Mini Chiller

A mini chiller is a relatively new equipment used as an independent air conditioning system in apartments, villas, etc. In the following, the technical specifications, brands, buying guide, and the best price for all types of mini chillers are presented.

Mini Chiller Review, Selection, and Pricing

All mini chillers have refrigeration cycles based on their capacity, consisting of one or more scroll compressors with one or more circuits. Usually installed on the terrace or roof of a building. They cool down the water in the evaporator and then transfer it inside the building, which then flows through fan coils, providing the desired cooling for each room.

Types of Mini Chillers in Term of Usage

Mini chillers are usually produced and supplied in residential and industrial types:

Residential Mini Chiller

Due to their limited capacity, residential or home mini chillers are usually produced and supplied from 3 to 15 tons of refrigeration. In addition to cooling residential houses, villas, and apartments, residential mini chillers are also used for cooling units such as stores, shops, and offices. The compressor used in home mini chillers is scroll type.

Industrial Mini Chillers

As the name of this mini chiller refers, this type of mini chiller is used in the industry to absorb heat from industrial machines and prevent their temperature from increasing in the product's production process.

The only major difference between residential and industrial mini chillers is their type of compressor. Usually, the compressor used in industrial mini chillers is a piston type with more diverse working conditions and the ability to repair them (unlike scroll compressors, which cannot be repaired).

Types of Mini Chiller in Terms of Function

There are two types of mini chillers in terms of how they work; compression mini chillers and absorption mini chillers:

Compression Mini Chiller

Compression mini chillers have advantages such as high efficiency, reasonable price, easy installation and commissioning.

Absorption Mini Chillers

Absorption mini chillers also have advantages such as working with gas fuel, low noise, etc. But this type of mini chiller device also has disadvantages, including higher price, lower efficiency, and more complexity in installing and operating the device.

Note: Most of the mini chillers produced by different brands are of the evaporative compression type. A limited number of global brands have started to manufacture absorption mini chillers, which design their production devices for special applications such as hospitals, laboratories, etc., and they were not well received in the Middle East.

Benefits and Advantages of Mini Chillers

Here are some benefits of using a mini chiller:

• Two-season compatibility, which provides both heating and cooling in different seasons.
  
  
• Independent air conditioning system, as each unit operates independently, reducing overall costs.
  
  
• Depreciation, vibration, noise reduction, and a longer lifespan.
  
  
• Ability to be placed in open spaces, such as the roofs or terraces, saving valuable space inside.
  
  
• Minimum installation space: due to their compact dimensions and low weight, mini chillers only require a small installation area.
  
  
• Device reliability as a dependable cooling solution with low tonnage and optimal power consumption.
  
  
• Simple upkeep and affordable maintenance expenses
  
  
• Compatibility with dry and tropical climates
  
  
• The absence of a cooling tower in the compact chiller system
  
  
• Prevention of noise transfer between rooms via the cooling channel
  
  

Application of Mini Chiller in Homes and Offices

The most common use of mini chillers is the cooling of residential houses, apartments, offices, and stores with very comfortable air. The working method is that water as a heat transfer fluid is pumped to the fan coils installed in the building after cooling down in the mini chiller through the piping system.

By entering the cold water into the fan coils, blowing air on the other side, and passing the room air through the fan coil, its temperature is reduced, bringing very cool and pleasant air to the residents.

Application of Mini Chiller in Industrial Buildings

The use of mini chillers is not limited only to the air conditioning of buildings; the other use of this device is in the industry.

In most industrial factories, such as the food industry, plastic industry, steel industry, pharmaceutical and chemical industry, health industry, glass making, etc., the process of product production is associated with the production of a lot of heat, mini chillers are used to absorb heat and directing it to the outside environment is very useful. Increasing the temperature of the industrial environment and increasing the temperature of the interior factories causes serious damage and financial losses to industrial equipment and parts.

Mini Chiller & Ducted AC Unit Comparison

The difference between a ducted AC and a mini chiller system is not much, regarding operating costs, primarily electricity consumption, periodic maintenance expenses, and refrigerant gas charging period.

Due to the rapid requests from the builders of residential units about the cost of preparation, implementation, and operation of a ducted split AC and a mini chiller for each residential unit. DamaTajhiz HVAC Group calculation and estimation refers that the costs depend on several factors such as the chosen brand, the size of the unit's infrastructure, the location and how it is implemented, etc.

Moreover, the overall cost of purchasing, installing, and operating a mini chiller is approximately 40% higher than a ducted split AC unit for a similar residential unit using a similar brand and under normal circumstances.

DamaTajhiz HVAC Group offers a wide range of mini chillers with comprehensive technical information and competitive pricing. We also strive to give our valued customers the ease of genuine guarantees and fast delivery, whether a single product for personal uses or bulk purchases for companies and construction projects.

DamaTajhiz HVAC Group proudly serves customers throughout the country, especially neighboring nations in the Middle East region. So feel free to explore our extensive collection and make your selection, knowing that the reliable expertise of DamaTajhiz HVAC Group will support you.

Note: Installing a mini chiller in older buildings with a malfunctioning or inefficient central chiller eliminates the need for other costly air conditioning equipment. A mini chiller installation can provide the desired cooling efficiency since the building's fan coils and piping network already exist.

Tips to Consider When Calculating the Capacity of a Mini Chiller

In general, the facility experts calculate the chiller or mini-chiller capacity required for each project, which is based on the exact calculation of the total refrigeration load capacity, in addition to calculating parameters such as geographical conditions (Ambient Temperature) and summer design temperature, altitude above sea level.

Relative humidity of the air, the type of building used (temperature inside the design), the type of materials used and the implementation of the building facade, the direction of the building about the angle of the sun, the number of floors, and the surface of the building, the number of people and small and large electrical equipment inside The building and... pay attention to the volume of cold water required and sufficient reliability coefficients in chiller performance.

But suppose you want to use the possibility of fingertip calculation (phase 1) of the chiller required for residential and office buildings in weather conditions such as Tehran, Mashhad, Karaj, Isfahan, Semnan, Shiraz, Erbil, Kabul, Mosul, Kirkuk, Sulaimaniyah, Aleppo, Mazar-e-Sharif, Kabul, Damascus, etc. In that case, you can consider the nominal capacity of 4 tons of refrigeration for every 100 square meters of the building.

Naturally, to calculate the cooling load in geographical areas with hot and dry climates, such as the cities of Yazd, Kerman, Zahedan, Zabul, Baghdad, Madinah, Karbala, Najaf, etc., more cooling capacity than moderate conditions should be considered in calculations.

Using a mini chiller with a fan coil, in addition to the many advantages below, makes it possible to change the season in autumn or spring when some residents may want to use the heating system and others want to use the cold system. The apartment units should be able to choose and apply their taste in providing the desired air temperature.

Also, by installing a mini chiller in old buildings where the central chiller is out of order or does not have optimal efficiency, there is no need to install and use other expensive air conditioning equipment because the fan coils and piping network already exist inside the building, by installing a mini chiller, you can get the desired cooling.

How Mini Chillers Work

Mini chillers are air-conditioned chillers with smaller dimensions and capacity, and their performance is as follows:

The compressor of mini air chillers compresses the refrigerant gas. Condensed gas with high pressure and temperature enters the condenser, is cooled by water or ambient air, and turns into a liquid; this refrigerant liquid passes through the expansion valve or capillary tube, whose job is to break the liquid pressure. It is placed at a low temperature to absorb the heat of the water inside the evaporator after entering the coil.

Due to the evaporator's lower pressure than the condenser, the refrigerant liquid evaporates, and the heat needed for this evaporation process is supplied from the water flowing in the air conditioning system inside the evaporator. As a result, the water of the refrigeration system inside the evaporator is cooled and then by the circulator pump system. The cold water coil of the fan coil and the air conditioner are transferred to create cool air in the desired location. After this process, again with the compressor's suction, the gas caused by evaporation moves towards the compressor, and this cycle continues.

Mini Chiller Components and How They Function

Mini chillers consist of various mechanical components, control circuits, and electronic components, the most important ones are:

Mini Chiller Compressors: The compressor is one of the main equipment of the refrigeration compression cycle and is actually the beating heart of the mini chillers system, which is usually scroll or piston type. In general, scroll compressors are among the lowest depreciation types of compressors that have a longer lifespan. The main task of the compressor in mini chillers is to condense the gas and direct it to the condenser.

Mini Chiller Condenser: The condenser in the refrigeration cycle of the mini chiller is a type of dry air-to-gas heat exchanger and the function is to remove the heat of the refrigerant gas to the outside environment. In this way, the heat inside the building, which is absorbed by the refrigerant in the condenser and in the vicinity of the air, is transferred to the outside environment.

Mini Chiller Expansion Valve: The main function of the expansion valve in the refrigeration compression cycle of the mini chiller is to prepare the refrigerant to absorb heat in the evaporator chamber. In this way, after passing through the expansion valve, the refrigerant suddenly drops in pressure and temperature so that it is ready to absorb heat from the water and cool it down. The expansion valve in mini chillers can be both mechanical and electrical.

Mini Chiller Evaporator: The evaporator in the condensation refrigeration cycle of the mini chiller is also a type of heat exchanger and its function is to absorb the heat of water and cool it down to a temperature of 7 degrees Celsius.

The cooled water is then pumped to the fan coil after leaving the evaporator. Usually, evaporators in mini chillers are of two types: "shell and tube" or "plate". One of the most important advantages of using shell-tube evaporators is their low price and long lifespan, and one of the advantages of plate evaporators is their small form factor.

Mini Chiller Refrigerant Gas: In mini chillers, like any other air-cooled chiller, different refrigerant gases such as R22, R407c, and R410a are used (based on the request and order of the customers). For example, if the mini chiller is produced for applications with a high cooling capacity, refrigerants with a high heat transfer coefficient such as R410a are usually used, and if the mini chiller is designed for applications with a low cooling capacity, refrigerants with a lower price than They use sentence R22.

Extra: Other peripheral equipment such as a steering circuit board, electronic boards, water pump, insulated expansion source, service valve, electric valves, anti-freeze protection system, voltage protection, water flow protection, etc. are among other components of a mini chiller.

Note: It should be noted that the type of refrigerant gas has a great impact on the working pressure and efficiency of the mini chiller. Therefore, choosing the type of refrigerant with the right working pressure improves the performance and efficiency of mini chillers in different conditions.

Mini Chiller Installation Location 

The place of installation of mini chiller in residential buildings and apartments is usually on the terrace or balcony of the building so that the length of piping (the cost of purchasing and running it) is as low as possible.

However, due to the small space of most apartments with a small terrace and balcony, the balcony space is often unsuitable for installing a mini chiller, in which case the device is installed on the roof. On the other hand, because mini chillers are air-cooled, it is recommended to install these devices on the roof because usually there is not enough space in the terrace and balcony for the airflow and circulation of the condenser cooling system of mini chillers.

Factors to Consider When Buying a Mini Chiller

The first step when wholesale buying a mini chiller is to consider the dimensions of the space where the device will be utilized. Mini chillers come in various types and capacities, so it is essential to evaluate the size and requirements of your environment to select the appropriate model. Factors such as energy consumption, features, brand, and price should also be considered.

The DamaTajhiz HVAC online store provides technical information on numerous mini chiller models from reputable brands with original warranties, ensuring a satisfactory and smart shopping experience.

Mini Chiller Price

The price of a mini chiller can vary a lot based on the capacity and brand of the device. Then again, the first thing you should do is to determine the brand and required capacity. All mini chillers featured on the DamaTajhiz HVAC website include product identifiers, good pricing, and discounts, which are already included.

Also note that in the specialized HVAC group of Damatajhiz, all the mini chillers are only sold in bulk. Therefore, if you want to wholesale any of these products, contact us.

Buying a Mini Chiller

The first step to buying a mini chiller is to pay attention to the actual cooling capacity and the type of compressor of the mini chiller, as well as the dimensions of the place where the device will be used.

Mini chillers are produced and supplied in different types with different cooling and aeration capacities, and you should consider the dimensions of your environment before buying a mini chiller. Things like the type of compressor, control circuit, energy consumption level, features, and brand should be examined.

On this website, the technical information of dozens of models of mini chillers, from well-known brands with original warranties, has been presented in order for you to enjoy the good feeling of optimal and smart shopping.

Why You Should Choose DamaTajhiz to Buy Mini Chillers

Some of the advantages of buying a mini chiller from the specialized group of DamaTajhiz include the following:

1. Variety in brands and models: DamaTajhiz offers products from well-known and reliable brands for the purchase of mini chillers. It includes brands such as Gree, Daikin, Media, etc., which allows customers to choose the best option based on experience, price, and specific features.
   
   
   
2. Reasonable and Competitive Prices: One of the prominent advantages of DamaTajhiz HVAC is to provide a reasonable and competitive price for customers. Due to the price competition in the market, DamaTajhiz offers its customers a competitive and suitable price for buying all kinds of mini chillers, especially DamaTajhiz mini chillers.
   
   
   
3. Technical Consultation: DamaTajhiz also provides technical consulting services to its customers. These services include choosing the most suitable mini chiller based on space and user needs, advice on how to choose and buy, and also advice on maintenance and repairs.
   
   
   
4. Authenticity of the Products: Buying from DamaTajhiz HVAC means buying original products. Customers can be sure of the authenticity and quality of the products offered by the specialized group of DamaTajhiz and have no worries in this regard.
   
   
   
5. Valid Quality and Guarantee: DamaTajhiz provides complete after-sales service for its customers if they choose DamaTajhiz products, which includes the guarantee of the originality of the product, warranty, repair, and maintenance services.
   
   
   
6. Convenient Purchase: Customers of DamaTajhiz can easily and at any time choose and order the mini chiller they need without the need to be physically present and benefit from easy and fast delivery services.
   
   

Buying a mini chiller from DamaTajhiz HVAC is a safe and economical option for applicants who are looking for productivity, quality, after-sales service, and reliable warranty, especially from DamaTajhiz brand products including DamaTajhiz mini chillers.

Which Mini Chiller Brand is Better?

According to the frequent questions that many respected users and employers ask heating experts when consulting and choosing the mini chiller or other types of chillers they need, we would like to inform you that the choice of brand is usually based on the technical specifications, quality, history, and price of the product. Most employers welcome Media, J Plus, DamaTajhiz, Ax, and Green mini chillers.

Can Mini Chillers Also Be Used as Heating Systems?

Yes, with special equipment, the mini chiller device can heat water in winter and transfer it to fan coils regarding the cooling function in summer. In addition, for heating with a mini chiller, a heating coil must be installed in the water outlet (return) of the device.

Although, it has no economic justification in the Middle East. Due to the reasonable price of natural gas, so there is no need to generate heat using electricity in the Middle Eastern regions. Therefore, to heat the building in winter, it is more cost-effective to use an engine room or a hot water boiler due to the abundance and cheapness of gas in our country.

How to Reduce the Electricity Consumption of a Mini Chiller

In general, the power consumption of mini chillers can vary based on the cooling capacity, compressor type, number of fans, and whether the device uses three-phase or single-phase electricity.

Firstly, the refrigeration capacity of mini chillers determines the amount of electricity they consume, and the higher the refrigeration capacity of mini chillers, the higher their electricity consumption.

Secondly, the type of compressor as the second determining factor has a great impact on the electricity consumption of the mini chiller. For example, scroll and rotary compressors have lower power consumption than piston compressors. In addition, mini chillers have either one or two fans and two-fan models have higher electricity consumption.

Thirdly, all mini chillers can be either single-phase or three-phase based on their capacity and control circuit, and the three-phase type has less electricity consumption.

So make sure to follow these points in order to reduce the electricity consumption of a mini chiller:

• Choosing a mini chiller with suitable cooling capacity
• Use of scroll or rotary compressor in mini chillers
• Choosing a mini chiller with three-phase electricity
• Setting the temperature of the thermostats inside of the unit to the comfort number of 25 degrees Celsius
• Regular service and maintenance of mini chillers
  
  

Dear users:

Reading the stated information above to obtain additional information to purchase the types of mini chillers. You can also contact the experts of the AC equipment by dialing one of the extension numbers 117-119-120-126-317 to get advice or just to ask your questions.

Dear users, while thanking you for the trust you put in the technical opinions of air conditioning sales experts of DamaTajhiz, it should be noted that the choice of the desired product brand based on history, brand strength, service, and product price is ultimately determined by the buyer. But in mini chillers, most users and buyers choose and buy best-selling brands such as Midea, DamaTajhiz, and AUX due to their quality, price, and after-sales service.

Also, considering that the Damatajhiz HVAC Complex is a member of the main group specializing in heating equipment, is the first and the most viewed authority for selling air conditioning equipment, and is an official member of the heating and air conditioning equipment sellers' union. Therefore, it is now safe to say that we provide all kinds of mini chillers in the Middle East region. Therefore, if you are from the same country in the region and you need a cooling tower, please place your order with our sales experts team. Product warranty and a reasonable price are included.

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