modeling approach,” Energies (Basel), vol. 14, no. 8, Apr. 2021, doi: 10.3390/en14082197.

S. Golder, R. Narayanan, M. R. Hossain, and M. R. Islam, “Experimental and cfd investigation on the application for aerogel insulation in buildings,” Energies (Basel), vol. 14, no. 11, Jun. 2021, doi: 10.3390/en14113310.

C. Harsito and A. N. S. Permata, “Investigation of air distribution in mosque rooms with different angles of supply and inlet velocity,” International Journal of Heat and Technology, vol. 39, no. 4, pp. 1383–1388, Aug. 2021, doi: 10.18280/ijht.390439.

M. Alkhalaf, A. Ilinca, M. Y. Hayyani, and F. Martini, “Impact of Diffuser Location on Thermal Comfort Inside a Hospital Isolation Room,” Designs (Basel), vol. 8, no. 2, p. 19, Feb. 2024, doi: 10.3390/designs8020019.

Jo, S., Kim, G., & Sung, M., . “A study on contaminant leakage from Airborne Infection Isolation room during medical staff entry; Implementation of walking motion on hypothetical human model in CFD simulation”. Journal of Building Engineering, 108812. 2024. doi.org/10.1016/j.jobe.2024.108812

N. A. M. Zainuddin, F. Jerai, A. A. Razak, and M. F. Mohamad, “Accuracy of CFD Simulations on Indoor Air Ventilation: Application of Grid Convergence Index on Underfloor Air Distribution (UFAD) System Design,” Journal of Mechanical Engineering, vol. 20, no. 3, pp. 199–222, 2023, doi: 10.24191/jmeche.v20i3.23908.

A. Raczkowski, Z. Suchorab, and P. Brzyski, “Computational fluid dynamics simulation of thermal comfort in naturally ventilated room,” MATEC Web of Conferences, vol. 252, p. 04007, 2019, doi: 10.1051/matecconf/201925204007.

G. Pichurov, P. Stankov, and D. Markov, “HVAC control based on CFD analysis of room airflow,” in IFAC Proceedings Volumes (IFAC-PapersOnline), IFAC Secretariat, 2006, pp. 213–218. doi: 10.3182/20061002-4-bg-4905.00036.

R. Widiastuti, M. I. Hasan, C. N. Bramiana, and P. U. Pramesti, “CFD Simulation on the Natural Ventilation and Building Thermal Performance,” in IOP Conference Series: Earth and Environmental Science, Institute of Physics Publishing, Apr. 2020. doi: 10.1088/1755-1315/448/1/012004.




DOI: https://doi.org/10.31284/j.jmesi.2024.v4i2.6659

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