Experimental investigation of dynamic characteristics of a rotary compressor and its air conditioner using R290 during warm startup

Wu, Jiang; Lin, Jie; Zhang, Ze; Chen, Zhenhua; Xie, Jing; Lü, Jun

doi:10.1016/j.applthermaleng.2017.07.137

Cited by 28 publications

(4 citation statements)

References 13 publications

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“…Sıcak başlatmada asgari gövde ve emme borusu sıcaklıkları (22.9 C ve 8.2 C), soğuk çalıştırmanınkinden sırası ile %26, %76 daha yüksek olmaktadır. Sıcak başlatma sırasında gövdede daha az sıvı bulunduğundan maksimum basınç değeri (1,7 MPa) soğuk çalıştırma sürecinden (2,21 MPa) %23 daha düşük olarak elde edilmektedir [112].…”

Section: şEkil 8 Buhar Enjeksiyon Türleri (Steam Injection Types) [99]unclassified

Döngüsel Kompresörlerde Teknolojik Gelişmeler

2023

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Enerjinin verimli bir şekilde kullanılması, su ve gıda sorunlarından sonra çözümlenmesi gereken en önemli konulardan birisidir. 2020 yılında Türkiye'de yaklaşık 290 milyar kilowatt saat elektrik tüketimi gerçekleşmiştir. Endüstride elektrik tüketiminin yaklaşık olarak %10'u sıkıştırılmış havanın üretimi için kullanılmaktadır. Bu sebeple sıkıştırılmış hava eldesinde kullanılan kompresörlerin performansının arttırılması endüstri ve ülkemiz açısından büyük önem taşımaktadır. Bu çalışmada, son zamanlarda buzdolabı ve klimalarda yaygın olarak kullanılan döngüsel kompresörlerin verimini arttırmaya yönelik çalışmalar konu başlıkları altında derlenmiş ve incelenmiştir. Ayrıca döngüsel kompresörlerin avantaj, dezavantaj ve teknolojik olarak gelişimleri de değerlendirilmiş olup, literatüre katkı sağlanması amaçlanmıştır.

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Section: şEkil 8 Buhar Enjeksiyon Türleri (Steam Injection Types) [99]unclassified

Döngüsel Kompresörlerde Teknolojik Gelişmeler

2023

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“…These mathematical models included start-up dynamics [91], mechanical and internal leakage losses [92]. Apart from theoretical analyses, experimental investigations were also conducted for warm start-up operations with R290 [93,94].…”

Section: Transient Analysismentioning

confidence: 99%

“…Amongst the replacement refrigerants with low GWP, R290 was found to have the best performance [182] and in an investigation on two-phase compression in the event of liquid slugging [183], R290 also had the least detrimental effect on the compressor due to the large difference in its specific volume between the liquid and vapor phases. Extensive research on the performance of the rolling piston compressor with R290 was thus carried out, which included transient start-up investigations [93,94], and effects of component deformation [103] in lieu of the associated higher operating pressures.…”

Section: Refrigerantsmentioning

confidence: 99%

A Review on Sliding Vane and Rolling Piston Compressors

Ooi

2021

Machines

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Rotary compressors have been employed in heating and cooling for more than a century and are ubiquitous in daily life but there has not been any comprehensive record of their development and technological advances. This review paper attempts to provide a comprehensive account of the advances in R&D and design evolution of these rotary compressors since their inception, namely the sliding vane compressor, rolling piston compressor, and their design variants in open literature. This is to showcase the current state-of-the-art for these compressors so that researchers can use it as a basis for future work. Based on authors’ insight, inter-disciplinary research combined with advancements in ‘disruptive’ technology such as artificial intelligence and advancements in additive manufacturing might be a promising research direction to bring about improvements in rotary compressor performance to meet mankind’s growing needs for cooling and heating applications.

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“…Wu et al. 6 have studied the dynamic characteristics of an R290 rotary compressor and its air conditioner during warm startup under a cooling condition. This study identified that the viscosity and liquid level ranges in the compressor for the warm startup are smaller than that of the cold startup under the same cooling condition.…”

Section: Literature Reviewmentioning

confidence: 99%

Energy conservation in vapour compression refrigeration system using vapour injection technique

Rajamani

Periasamy²

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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In modern days, the vapour compression refrigeration system is followed in almost all air-conditioning applications. Due to the high ambient temperature during extreme summer conditions, the commercial vapour compression refrigeration system made with cost competitiveness are not in a position to meet the required indoor conditions (27°C Dry Bulb Temperature and 19°C Wet Bulb Temperature) within a stipulated time. Hence a study on the performance of vapour compression refrigeration system is needed without compromising the required indoor conditions. This paper concentrates on the use of an innovative technique called vapour injection in the rotary compressor. The rotary compressor based air-conditioning system is considered in this study as it is used widely across the world, particularly in domestic applications. This vapour injection technique meets the required indoor conditions with significantly increased cooling capacity and coefficient of performance (COP) by lowering the condensing temperature and increasing sub-cooling. A 1.5 TR vapour compression refrigeration system equipped with a rotary compressor is taken for study along with a refrigerant R22. Around 90% of heating, ventilation and air-conditioning systems in India use R22 refrigerant which is permitted to be used up to year 2030. A conventional vapour compression refrigeration system is redesigned towards injecting additional low temperature refrigerant vapour back into the compressor just before the suction port. At standard test conditions, 11.87% to 12% of higher cooling capacity is achieved with 1% to 2.5% of less power consumption which resulted in 13.3% to 15% of higher COP.

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Experimental investigation of dynamic characteristics of a rotary compressor and its air conditioner using R290 during warm startup

Cited by 28 publications

References 13 publications

Döngüsel Kompresörlerde Teknolojik Gelişmeler

Döngüsel Kompresörlerde Teknolojik Gelişmeler

A Review on Sliding Vane and Rolling Piston Compressors

Energy conservation in vapour compression refrigeration system using vapour injection technique

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