Key Considerations for Selecting Hermetic Condensing Units

The selection of hermetic condensing units should be approached from four core dimensions: operating condition suitability, performance compliance, safety and compliance, and long-term operating costs. Key points are as follows:

1. Core Parameter Matching

Heat Exchange Area: Determined precisely based on system heat load to avoid insufficient area leading to low condensing efficiency, or excessive area resulting in wasted investment and space.

Design Pressure and Temperature: Strictly match system operating condition boundaries; pressure resistance must exceed the actual peak operating pressure to ensure stable operation under high pressure.

Refrigeration Architecture Suitability: For cryogenic scenarios, cascade refrigeration systems are preferred. For -110℃ operating conditions, a mature binary cascade architecture is required to ensure efficient and stable operation in the cryogenic range.

2. Material and Sealing Performance

For conventional scenarios, 304/316 stainless steel is selected. For highly corrosive conditions, titanium evaporators and piping are required to avoid low-temperature brittleness and media corrosion.

Verify the overall sealing structure; prioritize models with fully welded plate-type gaskets without sealing rings or gaskets and double-end mechanical seals to eliminate the risk of refrigerant leakage.

3. Energy Efficiency and Environmental Compliance

For 2026, the annual comprehensive energy efficiency ratio (APF) of Level 1 energy efficiency models must be ≥ 4.2. Products with cold energy recovery and cascade condensation technology will be prioritized to reduce long-term energy consumption.

The refrigerant must be a low-GWP environmentally friendly model such as R-513A or R-1234ze, complying with the Kigali Amendment's requirements and mitigating the risk of subsequent policy rectification.

4. Safety and Customization Adaptability

In industrial scenarios, compressor overload protection and real-time refrigerant leakage monitoring are required. Explosion-proof conditions require DIIBT4 certification, along with supporting international safety certifications such as CE and UL.

Customization is available for special industries: Lithium battery production requires high-precision temperature control within ±0.2℃; components in contact with media in the biopharmaceutical industry must comply with GMP cleanroom standards.

5. Operational Stability Design

The core compressor will prioritize screw compressor models with long-term industrial validation, suitable for continuous heavy-load operation.

Equipped with a fully automatic defrosting function, it quickly switches between condenser modes to avoid frost buildup and blockage, ensuring no significant reduction in long-term operating efficiency.

Tianyicool is one of the excellent manufactures in commercial and industrial refrigeration field, building the its vision of being the first choice in refrigeration. For more information about hermetic condensing unit, please contact us.

Email: tianyicool@vip.163.com / info@tianyicool.cn

Address: No.9, Guangzhou Road, Pingdu City, Qingdao, Shandong,China.

Website: www.chinafrigoking.com