STUDY THE EFFECT CHANGE IN DS OF A DX-EVAPORATOR AIR CONDITIONING SYSTEM USING MANUAL CONTROL
Keywords:
DX, VSRS, EEV, DSAbstract
Air conditioning systems consume high rates of energy, with the compressor consuming the largest portion of this energy. In this study, the performance of a variable-speed air conditioning system with a capacity of one ton was tested, which contains a compressor, a variable-speed supply fan, an electronic expansion valve, and a DX evaporator with R-410A refrigerant. The results showed that increasing DS does not affect the performance coefficient at a fixed compressor speed. Moreover, when the compressor speed increases, the performance factor decreases from 4.2 to 3.5 due to increased energy consumption.
References
T. G. S. Lago, L. F. M. Moura, K. Ismail, and C. Rosa do Espirito Santo Nobrega, “Experimental Investigation on Variable Speed Compressor With and Electronic Expansion Valve in a Refrigeration System,” no. November, 2018, doi: 10.26678/abcm.encit2016.cit2016-0230.
J. Sarkar and S. Bhattacharyya, “Application of graphene and graphene-based materials in clean energy-related devices Minghui,” Arch. Thermodyn., vol. 33, no. 4, pp. 23–40, 2012, doi: 10.1002/er.
G. Sonnenrein, A. Elsner, E. Baumhögger, A. Morbach, K. Fieback, and J. Vrabec, “Reducing the power consumption of household refrigerators through the integration of latent heat storage elements in wire-and-tube condensers,” Int. J. Refrig., vol. 51, no. October 2017, pp. 154–160, 2015, doi: 10.1016/j.ijrefrig.2014.12.011.
X. Xu, S. Deng, and M. Chan, “A new control algorithm for direct expansion air conditioning systems for improved indoor humidity control and energy efficiency,” Energy Convers. Manag., vol. 49, no. 4, pp. 578–586, 2008, doi: 10.1016/j.enconman.2007.07.040.
Z. Li, X. Xu, S. Deng, and D. Pan, “A novel proportional-derivative (PD) law based fuzzy logic principles assisted controller for simultaneously controlling indoor temperature and humidity using a direct expansion (DX) air conditioning (A/C) system,” Int. J. Refrig., vol. 57, no. June, pp. 239–256, 2015, doi: 10.1016/j.ijrefrig.2015.05.011.
H. Nasution, A. A. Aziz, and Z. A. Latiff, “PI control application for building air conditioning system,” J. Teknol., vol. 75, no. 11, pp. 61–69, 2015, doi: 10.11113/jt.v75.5333.
I. N. Ardita, I. G. A. B. Wirajati, and Sudirman, “The effect of changing superheat degrees on energy consumption in a split air conditioning,” J. Phys. Conf. Ser., vol. 1450, no. 1, 2020, doi: 10.1088/1742-6596/1450/1/012091.
Y. Xia, Q. Ding, Z. Jiang, S. Deng, and M. Song, “Development of a superheat controller for mitigating hunting in a direct expansion air conditioning system,” Energy Procedia, vol. 158, pp. 2085–2091, 2019, doi: 10.1016/j.egypro.2019.01.481.
Y. Xia et al., “Improving degree of superheat control in a direct expansion (DX) air conditioning (A/C) system,” Int. J. Refrig., vol. 158, no. 1, pp. 61–69, 2015, doi: 10.11113/jt.v75.5333.
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.