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IIR document

Energy consumption of cold climate heat pumps in different climates. Comparison of single-stage and two-stage systems.

• Author(s) : GSCHWEND A., MENZI T., CASKEY S., et al.
• Publication date: 2016/02
• Languages : English
• Keywords : Energy consumption, Comparison, Two-stage system, Simulation, Heat pump, Single-stage system, USA, Cold climate
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 62
• Formats : PDF

Single Stage, Compound, Cascade and Booster Systems and Interstage Cooling Methods.

• Author(s) : PARANJPEY R.
• Publication date: 2018/03
• Languages : English
• Keywords : Generality, Comparison, Cooling, Thermodynamic property, Two-stage system, Performance, Single-stage system, Cascade system, Compressor
• Source: Air Conditioning and Refrigeration Journal, Cold Chain - vol. 9 - n. 1
• Formats : PDF

IIR document

A single stage absorption refrigeration system dynamic mathematical modeling, adjustment and experimental validation.

• Author(s) : MARTINHO L. C. S., VARGAS J. V. C., BALMANT W., et al.
• Publication date: 2016/08
• Languages : English
• Keywords : Geometry, Absorption system, Single-stage system, Modelling, Expérimentation
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 68
• Formats : PDF

IIR document

Thermodynamic modeling and optimization of refrigerant mixture for single stage very low temperature system using PC-SAFT equation of state.

• Author(s) : JEROME S., VENKATARATHNAM G.
• Publication date: 2015/08/16
• Languages : English
• Keywords : Thermodynamic property, Optimization, Single-stage system, Modelling, Mixture, Refrigerant
• Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
• Formats : PDF

IIR document

Comparative study on energy-saving performance of single- and two-stage evaporative-cooling condenser systems.

• Author(s) : YANG Y., ZENG J., YANG B., YIN L., HE T.
• Publication date: 2024/04
• Languages : English
• Keywords : Evaporative condenser, Evaporative system, Two-stage system, Single-stage system, Energy consumption, Energy saving, Modelling, Hot climate, Humid climate, Performance, COP, Seasonal performance, Relative humidity, Air conditioning, Ambient condition
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 160
• Formats : PDF

Recommended by the IIR / IIR document

Review of small-capacity single-stage continuous absorption systems operating on binary working fluids for cooling: Compact exchanger technologies.

• Author(s) : ALTAMIRANO A., STUTZ B., LE PIERRÈS N.
• Publication date: 2020/06
• Languages : English
• Keywords : Chiller, Absorption, Exchanger, Heat exchanger, Absorber, Single-stage system, Compact heat exchangeur, Review
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 114
• Formats : PDF

IIR document

Review of small-capacity single-stage continuous absorption systems operating on binary working fluids for cooling: Theoretical, experimental and commercial cycles.

• Author(s) : ALTAMIRANO A., LE PIERRÈS N., STUTZ B.
• Publication date: 2019/10
• Languages : English
• Keywords : Ionic liquid, Ammonia-water, Absorption system, Prototype, Review, Single-stage system, Binary mixture, Water-lithium bromide
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 106
• Formats : PDF

Centrifugal chiller: single-stage or two-stage?

• Publication date: 2014/01
• Languages : English
• Keywords : Generality, Comparison, Chiller, Two-stage system, Performance, Single-stage system, Centrifugal compressor
• Source: Air Conditioning and Refrigeration Journal - vol. 17 - n. 1

Influence of the high-outdoor temperature on an air conditioner operation: second-law analysis for low-GWP refrigerant fluids.

• Author(s) : GROUS FRANCO L. H., HENRIQUES I. B., RIBEIRO G. B.
• Publication date: 2022
• Languages : English
• Keywords : Air conditioning, Thermodynamic cycle, Compression system, Low GWP, Two-stage system, Single-stage system, Simulation, High temperature
• Source: 2022 Purdue Conferences. 19^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Recent advances in single- and multi-stage Stirling-type pulse tube cryocoolers in SKLIP/SITP/CAS.

• Author(s) : DANG H., TAN J., ZHA R., et al.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Pulse tube, Review, Stirling, Multistage system, Single-stage system, Cryocooler
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

IIR document

Cooling-rankine absorption cycles. 1: single-stage case.

• Author(s) : STAICOVICI M. D.
• Publication date: 2015/04/16
• Languages : English
• Keywords : Rankine, Operation, Cooling, Absorption, Performance, Single-stage system, Model
• Source: 6^th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, April 16-18, 2015.
• Formats : PDF

Comparative analysis of the main parameters and reliability indicators of single-stage thermoelectric cooling devices while using different combinations of initial materials settings of a similar efficiency.

[In Ukrainian. / En ukrainien.]

• Author(s) : ZAYKOV V. P., MESCHERYAKOV V. I., ZHURAVLEV Y. I.
• Publication date: 2015/03/26
• Languages : Ukrainian
• Keywords : Thermoelectric cooling, Temperature, Efficiency, Parameter, Single-stage system, Reliability
• Source: Holodil'na Tehnika i Tehnologiâ - vol.51 - n.4

Multivariable analysis and H8 control of a one-stage refrigeration cycle.

• Author(s) : BEJARANO G., ALFAYA J. A., ORTEGA M. G., et al.
• Publication date: 2015/12/05
• Languages : English
• Keywords : Refrigerating system, Vapour, Control (automatic), Compression system, Simulation, Single-stage system
• Source: Applied Thermal Engineering - vol. 91

IIR document

Control strategy of two stage CO2 heat recovery systems in ice rinks.

• Author(s) : THANASOULAS S., ROGSTAM J.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Temperature, Heat recovery, R744, Two-stage system, Skating rink, Optimization, Single-stage system, Modelling, Desuperheater, COP, CO2
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

IIR document

The evaluation of working pairs for single-absorption cycle based on excess Gibbs free energy.

• Author(s) : FANG Y., HUANG J., ZHOU Y., et al.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Thermodynamics, R161, R134a, Absorption, R32, R152a, Single-stage system, Modelling, Refrigerant
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Great potential for solar district cooling in Saudi Arabia

A recent modelling compares the performances of a two-stage and a single-stage absorption chiller in a solar district cooling system in Riyadh, Saudi Arabia.

• Publication date : 2018/12/27
• Subjects: Developing country

High efficiency, low carbon supermarket refrigeration

This paper was presented at the IIR Gustav Lorentzen Conference in Glasgow (Sep. 2004). A new but simple high efficiency refrigeration system design suitable for use in supermarkets has been developed based on standard components so that...

• Publication date : 2004/11/24

New solar-cooling technology for cooling-freezing

Refrigeration is often based on compressor technology which consumes electricity. A recently developed system making it possible to achieve relatively low temperatures solely using solar energy has been designed by PROMES, a laboratory working...

• Publication date : 2007/05/04

EU F-gas Consultation Forum: alternatives to fluorinated gases exist for single-split air conditioners

A document published by this forum underlines that it now seems possible to avoid the use of fluorinated gases in new small single split air conditioners by replacing them with propane, unless prohibition...

• Publication date : 2021/01/26
• Subjects: HFCs alternatives

An ejector refrigeration system optimised for sub-zero temperatures on fishing vessels

Large amounts of diesel fuel are used to power fishing vessels engines and on-board refrigeration systems. In a recent theoretical study, an energy-efficient sub-zero refrigeration system proposed based on a...

• Publication date : 2021/05/31
• Subjects: Technology

CO2 system for retrofitting in food processing company

CO2 was chosen over an ammonia cascade plant

• Publication date : 2012/08/23

Assessment of the environmental impact of domestic refrigerators using LCCP

The environmental impact of domestic refrigerators over their lifetime has been quantified in different configurations (operating cycles, materials, insulation) in a recent IJR article. 

• Publication date : 2021/02/23

Not-in-kind cooling technologies performance comparison

This study proposes a quantitative comparison of refrigerants and system performance of not-in-kind cooling technologies.

• Publication date : 2016/08/16

IIR GL2020 conference: Range of CO2 applications

Almost half of the presentations at the IIR Gustav Lorentzen conference in Kyoto focused on CO2, in commercial refrigeration systems but also in many other applications. Overview of these...

• Publication date : 2021/01/26
• Subjects: HFCs alternatives

ICR2011 highlights: cooling particle detectors

Cooling systems for particle detectors attracted interest at the IIR’s Congress in Prague in August 2011. These highly specific applications have very strict requirements compared with standard cooling systems: refrigerants should be resistant to...

• Publication date : 2012/02/21

Compressors2013 highlights: technical advancements related to refrigeration compressors

During the successful IIR International Conference on Compressors and Coolants held in Casta Papiernicka in June 2013, several papers were dedicated to technological advancements related to refrigeration compressors.

• Publication date : 2014/01/03

The race to design individual cooling devices

Cooling individuals would be less energy-consuming and a lot cheaper than cooling entire buildings. Based on that principle, companies, start-ups, and researchers are racing to build wearable devices that can act like mini air-conditioning...

• Publication date : 2020/02/06

News from IIR members: Nestlé

Nestlé's confectionery production facility in Halifax, UK, has implemented an award-winning innovative ammonia heat pump plant to power its operations, cutting costs at the site by over 240 000 € per year. The system, formed by a collaborative...

• Publication date : 2011/02/07

IIR member news: Johnson Controls YORK chiller optimised for R1233zd(E)

The YORK YZ magnetic bearing centrifugal chiller, produced by Johnson Controls, is said to be the first chiller fully optimized for ultimate performance with the low-global warming potential refrigerant R1233zd(E).

• Publication date : 2019/01/31

Nanorefrigerants

Nanorefrigerants are created by adding nanoparticles in suspension to a base refrigerant. They have a thermal conductivity that is 15% to 104% higher than that of the corresponding...

• Last update : 2022/06/17
• Langues : English, French
• Themes : Nanofluids

Cryogenics in the pharmaceutical industry: drug design and bioavailability improvement

Research activities in the pharmaceutical sector focus primarily on developing novel drug formulations which can elicit the desired response upon being administered to the patient...

• Last update : 2023/03/10
• Langues : French, English
• Themes : Freeze-drying in biology and medicine, Cryobiology, cryomedicine: general information

Additive manufacturing of heat exchangers

In the refrigeration industry, additive manufacturing (colloquially referred to as “3D printing”) makes it possible to fabricate novel, complex and potentially more energy efficient...

• Last update : 2022/09/07
• Langues : French, English
• Themes : Evaporators, condensers and other heat exchangers