Select your language

Radiative cooling investigated as a method of ice protection

enfriamiento radiativo

International. Researchers have developed a biodegradable film made of cellulose acetate that, thanks to its radiative cooling properties, effectively protects from the melting of ice subjected to solar radiation, with possible applications for icy foods and glaciers.

Ice plays an important role in many aspects of life, from food preservation to sports to ice ecosystems, providing an incentive to protect ice from melting under solar radiation. Fundamentally, ice melts under sunlight due to the imbalance in the energy flow of incoming sunlight and outgoing thermal radiation.

The development of bioengineering in daytime radiative cooling offers an interesting strategy for balancing energy flows. Scientists have used a variety of materials and structures in these promising works, including stamped or multi-layer photonic structures, nanoparticle-based porous polyethylene film, cooling wood, and super-white paints with solar reflectivity greater than 0.95.

Therefore, radiative cooling can balance energy flows without energy consumption to protect ice sustainably.

- Publicidad -

To preserve ice in sunlight, several strict requirements must be met. For example, an increase in net radiation power from 70 to 110 Wm-2 can prevent ice or frozen food from melting without additional refrigeration.

In a study published in Science Advances (1), a team of scientists presents a hierarchically designed radiative cooling film developed using abundant and biodegradable cellulose acetate (CA) molecules. The film uses connected nanofibers to form multiple pores of different sizes to ideally scatter and reflect sunlight.

They monitored the evolution of the temperature of frozen foods wrapped in different materials under natural sunlight outdoors. This results in longer shelf life of iced foods covered with THE AC film below 0 degrees Celsius for 5.5 hours due to the optical properties of the packaging materials. The material provided very effective passive preservation with 98% integrity after 80 minutes of exposure to sunlight.

Using experiments with climate models, the scientists also demonstrated how THE CA film effectively protected ice systems, such as glaciers at high latitudes. Its design and excellent radiative cooling capacity made it possible to reduce the surface temperature by 4°C at high latitudes.

Source: IIR.

Duván Chaverra Agudelo
Duván Chaverra AgudeloEmail: [email protected]
Jefe Editorial de las revistas AVI Latinoamérica, ACR Latinoamérica, Ventas de Seguridad, Zona de Pinturas, Aftermarket Internation, Gerencia de Edificios, TV y Video, y Director Académico en Latin Press, Inc,.
Comunicador Social y Periodista con experiencia de más de 18 años en medios de comunicación. Apasionado por la tecnología y por esta industria.

No comments

• If you're already registered, please log in first. Your email will not be published.

Leave your comment

In reply to Some User
The HVAC/R sector will meet in Panama with ACR Latin America

The HVAC/R sector will meet in Panama with ACR Latin America

Panama. ACR Latin America invites the Panamanian community in the air conditioning and refrigeration sector to an integration night that will take place on April 24 at the Hotel Riu Plaza.

Refrimundo announces the ninth edition of the Refricon 2025 National Air Conditioning Congress

Refrimundo announces the ninth edition of the Refricon 2025 National Air Conditioning Congress

Costa Rica.  Refrimundo announced the ninth edition of the National Congress of the Day of the Technician: Refricon 2025, which will take place next Saturday, May 24, at the Convention Center of...

Smart ventilation allows cruisers to reduce their fuel consumption by up to 10%

Smart ventilation allows cruisers to reduce their fuel consumption by up to 10%

International. Demand-driven technology optimizes energy use in galleys and staterooms on cruise ships. A key improvement in HVAC systems could be setting the course for more efficient and...

Case study: Lagleyze Hospital reinforces the safety of its operating theatres with new air conditioning technology

Case study: Lagleyze Hospital reinforces the safety of its operating theatres with new air conditioning technology

Argentina. The Hospital Oftalmológico Pedro Lagleyze has just incorporated a new air conditioning system that will allow optimal conditions of temperature, humidity and air purity to be maintained...

MAHLE launches bionic radial blower inspired by the penguin: quieter, more efficient and compact

MAHLE launches bionic radial blower inspired by the penguin: quieter, more efficient and compact

International. MAHLE presented an innovation that promises to transform air conditioning systems in the automotive industry: a bionic radial blower that reduces noise by 60% and improves efficiency...

Marcelo Contreras assumes the presidency of the Chilean Chamber of Refrigeration and Air Conditioning

Marcelo Contreras assumes the presidency of the Chilean Chamber of Refrigeration and Air Conditioning

Chile. The Chilean Chamber of Refrigeration and Air Conditioning A.G. announced the appointment of Marcelo Contreras Barrera as its new president for the period 2025-2026.

Siemens appoints Miguel D'Alessio as new CEO in Colombia

Siemens appoints Miguel D'Alessio as new CEO in Colombia

Colombia. Focused on sustainability, industrial digitalization and energy storage, Siemens, a global technology company for the electrification, automation and digitalization of industries and...

Finalists of the CALA AWARDS will travel as guests to RefriAméricas Santo Domingo

Finalists of the CALA AWARDS will travel as guests to RefriAméricas Santo Domingo

Latin America. Applications for the prestigious CALA AWARDS 2025 will be open until May 10. This award, organized by ACR Latin America, is a unique opportunity to highlight the best air conditioning...

Copeland to Showcase Innovative Cold Chain Solutions at Global Cherry Summit 2025

Copeland to Showcase Innovative Cold Chain Solutions at Global Cherry Summit 2025

Chile. Copeland, a global provider of sustainable climate solutions, will participate in the Global Cherry Summit 2025, which will be held on April 22 at the Monticello Conference Center, in San...

Carrier Receives Double Recognition at the 2025 Environment + Energy Leader Awards

Carrier Receives Double Recognition at the 2025 Environment + Energy Leader Awards

United States. The company was awarded in the Energy Innovation and Software Implementation categories for its Abound solutions, which optimize energy consumption in more than 2,500 stores in the...

Free Subscription
Remember Me
SUBSCRIBE TO OUR NEWSLETTER
DO YOU NEED A SERVICE OR PRODUCT QUOTE?
LASTEST INTERVIEWS
SITE SPONSORS










LASTEST NEWSLETTER
Ultimo Info-Boletin