Waste heat recovery system helps the leather industry save energy and reduce consumption

In the core processes of leather processing, including tanning, soaking, drying, dyeing, and finishing, traditional production techniques rely heavily on high energy consuming equipment such as steam boilers and thermal oil furnaces, resulting in energy waste rates of up to 40% -60%. Direct discharge of waste heat not only leads to low energy utilization efficiency, but also faces the risk of environmental fines.

Waste heat recovery system helps the leather industry save energy and reduce consumption
[Qi Yu] Waste Heat Recovery Solution
Zibo Qiyu has been deeply involved in the research and development of plate heat exchangers for 15 years. Based on the characteristics of leather technology, Qiyu has developed a three-level system of "pre recovery+deep recovery+intelligent management", achieving a waste heat utilization rate of ≥ 90% and reducing gas consumption by 40% -60%. working principle:
Using stainless steel plate heat exchangers, the waste heat (50-80 ℃) from tanning tanks and immersion tanks is recovered and used to preheat fresh water or chemical raw materials (such as tannin extract and dyes), thereby reducing steam consumption by 25% -35%. The reaction efficiency of preheated raw materials is increased by 20%, and the tanning cycle is shortened by 12%. Introducing waste heat pump technology to boost low-grade waste heat (30-50 ℃) to above 80 ℃ for constant temperature use in the dyeing workshop; Equipped with a digital management platform, real-time optimization of production line energy consumption models.
Our advantages:
We have jointly developed with the Department of Thermal Engineering at Tsinghua University and hold 12 patents for waste heat recovery;
Member unit of China Energy Conservation Association and Vice President unit of Shandong Energy Conservation and Environmental Protection Industry Association.
We will use plate heat exchangers to lock in every minute of heat energy, making green production within reach!
Please feel free to contact me at any time.

Air to air heat exchanger made of polymer PP material

Air to air heat exchanger made of polymer PP material

An air-to-air heat exchanger transfers heat between two air streams without mixing them, often used for energy recovery in ventilation systems, industrial processes, or HVAC applications. When made from polymer polypropylene (PP), it leverages the material’s unique properties to offer a lightweight, corrosion-resistant alternative to traditional metal-based designs.

Why Polypropylene?

    • Corrosion Resistance: PP is highly resistant to chemical degradation, making it ideal for environments with corrosive gases or pollutants where metals like aluminum or steel might degrade.
    • Low Thermal Conductivity: PP has a thermal conductivity of about 0.1–0.22 W/m·K, much lower than metals (e.g., aluminum at ~200 W/m·K). However, this limitation can be offset by designing thin walls and maximizing surface area to enhance heat transfer efficiency.
    • Lightweight: PP’s density (~0.9 g/cm³) makes it significantly lighter than metals, reducing installation and structural support costs.
    • Cost-Effective: PP is generally cheaper than metals like stainless steel or titanium, and its moldability supports scalable production.
  • Temperature Range: PP can operate effectively between -25°C to +100°C (or slightly higher depending on the grade), suitable for many air-to-air applications, though it’s less tolerant of extreme heat compared to metals.

    Air to air heat exchanger made of polymer PP material

    Air to air heat exchanger made of polymer PP material

Air Conditioner for Energy Storage Cabin Cooling

Air Conditioners for Energy Storage Cabin Cooling

Air Conditioners for Energy Storage Cabin Cooling

Energy storage cabins—housing batteries, inverters, or other heat-generating equipment—require precise cooling to maintain operational efficiency and equipment longevity. These cabins, often used in renewable energy setups (solar farms, wind energy storage), telecom systems, or off-grid power solutions, face unique challenges: compact space, high heat loads, and sometimes remote locations with limited power access. A well-chosen air conditioner ensures temperatures stay within safe ranges (typically 15°C–35°C for lithium-ion batteries) while optimizing energy use.

Air Conditioners for Energy Storage Cabin Cooling

Air Conditioners for Energy Storage Cabin Cooling

Why Wall-Mounted Air Conditioners?

Wall-mounted units, especially ductless mini-split systems, are a top choice for energy storage cabins:

    • Space Efficiency: Mounted high on a wall, they free up floor space in tight cabins (e.g., 10x10 ft or smaller).
    • Targeted Cooling: They cool only the cabin interior, not wasted external areas, unlike central systems.
    • Energy Savings: Inverter-driven compressors adjust cooling output to demand, reducing power draw compared to fixed-speed units.
  • Ease of Setup: No ducts needed—just a small wall hole for refrigerant lines and drainage.
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