shaohai - Industrial purification heat recovery

ਕੋਲਾ ਖਾਨ ਵੈਂਟੀਲੇਸ਼ਨ ਸ਼ਾਫਟ ਵਾਪਸੀ ਹਵਾ ਰਹਿੰਦ-ਖੂੰਹਦ ਗਰਮੀ ਉਪਯੋਗਤਾ ਪ੍ਰੋਜੈਕਟਾਂ ਵਿੱਚ ਵਿਚਕਾਰਲੇ ਕੰਧ ਹੀਟ ਐਕਸਚੇਂਜਰਾਂ ਦੀ ਭੂਮਿਕਾ

In the coal mine ventilation shaft exhaust heat utilization project, the intermediate wall-type heat exchanger is a critical piece of equipment for safely transferring heat. Its role is not only about heat exchange efficiency but also about ensuring system safety and operational reliability. The specific functions of the intermediate wall-type heat exchanger are as follows:

To achieve the objectives of shaft freeze protection and winter heating in the auxiliary shaft area, the intermediate wall-type heat exchanger is responsible for safely isolating high-temperature return air from fresh air or clean media while enabling efficient heat exchange. Its primary functions include:

Efficient recovery and utilization of return air waste heat

Utilizing the significant sensible heat carried by return air, the heat is stably transferred to fresh air or hot water systems through the metal intermediate wall, raising the temperature of incoming fresh air into the shaft to above 2°C, meeting freeze protection requirements.

Ensuring cleanliness and safety during heat exchange

Return air contains dust, moisture, and even trace harmful gases, which cannot directly enter the fresh air system. The intermediate wall structure effectively isolates hot and cold media, preventing cross-contamination and ensuring underground air quality and operational safety.

Enhancing the operational reliability of the heating system

The heat exchanger has a robust structure and stable operation, continuing to output heat even under extreme cold conditions. This ensures the continuity and reliability of winter heating in the auxiliary shaft, reducing the operational burden and risks associated with traditional electric heating and boiler systems.

Promoting energy conservation, emissions reduction, and green mine development

Through efficient heat exchange, heating energy consumption and operational costs are significantly reduced, lowering carbon emissions. This provides technical support for coal mines to achieve clean production and green transformation.

Translated with DeepL.com (free version)

ਕੁਸ਼ਲ, ਵਾਤਾਵਰਣ-ਅਨੁਕੂਲ, ਅਤੇ ਭਰੋਸੇਮੰਦ—QIYU ਏਅਰ-ਕੂਲਡ ਚਿਲਰ, ਤੁਹਾਡਾ ਪ੍ਰਮੁੱਖ ਉਦਯੋਗਿਕ ਕੂਲਿੰਗ ਹੱਲ!

ZIBO QIYU Aircondition Energy Equipment CO., LTD., a leader in indoor air quality research, is committed to providing efficient and eco-friendly HVAC solutions. Our air-cooled chiller series, featuring advanced technology and stable performance, is widely used in industries such as plastics, electronics, electroplating, food processing, pharmaceuticals, ink printing, vacuum forming, injection molding, laser processing, metal casting, blow molding, precision machinery, glass craftsmanship, jewelry processing, leather, aquaculture, papermaking, milk freezing, and chemical manufacturing. It helps you achieve energy savings and boost production efficiency.

Key Advantages:

Energy-Saving and Eco-Friendly: Uses R410A eco-friendly refrigerant with no cooling tower required, saving water resources and installation space—ideal for arid regions (e.g., northern China). Delivers efficient hourly cooling, minimizing carbon emissions and creating a green, healthy work environment.
High-Efficiency and Stable Operation: Equipped with top-brand compressors (e.g., Panasonic, Sanyo), renowned pumps, and axial fans for low noise, high pressure, and rapid heat dissipation. Fully automatic remote control system (Taiwanese controller) with temperature precision to 0.1°C and adjustable range of 5~30°C, supporting 24/7 continuous operation.
Smart Safety Protection: Integrates multiple electrical safeguards including phase loss/reversal, high/low pressure, overload, water level, and anti-freezing protection. Pre-commissioned at factory—simply connect power and water lines for immediate operation.
Flexible Customization: Optional features include stainless steel pumps, housings, multiple chilled water inlets/outlets, copper evaporators (higher heat exchange efficiency), negative pressure suction systems, or remote control to adapt to diverse environments.

Comprehensive Specifications, Superior Performance: Cooling capacity ranges from 2.4Kw to 73.5Kw with multiple models (e.g., LSJ series). Condenser features copper tubes + hydrophilic aluminum fins, evaporator uses stainless steel coil or shell-and-tube design, and 304 stainless steel tank enables automatic water replenishment for long-term durability.

Choose QIYU Air-Cooled Chiller for an efficient, reliable, and eco-friendly industrial partner! Contact us today to start your energy-saving cooling journey.

ਗੈਸ-ਗੈਸ ਪਲੇਟ ਹੀਟ ਐਕਸਚੇਂਜਰ ਕੀ ਹੁੰਦਾ ਹੈ?

Gas-Gas Plate Heat Exchanger

A gas-gas plate heat exchanger is a highly efficient heat transfer device designed to recover heat from high-temperature exhaust gases and transfer it to incoming cold air or other gas streams. Unlike traditional heat exchangers, its compact plate structure maximizes the heat transfer surface area, achieving thermal efficiencies of 60% to 80%. The exchanger consists of thin, corrugated metal plates (typically stainless steel) that create separate channels for hot and cold gases, allowing heat to pass through the plates without mixing the gas streams.

This technology is particularly suited for industrial processes that generate significant waste heat, such as drying systems in ultrasonic cleaning machines used for hardware components. By capturing and reusing this heat, the gas-gas plate heat exchanger reduces the energy required for heating processes, lowering operational costs and carbon emissions.

ਈਥੀਲੀਨ ਗਲਾਈਕੋਲ ਹੀਟ ਰਿਕਵਰੀ ਵੈਂਟੀਲੇਸ਼ਨ ਯੂਨਿਟ

An ethylene glycol heat recovery ventilation unit is an air handling device that uses ethylene glycol solution as a heat transfer medium to recover heat or cooling energy from exhaust air, improving the energy efficiency of air conditioning systems. It is widely used in places requiring strict separation of fresh and exhaust air, such as hospitals, laboratories, and industrial facilities.

Working Principle

The ethylene glycol heat recovery ventilation unit achieves energy recovery through a heat exchanger and ethylene glycol solution:

Exhaust Side: The cooling or heating energy in the exhaust air is transferred to the ethylene glycol solution via a heat exchanger, altering the solution's temperature.
Fresh Air Side: A circulation pump delivers the cooled or heated ethylene glycol solution to the fresh air side's heat exchanger, adjusting the fresh air temperature to reduce the operating load and energy consumption of the air conditioning system.
Heat Recovery Efficiency: The heat recovery efficiency of the ethylene glycol solution can reach about 50%, depending on system design and operating conditions.

System Components

Fresh Air Side: Fresh air section, primary/medium efficiency filter section, ethylene glycol heat exchanger, and supply fan section.
Exhaust Side: Return air section, primary efficiency filter section, ethylene glycol heat exchanger, and exhaust fan section.

Applications

Suitable for scenarios requiring complete isolation of fresh and exhaust air, such as hospitals and cleanrooms.
Ideal for industrial or commercial buildings needing efficient energy recovery, such as factories and transportation facilities.

ਲਾਭ

High Energy Efficiency: Reduces air conditioning system energy consumption through heat recovery, lowering operating costs.
Flexibility: Adjusts fresh air temperature based on varying climate conditions, adapting to diverse environments.
Safety: Ethylene glycol solution prevents heat exchanger freezing in low-temperature environments.

Considerations

Maintenance: Regular checks on the ethylene glycol solution concentration and circulation pump operation are necessary.
Design Requirements: System design must consider the layout of fresh and exhaust air ducts to ensure efficient heat exchange and prevent cross-contamination.

ਤਰਲ ਸਰਕੂਲੇਸ਼ਨ ਊਰਜਾ ਰਿਕਵਰੀ ਹੀਟ ਐਕਸਚੇਂਜ ਸਿਸਟਮ

The liquid circulation energy recovery heat exchange system uses ethylene glycol solution as the heat transfer medium, and transfers the cold (heat) in the exhaust air to the ethylene glycol solution through a heat exchanger on the exhaust side, reducing (increasing) the temperature of the ethylene glycol solution. Then, the cooled (heated) ethylene glycol solution is transported to the heat exchanger on the fresh air side through a circulation pump, reducing (increasing) the temperature of the fresh air, reducing the load on the fresh air system, and reducing the operating cost of the entire air conditioning system.

The liquid circulation energy recovery circulation system consists of an exhaust side heat exchanger, a fresh air side heat exchanger, connecting pipelines, and necessary accessories. Energy recovery is achieved through an ethylene glycol solution circulation pump, and the entire system is relatively complex. The ethylene glycol heat recovery module solves the problem of multiple connecting components and complex structure in the circulation system, and improves the reliability and safety of the heat exchange system. Fresh air and exhaust air will not produce cross pollution, making them more suitable for completely isolated supply and exhaust air, and even remote end supply air systems.

ਤਰਲ ਸਰਕੂਲੇਸ਼ਨ ਊਰਜਾ ਰਿਕਵਰੀ ਹੀਟ ਐਕਸਚੇਂਜ ਸਿਸਟਮ

ਸੁਕਾਉਣ ਵਾਲੀਆਂ ਨਿਕਾਸ ਗੈਸਾਂ ਤੋਂ ਗਰਮੀ ਕਿਵੇਂ ਪ੍ਰਾਪਤ ਕੀਤੀ ਜਾਵੇ

Recovering heat from exhaust gases of industrial drying processes is an effective way to improve energy efficiency, reduce costs, and lower emissions. Below is a concise guide on how to recover heat from dryer exhaust gases, focusing on practical steps, technologies, and considerations, tailored to your interest in air-to-air heat exchangers and waste heat recovery systems.

Steps to Recover Heat from Dryer Exhaust Gases

Assess Exhaust Gas Characteristics:
- Measure the temperature (typically >60°C for dryers), flow rate, and composition of the exhaust (e.g., moisture, dust, or corrosive elements).
- Determine the sensible (temperature-based) and latent (moisture-based) heat content.
- Example: Spray dryer exhaust in food processing may be 80–150°C with high humidity.
Identify Heat Sink Opportunities:
- Find nearby processes that can use recovered heat, such as preheating dryer inlet air, heating process water, or supplying facility HVAC.
- Prioritize direct integration (e.g., preheating dryer air) for maximum efficiency.
Select Appropriate Heat Recovery Technology:
- Air-to-Air Heat Exchangers (Primary Focus):
  - Plate Heat Exchangers: Use metal or polymer plates to transfer heat from exhaust to incoming air. Polymer plates resist corrosion and fouling from moist, dusty exhaust.
  - Rotary Heat Exchangers: Rotating wheels transfer heat, ideal for high-volume flows.
  - Application: Preheat dryer inlet air, reducing fuel use by up to 20%.
- Air 빨간색-Liquid Heat Exchangers:
  - Transfer heat to water or thermal oil for process heating or boiler feedwater.
  - Application: Heat cleaning water in food or chemical plants.
- Heat Pumps:
  - Upgrade low-temperature exhaust heat for reuse in drying or other processes.
  - Application: Boost heat for dryer air preheating in dairy processing.
- Direct Contact Heat Exchangers:
  - Exhaust gases contact water to recover heat and clean contaminants.
  - Application: Suitable for kilns or dryersWITH acidic exhaust.
- Waste Heat Boilers:
  - Generate steam from high-temperature exhaust for process use or power.
  - Application: High-temperature dryers in ceramics.
Design and Install the System:
- Work with a supplier to design a system tailored to your dryer’s exhaust conditions and heat sink needs.
- Ensure materials (e.g., polymer or stainless steel) resist fouling and corrosion.
- Install the heat exchanger downstream of the dryer, with filters or scrubbers if dust is present.
- Example: A polymer air-to-air exchanger can be retrofitted to a spray dryer to preheat inlet air, reducing energy costs.
Monitor and Optimize Performance:
- Use sensors to track temperature, flow, and efficiency of heat recovery.
- Clean heat exchangers regularly to prevent fouling.
- Adjust system settings to maximize heat transfer based on production demands.

Waste Heat Recovery Systems for Industrial Dryers

Waste heat recovery systems for industrial dryers capture and reuse thermal energy from hot exhaust gases or air streams to improve energy efficiency, reduce operating costs, and lower emissions. These systems are valuable for energy-intensive drying processes in industries like chemical, food, ceramics, and textiles. Below, I outline key technologies, benefits, and U.S.-based suppliers with contact information.

Key Technologies for Waste Heat Recovery in Industrial Dryers
Industrial dryers produce hot, moist exhaust air containing sensible and latent heat. Recovery systems extract this heat for reuse. Common technologies include:

Air-to-Air Heat Exchangers:
Transfer heat from hot exhaust air to incoming fresh air via plate or rotary heat exchangers. Polymer air preheaters resist corrosion and fouling.
Applications: Preheating dryer inlet air, reducing fuel consumption by up to 20%.
Advantages: Simple, cost-effective, low maintenance.
Air-to-Liquid Heat Exchangers:
Capture heat from exhaust to warm liquids for process heating or facility HVAC.
Applications: Heating process water in food processing plants.
Advantages: Versatile heat reuse.
Heat Pumps:
Upgrade low-temperature waste heat to higher temperatures for reuse.
Applications: Lifting heat for dryer air preheating in chemical or dairy industries.
Advantages: High efficiency for low-temperature sources.
Direct Contact Heat Exchangers:
Hot exhaust gases directly contact a liquid to transfer heat, often cleaning flue gas contaminants.
Applications: Recovering heat from kilns, ovens, or dryers.
Advantages: Cleans exhaust while recovering heat.
Waste Heat Boilers:
Convert high-temperature exhaust into steam for process use or power generation.
Applications: High-temperature dryers in ceramics or minerals processing.
Advantages: Generates steam or electricity.
Benefits of Waste Heat Recovery for Dryers
Energy Savings: Efficiency improvements of up to 20%.
CO2 Reduction: Every 1% efficiency gain cuts CO2 emissions by 1%.
Cost Reduction: Payback periods from months to 3 years.
Environmental Compliance: Reduces emissions and waste heat release.
Process Optimization: Stable temperatures enhance product quality.
Challenges and Solutions
Fouling and Corrosion: Polymer heat exchangers or in-line cleaning systems mitigate issues.
Heat Sink Availability: Requires nearby heat use for economical integration.
System Design: Custom engineering ensures compatibility.

ਸੁਕਾਉਣ ਵਾਲੇ ਉਪਕਰਨਾਂ ਵਿੱਚ ਗੈਸ-ਤੋਂ-ਗੈਸ ਹੀਟ ਰਿਕਵਰੀ ਤਕਨਾਲੋਜੀ ਦਾ ਊਰਜਾ-ਬਚਤ ਪ੍ਰਦਰਸ਼ਨ

Gas-to-gas heat recovery technology significantly enhances the energy efficiency of drying equipment by recovering waste heat from hot exhaust gases and transferring it to the incoming cold air. This process reduces the energy demand for heating fresh air, thereby lowering fuel consumption and operating costs.

In drying systems, especially in industries like food processing, tobacco, paper, and sludge treatment, a large amount of thermal energy is typically lost through exhaust air. By integrating a gas-to-gas heat exchanger—commonly made from aluminum or stainless steel foil—this waste heat is captured and reused. The recovered energy can preheat the inlet air by 30–70%, depending on the system configuration and operating conditions.

Field applications have shown that the use of gas-to-gas heat recovery systems can reduce energy consumption by 15% to 35%, shorten drying cycles, and improve overall system efficiency. Additionally, it contributes to lower carbon emissions and better thermal control, making it a sustainable and cost-effective solution for modern drying processes.

Heat Recovery Fresh Air Unit

The heat recovery fresh air unit is an energy-efficient ventilation system that introduces fresh outdoor air while recovering heat from the exhaust air. It uses a heat exchanger—typically a plate-type or rotary wheel exchanger—to transfer thermal energy between incoming and outgoing airstreams without mixing them, significantly reducing heating or cooling loads.

Constructed with high-efficiency filters, fans, and a heat exchanger core (commonly aluminum or enthalpy material), the system ensures a continuous supply of fresh air while maintaining indoor temperature stability and improving air quality. It helps reduce energy consumption, enhance indoor comfort, and comply with modern building energy-saving standards.

These units are ideal for applications in offices, factories, schools, hospitals, and other facilities requiring reliable ventilation and temperature control with reduced operating costs.

Industrial heat recovery box, waste gas and heat recovery, gas to gas heat exchanger

The industrial heat recovery box is a compact and efficient system designed for recovering heat from waste gas streams in various industrial applications. It utilizes a gas-to-gas heat exchanger to transfer thermal energy from hot exhaust gases to incoming fresh air without mixing the two airstreams. This process significantly improves energy efficiency by reducing the need for additional heating, leading to lower operational costs and reduced environmental impact.

Constructed with durable materials such as aluminum or stainless steel, the system is capable of withstanding high temperatures and corrosive environments. The internal heat exchanger, often made of aluminum foil or plates, ensures high thermal conductivity and efficient heat transfer. The design prevents cross-contamination between dirty exhaust air and clean supply air, making it suitable for industries such as food processing, tobacco, printing, chemical, and sludge treatment.

This energy-saving solution not only recovers waste heat but also helps improve indoor air quality and maintain stable production environments. Easy to install and maintain, the industrial heat recovery box is a smart choice for factories aiming to enhance sustainability and meet energy-saving regulations.

Industrial heat recovery box, waste gas and heat recovery, gas to gas heat exchanger

ਉਦਯੋਗਿਕ ਸ਼ੁੱਧਤਾ ਗਰਮੀ ਰਿਕਵਰੀ

ਲੇਖਕ ਪੁਰਾਲੇਖ shaohai

ਕੁਸ਼ਲ, ਵਾਤਾਵਰਣ-ਅਨੁਕੂਲ, ਅਤੇ ਭਰੋਸੇਮੰਦ—QIYU ਏਅਰ-ਕੂਲਡ ਚਿਲਰ, ਤੁਹਾਡਾ ਪ੍ਰਮੁੱਖ ਉਦਯੋਗਿਕ ਕੂਲਿੰਗ ਹੱਲ!

ਗੈਸ-ਗੈਸ ਪਲੇਟ ਹੀਟ ਐਕਸਚੇਂਜਰ ਕੀ ਹੁੰਦਾ ਹੈ?

ਗੈਸ-ਗੈਸ ਪਲੇਟ ਹੀਟ ਐਕਸਚੇਂਜਰ ਕੀ ਹੁੰਦਾ ਹੈ?

ਈਥੀਲੀਨ ਗਲਾਈਕੋਲ ਹੀਟ ਰਿਕਵਰੀ ਵੈਂਟੀਲੇਸ਼ਨ ਯੂਨਿਟ

Working Principle

System Components

Applications

ਲਾਭ

Considerations

ਤਰਲ ਸਰਕੂਲੇਸ਼ਨ ਊਰਜਾ ਰਿਕਵਰੀ ਹੀਟ ਐਕਸਚੇਂਜ ਸਿਸਟਮ

ਸੁਕਾਉਣ ਵਾਲੀਆਂ ਨਿਕਾਸ ਗੈਸਾਂ ਤੋਂ ਗਰਮੀ ਕਿਵੇਂ ਪ੍ਰਾਪਤ ਕੀਤੀ ਜਾਵੇ

Steps to Recover Heat from Dryer Exhaust Gases

Waste Heat Recovery Systems for Industrial Dryers

ਸੁਕਾਉਣ ਵਾਲੇ ਉਪਕਰਨਾਂ ਵਿੱਚ ਗੈਸ-ਤੋਂ-ਗੈਸ ਹੀਟ ਰਿਕਵਰੀ ਤਕਨਾਲੋਜੀ ਦਾ ਊਰਜਾ-ਬਚਤ ਪ੍ਰਦਰਸ਼ਨ

Heat Recovery Fresh Air Unit

Industrial heat recovery box, waste gas and heat recovery, gas to gas heat exchanger

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