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New application areas of waste heat recovery

Apr 17,2025 Leave a comment waste heat recovery

Data center heat recovery: With the rapid development of data centers, their energy consumption and heat dissipation issues are becoming increasingly prominent. Recovering the waste heat generated by data center servers and other equipment for heating, hot water supply, or preheating of other industrial processes in surrounding buildings, achieving green and energy-saving operation of data centers.

Thermal management of electric vehicle batteries: During the charging and discharging process of electric vehicle batteries, a large amount of heat is generated. Developing an efficient battery thermal management system to recover the waste heat generated by the battery for energy supply to in car heating or other auxiliary equipment can not only improve the performance and lifespan of the battery, but also enhance the overall energy utilization efficiency of electric vehicles.

Industrial waste heat driven refrigeration system: Utilizing industrial waste heat to drive absorption refrigeration, adsorption refrigeration and other systems, providing cooling capacity for the cooling needs in industrial production processes. This method can reduce the energy consumption of traditional electric refrigeration systems, achieve cascade utilization of waste heat, and improve the comprehensive utilization efficiency of energy.

Scientists have studied 3D printed heat exchangers

Apr 16,2025 Leave a comment 3D printed heat exchangers

As a key device for heat conduction, heat exchangers have penetrated into every corner of modern society, including data centers, ships, factories, and almost all kinds of buildings.

The essential function of such devices is to achieve efficient heat transfer, but at present, due to traditional manufacturing processes, mainstream products still use several standard structures with the lowest cost and simplest processing.

The latest research shows that innovative structures designed through 3D printing technology can make the core components of refrigeration equipment such as air conditioners and refrigerators smaller and more efficient. At present, the research results have been published in the International Journal of Heat and Mass Transfer.

Heat exchangers are one of the core equipment in the industrial economy, and they are an important component of every machine and every energy transmission system, "said William King, the corresponding author of this research paper and a professor at the University of Illinois at Urbana Champaign." Existing designs generally use structures that are easy to process, such as straight lines, right angles, and circular tubes

cross flow heat exchanger applications

Apr 15,2025 Leave a comment Cross flow heat exchanger

A cross flow heat exchanger is a type of heat exchanger where two fluids flow perpendicular to each other—one flows through tubes or fins, and the other flows across them. This configuration allows efficient heat transfer, often with compact design and good thermal performance.

Common Applications of Cross Flow Heat Exchangers

1. HVAC Systems (Heating, Ventilation, and Air Conditioning)

Used in air handling units and rooftop systems
Recovers heat between outgoing exhaust air and incoming fresh air
Improves energy efficiency in buildings

2. Automotive Radiators

Engine coolant flows through tubes, while air flows across fins
Helps dissipate engine heat to maintain optimal temperature

3. Industrial Process Cooling

Used in factories for cooling fluids like water, oil, or chemicals
Supports machinery, reactors, and turbines that generate waste heat

4. Air Compressors

Cools compressed air before it enters storage tanks or usage points
Prevents moisture and heat-related damage in pneumatic systems

5. Refrigeration and Heat Pump Systems

Used in evaporators and condensers
Cross flow design improves compactness and effectiveness, especially in air-to-refrigerant applications

6. Power Plants

Employed in air preheaters or cooling towers
Enhances overall thermal efficiency by recovering waste heat

7. Food and Beverage Industry

For milk pasteurization, beverage cooling, and other heat-sensitive processes
Ensures rapid and sanitary heat exchange with minimal fluid mixing

8. Electronics Cooling

Integrated in data centers and electronic cabinets
Uses cross-flow air or liquid systems to keep components at safe temperatures

The US battery industry heavily relies on China for rare earths needed

Apr 15,2025 Leave a comment

Recently, China has imposed export restrictions on rare earths to the United States. Rare earths, a key resource known as the "industrial vitamin," play a crucial role in battery manufacturing. For a long time, the US battery industry has developed a deep dependence on Chinese rare earths.
In terms of resource reserves, although the United States also has a certain scale of rare earth mines, there is a significant gap with China in terms of mining and refining technology. The only rare earth mine in the United States, Mountain Pass Mine, has only 15% of its mining output to meet domestic demand, and its separation and purification technology has long relied on Chinese patents. This results in two-thirds of the ore extracted by the United States each year having to be transported to China for refining and then re exported back to the United States. This industrial pattern, which heavily relies on China's rare earth supply chain, makes the US battery industry particularly vulnerable to China's rare earth export restrictions.

The United States increases dhttps://www.cndoi.com/wp-admin/post-new.phpeep-sea mining of metal nodules

Apr 15,2025 Leave a comment

China's implementation of export controls on seven categories of heavy rare earth related items has triggered panic in the relevant industries in the United States. British media have revealed that the United States plans to increase deep-sea mining for metal nodules as a substitute.
According to a report by the Financial Times on the 12th, the Trump administration is drafting an executive order stating that the United States is planning to stockpile metals discovered on the Pacific seabed, increase the mining of underwater metal nodules, and store them in the United States to cope with China's restrictions on rare metal exports.
Gerald Barron, CEO of Canada's Deepgreen Metal Company: The elements required for electric vehicle batteries are all in this stone, which is actually a beautiful polymetallic nodule. Remarkably, it is rich in nickel, cobalt, copper, and manganese, which are exactly what is needed to manufacture batteries.

How to avoid the adverse effects of US tariffs

Apr 15,2025 Leave a comment effects of US tariffs

However, China has a complete industrial chain, strong self-sufficiency in products, and low dependence on foreign countries. Some petrochemical industry chains have been relatively less affected by the US tariffs. At the same time, the Chinese government has also taken a series of countermeasures and policy support to help enterprises cope with challenges, such as imposing tariffs on imported goods originating from the United States and implementing export controls on medium and heavy rare earth related items. Chinese enterprises are also continuously enhancing their competitiveness by improving product quality, strengthening technological innovation, optimizing product structure, and actively responding to the adverse effects of the US tariffs.

How Chinese companies respond to US tariffs

Apr 15,2025 Leave a comment US imposes tariffs

Faced with the pressure of tariffs imposed by the United States, many Chinese companies have begun to actively explore markets in other countries and regions to reduce their dependence on the US market. By participating in various international exhibitions and strengthening trade cooperation with emerging market countries, enterprises export their products to Southeast Asia, the Middle East, Europe, Latin America and other regions, achieving market diversification and reducing single market risks.

noi toi poi doi meaning

Apr 11,2025 Leave a comment doi

Noi toi: Could be a phonetic error. In some languages:
- "Noi" in Vietnamese means "to speak" or "inner," but it’s unlikely paired with "toi."
- "Toi" in Vietnamese means "I" or "me," but "noi toi" isn’t a standard phrase.
- It might resemble "nói tới" (Vietnamese for "talk about"), but this is speculative without context.
Poi doi: This could be a corruption of "mishti doi" (sweet yogurt in Bengali).
- "Poi" doesn’t directly match any common term, but in some dialects or slang, it might relate to food or preparation (e.g., "poi" in Hawaiian is a taro-based dish, but this is unrelated).
- "Doi" aligns with the Bengali word for yogurt, as in "mishti doi."

Given the lack of clarity, the phrase might be a typo or a mix of culinary terms from different cultures, possibly influenced by your earlier question about "mishti doi." The closest meaningful interpretation, if you meant something food-related, could point back to mishti doi, meaning sweet yogurt in Bengali.

mishti doi meaning in english

Apr 10,2025 Leave a comment doi

"Mishti Doi" is a Bengali term that translates to "sweet yogurt" or "sweet curd" in English.

Mishti means "sweet" or "dessert."
Doi means "yogurt" or "curd."

It refers to a traditional Bengali dessert made from fermented milk, sweetened with sugar or jaggery, and often set in earthen pots to develop a creamy, caramelized flavor. Popular in West Bengal and Bangladesh, Mishti Doi is cherished for its rich texture and distinctive taste, commonly served at festivals or as a treat.

doi meaning medical