Glen Refrigeration designs and manufactures Air Cooler Evaporator matched with refrigeration condensing unit for cold room and freezer room.
The slim type low profile evaporator coil from Glen Refrigeration offers a cooling capacity from 1.4 kW to 7.2 kW for 2~8 ℃ positive temperature cold room and cooling capacity from 1.1 kW to 5.7 kW for -18℃ negative temperature cold room. The slim type low velocity evaporator coil features low height and compact structure, is ideal for small walk in cooler for catering, retail, and gas stations.
The dual discharge evaporator, is also called ceiling flat air cooler. Designed in a low-profile, with the structure of air inlet at bottom and air outlet on both sides, allows for optimal utilization of space. The double-sided air circulation provides a more even distribution of cooling air, cools the room efficiently and evenly, mainly used in processing rooms with operators inside and the operators are not suitable for direct air flow.
The cubic air cooling evaporator includes DD series and DJ series. DD series unit coolers with evaporator fin spacing 6.5mm~7mm designed for 2~8 ℃ cold storage room and -18°C freezer cold room. It delivers reliable cooling at temperatures above and below zero degrees. DJ series low temperature evaporator with evaporator fins spacing 9mm designed for -25 ℃ quick frozen room. The air cooled evaporator offers a high efficient cooling solution, perfect for small, medium and large cold rooms and freezer rooms.
The angled ceiling air coolers with low height and compact size, are suitable for small cold rooms with low ceiling heights. The air cooler ceiling fan, installed on an angled surface, adopts air-blow design, makes the cold air distribute evenly and guarantees the freshness and quality of the vegetables and flowers.
The dual discharge evaporator is designed with ultra-thin structure, features low height. They are mainly used in food processing cold rooms. The compact and efficient design of the low profile evaporator coil allows for optimal space utilization in the cold room or freezer room, without compromising on cooling performance.
The cubic air cooler evaporators are ideal for different kinds of cold rooms and freezer rooms. Its high performance evaporator coils are built in 3/8 ” inner groove copper tube and corrugated aluminum fins with gaps of 6.5~7mm and 9mm. DD series unit cooler evaporator with fin pitch 6.5~7mm is designed for 2~8 ℃ cold storage room and -18°C freezer cold room. DJ series box evaporator is designed for -25 ℃ quick frozen room.
Here are some installation case from our customers. Only by truly understanding the needs of customers, we can offer the refrigeration systems and service that meet the demand of our customer’s and help our customers optimize their investments.
Firstly, the selection of the air cooler evaporator can be according to the demand of the cold storage room.
DD series box evaporator with evaporator fin pitch 6.5mm~7mm is suitable for 2~8°C temperature to store the fruit and vegetables and also suitable for freezer room to store the frozen meat, fish and other frozen food.
If it is a blast freezer room and requires -25°C temperature, we should choose the DJ series unit with evaporator fins pitch 9mm~10mm.
If you want a low profile evaporator to save more space, the slim type ceiling air cooler and dual discharge evaporator can meet your requirements.
Secondly, the selection of the air cooler evaporator cooling capacity should be according to the cold storage room size and the cooling capacity of condensing unit.
If you still don’t know how to select the right air cooling evaporator for your cold storage, feel free to contact with us. We will provide professional service to meet your requirements. Email: info@greehvacr.com Whatsapp: 0086-15057108995
The air cooler evaporator and outdoor condensing unit composed the cold room refrigeration system. The match of the air cooler evaporator and the outdoor condensing unit plays an important role in cold room.
If the cooling capacity of the condensing unit is larger than that of the evaporator unit, it will have problems:
The heat exchange area of the evaporator unit is not enough, the refrigerant in the evaporator coil can’t be fully evaporated, resulting in the refrigerant failing to absorb enough heat before returning to the compressor, thus affecting the refrigeration effect.
When the condensing unit (or the compressor) cooling capacity is larger than the evaporator, the excess refrigerant will fill the evaporator with liquid refrigerant, resulting in liquid hammer, and the liquid refrigerant will damage the compressor.
Please contact us for the “Match table of outdoor condensing unit and evaporator for the cold storage room”. It is very helpful for you to choose the right unit according to this match table.
The quality of the expansion valve in the refrigeration system will directly affect the operation life of the entire system. Glen Refrigeration offers cold room evaporator pre-installed Danfoss thermostatic expansion valve to ensure the quality. The selection of a suitable Danfoss thermal expansion valve affect the cooling performance and refrigeration effect.
When the thermal expansion valve does not match the refrigeration system, it will affect the refrigerant flow of the system, resulting in the affection of the cooling performance.
When the Danfoss thermal expansion valve is too small, the supply of the refrigerant in the evaporator will be insufficiently, generating a large super-heat, which will have an adverse effect on the system performance.
When the the Danfoss thermal expansion valve is too large, the refrigerant in the evaporator will be oversupplied, resulting in the liquid refrigerant entering the compressor, causing liquid hammer. So Glen refrigeration offers the “Expansion valve selection table” for our evaporator unit for cold room.
Please contact us for: Danfoss Expansion Valve Selection Table for Glen Refrigeration Evaporator
The installation of the thermal expansion valve is very important. The following are installation precautions:
The thermal expansion valve should be installed as close to the evaporator inlet as possible.
When installing, the expansion valve body should be placed vertically and cannot be tilted or upside down. Usually, the valve body is installed at the outlet of the dry filter.
The Danfoss EXV temperature sensor bulb should be installed as close to the horizontal suction pipe at the evaporator outlet as possible and away from the compressor suction port. Vertical installation is not allowed.
It is necessary to ensure that the temperature sensing bulb is close to the suction pipe and wrapped with insulation cotton.
Different diameter of the suction pipe, the installation angle of the txv sensing bulb is different. When the diameter of the return pipe is less than 25mm, the txv sensing bulb can be tied to the top of the return pipe.
For more details about how to install the Danfoss Expansion Valve Please click here “Thermal Expansion Valve Installation” .
The casing of slim type air cooler evaporator and dual discharge evaporator are made of aluminum magnesium alloy sheet metal with powder coating. The alloy of aluminium and magnesium has the advantages:
The box evaporator comes standard with high-quality galvanized sheet metal with powder coating. It has the features:
Glen Refrigeration provides 304 stainless steel sheet casing for cold storage evaporator.
When walk-in cooler condensing unit and evaporator work, the evaporator coil surface will frost. If don’t defrost in time, the frost layer will affect the heat exchange of the evaporator coil and reduce the refrigeration efficiency. The frost layer will also increase the wind resistance of the cold room fan motor and reduce the air volume of the air cooler evaporator. So it is important and necessary to defrost regularly. The high reliability of the evaporator defrost heaters is very important to prevent the walk in cooler evaporator freezing up.
When the evaporator defrost heater works the frost is melt and the water flows into the water pan of the walk in cooler evaporators. Because the temperature of the freezer room is very low, the water will freeze quickly. The purpose of evaporator pan heater is to melt the ice of water pan. The evaporator drain pan heater works together with the evaporator coil heater, ensures the normal operation of the cold room evaporator.
The evaporator fins purpose is to increase the heat exchange area of the condenser coil or evaporator coil and improve the heat exchange efficiency. According to different functions, it has pure aluminum foil and coated aluminum foil. The coated aluminum foil used in air conditioning and refrigeration industry mainly includes blue aluminum foil and golden aluminum foil.
The Danfoss expansion valve can be pre-installed in the air cooler evaporator. Glen Refrigeration offers unit coolers with Danfoss expansion valve to make out customers to use more conveniently. The main functions of Danfoss expansion valves are as follows:
Want to discuss a project? Get a technical issue? Need a quote or more information. Let’s discuss how Glen Refrigeration can help you with complete commercial refrigeration system solutions!
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