Fishbone Evaporator is an evaporator whose heat exchange tubes are bent in a fishbone pattern, increasing the contact area within the same volume and reducing air flow blockage compared with a straight-tube coil. As a result it achieves higher heat exchange performance in installation positions where space is limited.
Tan Long designs and builds fishbone evaporators to the requirements of each system at our plant in Duc Hoa 1 Industrial Park, Tay Ninh (formerly Long An), for cold stores, ice-making systems, food chilling and water chilling systems.
How a fishbone evaporator differs from a straight-tube evaporator
| Criteria | Fishbone Evaporator | Straight-tube evaporator |
|---|---|---|
| Heat exchange area | Higher within the same volume thanks to fishbone-bent tubes | Depends on the length of the coil |
| Air flow | Less blockage, air passes through more evenly | Prone to dead air zones in the middle of the coil |
| Installation space | Suits positions limited in size | Needs more installation length |
| Typical applications | Cold stores, ice-making systems, water chilling | Large cold stores, freezing chambers |
Outstanding features of fishbone condenser
The fishbone evaporator is designed and manufactured to deliver optimal cooling performance, with a special structure that increases the heat exchange area. It is widely used in industrial and commercial refrigeration systems, including ice making, food chilling, air conditioning and water chilling systems. Tan Long products are built with heat exchange tubes bent in a fishbone pattern, which reduces air blockage and improves cooling effectiveness. The whole production process is strictly quality controlled to ensure durability, safety and high efficiency in operation.

General information about fishbone condenser
With many years of experience in refrigeration, Tan Long supplies fishbone evaporators to international standards, meeting the demanding technical requirements of industrial refrigeration systems. Tan Long fishbone evaporators can be customised to each customer need, from small systems to large-scale industrial applications. Tan Long is committed to cooling solutions that are effective, energy efficient and durable over time, helping customers reduce operating cost and maintain steady performance throughout the product life.
Tan Long fishbone evaporators suit applications in food processing plants, cold stores, water chilling systems and industrial air conditioning equipment.

Frequently asked questions about fishbone evaporators
Why is it called a fishbone evaporator?
Because the heat exchange tubes are bent in a fishbone pattern instead of running straight and parallel. This arrangement increases the heat exchange area within the same volume and lets air pass through more evenly, reducing dead air zones.
Which systems use a fishbone evaporator?
Cold stores, ice-making systems, food chilling, air conditioning and water chilling systems. It is the type usually chosen when the installation position is limited in size but high refrigeration capacity is still required.
Can it be built to custom dimensions?
Yes. Tan Long builds fishbone evaporators to the dimensions and capacity of each system, from small scale to large industrial systems. This matters when replacing an old coil — building it to the existing installation dimensions means the location does not have to be modified.
Fishbone evaporator or a standard industrial evaporator?
Choose by installation space and temperature range. For large cold stores and freezing chambers, a standard industrial refrigeration is usually more suitable. For tight positions, or where more heat exchange area is needed within a limited volume, the fishbone coil has the advantage.
What maintenance does a fishbone evaporator need?
Cleaning the heat exchange surface, checking the defrost system and calibrating the temperature sensors. A coil with heavy frost or dirt loses heat exchange performance and makes the store slow to pull down — this falls under scheduled maintenance package every month.
Which refrigerants can the coil run on?
It is built to the refrigeration system of the plant — it can run on NH3 or Freon. The tube and fin materials are selected according to the refrigerant, because NH3 is not compatible with copper.
Request advice and a quotation
Tan Long designs and builds industrial refrigeration equipment at its plant in Duc Hoa 1 Industrial Park, Tay Ninh (formerly Long An), so capacity and dimensions can be adjusted to the actual site. Call 0933 357 058 (Mr. Thinh) or send a quotation request with your output per shift and your main product type.
Which industries use fishbone evaporators?
Below are the industry groups in which Tan Long has installed the most fishbone evaporators:
- Seafood processing: fish fillets, shrimp, squid and frozen export products.
- Food and meat processing: carcass meat, cut meat and ready-prepared foods.
Each sector has different requirements for temperature range, contact materials and capacity. Please contact Tan Long's engineering team for advice on the right configuration for your products.
The fishbone evaporator consulting and supply process at Tan Long
Tan Long controls both design and manufacture at its plant in Duc Hoa 1 Industrial Park, Tay Ninh (formerly Long An), so the investor deals with a single point of contact from survey to handover:
- Survey and requirement definition: engineers work directly at the plant to establish capacity, layout, refrigerant and real operating conditions.
- Technical proposal: calculating a suitable configuration and discussing it with the investor's technical team before it is fixed.
- Detailed design: drawings are prepared and materials and equipment selected to match the refrigerant and the operating temperature range.
- Manufacture and works testing: machining, assembly and a test run before the unit leaves the factory.
- Installation and acceptance: connection into the plant's system, load testing and handover with the technical documentation.
- Warranty and operating support: operating instructions for the plant's technical team and fault support during the warranty period.
Why choose Tan Long to supply your fishbone evaporator?
Tan Long is a refrigeration engineering joint stock company with more than 20 years in industrial refrigeration, serving seafood and food processing plants and large-scale cold stores across Vietnam.
- In-house manufacturing: its own factory in Duc Hoa 1 Industrial Park, Tay Ninh (formerly Long An), with no dependence on outside subcontractors.
- Turnkey D&B capability: design and construction under one roof, reducing the risk of a gap between the drawings and what is actually installed.
- Complete documentation: equipment is handed over with technical files and CO/CQ certificates of origin.
- Engineers with field experience: advice based on each plant's actual system configuration rather than selling from a catalogue.
- Support after handover: the technical team is on hand for operation and maintenance throughout the equipment's life.
For advice on a specific configuration, please contact Tan Long's engineering team or see the projects already delivered.
Related technical reading
- Evaporators: construction, types and correct maintenance
- Cold store condensers: construction, types and how to choose
- Horizontal Shell and Tube Condensers: Classification and Advantages and Disadvantages
- What is a condenser? Structure and operating principle
- What is a cassette evaporator? Construction, principle and how to choose




































