Search results

Experimental study on fouling in the heat exchangers of surface water heat pumps.

• Author(s) : BAI X., LUO T., CHENG K., et al.
• Publication date: 2014/09
• Languages : English
• Keywords : Surface water, Heat pump, Performance, Expérimentation, Fouling, Heat exchanger
• Source: Applied Thermal Engineering - vol. 70 - n. 1

Experimental study of the effects of fin surface characteristics on defrosting behavior.

• Author(s) : LIANG C., WANG F., LU Y., et al.
• Publication date: 2015/01
• Languages : English
• Keywords : Fin, Expérimentation, Surface state, Defrosting, Melting, Water
• Source: Applied Thermal Engineering - vol. 75

IIR document

Temperature-dependency on adhesion force of ice made from surfactant–pure water mixture to copper surface.

• Author(s) : MATSUMOTO K., MINAMIYA K., SAKAMOTO J., et al.
• Publication date: 2017/07
• Languages : English
• Keywords : Surfactant, Ice, Copper, Surface temperature, Adsorption, Adhesion, Expérimentation, Water
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 79
• Formats : PDF

IIR document

Experimental investigation on the supercooling effect of fluids confined in non-metallic vessels using pure water and silicon carbide.

• Author(s) : GUND S., KAUFFELD M.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Ice slurry, Supercooling, Surface, Silicon, Production, Material, Expérimentation, Testing, Crystallization, Water
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Recommended by the IIR

Review of humidity effects on humid air-water condensation by a cooling surface for atmospheric water harvesting.

• Author(s) : KIM G. S., CAO T., HWANG Y.
• Publication date: 2021/05
• Languages : English
• Source: 2021 Purdue Conferences. 18^th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

IIR document

Using Al2O3-water nanofluid to investigate the spray cooling heat transfer performance on a heated surface.

• Author(s) : CHANG T. B., LIN T. H., HUANG J. W., et al.
• Publication date: 2019/08/24
• Languages : English
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

Self healing, slippery surfaces for HVAC&R systems.

• Author(s) : YU R., JACOBI A. M.
• Publication date: 2014/07/14
• Languages : English
• Keywords : Refrigerating system, Frost, Condensate, Design, Aluminium, Surface, Droplet, Expérimentation, Heat exchanger, Water
• Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
• Formats : PDF

Characteristic research of ammonia vapor absorption into the surface of stagnant ammonia-water under big pressure difference.

[In Chinese. / En chinois.]

• Author(s) : DONG M., XIA Z., WANG R., et al.
• Publication date: 2014/04
• Languages : Chinese
• Source: Journal of Refrigeration - vol. 35 - n. 156
• Formats : PDF

IIR document

Pressure drop and void fraction of vertical and horizontal adiabatic two-phase flow in a plate heat exchanger single channel with uniform gas-liquid distribution.

• Author(s) : BUSCHER S.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Vertical flow, Velocity (fluids, gases), Two-phase flow, Corrugated surface, Channel, Air-water, Expérimentation, Heat exchanger, Pressure drop
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

IIR document

Flow patterns of vertical and horizontal adiabatic two-phase flow in a plate heat exchanger single channel with uniform gas-liquid distribution.

• Author(s) : BUSCHER S.
• Publication date: 2019/08/24
• Languages : English
• Keywords : Two-phase flow, Gas, Corrugated surface, Channel, Liquid, Air-water, Horizontal plate, Expérimentation, Heat exchanger, Distribution
• Source: Proceedings of the 25^th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
• Formats : PDF

IIR document

Evaluations of heat pump water heater with liquid-separation condensation from perspectives of performance enhancement and heat exchange area reduction.

• Author(s) : CHEN J., YANG N., LI J., HE J., CHEN Y., LUO X., LIANG Y.
• Publication date: 2024/05
• Languages : English
• Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 161
• Formats : PDF

Application analysis on open-loop surface water-source heat pump systems.

[In Chinese. / En chinois.]

• Author(s) : ZHANG Y., LI B.
• Publication date: 2007/09
• Languages : Chinese
• Keywords : Surface water, Gymnasium, China, Design, Heat pump, Case study, Water-water
• Source: HV & AC - vol. 37 - n. 202
• Formats : PDF

IIR document

Lakes as a heat source in cold climates.

• Author(s) : AITTOMÄKI A.
• Publication date: 2003/08/17
• Languages : English
• Keywords : Surface water, Temperature, Heat source, Heat pump, Modelling, Water, Cold climate
• Source: 21^st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
• Formats : PDF

Experimental analysis on cleaning methods of heat pump units in surface water heat pump systems.

[In Chinese. / En chinois.]

• Author(s) : CHEN Y., HAN C., WANG J., et al.
• Publication date: 2008/12
• Languages : Chinese
• Keywords : Surface water, Heat source, Process, Heat pump, Cleaning, Shell and tube exchanger, Water-water
• Source: HV & AC - vol. 38 - n. 219
• Formats : PDF

IIR document

COMPARISON BETWEEN SOIL, ROCK, GROUND WATER AND LAKES AS HEAT SOURCE FOR HEAT PUMPS. THEORY AND PRACTICE.

• Author(s) : JOHANSSON I.
• Publication date: 1983/08/07
• Languages : English
• Keywords : Surface water, Comparison, Rock, Heat source, Ground, Heat pump, Lake, Underground water
• Source: [Refrigeration serving humanity]. Proceedings of the XVI^th international Congress of Refrigeration.
• Formats : PDF

Efficient cooling methods to reduce heat stress in pigs

Microclimate parameters such as air temperature and humidity are important indicators of animal welfare. Besides, heat stress is more detrimental to productivity in the swine...

• Publication date : 2020/10/22
• Subjects: Technology

Pulse technology defrosts surfaces in seconds

A team of Japanese and American researchers is developing with a new, fast and efficient technology to defrost surfaces.

• Publication date : 2019/09/30

Reducing the economic costs of a direct-use geothermal heating system

Italian researchers have modelled a polymer heat exchanger to reduce the cost of a direct-use geothermal heating system for a single building in the active volcano district of the...

• Publication date : 2022/02/21
• Subjects: Technology

Frost detection and defrosting methods: latest advances

A recent Purdue conference paper presents the state of the art regarding methods for retarding the onset of frosting, frost detection techniques and defrosting strategies, including those based on artificial...

• Publication date : 2023/02/21

Solar heating and cooling: key trends and challenges

In 2020, the solar thermal energy yield amounted to 407 TWh, which correlates to savings of 43.8 million tons of oil and 141.3 million tons of CO2. Although still only a niche market, solar cooling...

• Publication date : 2021/09/07

Radiative cooling coatings that can adapt to the seasons

A novel material can be used as a coating on building’s rooftops or windows to provide radiative cooling in the summer without overcooling in the colder months. 

• Publication date : 2022/01/28
• Subjects: Technology

Evaporative cooling without adding humidity

Scientists at the University of Harvard have designed a prototype evaporative cooling system called Cold-SNAP that effectively cools air at low cost for both dry and humid climates.

• Publication date : 2020/05/26
• Subjects: Developing country, Technology

Frost mitigation methods for heat pumps and refrigeration systems

Frost growth is an important issue since defrosting can represent up to 30% of the total energy consumption of refrigerated display cabinets. Review of the various frost mitigation technologies and latest...

• Publication date : 2021/12/15
• Subjects: Technology

5th generation district heating and cooling networks in Europe

A recent generation of district heating and cooling networks is developing in Europe, using low temperature renewable energy heat sources (such as shallow...

• Publication date : 2022/02/28
• Subjects: Technology

Efficiency of ground source heat pump systems

Ground source heat pumps (GHSP) have been reported to be more efficient than more widespread air source heat pumps despite higher installation costs. A recent article has reviewed parameters impacting the energy...

• Publication date : 2021/03/29
• Subjects: Technology

The challenges of thermal management of next-generation electronic equipment

With the increasing integration and miniaturization of electronic devices, the heat flows they generate are constantly increasing. Spray cooling has many advantages in this regard. 

• Publication date : 2023/03/27

New Monaco Yacht Club House to be cooled thanks to ocean water

Monaco’s new yacht club sticks to the sea-water cooling tradition.

• Publication date : 2013/09/24

First liquefied hydrogen carrier launched in Japan

In line with its commitment to pave the way for the first "Hydrogen Society", Japan intends to use this carrier to transport hydrogen from Australia, where it is produced from lignite.

• Publication date : 2020/02/05

Evaporative cooling experimentations in urban areas

Various researches are currently being conducted to study the impact of evaporative cooling in urban areas.

• Publication date : 2019/10/30
• Subjects: Environment, General information

Evaporative cooling: continuation of the Cold-Snap project at Harvard University

Tests show that Cold-Snap evaporative cooling technology would be effective in humid climates, while limiting water consumption.

• Publication date : 2022/09/28

New IIR Informatory Note: Advancements in Supermarket Refrigeration

Download your copy of the latest IIR Informatory Note on “Advancements in Supermarket Refrigeration”

• Publication date : 2018/04/04

Technical visit to the Tokyo fish market

At the ICCC conference last June, attendees had the opportunity to participate in technical visits, including a tour of the Tokyo fish market. Alain Le Bail, President of IIR Commission C2, joined the visit and...

• Publication date : 2024/11/15

SophiA project: HKA Lab test progress

SophiA HKA (Karlsruhe University of Applied Sciences) Lab test is intended to provide a better understanding of the cooling system in in different climate zones.

• Publication date : 2023/10/27

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

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

Ice cream manufacturing, environmental impact and market data

From a physico-chemical point of view, ice cream is a complex, frozen multiphase mixture. The manufacturing process includes several stages of freezing which are described in this...

• Last update : 2023/06/30
• Langues : French, English
• Themes : Ice creams

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

Environmental impact of the ice cream industry

This summary document describes the environmental impact of ice cream manufacturing, which is mainly due to the energy consumption and refrigerants used.

• Last update : 2022/11/17
• Langues : French, English
• Themes : General information on environment (climate change, ozone depletion…)