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70トン工業用水冷防爆スクリューチラー
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70トン工業用水冷防爆スクリューチラー

Tongwei は、中国でトップランクの産業用パッケージチラーユニットの専門メーカーおよびサプライヤーであり、産業プロセス冷却のニーズに応える 15 年以上の経験があります。当社の産業用パッケージチラーの堅牢な製品ラインは、冷却能力 2 KW ~ 200KW の独自のアプリケーション仕様を満たすように設計されています。当社は、99% の稼働率と +/- 1℃ の厳密な温度制御を備えた産業用プロセス冷却の信頼できる供給源です。当社の 70 トン工業用水冷防爆スクリューチラーには 12 か月の保証が付いており、お客様のシステムが確実にプロセスを強力に実行できるよう、優れたアフターセールス技術サポートを提供しています。長期にわたるカスタム防爆スクリューチラーのサプライヤーになることを楽しみにしています。中国で。

チラー型式:TW-255WSH
冷却能力: 255KW(219300kcal/h)
冷媒:R22/R407c/R134A
電源: 380V/50HZ /3PH (標準) / 208-480V/60HZ/3PH(カスタマイズ)
コンプレッサーブランド: Hanbell/Bitzer スクリューコンプレッサー
蒸発器のタイプ: シェルアンドチューブ
コンデンサーのタイプ: シェルアンドチューブ

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製品説明


70 Ton Industrial Water Cooled Explosion-Proof Screw Chiller

Explosion-proof chiller is a specially designed cooling device that is used in explosive and hazardous processing applications to produce a cooling effect with compact protection system. Our custom explosion-proof chillers are engineered and built to meet specific regulations and NEC classifications. All explosion-proof chillers are customized to your order and can meet Class 1 Division 1 and Class 1Division 2 requirements. We offer chiller options in a variety of capacities to suit your facility's needs.Tongwei manufactures different types of explosion-proof chillers:air-condensing explosion-proof chiller and water-condensing explosion-proof chiller, both of them have a reinforced design to protect its components from ambient flammable materials that could cause an explosion. 70 Ton Industrial Water Cooled Explosion Proof Screw Chiller model TW-255WSH is with the cooling capacity is about 250KW ,it uses shell and tube evaporator and condenser,which includes one 80HP SCREW compressors using R407C refrigerant. The refrigerant is a non-depleting ozone gas and is considered environmentally friendly .Water cooled explosion proof screw chiller is with water-cooled shell and tube condenser , it need connect with cooling tower for heat dissipate and it need also connect buffer tank .


Our custom explosion proof chillers feature high-quality components and cutting-edge technology that adheres to industry standards. For the custom chillers offered by Tongwei, our clients can choose from many specifications and sizes. Furthermore, being one of the top industrial chiller manufacturers and suppliers, Tongwei can help find the right chiller solution for your application. We provide long-lasting chillers that are customized based on your needs. Contact us today to get started with a suitable chiller system.

Water Cooled Explosion Proof Screw Chiller


Explosion-proof Chiller Technical Specification

TW-WSH series water cooled explosion-proof screw chiller techinical parameters(one compressor)
                                          Model                           Item TW-100WSH TW-135WSH TW-175WSH TW-190WSH TW-230WSH TW-255WSH TW-300WSH TW-350WSH TW-375WSH TW-415WSH
Cooling capacity kcal/h 86000 116100 150500 163400 197800 219300 258000 301000 322500 356900
KW 100 135 175 190 230 255 300 350 375 415
Input power KW 22 30 37 42 51 56 65 75 80 90
Max Current A 40 53 67 73 89 97 109 126 137 153
power source 3PH~380V~50HZ(3PH~200V/220V/415V~50HZ/60HZ)
Refrigerant Type  R22(R134a/R407c/R404A)
Charge kg 17 22 27 33 38 43 50 55 60 66
Control Thermostatic expansion valve
Compressor Type  Semi-hermetic screw
Power KW 22 30 37 42 51 56 65 75 80 90
Start mode Y-△
Capacity control % 0-33-66-100 0-25-50-75-100
Evaporator Type Shell and tube 
Chilled water m3/h 17.2 23.2 30 32.7 40 43.9 51.6 60.2 64.5 71.4
Water pressure KPa 35 35 35 38 40 42 42 45 45 43
Pipe connection Inch 3" 3" 3" 3" 4" 4" 4" 4" 4" 4"
Condenser Type Shell and tube
Cooling water m3/h 21 28.4 36.6 40 48.3 53.5 62.8 73 78.2 86.8
Water pressure KPa 42 42 42 43 42 43 43 45 45 45
Pipe connection Inch 3" 3" 3" 4" 4" 4" 4" 4" 5" 5"
Safety devices  Compressor overheating protection,overcurrent protection,high and low pressure protection,overtemperature protection,traffic protection,phase sequence/phase loss protection,low level protection,anti-freezing protection.
Dimension Length mm 2150 2350 2450 2600 2750 2800 2800 2900 2900 3000
Width mm 560 620 650 680 780 950 950 950 950 1200
Height mm 1550 1650 1650 1650 1650 1800 1950 1950 1950 1580
Net weight kg 650 900 1050 1200 1550 1800 1900 2050 2050 2350
Running weight kg 820 1050 1200 1400 1800 2100 2200 2350 2380 2530
Notes:
1.Rated cooling capacity is based on: the chilled water inlet and outlet temperature 12℃/ 7℃; cooling water inlet and outlet temperature 30℃/35℃.
2.Chilled water temperature range: 5℃to 30℃; chilled water inlet and out let temperature difference: 3℃to 8℃; cooling water temperature range: 18℃to 30℃;
   Cooling water temperature range: 18℃to 30℃; cooling water inlet and outlet temperature difference: 3.5℃to 10℃. 


TW-WDH series water cooled explosion proof screw chiller techinical parameters   (Double compressors)
                                                Model                              Item TW-200WDH TW-270WDH TW-350WDH TW-380WDH TW-460WDH TW-510WDH TW-600WDH TW-700WDH TW-750WDH TW-830WDH
Cooling capacity kcal/h 172000 232200 301000 326800 395600 438600 516000 602000 645000 713800
KW 200 270 350 380 460 510 600 700 750 830
Input power KW 44 60 74 84 102 112 130 150 160 180
Max Current A 40 53 67 73 89 97 109 126 137 153
power source 3PH-380V-50HZ(3PH~200V/220V/415V~50HZ/60HZ)
Refrigerant Type  R22(R134a/R407c/R404A)
Charge kg 17×2 22×2 27×2 33×2 38×2 43×2 50×2 55×2 60×2 66×2
Control Thermostatic expansion valve
Compressor Type  Semi-hermetic screw
Power KW 22×2 30×2 37×2 42×2 51×2 56×2 65×2 75×2 80×2 90×2
Start mode Y-△
Capacity control % 0-33-66-100 0-25-50-75-100
Evaporator Type Shell and tube 
Chilled water m3/h 34 46 60 65 79 88 103 120 120 143
Water pressure KPa 35 35 35 38 40 42 42 45 45 43
Pipe connection Inch 4" 4" 4" 5" 5" 6" 6" 6" 8" 8"
Condenser Type Shell and tube
Cooling water m3/h 42 57 73 80 97 107 126 146 156 174
Water pressure KPa 42 42 42 43 42 43 43 45 45 45
Pipe connection Inch 4" 4" 4" 5" 6" 4"×2 4"×2 4"×2 5"×2 5"×2
Safety devices  Compressor overheating protection,overcurrent protection,high and low pressure protection,overtemperature protection,traffic protection,phase sequence/phase loss protection,low level protection,anti-freezing protection.
Dimension Length mm 2750 2800 2800 2950 2950 3150 3480 3480 3480 3650
Width mm 750 780 780 810 810 850 875 875 895 1120
Height mm 1650 1650 1650 1650 1750 1750 1850 1850 1850 1950
Net weight kg 1650 1800 1850 2200 2450 2650 2800 2800 3450 3750
Running weight kg 1950 2180 2240 2660 2960 3200 3380 3580 4160 4360
Notes:
1.Rated cooling capacity is based on: the chilled water inlet and outlet temperature 12℃/ 7℃; cooling water inlet and outlet temperature 30℃/35℃.
2.Chilled water temperature range: 5℃to 30℃; chilled water inlet and out let temperature difference: 3℃to 8℃; cooling water temperature range: 18℃to 30℃;
Cooling water temperature range: 18℃to 30℃; cooling water inlet and outlet temperature difference: 3.5℃to 10℃. 


Why Explosion-Proof Chillers Are So Important

In order to protect the safety of employees and facilities, reducing the likelihood of explosions becomes the primary goal of any business owner. Some work-sites are more dangerous than others. Reduce the risk that sparks from the chiller could ignite explosive or flammable materials, which is why explosion-proof chiller is a safety requirement in many industries. Although the price of all explosion-proof equipment is high, the cost is far less than the loss of life caused by industrial accidents due to the use of the wrong machinery.


In addition to safety concerns, explosion-proof chillers are required by law in many locations where with combustible materials in the air. In addition to the danger of igniting flammable substances, non-compliance could result in huge emissions.


How Does an Explosion-Proof Chiller Work?

There are many types of explosion-proof chillers, and how each one works depends on the components used. For example, there are screw and scroll compressors, air-cooled and water-cooled condensers. The components of the chiller system are not explosion-proof. The design of the entire system. But these components determine the ultimate efficiency of the chiller and the temperatures it can reach. Use this information when choosing a chiller for your workplace.


Most chillers operate in the same way, in short, by continuously flowing refrigerant to the cold end of the evaporator at the desired temperature. The chiller then pumps the cooled fluid through the process to dissipate heat from the equipment and funnel it back to the return side. The range of chiller we choose is -60 F to 30 F. If you have any special requirements for the cooling of chiller, please contact us .


The refrigerant starts the process in a mixture of liquid and gas. The gas and liquid enter the evaporator, where the heat converts the refrigerant into a low-pressure gas. This gas enters a compressor, which compresses the gas to a high pressure state using one of several methods. This gas moves to the condenser, which can cool the refrigerant with water or air. In a condenser, the coolant releases heat and condenses into a liquid. When the liquid is at high pressure as it passes through the expansion valve, the expansion valve controls how much cooled refrigerant enters the evaporator and starts the cycle again.

Air-Cooled Explosion Proof Chiller Installation


Types of Explosion-Proof Chillers

We offer explosion proof chillers from 1/2 ton to 200 tons to cool all sizes in your application. Learn more about our explosion proof chiller.


Scroll Explosion Proof Chiller

Our single-, dual-, and multi-circuit scroll explosion proof chillers are available with scroll compressor, an industry-leading and long-lasting solution.

▪ Air- and Water-cooled Scroll

▪ 1 - 60 hp (1KW- 200KW)

▪ Single-, dual-, or multi-circuit(Three or Four )

▪ Panasonic or Danfoss scroll Compressor

           

25HP Air-Cooled Scroll Explosion Proof Chiller     


30HP Water-Cooled Scroll Explosion Proof Chiller       


Screw Explosion Proof Chiller

Our Single or Dual-circuit screw explosion proof chillers feature Hanbell or Bizter screw compressors for long-lasting performance and reliability.

▪ Air- and Water-cooled

▪ 60 - 300 hp (200KW-1500KW)

▪ Single or Dual-circuit

     

What Are The Main Components Of Explosion-proof Chiller

5.1 Compressor

The compressor is the key mover in explosion proof chiller because it produces pressure variations to stir the refrigerant around.

From 1/2HP(1/2 Ton) to 60HP(5oTon) brewery chiller , which is with Panasonic or Danfoss brand Scroll compressor ,

Above 60HP(50 Ton) explosion proof chiller , which is with Hanbell or Bitzer brand Screw compressor ,

These brand compressors are with high refrigeration efficiency,low noise ,energy saving,environmental protection and durability,safety and stability.

Hanbell Screw Compressor


5.2 Evaporator

The evaporator is a crucial component of explosion proof chiller, as it is responsible for extracting heat from the liquid being cooled,it is located between the compressor and the expansion valve. There are three types of evaporators : coil in water tank evaporator , shell and tube evaporator, 304SS stainless steel plate type evaporator.

Coil in SS Water Tank Evaporator


SS Plate Type+ Water Tank Evaporator


Shell and Tube Evaporator


5.3 Water Pump

The water pump for explosion proof chiller is explosion-proof .

Explosion Proof Water Pump


5.4 Condenser

The condenser for air cooled explosion chiller is equipped with efficient cross-seam fins and female threaded copper tubes for high heat exchange efficiency and good stability. The fan on the top of explosion proof chiller is also explosion proof .

 

Aluminum fin+fan Condenser for explosion proof chiller


The condenser for water-cooled explosion proof chiller is shell and tube ,with the internal copper tubes employing an outer thread embossing process.This design effectively enhances the heat exchange efficiency between the refrigerant and water during the process. Compared to traditional smooth copper tubes, the outer thread embossing process increases the surface area of the copper tubes, thereby expanding the contact area for heat exchange and improving the thermal conductivity of the condenser. This optimization design allows the condenser of the water-cooled chiller to transfer heat from the refrigerant to the water more rapidly and consistently, enabling the water to carry away the heat.

Shell and tube Condenser for water-cooled explosion proof chiller


5.5 Electric Box

The electric box for chiller is also explosion proof .

Explosion Proof Electric Box


Understand the explosion-proof Classes

Explosion protection classifications designed by the National Electrical Code (NEC) are key safety standards aimed to minimize the risk of explosions in environments containing flammable gases, vapors or combustible materials. These guidelines play a vital role in classifying electronic devices and equipment based on their ability to withstand potential explosions within structures.


In industries such as oil and gas, chemical processing, mining and manufacturing, compliance with these classifications is critical. Following these guidelines will not only protect personnel and assets but also significantly reduce the likelihood of a catastrophic event, maintaining high standards of operational integrity in high-risk environments.

Category

Sub-category

Definition

Class

Class I

Suitable for hazardous locations containing flammable gases or vapors.

Class II

Suitable for hazardous locations with combustible dust.

Class III

Suitable for dangerous places where flammable fibers or flying objects exist.

 

Division

Division I

Designated locations where explosive materials are present under normal operating conditions.

Division II

Designating a location where explosive materials are handled or stored, subject to restrictions and controls.

Group (Class I)

Group A

Atmosphere containing acetylene

Group B

Places containing hydrogen or gases with equivalent hazards, such as man-made gases.

Group C

Locations containing ether vapor, ethylene or cyclopropane

Group D

Locations containing gasoline, naphtha, hexane, gasoline, butane, benzene, acetone, alcohol, paint solvent vapors, or natural gas.

Group (Class II)

Group E

Locations containing metal dust, including aluminum, magnesium, their commercial alloys and other similar hazardous metals.

Group F

Places containing coal, carbon black or coke dust.

Group G

Locations containing starch, flour, or grain dust.


What are the Applications of an Explosion Proof Chiller?

We equip our explosion-proof chillers with extra features and rugged materials to ensure reliable operation in critical applications for many years to come. From nuclear science to plastics and rubber, custom explosion-proof chillers are used in many applications and protect your employees and facilities.Explosion-proof chillers have a variety of applications where cooling and protection from any type of explosion is required, including as below :


Chemical Plants

Chemical factories may generate or store potentially flammable substances. Even in storage spaces, the facility will need explosion-proof equipment.


Petrochemical Plants

To distinguish a petrochemical plant from an oil refinery, the former manufactures substances from petroleum while the latter refines crude oil. Both handle hazardous materials. The popularity of many petrochemicals, such as gasoline, is partly due to their flammability. The same properties also put petrochemical plants at risk of fire.


Cooling Flammable Liquids

Flammable liquids often emit hazardous vapors. These vapors make explosion-proof chillers and other equipment in the space required. If the fluid remains sealed, the area will only require Class I, Division 2 approved equipment.


Refineries

Petrochemical refinement requires extreme caution with all materials used. Flammable gases produced in refineries require Class 1 explosion-proof chillers.


Sample or Process Analyzers

Using sample or process analyzers, workers can identify the chemical makeup of various substances. Explosion protection in the sample analysis area saves lives as the components are unknown and potentially harmful elements.


Granaries

Flour is very flammable. Ask anyone who lives near a granary and has heard stories of the explosions. The fine dust in the air only needs a small spark to detonate. This is why silos and grain bins require explosion proof equipment.

Laboratories

Ventilation in laboratories is critical to the safety and health of workers. Fire safety and explosion protection are also important. Anywhere volatile, flammable vapors or gases are present, special electrical components are required to prevent stray sparks that could ignite.


How I Can Choose The Right Explosion-proof Chiller System?

There are five important chiller specifications you need consider when you choose a chiller for your application :the voltage required for operation, the associated pump horsepower and flow rate (contact us for custom selection), refrigerant, and the evaporator type.


8.1 Cooling Capacity for chiller

One of the most frequently ask about how we can know the cooling capacity for chillers. We use KW ,Ton, But/h,Kcal/h to choose chiller cooling capacity :1 KW=860 kcal/h ;  1 TON=3.517 KW;1 KW=3412 Btu/h;


There is also a formula to calculate the cooling capacity for chiller:.

Cooling Capacity(kw)= Flow Rate(m3/h)*Temp Change(T1-T2)/0.86

Heat Load= C(specific heat)* M(quality output per hour )*Temp Change(T1-T2)

Oversize the chiller by 20% Ideal Size in KW = KW x 1.2

Noted : T1:Incoming Water Temperature (℃)      T2:Required Chilled Water Temperature(℃)    

   

For example, what size of chiller is required to cool 10m³ water from 35°c to 15 °c in 1 hour?

Temperature Differential = 35℃-15℃=20℃

Water Flow Rate = 10 m³/hour

Cooling Capacity in KW = 10 x 20 ÷ 0.86 = 232 KW

Oversize the chiller = 232 x 1.2 = 278.4KW

278.4 kw cooling capacity for chiller is required.


8.2 Power

Different countries and regions have different standards for industrial electricity, the common power supplies are 208-230V, 380-420V,440-480V,50Hz or 60Hz, 3phase.

Such in Philippines ,the power supply is 220V 60HZ 3PH , 380V 60HZ 3PH ,460V 60HZ 3PH;

in Singapore and Malaysia ,the power supply is 415V 50HZ 3PH;

in Mexico ,the power supply is 220V 60HZ 3PH;

In USA ,the power supply is 208V 60HZ 3PH;575V 60HZ 3PH;480V 60HZ 3PH and so on


8.3 Water Pump

When you decide the capacity/tonnage of the chiller, we will recommend you the suitable pump in KW,which standard water pump is about 2 bar .If you need more high water pressure , please us when you inquiry.


8.4 Refrigerant

R22, R410A, R407C, R404A, R134A are optional choices.

R22: good cooling effect, but R22 is considered a powerful greenhouse gas, so it’s forbidden in most countries.

R410A: eco-friendly, R-410A has replaced R-22 as the preferred refrigerant for use in residential and commercial air conditioners in Japan, Europe, and the United States. R-410A operates at higher pressures than other refrigerants.

R407C: a good replacement for R22, good cooling effect.

R404A: suitable for application that requires low temperature(below -10°c).

R134A: a non-flammable gas used primarily as a “high-temperature” refrigerant, suitable for air-cooled chiller working at a high ambient temperature above 50℃.


8.5 Evaporator Choose

Chillers generally have two types of evaporators: one is coil in water tank evaporator ,the other one is shell and tube evaporator.

Coil and tank evaporator, which has a built-in water storage tank for more convenient use,so there’s no need for extra buffer tanks. This is also our standard evaporator for chiller , if you don’t have buffer tank ,we just use this evaporator for your chiller.

Shell and tube type evaporator, which requires an additional water buffer tank to connect .


Shipping Way of 70 Ton Industrial Water Cooled Explosion-Proof Screw Chiller

As a professional industrial water chiller supplier &exporter,we have our own shipment forwarder to arrange the shipment .Our chiller machine is with plywood packing,which prevent damage during transportation and meet export standards.There are three ways can delivery your chiller unit :


1. Ship by Air: As the chiller is with compressor ,water pump and fans ,the compressed refrigerant and oil inside the compressor is a dangerous item with the possibility of explosion , so it needs to release the compressed refrigerant before transportation. (It means that water chiller without refrigerant when choosing this shipping way. After the machine arrives at your destination, you need to add refrigerant by local professionals. The airline company also request us to provide many documents to prove that the chiller not a dangerous product. The freight cost by air is very high may be higher than the cost of chiller , So By air for delivery is not the mode of transport recommended to our customer.


3. Ship by Sea: The transportation time is longer than by air , but the freight cost is cheap ,and there is no need to add refrigerant after the equipment arrives at the destination.This shipping way is the most suitable mode of transportation for you to delivery your local port.


3.If you have your own shipment container in your other supplier in China, we can help you delivery the chiller machine to your supplier in any city of China .


Why should you choose Tongwei for your custom explosion proof chiller supplier?

▪ Experience you can trust

We have been designing and building water chiller for over 15 years. From air cooled chiller to water cooled chillers and everything in between, we have built chillers for nearly every industry and every application.


▪ Fast Quote

Get a quote for your project today! We typically provide a custom quote within 2 hours.


▪ 24/7 customer service

Believe that we will always be by your side. Whether you have a question or need a quote, there‘s always someone answering the phone 24 hours a day.


▪ Durable and reliable machine

Our products are manufactured from high quality materials and we offer a competitive warranty on all  industrial chillers.



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