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Knowledge Base

Cold storage unit installation precautions and accessory selection

2026-06-12 Knowledge Base

I. Unit Installation Precautions 1. The unit has been charged with dry nitrogen. Please check before connecting to the system. The unit should use a dedicated power supply and should not share power with other electrical equipment. 2. The gro ...

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Common component functions and basic faults of refrigeration units

2026-06-12 Knowledge Base

The cold storage refrigeration system is a compression refrigeration system. Through four main processes—compression, condensation, throttling, and evaporation—of the refrigerant cycle, heat is transferred from the inside of the cold storage to t ...

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Reference for common faults in the operation and maintenance of refrigeration units

2026-06-07 Knowledge Base

This article mainly explains issues related to liquid return, liquid-carrying start-up, oil return, the influence of evaporation and gas return parameters, exhaust-related parameters and liquid slugging prevention, as well as precautions for addi ...

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Screw chiller unit maintenance and troubleshooting

2026-06-06 Knowledge Base

1. Maintenance and Upkeep Screw-type water-cooled chiller units typically have an operating time of approximately 3000 hours per year (based on my country's climate and geographical conditions). To ensure the long-term safe and reliable operatio ...

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Understanding the Functions of These 14 Key Components in Screw Chiller Operation and Maintenance

2026-06-04 Knowledge Base

Refrigeration systems are an indispensable part of modern life, widely used in air conditioners, refrigerators, and other equipment. The normal operation of a refrigeration system relies on four core components: the compressor, condenser, evapora ...

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Screw Chiller Unit Structure and Working Principle

2026-06-02 Knowledge Base

1. Overview of Water-Cooled Screw Chillers Water-cooled screw chillers are common refrigeration equipment in industrial and commercial air conditioning systems, primarily used in applications requiring large-scale cooling, such as central air co ...

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Shanghai Double Penguin Refrigeration Co., Ltd. is a premier assembly factory and turnkey solution provider based in Shanghai. With nearly three decades of engineering expertise, we specialize in designing, integrating, and assembling high-performance cooling systems.

Core Competencies:

High-efficiency Condensing Units (Air/Water-cooled)
Parallel Compressor Racks with Siemens smart200 PLC Integration
Industrial Blast Freezing Systems

As a single-source partner for overseas EPC contractors and cold chain integrators, we bridge the gap between premium components and reliable field performance. Every system is engineered for stability, factory-tested (FAT) before dispatch, and backed by our 12-month warranty. We don’t just supply equipment — we deliver turnkey cooling confidence.”

+86-13661768928

ian@doublepenguin.com

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