2018年8月26日星期日

Hinged door for cold room

Cold Room Hinged Door designed and manufactured by OnlyKem is widely used for cold rooms or freezer rooms from temperatures of -36° C to normal operating temperatures. Cold room hinged door panels are seamlessly joined together by means of tongue and groove, they are locked together by cam-lock on each side of the panel to ensure air tight joints. Cam-lock design fastener to install with the cold room tightly and strongly. The cold room door panel with thickness of 100mm or 150mm is commonly applied. All our cold room doors are made with the CFC-free insulated PU panel covered with stainless steel or galvanized steel that meet EC/USDA international hygiene standards, they are are available in customized sizes and structure. The outstanding insulation and sealing properties of the PU Panel door makes a contribution to the energy-saving operational of cold rooms and freezer rooms. It has the characteristics of perfect sealing, reliable, safe and easy to operate manual or automatically.





Features of Cold Room Hinged Door



Excellent thermal insulation.
Outstanding sealing.
Reliable structure.
High quality hardware parts.
Customized door sizes.
Adaptive design for varying installation scenarios.
Easy to operate manual or automatically.
Fire resistance
Safe Escape device. when locked inside the cold room, push the escape device ,then you can come out.

Applications of Cold Room Hinged Door

Hinged doors are widely applied to the walk in cold room, freezer room, blast freezer room with wide range of room temperature. They are also used for clean room, green house, planting room etc. Followed are some typical applications for cold room and freezer room.











2018年8月9日星期四

The important role of PU panel in refrigeration industry

PU panel is also called PU sandwich panel, PUR Panel or PUF Panel in which polyurethane foam is been sandwiched between the two outer covers. The CFC-free insulated PU panel is commonly used as the cold storage panels due to its advantageous mechanical, chemical, biological and moisture properties, it is excellent to prevent thermal conductivity, restrain growth of fungi, keep out moisture ingress. We are engaged in manufacturing reliable PU sandwich panels in variegated specifications.

OnlyKem PU panels are available in customized sizes and structure for storage temperature ranges from -36°C to 10°C. The outer two layers are available in profile with zinc coated, galvanized steel, embossed aluminum and stainless steel etc., that can meet the international hygiene standards.







The sizes of OnlyKem PU Panel is customized by your cold room requirements, the maximum length is up to 12,000mm, the available width is 960mm or 1000mm, the available thickness is with industrial standard of 50mm, 75mm, 100mm, 120mm, 150mm and 200mm. PU panel is suitable for low and high temperature controlled applications like cold room and freezer room, it has the characteristics of good thermal insulation, low cold air leakage, easy to transport and install, lower running cost and higher fire resistance property. B1 and B2 grade PU panels are available for cold room. All the PU panels are connected by the easily operated built-in cam-lock.

In recent years, we keep on investing more than 1,000,000 dollars to update the automatic manufacturing production lines and bsic product facilities. Our daily PU panel output is about 3000 square meters. Our high quality PU panels have flat and elegant appearance. The foaming time of each panel is 30 to 40 minutes, so the density uniform and the size stable.



Specifications of PU Panel







Features of PU Panel


Lightweight and modularized.
High mechanical durability.
Less construction cost.
Perfect isolation attributes.
Good thermal preservation.
Water proof, sound proof.
Energy saving and fire resisting.
Competitive in price.
The coated layers are available in profile with zinc coated, galvanized steel, embossed aluminum and stainless steel etc.
The EC/USDA international hygiene standards.





Installation Instruction


As the important component of the cold room, OnlyKem Brand PU Panels are designed and manufactured with detailed consideration for installation and maintenance. Followed are some instructions:
Before the installation, make sure that the locking devices are at the stop position. To do so, turn the locking devices counter-clockwise, using a wrench with force, until it stops.

2.Push panels together and turn wrench 1/4 turn clockwise. This will engage the male locking device ‘arm’ over female locking device ‘pin’.

3. Keep turning the wrench for another turn until the wrench stops. If there are any problems during the operation of cam locks, turn the wrench counter-clockwise with force until it stops moving any further. This will put the locking device at its original position and you can try to assemble the panel again by moving the wrench in a clockwise direction.

Any questions, please send email to us at info@coldroomplus.com.


Products and Manufacturing Process


OnlyKem Brand Pu Panel factory is equipped with automatic production lines. We had 12 years of experiences of manufacturing PU Panels with daily output up to 3,000 square meters. We have competitive advantages in supply chain management, optimized manufacturing process and quality control which power us to keep high product quality, shorter delivery time and competitive cost to meet the demands of our worldwide customers. Most products had been kept up with the international forefront counterparts. Some of them have enjoyed leading position. Our PU panel products are sold in more than 50 countries around the world.

Seafood Cold Storage Warehouse

Seafood cold storage warehouse is more and more popular in Philippines nowadays ,the surrounding environment around the sea created the advantage of its fishery. Philippines is our traditional market, up to now we have built more than 10 sets large projects and our customers cover fishery,coffee ,poultry business and etc. The first set has been installed in 2010, and it is running smoothly at present. For one complete production line for seafood cold storage warehouse should include working area, loading bay , freezer room, blast freezer,prepare room,ante room and etc. For one smooth flow, receiving the fresh seafood in loading bay,then put into prepare room or working room to put down the temperature ,then put in blast freezer for quick freeze ,finally ,put it into freezer room for a long time storage .




Characteristics of Seafood cold storage warehouse :
Working area :
For seafood treatment,it will release of acid and other corrosive substances, should have high request for inside PU panels and evaporator . In this situation, we use stainless steel for inside pu panels and the cover for evaporator ; for fins of evaporator, use hydrophilic aluminum foil (blue color) which has anti-corrosion effect .
Another point is there has people working inside, in order to protect people from strong wind blowing directly , the evaporator air flow must be softly blow out ,so we will use dual throw model (SDL series)evaporator for working area . SDL series are used in food process workshop ,the temperature is above +2℃.



Blast freezer for seafood cold storage warehouse:
In order to keep the good taste and keep in a long time storage , fresh seafood before put into the freezer storage should be quick freezed in blast freezer first,after 5-8 hours ,the core temperature can become -18 ℃,then put it into keeping freezer for a long time storage ;
Normally , blast freezer dimensions will be small size , we will use land type evaporator . This design will save some space and make the air flow more balance .



Keeping freezer for seafood cold storage warehouse :
After quick freeze in blast freezer ,it will be stored in keep freezer (-20℃)for a long time .
New design with our engineer, Europe style color with strong tunnel fans,large air flow.
Anti-corrosion fins with blue color .
41mm wall thickness for coppoer pipes .






Rack unit :
Known that poor water quality in Philippines,evaporative condenser is not very suitable for this environment using , so we use the air cooled model ;multiple units can use a siphon device to simplify the system design.
Thermosiphon refrigeration cycle (also known as heat circulation refrigeration cycle) used in screw compression refrigeration system. is most suitable for the system with poor water quality. Its characteristics are: small size and reliable oil cooling. The oil temperature after cooling is generally in 10 ℃to 20 ℃ higher than the condensing temperature. Compared with water cooling, no cooling water is needed and water system is simplified; there is no problem of heat exchanger tube scaling to affect the heat transfer of oil cooler, and the cooling efficiency can be improved; there is no influence on the exhaust volume and power consumption of the compressor.
To sum up, thermosiphon refrigeration cycle is a developed energy-saving refrigeration system for cooling refrigerating oil recently. At present, many foreign countries have adopted it.
PLC system ,easy to debugger and maintain .




For loading bay :
Mainly need to receive and delivery the seafood, use roll up door that connect with shipping truck or container .
For one complete roll up door, includes door body , lifting platform and edge package.
Usually keep it in +8℃room temperature .
Door size and lifting platform should depend on the truck or container size to design.
For basic cement platform building , it should depend on the height of shipping truck .



For back up parts :
For large seafood cold storage warehouse project, there are consumables need to back up, it includes compressor, fan motor for evaporator , fan motor for condenser, heater,PLC system and etc ;

The meaning of OnlyKem in Chinese is grateful,promise and success, OnlyKem don’t want to only be a successful businessman, we would like to be skilled craftsman .As we think as long as taking customer needs as a primary task,have a heart of gratitude and sincerity, the result won’t be bad . The idea of making a perfect machine is always fascinating for us .Our stable quality ,competitive price and immediate service help us possess more and more customers . In the future, we believe that you can see more and more OnlyKem seafood cold storage warehouse will be building in Philippines and also other countries !

2018年8月1日星期三

Unit Cooler

Unit Cooler (also called air cooled evaporator) is commonly used for optimal distribution of cooled air in refrigerated cold rooms or freezer rooms, it is one of the important component of in the cold storage system. OnlyKem unit coolers are designed and manufactured for larger walk in cold room or freezer room, they may also be utilized in warehouse and other cold storage applications in the commercial and industrial refrigeration markets.

Our unit coolers are constructed of a heavy-gauge, smooth finished aluminum cabinet or galvanized steel with a copper coils, aluminum plate fin foils and permanently lubricated ball bearing fan motors with inherent thermal protection. These draw-through units are designed for ceiling mounting in cold room and are available in air defrosting, electric defrosting and hot gas defrosting configuration, the heat exchange with internal cold storage room can be achieved through inner low temperature refrigerant. OnlyKem had designed 6 series, more than 100 standard models air coolers to satisfy your demands with 15 years of experiences. ODM and OEM are also available .



Specifications of Unit Cooler



Unit Cooler Features


High quality G90 galvanized steel cabinet provides a heavy duty, durable structure
Hinged design make sure convenient maintenance.
High capacity 5/8″ diameter copper tube evaporator coils
High temperature applications feature 6 FPI coils for increased heat transfer. Medium temperature applications feature 4 FPI , low temperature applications feature 3 FPI evaporator coils increasing protection against air restriction due to ice formation
High efficient and totally enclosed fan motors with long reliable operation
Axial fan, permanently lubricated ball bearing fan motor, low noise, long work life.
Available in air, electric and hot gas defrost configurations
Electric defrost heaters are inserted into coil slab to provide efficient electric defrost. Heater elements are stainless steel sheathed and are self-centering, overloading thermal protection.
Both International and Chinese brand fans available.


Some Typical Unit Coolers

Unit cooler is designed mainly according to the cold room capacity, the internal temperature of cold room and the refrigerating output of condensing unit. Followed are some typical OnlyKem unit coolers.

2018年7月22日星期日

Commercial Freezer Room

Commercial Freezer Room is very the efficient storage facility for frozen products such as frozen meat, frozen seafood, etc. Foods can be kept for a long time with the help of commercial freezer room, it is very helpful for fresh food business development. Some customers want to cool down the temperature of commercial freezer room quickly within a regular time. But it needs time, let me list some reasons for that.




1. PU sandwich panels of commercial freezer room don’t work well

Firstly the thickness of PU sandwich panel for the commercial freezer room is not thin enough, so the insulation effect is poor. Secondly the density of PU sandwich panel is not enough. If frost occurs in the seal of commercial freezer room door, it means that seal is not tight. In addition, frequent switching of commercial freezer room doors or more people come into and go out from the commercial freezer room will also increase the cooling consumption, so let’s try to avoid opening the door frequently. If large quantity products are loaded into the commercial freezer room, the thermal load increases sharply. The commercial freezer room needs to take a long time to cool down to the specified temperature.




2. The frost of the evaporator is serious, or dusty is excessive, the heat transfer effect will reduce.

Because the evaporator temperature of commercial freezer room is lower than 0℃, and the humidity of commercial freezer room is high, the moisture in the air is easily frosted on the surface of the evaporator, which affects the heat transfer effect . To prevent more thicker frost on the fin surface of evaporator, we need to set defrost time periodically.

3.There is much air or frozen oil in the evaporator, the heat transfer effect will reduce.

Once inner surface of the evaporator heat transfer tube is attached with much frozen oil, the heat transfer coefficient will be reduced. Similarly, if there is much air in the heat transfer tube, heat exchange area and heat transfer is reduced, so commercial freezer room temperature will cool down slowly. Therefore, in daily operation and maintenance, we should remove the oil and exhaust the air in the evaporator in time to improve the heat transfer efficiency of the evaporator.




4. The throttle valve is improperly adjusted or blocked, the refrigerant flowing rate is too large or too small.

If the opening degree of the throttle valve is too large, flowing rate of the refrigerant will be too large, the evaporation pressure and evaporation temperature will increase, so commercial freezer room temperature will cool down slowly; Meanwhile, if the throttle valve opening degree is too small or blocked, flowing rate of the refrigerant will be reduced, the cooling capacity will be reduced, so commercial freezer room temperature will cool down slowly. Generally, we could judge whether the flowing rate of the throttle valve refrigerant is appropriate by observing the evaporation pressure, the evaporation temperature, and the frosting condition of the suction pipe. Blockage of the throttle valve is an important factor affecting the flowing rate of the refrigerant. The main reasons for the blockage of the throttle valve are ice blockage and dirty blockage. Ice blockage is due to the poor drying effect of the dry filter, refrigerant contains moisture, when it flows through the throttle valve, it drops negative temperature, the moisture in the refrigerant becomes to be ice and blocks the throttle hole; Dirty blockage is due to the accumulation of more dirt on the filter inlet of the throttle valve, so the refrigerant flows poorly, it caused dirty blockage.

5. Refrigerant is not enough in the system, cooling capacity is poor.

There are two main reasons for the insufficient refrigerant circulation. Firstly, the refrigerant charge is not enough, in this case, we just fill in sufficient refrigerant in system. Secondly, the refrigerant leaks seriously in the system, in case of this situation, we need to find the leakage point and seal it soon.

6. Low efficiency of compressor, the cooling capacity can’t meet the commercial freezer room load requirements

Due to the long-term operation of the compressor, the components such as the cylinder liner and the piston ring are severely worn, the gap is increased, the sealing performance is reduced accordingly, the gas transmission coefficient of the compressor is also reduced, so the cooling capacity is reduced. When the cooling capacity is less than the heat load of cool room, temperature will cool down slowly. We could observe the suction and exhaust pressure of the compressor to judge refrigeration capacity of the compressor. If the refrigeration capacity of the compressor drops down, the common method is that replacing the cylinder liner and piston ring of the compressor, If it can’t be effective after replacement, we need to disassemble and repair it.





Onlykem is not only provide best quality cold room and refrigeration unit products and solutions but also installation and service for secure and reliable lifetime operation. Welcome contact us for detailed information and suggestions.

2018年7月16日星期一

OnlyKem CFC Free Cool Room Panels

Cool Room Panels are also called cold room panels in which polyurethane foam are been sandwiched between the two outer covers. OnlyKem CFC free cool room panels are commonly used for cold room construction due to its advantageous mechanical, chemical, biological and moisture properties, Our high quality coolroom panels are excellent to prevent thermal conductivity, restrain growth of fungi, keep out moisture ingress. Onlykem is the important cool room panels manufacturers in China.
OnlyKem CFC Free Cool Room Panels specifications
NOItemSpecifications
 1Density of panel 42kg/m³
 2 Thickness of PU panel 75mm,100mm, 120mm,150mm,180mm,200mm optional
 3 PU Panel Connection Cam-lock connection
 4Surface steel Color galvanized steel or stainless steel
 5 Thickness of color steel 0.426mm,0.45mm,0.5mm
 6 Color White(Optional)
 7Fire resistance grade  B1/B2
 8Foam time 30-40minutes
9 Insulation material polyurethane(CFC free)

Cool Room Panels Production Process

The main cool room panels production process includes 6 steps.

Step 1, put the bottom steel plate, the support, the cam-lock in sequence.

Step 2, put the top steel plate and fix them together.

Step 3, put the insulation (polyurethane) material into this outer casing and then waiting the material to be frozen.

Step 4, PU panel polishing.

Step 5, Film protection and customized package.

Step 6, Uploading and transporting.

All our cold room panels production process are finished in the production line.








Cool Room Panels Production Fatures
Lightweight and modularized.
High mechanical durability.
Less construction cost.
Perfect isolation attributes.
Good thermal preservation.
Water proof, sound proof.
Energy saving and fire resisting.
Competitive in price.
The coated layers are available in profile with zinc coated, galvanized steel, embossed aluminum and stainless steel etc.
The EC/USDA international hygiene standards.

OnlyKem Pu Panel factory is equipped with automatic production lines. We had 12 years of experiences of manufacturing PU Panels with daily output up to 3,000 square meters. Welcome to visit our factory.
About OnlyKem

OnlyKem Technology Co., Ltd is one of the leading cold room and freezer room designer and manufacturer in China, who has more than 10 years industrial experience. We had provided many types of effective and states of the cold room and key parts to over 36 countries. We are not only manufacturing best quality cold room products but also providing professional cold room and key parts design and installation service. OEM, ODM, custom design and fabrication are also available.

If you have any questions or inquiries, please contact us at sale@coldroomplus.com we will reply as soon as possible

2018年7月11日星期三

Mini Cold Room

Mini Cold Room generally adopts the eccentric hook connection or the field foaming fixation of the embedded parts inside the plate wall. Our mini cold room has characteristics of good sealing, easy loading and removal, small amount of construction and installation, labor saving, good quality and quick effect. Mini cold room is equipped with advanced refrigeration units that can match the cold storage capacity. Our mini cold room features fast cooling speed, energy saving, automatic controlling system, safe and reliable operation. Mini cold room is suitable for a wide range of cold storage temperature range of -40 ℃ to 20 ℃ which can meet the needs of different uses. It is suitable for use in various industries and departments.



Characteristics of Mini Cold Room
The operation is simple, the volume is small, also it can move flexibly, convenient, etc.
The price is low and the operating cost is much lower than that of other refrigeratory stores.
A composite library board with the most advanced insulation material, polyurethane, as the core material for the small cold storage. Professional technology and excellent material selection to ensure that the system is more reliable. Inside and outside the cold room, we can select rigid polyurethane insulation sandwich panel with color steel plate, stainless steel plate, embossed aluminum plate and so on. T-plate, wall board, corner panel combined cold room can be assembled in any space, also can be made into a variety of lengths, specifications, to meet the different requirements of the majority of users. The door lock is equipped with a safe unlocking device, which can be opened even after the door lock, which effectively ensures the safety of the operator.
The main parts of Mini cold room are international famous brands, which ensure the reasonable collocation, smooth operation, good insulation performance, low energy consumption and excellent quality.
The size of Mini cold room, the storage temperature, the location of the unit, the opening of the door, the layout of the store, etc., all these can be customized according to the specific requirements of the user.
Advantages of Mini Cold Room

Because of its flexibility, short construction period, superior energy-saving effect, Mini cold room is more and more popular with users. It is the best choice to replace civil cold storage. The storage plate is filled with drawbars, which has good air tightness and heat insulation. Room body integration, with a good degree of steel, is the most advanced large-scale ultra-low-temperature storage.

The use of cold storage for a long time has a lot to do with daily maintenance, what are the methods of cold room maintenance? It is necessary to know some of this knowledge!

PU panel
PU panel is B2 fireproofing grade, B2 is best grade for keeping best insulation effect and safety.
Cam lock, very easy to install.
40-42 kg/m3 high density PU foam, It will influence the cold room life time. It can keep cold room lifetime to 20 years at least.

4.PU panels thickness: 100mm, 120mm, 150mm, 200mm. Width are 960mm or 1000mm(standard). Outer layer are color steel, stainless steel plate, thickness are 0.426mm, 0.5mm, 0.6mm or thicker .




Hinged Door
Mini cold room door size can be customized.
Window on the door, glass door and PU panels door.
Eescape device system protects people safety.
Hinges and locks are stainless steel.

Condensing Units Brand

Bitzer, Copeland, Danfoss, etc. Quality is absolutely guaranteed.







Selection of Compressor and Evaporator for Mini Cold Room

The capacity of mini cold storage is generally less than 5 tons, the refrigerant is mostly R404a. The low-temperature storage is semi-closed compressor, and the high-temperature storage is mostly closed compressor. Cold storage evaporator can be used by pipe or cold-air machine.
Mini cold room price/cost analysis

Mini cold room is a long-term customer-made cold storage style, the prices are also of particular concern. In fact, there is no accurate price, the so-called mini cold room prices are businesses accounting costs according to customer configuration requirements.

For example, if you want to build a mini freezer with an area of 2*2*2m to storage seafood and meat , voltage is 380, PU panel thinckness is 120mm, 2HP compressor, generally the price is less than $3000.

Like a fruit and vegetables storage for 2 meters long, 2 meters wide, 2 meters high Mnini cold room, the price is around $2000.

Customers are best to choose a reasonable price and good after-sales cooperation, because we do mini cold room not only to save costs, more importantly, can also enjoy good after-sales service.

OnlyKem Technology Co., Ltd.

OnlyKem Technology Co., Ltd. is the pioneer and leader of the refrigeration industry. Production and export of cold room and refrigeration equipment for more than 20 years. Our innovative, high quality products and solutions include Mini Cold Room, Walk In Cooler, Walk In Cooler Panel, Unit Cooler, Condensing Unit, etc. Product innovation and customer satisfaction are our long term commitment to all our partners.

So why not choose us? We are satisfied with all your expectations. Welcome to consult! please contact us at sale@coldroomplus.com, we will reply as soon as possible.