6 Major Types of Air Compressor Control

In the production of air compressors, it is important to design the major air compressor controls as they help in regulating the delivery of compressors in accordance with the demand.

There needs to be a control over the discharge pressures for better energy usage and much more.

The control strategies are very much essential for the better functioning of the system and high performance.

The control systems largely depend on the type of compressors used.

The system with multiple compressors are in need of heavy control strategies much greater than one that requires only one compressor with a steady demand.

Here is the list of all the six major types of compressor controls:

• Start/Stop: This is the most basic form of compressor control that switches on and off the motor, facilitating discharges from the compressor in accordance with the pressure signal. It cannot be used in systems that require frequent cycles, because consequent starts will cause overheating. Thus are more applicable in systems with low cycle rates.  (reciprocating and rotary screw compressors)

• Load/Unload: This control system is also widely known by the name- Constant Speed Control, because in this the motor never stops, it runs continuously, but unloads the air compressor when the desired pressure is met. It reloads again with a low discharge pressure for optimal working. (reciprocating, centrifugal, and rotary screw compressors)

• Modulating Controls: Also known as Throttling or Capacity Control, as they modulate the compressor output in dire accordance with the flow required. This important modification or control is done by shutting the inlet value, so that inlet air stops entering the compressor and it can safely unload the consisting output. (centrifugal and rotary screw compressors)

• Dual/Auto dual Controls: In dual controls, it allows a system that offers a selection between start/stop or load/unload in small reciprocating compressors. Whereas the auto dual control in rotary screw compressors, all modulations automatically work according to the pre-set time. At a fixed time the reduction of the capacity happens then unloading of the compressor and then stops the air compressor for a pre-set time.

• Variable Displacement: This control system allows a gradual reduction of the air compressor discharges or outputs without reducing the inlet pressures through various valves. This scheme has a relatable connection with motor power consumption and loaded capacity. (Reciprocating and rotary screw compressors)

• Variable Speed Drives: In accordance to the system signals these control schemes are efficient enough to adjust the air compressor capacity by varying the speed of the motor that in turn runs the compressor. 

All these six major air compressor controls are seen in different types of air compressors as per the requirements.

The best compressor overhauling companies in Dubai and other parts of the world repairs all kinds of technical issues in relation to the compressor control systems for better functioning. 

5 Added Advantages of Air Curtains

Air Curtains are the cooling devices that are usually installed on top of the doorways of major industries, warehouses, restaurants, malls, hospitals etc.

They effectively separate the two environmental temperatures.

The moment you enter inside a mall, you can feel the cooling effect in contrast with the heat that was felt outside.

This is due to the operation of air curtains.

Air Curtains in Dubai, helps in the installation of air curtains in restaurants, hospitals and commercial industries in Dubai.

Apart from the industrial benefits of air curtains like the energy savings, increased safety, business profitability and increased productivity, air curtains do have certain added advantages such as:

• Saving Space: By installing air curtains over the vestibules, the company saves a lot of energy indeed. There also adds the benefit of space, air curtains maximise floor space. Air curtains are usually installed with minimum cost and they are neatly placed on top of the doorways, without taking any extra space.

• Design Flexibility: Installing air curtains will not require a change in the design of the building. They stay as an unseen barrier against the outside elements. They are very much useful in the main entrance doorways of the companies, where the doors are often kept open, or are in need of opening frequently throughout the day.

• Employee Comfortability and Satisfaction: Air curtains help to maintain the stable environment inside the firm. They use less supplemental heat than vestibules, increasing the comfortability of the employee. They maintain the temperature in all kinds of weather and help to keep the traffic flow unhindered.

• Prevents foreign contaminants from entering inside: Air curtains limit the entrance of airborne contaminants like dust, pollutants, bad odours etc into the firm. They also restrict the appearance of insects and pests from the outer air.

• Pay-back period: All the energies and the installation costs that are being saved adds up to a potential amount. The amount can be a three-year payback for an air curtain, when compared to the costs of installing a permanent and expensive construction. 

These are the five added advantages that are provided by the air curtains apart from the other technical benefits.

Best air curtains in Dubai install the air curtains considering the door characteristics, ventilation and the other conditions. 

Blast Freezers: Why do you need them?

Blast freezers are cooling systems that are used in food production areas for food preservation.

They are also known as shock freezers.

The basic idea behind the principles of blast freezing is to reduce the temperature of fresh food items rapidly in order to freeze them.

This is done to stop bacteria from deteriorating the food products, thus preserving them for a longer period of time.

Thus all the food businesses are in heavy need of refrigeration applications to ensure the quality of the food items by keeping it fresh and safe.

HVAC chiller services in Dubai, Sharjah, etc provides quality services in the installation of blast freezers for the food businesses around. The major advantages of blast freezers are:

• Hygienic factor of food products: All kinds of food items have the presence of microorganisms in them. When food products are stored in the wrong temperature the microorganisms get reproduced and spoils the food completely. Blast freezers facilitate a rapid lowering of temperature thus making the microorganisms sterile and unable to function.

• Preserves moisture of the food: When food items are stored in freezers about 85.5% of the moisture content can be preserved. It helps the food items to maintain its firm shape, flavour and nutrition value. It also prevents the growth of microcrystals formed in between the cells. Thus, all together the temperature maintenance of the freezer gives healthy, tasty and fresh food.

• Beneficial in commercial kitchen: In case of a large commercial kitchen, the chefs may have to face lots of unexpected orders. In such a situation blast freezers help them in proper planning and preparing of food ahead of time. The customers don’t have to wait for a long time, everything including the service can be properly managed. 

• Reduce food wastage: With the help of freezers, food items are preserved for several days. These food items are sure to be ruined without freezers.  Thus, using best blast freezers can reduce the amount of food items wasted.

Blast freezers are best in fulfilling the expectations of food standards.

There is no hope for bacteria to contaminate the food items frozen in blast freezers.

The top HVAC chiller services in UAE and other parts of the world helps in installing the best blast freezers according to the client’s business needs.

This will in turn help them in expanding their business and further food productions. 

How Air Conditioner Units are related to Indoor Air Quality

The common misconception is that air conditioners are just used for the cooling effect inside a room or an office, in fact they do a lot more than that.

They immensely have a role in the indoor air quality, which is precisely the combination of clean air (free of dust or pollen), humidity, temperature control and odour.

Indoor air quality really matters to people, as the air we inhale must be clean, fresh and healthy for our well being.

The best HVAC services provide high quality air conditioner units that ensure quality air inside the room or elsewhere.

Here are some of the tips that can surely upgrade the quality of air and make it more clean and fresh:

• Change the air filters on a regular basis, within 3 months or so suggested by the manufacturer: It is the air filters that keep out the dust, pollens and others that creates health problems away from the room, thus they need constant change. A dirty air filter can cause many troubles of limiting the airflow or overheating the device that leads to serious damages.

• Get a high efficient system: For maintaining good indoor air quality it is necessary that there is more air circulation for longer periods, that is, the air constantly needs to pass through the air filters. A high efficient system unit will be capable of working for a longer period of time with minimum power, always keeping the air at motion.

• Avoid using the air conditioners or ductless systems that don’t have proper air filtration: Ductless systems may be effective in small spaces like rooms, but for a more centralized cooling effect, they might prove inadequate with their air circulation and filtration system. For a quality and healthy indoor space, the air needs to be moving through the ducted centralized air conditioning system for larger spaces. 

• Always keep the humidity low: Humidity usually makes the air more hotter than it actually is, putting the blame on the AC unit. It is always more comfortable and healthy without humidity as they can form molds which are harmful for the health of people. The air conditioning systems have a special capacity of acting like a big sponge that removes the humidity from the house, making it safer and healthier to live in.

Thus, it is to be duly noted that a high quality air conditioning unit always contribute a great deal to the indoor air quality, as long as you have picked the right equipment in collaboration with the best HVAC services in UAE or other parts of the world, installed the device perfectly and do all the filter changes and necessary maintenance works at the right time. 

Air Cooled Chillers vs Water Cooled Chiller

Chillers are the refrigeration systems that cool the environment by processing water or dehumidified air.

Vapour compression and vapour absorption are the two cycles used by the chiller for cooling. Among the two, vapour compression cycle is more popular than the other.

Air cooled chillers, water cooled chillers and evaporative condensed chillers are the three basic types of chillers.

There are best chiller repairing services available all around the world. Let us see how air cooled chillers are different from water cooled chillers. 

• Condenser Differences: The basic difference between air and water cooled chillers is the method used to condense the refrigerant that comes out of the compressor. Air cooled condenser uses the air in the surroundings as the condensing medium and makes use of a fan to remove the air from the coil. Whereas the water cooled condenser uses water as the condensing medium and makes use of a pump to circulate the water in and out into the cooling tower, which will emit heat into the atmosphere. 

• Cost Differences: Air cooled chillers are costlier than water cooled chillers in terms of the installation and set up. Because it has installation costs for air ducts, fans etc. And they require more power sources to run the fan which will increase electricity bills. Yet they have lower maintenance costs since they do not require cooling towers, condenser water pumps and other water chemical treatments. Even though water cooled chillers cost less for setting up, they have high operational costs of cooling towers, water quality testing and treatments on water. 

• Efficiency Comparisons: Air cooled chiller’s efficiency depends on the temperature of the air used for condensing. If the circulating air is high in temperature, it reduces the cooling efficiency of the chiller. More energy has to be supplied for repeated air pumping to get the desired cooling temperature. Whereas a water cooled chiller is independent of the ambient air temperature. Thus, the utilization of water cooled chillers will certainly guarantee a stable regulation of coolant temperatures.

These are the basic differences between air cooled and water cooled chillers.

Depending on the condenser type, installation and cost preferences industries effectively choose between the two.

Chiller amc in Sharjah provides best chiller services with the qualified technicians hired. Get your chiller repaired, have a chilly life. 

Marine Air Conditioning: Basics and Different Types

 Marine Air Conditioning: Basics and Different Types

The basic principle behind air conditioning is the removal of heat particles from a closed cabin.

An air conditioner pulls the heat from the air and transports it to the refrigerant gas within the conditioner.

In the case of marine air conditioning the heat taken into the refrigerant gas is transferred to the ocean water. 

Three types of Marine Air Conditioners

• Self Contained Direct Expansion Systems (DX): This is the perfect choice for boats that are up to 40 feet, because this air conditioner is less costly and could be installed with less effort. One unit can cool several areas through ducting  which saves space and cost. Due to the compressor installed on the unit it is much noisier than the other two conditioners.

• Remote Systems (Split Gas): It is used on a boat of 80 feet. In this system the condensing unit is usually placed within the engine room whereas the air handlers are in the required areas of cooling. The air handlers are connected to the condensing unit with the help of copper lines, with a maximum distance of 50 feet. This system is more costly due to its high component cost, and therefore, the  requirement of a licensed technician for its installment, and the further maintenance. It takes up less space and doesn’t make much noise comparatively. 

• Tempered Water Systems (Chilled Water): This system is preferable for larger boats because they use refrigerant to chill coolant water which is then pumped to the air handlers which will supply cool air into the necessary zones.  This system can be used for all types of bigger vessels irrespective of size and the length between the cooling unit and the air handler. 

All the best marine air conditioners run on AC (alternating current) power. Marine air conditioning in UAE provides the best marine services with skilled and certified technicians. 

Hermetic, Semi-Hermetic and Open Compressors

 Hermetic, Semi-Hermetic and Open Compressors

A compressor is a device used to increase pressure on air by reducing its volume.

It is usually done by forcing the air into a closed container limiting its volume and then compressing it with great pressure.

Hence formed compressed air has many application values in this industrial era.

The two basic components of a compressor would be; the compressor and its driving motor. 

Depending on the position where the compressor and motor are situated in relation to the air being compressed, the compressors are divided into three:

• Hermetic Compressor: These types of compressors are industrially known as ‘hermetically sealed compressors’, because in this the motor and the compressor are sealed within welded steel. Thus, they stay together as a single compact unit, easily maintainable and it prevents any forms of leakage. One major drawback is that they cannot be repaired. Thus if damaged, the only option would be to replace it with a new unit.

• Semi- Hermetic Compressor: Here the compressors are also enclosed with the driving motor in a common housing. But the casing is with darted type gasketed covers with screws. Thus, the metal casing can be opened at any time without any effort to be repaired. These types are leak proof and cost efficient with more life span. 

• Open Compressor: Unlike hermetic and semi-hermetic compressors, open compressors are more vulnerable to leakage. In these, the compressor and the motor are positioned as two separate units with individual sealing yet they are attached by a belt or crankshaft. The leakage problems totally depend on the quality of the shaft seals. Open compressors are easily serviceable and are cheap as well. 

The advantage of repairability makes semi- hermetic and open compressors more preferable than hermetic compressors.

Overhauling compressor services in UAE provides best quality maintenance services for both semi-hermetic and open compressors.

The damaged compressors could also be restored completely, the qualified technicians of remanufactured compressor services in Sharjah, offer these restoring services with refined quality. 

Understanding Different Types of Ice Makers

Understanding Different Types of Ice Makers

Ice making machines come in different shapes and sizes depending on the business needs.

Restaurants or supermarkets might need one kind of ice maker different from that which are used in offices or households.

Thus, there is a need to understand the different types of ice makers to decide upon the perfect one that better suits your business type and needs.

The best HVAC chiller services in Sharjah and other parts of the world are equipped with quality ice making machines in different types to serve the client in the most effective way. The four major types of ice makers are:

• Modular Ice Maker: Modular ice machines are in need to be installed in a separate bin or dispenser. This type is basically used in commercial sites such as hospitals, restaurants or bars. They are highly preferable as they can be placed in narrow spaces. Low profile modular ice machines can be installed in work places with low ceilings. They store ice cubes in the bin, ready to be used at any time. If the requirement of the ice increases a larger bin can serve the purpose than a new modular ice machine.

• Countertop Ice Maker: They are also called portable ice makers that are compatible in size, thus can be moved. They are not in need of any permanent water line, just plug them in and pour water directly. The ice cubes can be made within ten minutes. They make ice quickly, but they can’t hold them, since they are not freezers. When the ice starts melting, they make more ice. They are commonly used in kitchens, bars, poolside etc.

• Undercounter Ice Maker: As the name suggests, they are built in ice makers that can be built between the cabinets with a front ventilation. Since they can’t be moved they are in need of a permanent water line. Thus, it is always installed with the help of professional plumbers. They are more expensive than the portable ice makers for its higher capacity level. They are used in the kitchen, office break rooms etc.

• Self-Contained Ice Maker: These are self contained systems that produce and store the ice cubes in the same unit. The bin is within the unit thus, they are smaller in size than all other ice makers. They require only low physical space, since they have lesser production rate and storage capacity. They are the most preferable option for food trucks.

Knowing the difference between the variant types of the ice makers, would be a great benefit to choose the best ice making machines for your business needs.

The best HVAC chiller services in UAE and other parts of the world helps the client with all services and installation of the ice making machines. 

 

Benefits of Installing a Split Air Conditioner Unit

Split air conditioner is a bit different from the traditional air conditioners as it consists of indoor and outdoor units that are interconnected with electric wires and tubes.

Usually the compressor is found in the outdoor unit installed outside the building, and this compressor helps in the functioning of single or multiple indoor units within the building.

One of the major advantages of split ACs in comparison to other air conditioners is that they lack a duct system for circulating air, which usually causes a lot of heat or energy loss.

Let us have a look at the different benefits of installing a split air conditioner:

• Easy Installation: Since split ACs are not in need of a duct system, and the outdoor and indoor units have to be kept at a distance of 100 feet away, all you need to have is a small space through the wall for the passage of copper tubing and control wing. It won’t even take much space if the outside condenser is being kept on the flat surface of the roof. 

• Easy Maintenance: Split ACs have removable filters that can be taken out and washed without any need of an expert. It is very easy to maintain and even the outside condenser is kept at a favourable position providing easy access for any kinds of maintenance and repair works.

• Silent Operation: The indoor units of split air conditioners are characterized by their extremely silent operations without causing noise at all. They are ideal to be kept in libraries, bedrooms, classrooms etc. The outdoor unit is kept at a distance without causing disturbance to any. 

• Cost Effectiveness: In the case of the multiple indoor units in split ACs, there is a possibility that you only need to cool certain areas at a time, saving a lot of energy and money. For example, the living rooms might need cooling only during the daytime and bedrooms at night, the split units efficiently facilitate the cooling effect accordingly at lowest costs.

• Simple Control System: Unlike the traditional ACs without a remote, split air conditioners come with a remote control, which can be used to regulate the temperature according to the needs. 

• Attractive Designs: Split air conditioners are highly presentable that automatically blend with the room decor and take up normal space instead of blocking the windows like older ones did. 

For all the advantages split air conditioners have over the traditional ones they are often preferred by the modern families and industrialists for a longer and optimal usage of temperature control.

The best HVAC services in Dubai and other parts of the world offer an efficient installation, maintenance and repairing of split air conditioners for the customers.