Industries And Solutions - Industrial purification heat recovery

Air-to-Air Heat Recovery System for Seaweed Drying

Efficient Dehumidification, Ventilation and Waste Heat Recovery

Seaweed drying processes require stable temperature control, high air circulation, and effective moisture removal to ensure product quality and drying efficiency. During continuous operation, large volumes of warm and humid exhaust air are discharged from the drying chamber, carrying a significant amount of recoverable sensible heat. Without recovery, this energy is wasted, resulting in high operating costs and increased drying time.

The Air-to-Air Heat Recovery System for seaweed drying is specifically designed to recover waste heat from exhaust air while maintaining effective dehumidification and ventilation. The system is built around a plate-type heat exchanger core, allowing high-temperature, high-humidity exhaust air to transfer heat to incoming fresh air through fully separated channels. This indirect heat exchange process prevents air mixing, ensuring clean operation and eliminating the risk of moisture or odor backflow.

By preheating fresh air before it enters the drying chamber, the system significantly reduces the heating load of electric heaters, hot air furnaces, or steam systems. At the same time, the exhaust air temperature is lowered, and excess moisture is removed through controlled condensation, improving overall dehumidification performance and stabilizing the drying process.

The plate heat exchanger core features a compact structure, high heat transfer efficiency, and low air resistance, making it suitable for long-term continuous operation in high-humidity environments. The system is equipped with a condensate drainage design to handle moisture effectively and maintain stable performance.

With low operating energy consumption and a modular configuration, the heat recovery system can be easily integrated into both new seaweed drying lines and existing equipment upgrades. By recovering waste heat that would otherwise be lost, the system helps reduce energy consumption, shorten drying cycles, and improve production efficiency, providing a reliable and energy-saving solution for modern seaweed processing facilities.

Exhaust Gas Heat Recovery System

In many industrial applications such as drying, pelletizing, textile finishing, food processing, and ventilation systems, a large amount of high-temperature exhaust gas is discharged continuously during operation. This exhaust gas contains valuable sensible heat, which is often released directly into the atmosphere, resulting in significant energy waste and high operating costs.

The Exhaust Gas Heat Recovery System is designed to capture and reuse this wasted heat, improving overall energy efficiency and reducing fuel and electricity consumption.

The system is built around a plate-type air-to-air heat exchanger core. High-temperature exhaust gas and fresh intake air flow through separate and fully isolated channels within the heat exchanger. Heat is transferred through the plates without any mixing of air streams, ensuring clean operation and preventing odor, moisture, or contaminant carryover.

Recovered heat is used to preheat fresh air supplied back into the production process, such as drying chambers, pellet coolers, or make-up air systems. By increasing the inlet air temperature, the load on heaters, burners, or steam systems is significantly reduced, leading to lower energy consumption and operating costs.

The plate heat exchanger core features a compact structure, large heat transfer surface, and low air resistance, making it suitable for continuous industrial operation. The system also helps reduce exhaust gas temperature and humidity, easing the burden on downstream cooling, deodorization, or dehumidification equipment.

One of the key advantages of the Exhaust Gas Heat Recovery System is its low operating cost. No additional heating or cooling energy is required, and power consumption is mainly limited to fans. The modular design allows flexible configuration according to air volume, temperature, and process requirements, making the system suitable for both new installations and retrofit projects.

By recovering waste heat that would otherwise be lost, the Exhaust Gas Heat Recovery System provides a practical solution for energy saving, cost reduction, and sustainable industrial operation, while maintaining stable process performance and improved working environments.

티트리버섯 및 표고버섯 건조실용 공기 대 공기 열교환 시스템

During the drying process of tea tree mushrooms and shiitake mushrooms, a stable supply of hot air is required to remove moisture, while large volumes of high-temperature, high-humidity exhaust air are continuously discharged. In conventional drying systems, this exhaust air is released directly to the atmosphere, and fresh cold air must be reheated, resulting in low energy efficiency and high operating costs.

By installing a waste heat recovery air-to-air heat exchanger between the exhaust and supply air streams, the thermal energy contained in the discharged hot air can be effectively recovered and reused to preheat the incoming fresh air. This enables high-temperature heat energy circulation within the drying system. The supply air and exhaust air remain completely separated during heat exchange, preventing moisture, odors, and contaminants from returning to the drying chamber and ensuring consistent product quality.

Under continuous high-temperature operating conditions, the air-to-air heat exchanger significantly increases the inlet air temperature, reducing the energy demand of electric heaters, biomass burners, or gas-fired systems. For large-scale or long-hour drying operations, the energy-saving effect is particularly evident.

The waste heat recovery system features a compact structure, flexible installation, and easy integration with existing drying rooms without altering the original process. It operates reliably with low maintenance requirements, helping to reduce energy consumption, minimize heat loss, and improve overall thermal efficiency, making it an ideal solution for energy-saving upgrades in mushroom drying facilities.

내식성 공기 열교환 코어 및 열펌프 건조 시스템용 제습 열회수 장비

In heat pump drying applications, especially for seafood processing, chemical sludge, and other salt-laden materials, the drying and baking environment places extremely high demands on air heat exchange equipment. Exhaust air often contains large amounts of water vapor, salt mist, and corrosive substances. Conventional aluminum heat exchangers are prone to corrosion, perforation, rapid efficiency loss, and frequent failures. For these harsh conditions, corrosion-resistant air heat exchange cores combined with dehumidification and exhaust heat recovery equipment are essential to ensure long-term stable operation of heat pump drying systems.

1. Typical Operating Conditions

Drying exhaust air from seafood processing and chemical sludge treatment usually has the following characteristics:

High humidity with large volumes of condensate
Presence of salt mist or chemical corrosive components
Continuous operation under medium to high temperatures
Long operating cycles with limited downtime for maintenance
High reliability requirements for heat pump systems

These conditions require heat exchange cores with excellent resistance to corrosion, condensation, and thermal stress.

2. Key Design Features of Corrosion-Resistant Air Heat Exchange Cores

1. Corrosion-Resistant Materials

The heat exchange core is manufactured using stainless-steel foil (304 / 316L) or other high-corrosion-resistant composite materials, effectively resisting salt mist, chloride ions, and chemical corrosion while significantly extending service life.

2. Air-to-Air Isolated Heat Exchange Structure

An air-to-air heat exchange design ensures complete separation between exhaust air and make-up air, preventing salt mist and corrosive components from entering the heat pump system.

3. Low-Resistance, Large-Channel Design

Wide airflow passages and low pressure drop support high-humidity, large-airflow drying chambers, minimizing fouling and blockage.

4. Efficient Condensate Drainage and Anti-Liquid Accumulation Design

Vertical airflow configuration combined with a bottom condensate collection tray enables rapid drainage, preventing liquid accumulation and corrosion.

3. Integrated Dehumidification, Exhaust Air Discharge, and Heat Recovery Principle

Within a heat pump drying system, the corrosion-resistant air heat exchange core works in coordination with the dehumidification and exhaust heat recovery module:

High-humidity hot air from the drying chamber enters the dehumidification heat exchange section.
Water vapor condenses on the surface of the heat exchange core and is discharged.
Latent and sensible heat released during condensation is recovered.
Recovered heat is used to preheat make-up air or recirculated air.
Reduced air humidity improves drying efficiency.
Heat pump load decreases, enhancing overall system energy efficiency.

This integrated process achieves both moisture removal and energy recovery simultaneously.

4. Application Areas

This type of corrosion-resistant air heat exchange core and heat recovery equipment is particularly suitable for:

Seafood drying and processing (fish, shrimp, seaweed)
Salt-containing agricultural and aquatic products
Chemical sludge and salt-bearing sludge drying
Heat pump drying systems for high-salinity waste materials
Drying chambers in coastal or high salt-mist environments

5. System Benefits

Applying corrosion-resistant air heat exchange cores under harsh operating conditions delivers:

Stable and reliable long-term operation
Effective dehumidification with shorter drying cycles
Recovery of exhaust heat to reduce heat pump energy consumption
Significantly reduced corrosion risk and maintenance costs
Extended service life and improved system reliability

6. Conclusion

In high-salinity, high-humidity, and corrosive drying environments such as seafood processing and chemical sludge treatment, conventional heat exchange equipment cannot ensure stable operation. The use of dedicated corrosion-resistant air heat exchange cores combined with dehumidification and exhaust heat recovery equipment provides a reliable, energy-efficient solution for heat pump drying systems. It represents a key enabling technology for safe, economical, and sustainable operation in complex drying conditions.

전체 스테인리스 스틸 공기-공기 판형 열교환기를 사용한 섬유 스텐터 기계용 배기열 회수 개조

Textile stenter machines generate high-temperature exhaust containing oil mist, fiber dust, additives, and high humidity, which often leads to corrosion, fouling, and unstable system operation. To address these challenges, a full stainless-steel air-to-air plate heat exchanger is used for exhaust heat recovery, integrating vertical exhaust channels, flat-plate passage structures, vertical spray washing, and a bottom condensate/ sludge settling tank. These optimized designs ensure reliable heat recovery specifically tailored for the textile printing and dyeing industry.

1. Application Background

Typical characteristics of stenter machine exhaust:
• Temperature 120–180°C
• Contains oil mist, fiber particles, chemical additives
• High moisture content; risk of condensation and corrosion
• Tendency to cause fouling and blockage in conventional heat exchangers

Aluminum exchangers cannot handle these harsh conditions. A full stainless-steel design with specialized structures is required to ensure long-term stable performance.

2. Key Structural Features

1. Full Stainless-Steel Heat Transfer Plates (304 / 316L)

• Excellent resistance to acidic condensate and dyeing chemicals
• High thermal and mechanical stability at elevated temperatures
• Supports high-frequency washing without deformation
• Considerably longer service life than aluminum plates

2. Flat Exhaust Passage Design

• Smooth, wide flow channels prevent fiber and oil mist accumulation
• Extended maintenance intervals
• Lower pressure drop, ideal for the large airflow of stenter machines

3. Vertical Exhaust Flow (L-Shaped Flow Path)

• Exhaust flows vertically downward or from top-side down
• Gravity assists removal of oil droplets and particles
• Reduces fouling on plate surfaces and prolongs cleaning cycles
• Enhances drainage efficiency during spray washing

4. Vertical Spray Cleaning System

• Periodic spray washing removes oil, fiber dust, and chemical residue
• Prevents fouling and restores heat transfer performance
• Allows online cleaning without dismantling the heat exchanger

5. Bottom Wastewater and Sludge Settling Tank

• Collects oil-contaminated water and fiber particles washed from plates
• Facilitates proper drainage and disposal
• Prevents recontamination of the heat exchanger
• Easy-to-clean structure, independent from the upper heat exchange area

3. Working Principle

High-temperature exhaust enters the vertical flat channels.
Heat is transferred through stainless-steel plates to the fresh-air side.
Moisture condenses and carries oil/dirt downward into the settling tank.
Fresh air absorbs waste heat and is preheated for reuse in the stenter machine or workshop ventilation.
Cooled exhaust is then discharged to downstream treatment (RTO, carbon adsorption, fans) with reduced thermal load.
The spray system periodically washes the exhaust channels to maintain stable efficiency.

Airflows remain completely separated to avoid cross-contamination.

4. Technical Advantages

1. Engineered Specifically for Textile Stenter Exhaust

Resistant to high temperature, corrosion, oil fumes, and fiber dust—solving long-standing issues in the dyeing and finishing industry.

2. Significant Energy Savings

Recovering exhaust heat to preheat fresh air can reduce gas, steam, or electric heating consumption by 20–35%.

3. Anti-Fouling, Stable Operation

Flat channels + vertical airflow + spray washing prevent blockages common in stenter exhaust systems.

4. Protects Downstream Equipment

Lower exhaust temperature reduces load on RTO, ducts, and fans, improving service life and reliability.

5. Low Maintenance

Routine spray cleaning and simple sludge removal are sufficient; no frequent disassembly required.

5. Typical Applications

• Textile heat-setting stenter machines
• Stretching, drying, and heat-setting production lines
• High-temperature exhaust with oil mist and fiber dust
• Pre-cooling and energy recovery before VOC treatment systems

BXB 에너지 절약형 꽃 및 허브 건조용 열교환기

고효율 폐열 회수 · 건조 에너지 소비 감소 · 제품 품질 향상

꽃, 꽃잎, 허브, 향초 등을 건조하는 과정에서 다량의 덥고 습한 공기가 배출됩니다. 이 배기가스에는 상당한 양의 재사용 가능한 열이 포함되어 있습니다. BXB 에너지 절약형 열교환기는 배기가스에서 현열과 잠열의 일부를 포집하여 신선한 공기나 환기를 예열하는 데 사용함으로써 에너지 낭비를 크게 줄입니다.

작동 원리

뜨거운 배기가 열교환기로 들어갑니다. 건조기에서 나온 후.
열은 신선한 공기로 전달됩니다, 신선한 공기 온도를 빠르게 높입니다.
배기 공기 온도 및 습도 저하 열교환 후 배출 조건이 개선됩니다.
예열된 신선한 공기가 건조기로 돌아갑니다.히터 부하와 에너지 소비를 줄입니다.

이 공정은 꽃과 허브 건조에 특히 적합한데, 색상, 향기, 품질을 보존하기 위해 안정적인 온도 조절이 중요합니다.

주요 장점

에너지 절약
BXB 구조는 넓은 열교환 표면적과 낮은 공기 저항을 제공하여 폐열의 상당 부분을 회수합니다. 일반적으로 에너지 소비를 20~40%까지 줄일 수 있습니다.

안정적인 건조 품질
예열된 공기는 유입 온도를 보다 안정적으로 유지하여 온도 변동을 줄이고 말린 꽃과 허브의 자연스러운 색상, 향, 모양을 유지하는 데 도움이 됩니다.

개선된 배기 조건
냉각 후 배기가스는 습도가 낮아지고 배출이 쉬워지며, 장비에 가해지는 열 스트레스와 습기의 영향이 줄어듭니다.

저온 건조에 최적화
꽃과 허브 건조에는 섬세하고 정밀한 온도 제어가 필요합니다. BXB 열교환기는 전반적인 안정성을 향상시키고 공정 제어성을 향상시킵니다.

유연한 설치
원래 건조 공정을 변경하지 않고도 새로운 건조 라인과 개조 프로젝트에 모두 적합합니다.

응용 분야

꽃 말리기
장미 꽃잎, 카모마일, 라벤더, 재스민, 인동덩굴 및 기타 섬세한 꽃 소재.

허브 건조
활성 성분을 보존하기 위해 저온 건조가 필요한 잎이나 꽃 형태의 약초입니다.

방향성 식물 건조
향기를 유지하기 위해 온도 조절이 필요한 소재입니다.

농업 기지, 약초 가공 공장, 꽃 건조 작업장, 식품 가공 공장 등에 적용 가능합니다.

광산 배기열 회수로 난방비 절감

광산 배기가스 폐열 회수 시스템으로 폐기물을 부로 전환하세요! 이 혁신적인 솔루션은 광산 환기에서 최대 60%의 열을 회수하여 지상 시설에 비용 효율적인 난방을 제공합니다.

주요 장점:

에너지 회수: 배출되는 열을 사용 가능한 온기로 변환합니다.
비용 절감: 혹독한 기후에서 난방 비용을 절감합니다.
향상된 안전성: 지하 작업 환경을 개선합니다.

입증된 절감 효과!한랭지 광산은 난방비를 25% 절감했습니다. 운영 방식을 업그레이드하려면 지금 바로 연락하세요!

나셀 냉각 시스템으로 풍력 발전 강화

Maximize wind turbine performance with our Wind Turbine Nacelle Cooling System! Designed to manage internal temperatures, this system extends equipment life and recovers heat, boosting efficiency in all weather conditions.

Why It’s Superior:

Durability: Prevent overheating for longer-lasting components.
Peak Efficiency: Maintain optimal turbine output.
Heat Recovery: Reuse heat for additional benefits.

Real Success!An offshore wind farm boosted efficiency by 20%. Power up your turbines—reach out today!

간접 증발 냉각 시스템으로 스마트하게 쿨링하세요

Beat the heat efficiently with our Indirect Evaporative Cooling System! Ideal for data centers and commercial buildings, this system cuts cooling energy by up to 50% using water evaporation without humidifying air.

Top Benefits:

Energy Savings: Reduce cooling costs dramatically.
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Proven Performance!A data center saved 35% on cooling costs. Upgrade your cooling solution now!

연기 미백 시스템으로 공기를 맑게 하세요

저희 연기 제거 시스템으로 환경 보호에 앞장서세요! 산업 현장에 적합한 이 기술은 눈에 보이는 연기를 제거하고 열을 회수하며 엄격한 배출 기준을 준수합니다.

왜 이것이 필수적인가:

더 깨끗한 공기: 더 건강한 환경을 위해 미세먼지를 줄이세요.
규제 성공: 배출 규정을 충족하고 초과 달성합니다.
에너지 스마트: 회수된 열을 재활용하여 효율성을 높입니다.

인상적인 효과!한 화학 공장에서 가시광선 배출량을 95% 감소시켰습니다. 녹색 혁명에 동참하세요. 지금 바로 연락주세요!

카테고리 아카이브 산업 및 솔루션