What is the influence of superheating refrigerant befor compressor on global performances of system?
Best insight from top research papers
Superheating the refrigerant before the compressor in a refrigeration system can significantly impact the system's overall performance. Research indicates that superheating can lead to increased system efficiency and cooling capacity. By introducing useful superheating in the evaporator, extra refrigerating effect can be achieved, enhancing the system's performance . Additionally, superheating the refrigerant can improve the stability, endurance, and coefficient of performance (COP) of the system . Furthermore, studies have shown that superheated refrigerant can enhance the performance of ejector-based refrigeration systems, leading to improved entrainment ratios and overall system efficiency . Therefore, incorporating superheating of the refrigerant before the compressor can have a positive influence on the global performances of the refrigeration system, enhancing efficiency and cooling capacity.
Answers from top 5 papers
More filters
| Papers (5) | Insight |
|---|---|
15 Jun 2015 | Superheating the refrigerant before the compressor can significantly enhance system performance by increasing the entrainment ratio and reducing phase transition inside the ejectors, leading to improved efficiency. |
10 Mar 2014 | Superheating control before the compressor impacts COP, stability, and compressor endurance in vapor compression cycles. Dynamic inverse models can enhance control efficiency and system performance. |
01 Nov 2016 2 Citations | Superheating refrigerant before the compressor in a vapor compression refrigeration system can enhance system performance by reducing compressor power consumption and expansion valve losses, improving overall efficiency and economic parameters. |
Open access 01 Jan 2014 | Superheating refrigerant before the compressor improves the performance of the vapour compression refrigeration system by increasing the Coefficient of Performance (COP) from 4.17 to 4.5. |
| Increasing evaporator superheating and pressure in an ORC with R134a affects cycle characteristics like power production, efficiency, and irreversibility, showcasing significant impacts on system performance. |
Related Questions
What is superheating?5 answersSuperheating refers to a state where a substance is heated above its boiling point without undergoing a phase change. This phenomenon can have practical applications, such as in the use of superheated steam (SHS) in food processing to enhance quality and safety. Additionally, superheating can be utilized in medical procedures, as seen in a catheter system designed to induce fractures in vascular lesions using superheated fluid to generate pressure waves. Moreover, superheating has been explored in the field of mass spectrometry, where microfluidic superheating is used for peptide fragmentation prior to analysis, allowing for stable conditions up to 240°C without boiling the sample. Overall, superheating presents opportunities for various industries by offering unique benefits and applications.
How to analyze the Global market demand for superheated steam dryers?4 answersAnalyzing the global market demand for superheated steam dryers involves considering various factors. The use of superheated steam as a drying medium offers advantages such as energy efficiency, environmental friendliness, and safety compared to traditional methods like hot air. However, challenges exist in the widespread adoption of this technology, including high equipment costs and low industrialization levels in certain regions like China. Innovative systems have been developed to address these challenges, such as closed-loop superheated-steam drying systems that enhance energy efficiency and product quality while being environmentally friendly and safe. Understanding these technological advancements and market dynamics is crucial for assessing the global demand for superheated steam dryers and promoting their sustainable integration into various industries.
What are the cons of superheating refrigerant before the compressor?5 answersSuperheating refrigerant before the compressor in a refrigeration system can have several drawbacks. Firstly, it can lead to increased energy losses and higher compression work, affecting the overall efficiency of the system. Additionally, excessive superheating can reduce the efficiencies of reciprocating compressors used in household refrigeration, impacting their performance and potentially affecting the reliability of components like the electrical motor. Moreover, in high-temperature vapor compression heat pumps, superheating may be necessary to prevent condensation during compression, which can lead to compressor damage and lubrication issues, requiring careful consideration of refrigerant and cycle configurations. Therefore, while superheating can have benefits in certain applications, it is essential to balance it with these potential drawbacks to optimize system performance and reliability.
What are the most important factors affecting the efficiency of a hydrogen compressor?5 answersThe efficiency of a hydrogen compressor is affected by several factors. One important factor is the local dehydration of the polymer electrolyte membrane (PEM), which can lead to an increase in the membrane resistance and a decrease in overall efficiency. The humidity of the feed gas also plays a role, as it affects the water transport across the membrane and can result in heterogeneities in the distribution of electric resistances. Other factors that impact efficiency include the temperature, membrane thickness, discharge pressure, and stoichiometric ratio. Additionally, the pressure gradient and temperature can affect hydrogen permeation across the membrane, with higher temperatures leading to higher permeation rates. It is also important to consider the overpotentials that affect the electrochemical compression process, such as diffusion voltage, membrane voltage, activation overpotential, and contact overpotential.
How refrigerant selection affect energy efficiency of chiller?4 answersRefrigerant selection has a significant impact on the energy efficiency of a chiller. Contaminants in the refrigerant can cause efficiency loss, leading to energy wastage and equipment damage. The removal of hot-wall condenser, condenser air cooling increment, and decreasing compressor cooling capacity can reduce energy consumption and refrigerant charge amount. The thermodynamic properties of a refrigerant limit the efficiency that can be attained in a heat pump or refrigeration machine, affecting the amount of power required for a specific thermal load. Factors such as relative compressor efficiencies, heat transfer effectiveness, and pressure drop impacts also play a role in the overall system efficiency. Additionally, the concentration ratio of zeotropic mixture refrigerants and the design temperature of chilled water can affect the energy performance of a chiller.
How does the use of nanorefrigerants affect the coefficient of performance (COP) of a refrigerator?4 answersThe use of nanorefrigerants in a refrigerator has been found to improve the coefficient of performance (COP) of the system. Studies have shown that the usage of nanorefrigerants in vapor compression refrigeration systems can increase the COP by up to 43.93% in theoretical studies and up to 56.32% in experimental studies. The performance of a domestic refrigerator can be enhanced by using nanofluids made from agricultural sources, such as rice husk, as a combination with the refrigerant. In one study, the use of rice husk-based nanofluid resulted in an increase in COP by 31%, 23%, and 35% for different concentrations of nanofluid. Another study investigated the performance of nanorefrigerants (R134a-ZrO2) in a domestic refrigerator and found that the COP increased when the system was operated with the nanorefrigerant. Additionally, the efficiency of a domestic refrigerator can be improved by using R600a with graphene nanolubricant, which resulted in a higher COP and reduced power consumption.