Product Description

commercial duct air water evaporative coolers

JHCOOL air cooler Working Principle:
Nature’s most efficient means of cooling is through the evaporation of water. Evaporative cooling works on the principle of heat absorption by moisture evaporation. It also happens on human skin, the body sweat to cool temperature down.

Product Advantages:

1.High Quality plastic cabinet— UV-resist

2.Free spare parts with Online/video support for after-sale service

3.Economical and energy-saving :only 1.1kw per hour,less than 1/3 the price of air conditioning but 10 times energy saving.

4.Keep door and window open,always with fresh air.

5.Higher cooling efficiency–18000 M3/h air flow provide you 100-150m2 fresh cool air by low energy .–Distance Cooling effective-8~10 °C↓

6.Water shortage protection.

7.Multi-functional: can be used as humidifier,air purifier,airfilter,ventilator,fan.

8.Easy to use,clean and maintain.

9.The body material adopts modified copolymerization New PP engineering plastics shell, ultraviolet resistance, corrosion resistance, anti-aging, resistance to deformation.

10.Using highly efficient cooling pad of evaporative cooling, and obvious cooling effect, easy to clean.

Specification for JH18AN1 Evaporative Air Cooler:

Model JH18AN1
Max airflow 18000cmh
Fan type Axial
Cooling area 100-150 m2
Power 1100w
Noise 73
Water tank 30L
Water consumption 15-20 L/H
Net weight 80/81.5/110kg(down/top/side discharge)
Gross weight 90/91.5/120kg(down/top/side discharge)
Packed size 1170*1170*1160mm
Dimension 1160*1160*980mm
Loading quantity 20′ Container:30 PCS, 40 Hq:72 PCS
control type LCD+Remote Control
Remote control Yes
Overload protection Yes
Temperature display yes
Pump protection yes
Intelligent Clean Traic type
Pre-dust Filter Yes



Project Cases: 


Q: How often should the cooling pads be replaced?
Pads should be changed when they no longer cool as effectively as they did when new. This generally happens when mineral deposits on the pads become so heavy that the water running over them during operation cannot be absorbed. If a pad is properly cleaned and maintained, its life can be 3 to 5 years or more. But, we advise customer replace the pad every 2 or 3 years to keep the best cooling efficiency.


Q: How much water do I put in?
The amount of water required will vary depending on the size of the unit you own. To help determine the correct level, each water air cooler is equipped with a water level indicator. It can be found on bottom sump of the unit. Add water until the indicator shoes that the water reservoir is filled. Water will leak from the unit if it is overfilled.


Q:How much water do I put in?
The amount of water required will vary depending on the size of the unit you own. To help determine the correct level, each evaporative cooler is equipped with a water level indicator. It can be found on bottom sump of the unit. Add water until the indicator shoes that the water reservoir is filled. Water will leak from the unit if it is overfilled.


Q: Advantages for evaporative air cooler compared to refrigerated cooling systems?
Evaporative cooling will provide substantial energy savings over refrigerated air units. The simplicity of the design allows low maintenance requirements. The evaporative air cooler will provide fresh, filtered air. The outside air that has been cooled will blow the stale inside air out. With the substantial savings on energy and the air constantly changing, the industrial / commercial water air cooler is ideally suited for area cooling or spot cooling in factories, laundries, churches, schools, agri-businesses, restaurants and many other applications.


Company Information
ZheJiang Xihu (West Lake) Dis.i Technology Co., Ltd(short for JH Tech) is the leading eco-friendly evaporative air cooler manufacturer established in HangZhou China in 2006. It’s a high-tech enterprise focused on energy-saving, evaporative air cooler’s R&D, marketing and excellent customer service. By owning experienced experts and aggressive sales, it makes JH Tech to give its clients professional service like factory, cafes, supermarket, base station etc. Through 10 years growth, JH Tech had completed its whole industry chain layout and became a truly leader in the industry.

JH Tech has more than 50 outlets all over mainland China. Enjoying an outstanding reputation over 100 clients around the world. Being the fastest growing Chinese company in the Eco-AC industry since 2006 and 8 consecutive years sales champion with its inverter evaporative air cooler.

JH Tech’s version is “Be the No. 1 eco-friendly cooler maker in China and the Whole World ” For now, JH Tech has 2 mainly product series covering the commercial and household type, which include standard unit, industrial unit, window unit, mobile unit and home used unit. More than 40 kinds of models to meet all clients’ needs. Owned ISO9001:2000, CE, CB, CCC, SAA, SASO, UL certificates.

JH Tech was the first 1 use inverter technique upon Japan-made IPM frequency conversion module in order to save more energy. Its highly qualified recycling water pump can protect water pump from damaging in water shortage situation. What’s more, its auto pad self-cleaning tech and auto temperature and humidity control tech had filled the industry’s blankness.

Best quality, professional R&D ability, comprehensive products lines and excellent customer service lead JH Tech to a bright further in evaporative cooler market and infrared radiant heater market as well. With all the strength, JH Tech will become much more powerful and reliable in the CZPT industry. NO JH, NO COOLING!

Warmly Welcome to visit JHCOOL Factory in HangZhou,ZheJiang Province.
We will pick you up at anywhere in HangZhou: 
HangZhou Xihu (West Lake) Dis. International Airport:About 40- 50 mins
HangZhou South Railway Station: About 20 mins
HangZhou Railway Station: About 30 mins

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The importance of pulleys

A pulley is a wheel that rides on an axle or axle. The purpose of the pulley is to change the direction of the tensioning cable. The cable then transfers the power from the shaft to the pulley. This article explains the importance of pulleys and demonstrates several different uses for this machine. Also, see the Mechanical Advantages section below for the different types. let’s start.

simple machine

A simple pulley machine is a device used to transfer energy. It consists of a wheel with flexible material on the rim and a rope or chain tied to the other end. Then lift the load using the force applied to the other end. The mechanical advantage of this system is one, as the force applied to the load is the same as the force on the pulley shaft.
A simple pulley machine has many benefits, from the ability to build pyramids to building modern buildings with it. Pulleys are also popular with children because they can perform simple tasks such as lifting toys onto a slide, sliding them off the slide, and lifting them up again. These activities, called “transportation” by child development theorists, allow them to learn about the physics of simple machines in the process.
The mechanism works by using cables to transmit force. The cable is attached to 1 side of the pulley and the other side is pulled by the user. Lift the load by pulling on 1 end and the other end of the rope. Simple pulley machines have many commercial and everyday applications, including helping move large objects. They can be fixed or movable, and can be a combination of both. The present invention is a great tool for any beginner or engineer.


The axle wheel is the basic mechanical part that amplifies the force. It may have originally appeared as a tool to lift buckets or heavy objects from a well. Its operation is demonstrated by large and small gears attached to the same shaft. When applied to an object, the force on the large gear F overcomes the force W on the pinion R. The ratio of these 2 forces is called the mechanical advantage.
The ideal mechanical advantage of shaft pulleys is their radius ratio. A large radius will result in a higher mechanical advantage than a small radius. A pulley is a wheel through which a rope or belt runs. Often the wheels are interconnected with cables or belts for added mechanical advantage. The number of support ropes depends on the desired mechanical advantage of the pulley.
In the design of the axle wheel, the axle is the fulcrum and the outer edge is the handle. In simple terms, wheels and axle pulleys are improved versions of levers. The axle pulley moves the load farther than the lever and connects to the load at the center of the axle. Shaft pulleys are versatile and widely used in construction.

rope or belt

Ropes or pulleys are mechanical devices used to move large masses. The rope supports a large mass and can be moved easily by applying a force equal to 1 quarter of the mass to the loose end. Quad pulleys have 4 wheels and provide the mechanical advantage of 4 wheels. It is often used in factories and workshops. It is also a popular choice in the construction industry. If you are installing a pulley in your vehicle, be sure to follow these simple installation instructions.
First, you need to understand the basics of how a rope or pulley works. The machine consists of 1 or more wheels that rotate on an axle. The rope or belt is wrapped around the pulley and the force exerted on the rope is spread around the pulley. It then transfers the force from 1 end of the rope to the other. The pulley system also helps reduce the force required to lift objects.
Another common rope or pulley is the differential pulley. This is similar to a rope pulley, but consists of 2 pulleys of different radii. The tension in the 2 halves of the rope supports half the load that the live pulley should carry. These 2 different types of pulleys are often used together in composite pulley systems.

Mechanical advantage

The mechanical advantage is the ratio of the force used to move the load through the pulley system to the force applied. It has been used to measure the effectiveness of pulley systems, but it also requires assumptions about applied forces and weights. In a simple 1:1 pulley system, the weight lifting the weight is the same as the weight of the person pulling the weight. Adding mechanical advantage can help make up for the lack of manpower.
This advantage stems from the mechanical properties of simple machines. It requires less force and takes up less space and time to accomplish the same task. The same effect can also be achieved by applying less force at a distance. Furthermore, this effect is called the output force ratio. The basic working principle of a pulley system is a rope with a fixed point at 1 end. The movable pulley can be moved with very little force to achieve the desired effect.
The load can be moved through the vertical entry using a simple pulley system. It can use a simple “pulley block” system with a 2:1 “ladder frame” or a 4:1 with dual pulleys. This can be combined with another simple pulley system to create a compound pulley system. In this case, a simple pulley system is pulling another pulley, giving it a 9:1 mechanical advantage.

Commonly used

You’ve probably seen pulley systems in your kitchen or laundry room. You probably already use it to hang clothes on an adjustable clothesline. You may have seen motor pulleys in the kitchens of commercial buildings. You might even have seen 1 on a crane. These machines use a pulley system to help them lift heavy loads. The same goes for theaters. Some pulleys are attached to the sides of the stage, enabling the operator to move up and down the stage.
Pulley systems have many uses in the oil and petroleum industry. For example, in the oil and gas industry, pulley systems are used to lay cables. They are arranged in a pulley structure to provide mechanical energy. When the rope is running, 2 pulleys are hung on the derrick to facilitate smooth running. In these applications, pulleys are very effective in lifting heavy objects.
A pulley is a simple mechanical device that converts mechanical energy into motion. Unlike chains, pulleys are designed to transfer power from 1 location to another. The force required to lift an object with a pulley is the same as that required by hand. It takes the same amount of force to lift a bucket of water, but it’s more comfortable to pull sideways. A bucket of water weighs the same as when lifted vertically, so it’s easy to see how this mechanism can be useful.

Safety Notice

When using pulleys, you should take several safety precautions to keep your employees and other workers on the job site safe. In addition to wearing a hard hat, you should also wear gloves to protect your hands. Using pulleys can lead to a variety of injuries, so it’s important to keep these precautions in mind before using pulleys. Here are some of the most common:
Pulleys are an important piece of equipment to have on hand when lifting heavy objects. Pulleys not only reduce the force required to lift an object, but also the direction of the force. This is especially important if you are lifting heavy objects, such as a lawn mower or motorcycle. Before starting, it is important to make sure that the anchoring system can support the full weight of the object you are lifting.
When using a pulley system, make sure the anchor points are adequate to support the load. Check with the pulley manufacturer to determine the weight it can safely lift. If the load is too large, composite pulleys can be used instead. For vertical lifts, you should use a sprocket set and wear personal protective equipment. Safety precautions when using pulleys are critical to worker health and safety.

China manufacturer Commercial Duct Air Water Evaporative Coolers     with high qualityChina manufacturer Commercial Duct Air Water Evaporative Coolers     with high quality