Author
Annamalai Mani
Other affiliations: Indian Institutes of Technology, Presidency University, Kolkata
Bio: Annamalai Mani is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Injector & Heat transfer. The author has an hindex of 19, co-authored 62 publications receiving 1096 citations. Previous affiliations of Annamalai Mani include Indian Institutes of Technology & Presidency University, Kolkata.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, an analysis of the thermodynamic cycle for a two-stage intermittent solar refrigerator is performed for R22DMF, R22-NMP, and R 22-DMETEG.
4 citations
TL;DR: In this paper, the authors proposed a forced convective evaporation system for tannery effluent (soak liquor), which facilitates direct contact heat and mass transfer between liquor and air.
3 citations
3 citations
TL;DR: In this paper, a feature preserving image-based method was used to estimate the effective thermal conductivity of copper metal foam having hollow ligaments, and the results were compared with analytical and empirical models available in the literature.
3 citations
11 Jul 2016
TL;DR: In this article, numerical and experimental studies of air ejector to analyse the influence of swirl on the performance of the system were carried out for the ejector with and with no-swirl and the same has been verified with experimental studies using particle image velocimetry (PIV).
Abstract: Among the various heat powered refrigeration systems, vapour jet refrigeration system (VJRS) is attractive because of its simple and rugged nature. Ejector is a key component in VJRS and the performance of the whole system depends on the effective performance of the ejector, which in-turn could be improved by proper mixing of primary and secondary streams. This paper focuses on numerical and experimental studies of air ejector to analyse the influence of swirl on the performance of the system. Three-dimensional numerical analysis has been carried out for the ejector with and with no-swirl and the same has been verified with experimental studies using flow visualisation technique, particle image velocimetry (PIV). Swirl is generated in the primary stream by incorporating fixed vane swirler of camber angle of 10°, just upstream of the convergent portion of the primary nozzle which is a convergentdivergent (CD) nozzle. Velocity vectors obtained from PIV and CFD were compared and found that the results fall within an acceptable range. Studies have been carried out for an ejector under various primary stream pressures, with secondary and discharge pressure being open to atmosphere. By incorporating swirler of Type-2, in the primary nozzle, it has been observed that, swirl induced is low to have a significant improvement in entrainment ratio (around 2%) of ejector whereas swirler of Type-1 resulted in 5% improvement in performance compared to ejector with no-swirl.
2 citations
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TL;DR: In this article, the authors discuss the importance of water resources in modern societies and the challenges facing modern societies, while water covers about two thirds of the surface of the earth, while air covers less than one third of it.
397 citations
TL;DR: In this article, to augment evaporation of the still basin water, fins were integrated at the basin of the solar still to accelerate the production rate, and for further increase in exposure area sponges were used.
385 citations
TL;DR: In this paper, a comprehensive literature review on ejector refrigeration systems and working fluids is presented, which deeply analyzes ejector technology and behavior, refrigerant properties and their influence over ejector performance.
Abstract: The increasing need for thermal comfort has led to a rapid increase in the use of cooling systems and, consequently, electricity demand for air-conditioning systems in buildings. Heat-driven ejector refrigeration systems appear to be a promising alternative to the traditional compressor-based refrigeration technologies for energy consumption reduction. This paper presents a comprehensive literature review on ejector refrigeration systems and working fluids. It deeply analyzes ejector technology and behavior, refrigerant properties and their influence over ejector performance and all of the ejector refrigeration technologies, with a focus on past, present and future trends. The review is structured in four parts. In the first part, ejector technology is described. In the second part, a detailed description of the refrigerant properties and their influence over ejector performance is presented. In the third part, a review focused on the main jet refrigeration cycles is proposed, and the ejector refrigeration systems are reported and categorized. Finally, an overview over all ejector technologies, the relationship among the working fluids and the ejector performance, with a focus on past, present and future trends, is presented.
359 citations
TL;DR: A literature review on ejectors and their applications in refrigeration can be found in this article, where a number of studies are grouped and discussed in several topics, i.e. background and theory of ejector and jet refrigeration cycle, performance characteristics, working fluid and improvement of jet refrigerator.
Abstract: This paper provides a literature review on ejectors and their applications in refrigeration. A number of studies are grouped and discussed in several topics, i.e. background and theory of ejector and jet refrigeration cycle, performance characteristics, working fluid and improvement of jet refrigerator. Moreover, other applications of an ejector in other types of refrigeration system are also described.
339 citations
TL;DR: In this article, a new combined power and refrigeration cycle is proposed, which combines the Rankine cycle and the ejector refrigeration cycles, and an exergy analysis is performed to guide the thermodynamic improvement for this cycle.
244 citations