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Nuevos avances en expansión electrónica.

New progress in electronic expansion valves.

• Author(s) : SANZ F., OTTEN M., SAAR J., et al.
• Publication date: 2015/07
• Languages : Spanish
• Keywords : Thermostatic expansion valve, Generality, Electronic expansion valve, Development
• Source: Frío Calor Aire acondicionado - vol. 43 - n. 482
• Formats : PDF

IIR document

Benefits investigation of electronic expansion valve in electric vehicle thermal system as compared to thermal expansion valve with shut-off valve.

• Author(s) : ZHANG R., STANKE E. J., ZHANG G., et al.
• Publication date: 2019/04
• Languages : English
• Keywords : Thermostatic expansion valve, Electronic expansion valve, Electric vehicle, Battery, Simulation, Expérimentation, Evaporator, Energy saving, Mobile air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 100
• Formats : PDF

Comparación del rendimiento térmico de una bomba de calor de expansión directa asistida por energía solar utilizando una válvula de expansión termostática y una válvula de expansión electrónica.

Comparison of the thermal performance of a solar-assisted direct expansion heat pump using a thermostatic expansion valve and an electronic expansion valve. 

• Author(s) : QUITIAQUEZ W., SIMBANA I., ISAZA ROLDAN C. A., NIETO-LONDOÑO C., QUITIAQUEZ P., TOPANTA RAMOS F.
• Publication date: 2020/11/11
• Languages : Spanish
• Keywords : Heat pump, Thermostatic expansion valve, R600a, Isobutane, Compression system, Testing, COP, Expérimentation, Electronic expansion valve
• Source: X Congreso Ibérico y VIII Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2020.
• Formats : PDF

IIR document

An experimental comparison between performances of modular silicon expansion valve and thermal expansion valve in mobile ac system.

• Author(s) : ZHANG Z., ZHU J., LI W., et al.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Car, Superheat, Silicon, Performance, Expérimentation, Evaporator, Expansion valve, Air conditioning, Thermal expansion
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Modelling thermostatic expansion valves.

• Author(s) : EAMES I. W., MILAZZO A., MAIDMENT G. G.
• Publication date: 2014/02
• Languages : English
• Keywords : Thermostatic expansion valve, Software, Refrigerating system, Commercial application, Mechanical vapour compression, Simulation, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 38
• Formats : PDF

A white-box modelling methodology for electronic expansion valve by considering choked flow.

• Author(s) : JIN Z., PARK N., LEE B. H., HWANG Y., CHIN S. W., OH S.
• Publication date: 2022
• Languages : English
• Keywords : Modelling, Expansion valve, Machine learning, Geometry, Thermodynamic property, Flow, Electronic expansion valve
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Application of electronic expansion valves in domestic refrigerators.

• Author(s) : KNABBEN F. T., RONZONI A. F., HERMES C. J. L.
• Publication date: 2020/11
• Languages : English
• Keywords : Household refrigerator, Energy consumption, Capillary tube, Electronic expansion valve, Simulation, Model, Compressor
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 119
• Formats : PDF

IIR document

Empirical correlation development of R245fa flow in electronic expansion valves.

• Author(s) : CHEN T., BAE J. K., KWON O. K.
• Publication date: 2018/04
• Languages : English
• Keywords : R245fa, Electronic expansion valve, Correlation, Heat pump, High temperature, Expérimentation, Flow
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 88
• Formats : PDF

IIR document

Evaluation of gray box thermostatic expansion valve mass flow models.

• Author(s) : BEHFAR A., YUILL D.
• Publication date: 2018/12
• Languages : English
• Keywords : Thermostatic expansion valve, Air conditioner, Modelling, Model, Mass, Flow, Flow rate
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 96
• Formats : PDF

IIR document

The influences of the operating characteristics of an Electronic Expansion Valve (EEV) on the operational stability of an EEV controlled direct expansion air conditioning system.

• Author(s) : XIA Y., DENG S.
• Publication date: 2016/09
• Languages : English
• Keywords : Electronic expansion valve, Direct expansion, Stability, Parameter, Expérimentation, Air conditioning
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 69
• Formats : PDF

Refrigerant flow through electronic expansion valve: experiment and neural network modeling.

• Author(s) : CAO X., LI Z. Y., SHAO L. L., et al.
• Publication date: 2016/01/05
• Languages : English
• Keywords : Electronic expansion valve, Artificial neural network, Modelling, Expérimentation, Flow, Refrigerant
• Source: Applied Thermal Engineering - vol. 92

IIR document

Dynamic linear modeling of a refrigeration process with electronic expansion valve actuator.

• Author(s) : SIQUEIRA DANTAS T. S. S., FRANCO I. C., FILETI A. M. F., et al.
• Publication date: 2017/03
• Languages : English
• Keywords : Electronic expansion valve, Comparison, Control (automatic), R404A, Superheat, Modelling
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 75
• Formats : PDF

IIR document

Experimental investigation on two-phase flow noise characteristics of R410A through electronic expansion valve of multi-split air conditioner.

• Author(s) : ZHOU S., ZHANG F., DING G.
• Publication date: 2023/02
• Languages : English
• Keywords : Expérimentation, Two-phase flow, Split system, Expansion valve, Noise, Test rig, Electronic expansion valve
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 146
• Formats : PDF

Analysis for the ejector used as expansion valve in vapor compression refrigeration cycle.

• Author(s) : WANG F., LI D. Y., ZHOU Y.
• Publication date: 2016/03/05
• Languages : English
• Keywords : Design, Compression system, Performance, Pressure, Ejector, Expansion valve, Condensation
• Source: Applied Thermal Engineering - vol. 96

Optimisation of expansion valve control in small refrigeration appliances under cyclic operation.

• Author(s) : BEEK M. van, JONG H. D.
• Publication date: 2016/07/11
• Languages : English
• Keywords : Commercial application, Control (automatic), Cooling capacity, Optimization, Energy efficiency, Expansion valve
• Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

China: expanding electronic expansion valve market

Electronic expansion valves are mainly used in inverter air conditioners to automatically adjust refrigerant flow to achieve better energy-saving performance. This technology is one of the 30 key energy-saving technologies promoted by the Chinese...

• Publication date : 2011/06/08

World's smallest electronic expansion valve

Danfoss recently presented a small electronic expansion valve, especially used for air conditioners with variable refrigerant flow.

• Publication date : 2020/07/01

Briefs: First MAC system using an ejector

Denso Corporation has developed the world's first passenger mobile air-conditioning system that uses ejector technology. The ejector, which is a small refrigerant injector, was installed on the new Prius introduced by Toyota in May 2009. According...

• Publication date : 2009/08/13

2005 AHR Expo Innovation award winners

The winners of the third annual AHR (Air Conditioning, Heating and Refrigeration) Expo Innovation awards will be honoured during a ceremony during the 2005 AHR Expo in Orlando, Florida, on February 8, 2005. The product entries were judged for...

• Publication date : 2004/12/22

CO2 supermarkets: Tesco

Designed as Tesco's first zero-carbon store, the new store at Ramsey, Cambridgeshire, UK, is completely HFC-free. The supermarket is hence using natural refrigerants CO2 and hydrocarbons throughout its refrigerators, freezers, heating, ventilation...

• Publication date : 2010/05/27

Magnetic-bearing centrifugal compressors

This new compressor technology - presented at the 2003 AHR Expo in Chicago - may have a significant effect on the future of mid-range chillers and rooftop applications in water-cooled, evaporatively cooled and air-cooled chilled-water and...

• Publication date : 2004/07/27

LNG Overview

LNG tankers China will produce 5 more LNG tankers. The first Chinese-built LNG tanker was built last year and the second one was launched in Shanghai in June 2006: it cost 160 million USD and can carry 147 000 m3 of LNG at -163°C during...

• Publication date : 2006/11/15

Transcritical CO2 system with ejector saves energy

Since July 2013, the first installed and operating transcritical CO2 system with ejector has registered 15% energy savings by reducing internal losses.

• Publication date : 2014/08/28

New low GWP replacement for R404A in hermetically-sealed systems

A new lower GWP replacement for R404A, which blends an HFO and an HFC with a “natural” refrigerant is to be made commercially available next year.

• Publication date : 2015/12/06

Honeywell tests new R404A replacement

Honeywell has been testing a new low-GWP refrigerant as a potential replacement for R404A in hermetically-sealed refrigeration systems

• Publication date : 2014/09/24

Faults and energy consumption of CO2 refrigeration systems in supermarkets

Food products refrigeration accounts for the largest share of energy consumption in supermarkets. In a recent study, the most common faults in supermarket CO2 refrigeration systems were investigated,...

• Publication date : 2021/06/29
• Subjects: Figures, economy, Technology

Heat pump systems for HVAC in electric vehicles

Heat pump systems offer an energy efficient option for HVAC in electric vehicles. Recent studies present innovative technologies to further improve the heating and cooling performance of heat pump systems as...

• Publication date : 2021/01/27
• Subjects: HFCs alternatives

Reduce refrigerant leaks in supermarkets

Refrigerant leaks are a recurring problem, particularly in the commercial refrigeration sector. An American initiative aims to identify the main causes of leaks and to propose solutions to reduce...

• Publication date : 2021/12/15

Two-phase ejectors: a high potential for energy savings

Two review papers recently published in the IJR highlight ejectors as a promising solution to dramatically improve the efficiency of vapour compression refrigeration systems and outline the challenges that...

• Publication date : 2020/11/27

Ionic liquids in combination with CO2: promising technology?

A group of scientists at the University of Notre Dame, Indiana, USA, are now working on utilizing novel ionic liquids – pure salts that are liquid at ambient temperatures – in tandem with CO2.

• Publication date : 2013/12/03

Member news : Danfoss launches thermostatic expansion valve for CO2

Danfoss has recently launched a thermostatic expansion valve for CO2, based on its TE2 valve. It is suitable for small to medium size remote refrigeration systems such as cold rooms and display...

• Publication date : 2022/10/27

Member news: Latest news from Danfoss

Danfoss is improving its range of electric expansion valves and has started construction of an energy-efficient supermarket. 

• Publication date : 2022/04/29

Liquefied Natural Gas: production process and cold energy recovery

Liquefied natural gas (LNG) is natural gas that has been cooled to about -160 °C and turned into a liquid to facilitate transportation and storage. A typical LNG supply chain...

• Last update : 2023/06/23
• Langues : French, English
• Themes : LNG and LPG

Additive manufacturing of regenerators for caloric cooling

In many areas of engineering, additive manufacturing allows the production of complex and multifunctional products that could not be manufactured using traditional methods. In the...

• Last update : 2022/09/16
• Langues : French, English
• Themes : Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling)

Cryogenic nitrogen in the food and beverage industry

The adoption of cryogenic processes in the food and beverage industry is predominantly driven by liquid nitrogen (LIN), and it is the preferred candidate for food chilling and...

• Last update : 2023/11/07
• Langues : French, English
• Themes : Freezing of foodstuffs