Exergy and performance analyses of impact subcooling for vapor compression refrigeration system utilizing eco-friendly refrigerants

Tarish, Ali Lateef; Douri, J Al; Apostol, Valentin; Pop, Horațiu; Ioniţă, Claudia

doi:10.1088/1757-899x/997/1/012158

Cited by 6 publications

(1 citation statement)

References 15 publications

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“…In Iraqi cities, split unit air conditioners (SUAC) are commonly used in both residential and commercial buildings. The SUAC working with conventional vapor compression refrigeration cycle [1]. The air conditioning appliance accounts for 70% of the energy consumed in the building.…”

Section: Introductionmentioning

confidence: 99%

Autonomous Control of Multi-Speed Split Unit Air Conditioning for Space Load Response

Jwad¹,

Tarish²

2022

Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9

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Succeeding comfort conditions in hot climates region with minimum power consumption is the important requisite in designing the air conditioning system such as split unit air conditioning (SUAC). Under Iraqi conditions, the current study compared the energy consumption of SUAC in two classrooms at Southern Technical University/Engineering Technical College-Basra (STU/TCB). Additionally, this paper developed an autonomous cooperative controller for sensing changes in dynamic space load and auto response of a variable speed compressor over a 12-hour period. The first classroom has a single-speed SUAC compressor, while the second classroom has a variable-speed SUAC compressor with a total capacity of 6 Ton. The results show that in June, the largest amount of energy saved was 51.5 % at 7 AM, while the least amount of energy saved was 10.9 % at 14 PM. SUAC with autonomous controller was discovered to be the highest control unit with less energy utilized than other SUACs, achieving a value of 24.8 % energy savings. The split unit control (SUC) could result in a significant reduction in SUAC compressor power in class 2 at seasonal energy efficiency rating (SEER) levels 8 or 20, resulting in a 75% reduction in operating costs throughout the year.

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Section: Introductionmentioning

confidence: 99%

Autonomous Control of Multi-Speed Split Unit Air Conditioning for Space Load Response

Jwad¹,

Tarish²

2022

Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9

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Practical study on heat pump enhancement by the solar energy

et al. 2021

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The heat pumps system is one of the most remarkable system that is widely used around the world, their capacity is different according to necessity. The energy consumption in those systems will limit their effectiveness. This study will try to prove the positive reactance of the new changes (the additional heat exchanger) on the heat pump work, where the power consumption will reduce about (13-17%). The study includes the experimental results of the laboratory model, which has been manufactured in the laboratories of the technical college of Mosul/Northern technical university-Iraq. The model consists of the heat pump that was improved by using the additional heat exchanger, its duty is to heat the refrigerant before entering the compressor, by using solar energy. The results of this work prove the positive effect of the additional heat exchanger, on the coefficient of performance of the heat pump, in both modes of heating and cooling. The conclusions are useful to the industries that deal with heat pumps.

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