The truth about chiller replacements

Industrial chillers are great equipments that bring in a lot of great benefits to industries. But they’re also expensive. In fact, they may be the most expensive equipment in other companies.  This is the reason why it is important to observe chiller maintenance and make sure that chillers aren’t abused. Chillers need to be taken cared of if industries want them to perform and serve them for a long period of time. But all good things must come to an end. However with industrial chillers, caution and thorough decision should be done before making a choice.

The biggest mistake in chiller usage is thinking that just because chillers, no matter how used, are still operating mean that they are still ok. Used chillers are still operating but not efficiently anymore and the overall cost for electricity charges may be more than the initial cost of actually buying a new one. However, one must think of all the factors before getting a replacement for used chillers.

A chiller’s condition is important and how old it already is. Changes have been made over the years and if the chiller started operating 10 years ago with a specific set of load, chances are they have changed as well. This may have caused an oversizing of the chiller. You can do a review of the load profile of your current building and re-evaluate the maximum cooling load that the chiller needs to meet. If it can’t be met, it’s a good sign for the chillers to be replaced but it still needs to be evaluated thoroughly.

How efficient are air cooled chillers?

For some of us who have air conditioning chillers at home or industrial chillers in the offices, there are questions waiting to be answered. Only a few of us know how they truly work and there’s one thing that boggles the mind. When it comes to air cooled chillers, energy efficiency has become an ambiguous term.

Air cooled chillers remove heat from water or other fluids. This heat is then dispersed into air through a system called refrigeration.

It all starts when a fluid is forced with high pressure through a tube. This changes the fluid to turn into gas which absorbs heat through the evaporator heat exchanger. This gas then travels to the compressor where it is compressed into a hot gas before being pumped to the condenser. In the condenser, the gas is passed through small copper tubes with thin aluminum fins bonded to them. When ambient air is forced through the condenser via the process chiller’s fans, the gas is condensed back to a liquid state. In this process, the heat that the gas has collected is released through the chiller fans as well. The liquid is sent back to the tubes so that the whole process can start again.

The efficiency of an air cooled chiller depends on the efficiency of the chiller compressor. This can be measured through COP or Coefficient of Performance. A COP is the ratio of heat removed to the electrical input required. In chiller efficiency, the higher the COP is, the more energy efficient it is. If a COP is 5, it means that for every 1 KW of electrical energy input, 5 KW of heat is removed. If a COP is 10, it means that for every 8 KW of electrical energy input, 8KW of heat energy is removed.

Check out the COP of the chiller the next time you’re out chiller shopping. You can now tell the difference in terms of energy efficiency.

How do you keep chiller efficiency high?

Since industrial chillers are greatly needed for certain industries, it is important to keep them effectively and efficiently performing at all times. Despite what type of industrial chiller is used, only one thing remains certain: regular maintenance for chillers should be observed.

Chiller maintenance is an important part of a chiller’s life. In order to keep your chiller’s efficiency high, you have to take time to check it regularly. You need to check the tubes, the controls, refrigerant charge optimization and regular oil changes.

In cleaning the tubes, you need to inspect the heat exchanger tubes and flow devices. A tube’s condition will determine how to clean the tubes in the future and it also tells you if the water used is good for the tubes or not. Cleaning the tubes help greatly in the efficiency of used chillers.

Refrigerant charge is important in optimizing used chillers’ performance and energy efficiency. Too much of it can cause a carryover which can cause a reduced capacity and excess power consumption among other damages. Not enough supply can also lead to trouble. This is why it is important for the refrigerant charge to be just enough.

Oil is also critical in chiller efficiency. It is important to do an oil analysis once a year. You should also do oil and filter change after a year. Particles in the oil tell you what type of wear problem is happening inside the chiller. The oil level must also be observed closely.

Like any other equipments, regular checkups and maintenance is needed to keep chiller efficiency as high as possible.

How does a air cooled chiller differ from a water cooled chiller?

Industrial chillers are of top priority in most industries and companies worldwide. These chillers help cool the equipments and the environment as well. They help maintain the effectivity of the equipments at hand. Industrial chillers come in different variations and design but still offering the same functionality. They work towards the same purpose but the difference in the way they work help companies choose which one fits the nature of their business.

Industrial chillers can either cool by air or cool by water and they have the same parts. They each have an evaporator, compressor, expansion valve and a condenser. They also have the same functionalities but the difference lies in how they refrigerate fluids which makes a great difference especially for most industries.

An air cooled chiller rejects or gives out heat into the air. They are less efficient when it comes to energy but they are also less expensive to purchase and maintain. This is the reason why air cooled chillers are being widely used in most industries.

A water cooled chiller on the other hand, also gives up heat. However, it gives up heat into another water source instead of into the air. Water cooled chillers are ideal and practical for industries that have cooling plants or a water source ready.

These chillers come in different designs to help industries tend to their needs in the most efficient of ways. Through this, they are given options and can maximize the equipments they have at hand for the improvement of their overall progress.

What are the types of condensers?

We all know that industrial chillers are beneficial and help industries cool the necessary equipments. We all know that they are high-priced items and proper chiller maintenance should be observed if you posses one to maximize its life span. Otherwise, you’re risking of cutting off its efficiency and eventually its life. It is also important to know all that we can about chillers to better equip ourselves.

While other articles are talking about the different types of chillers: from air cooled chillers to water cooled chillers, this article talks about just one part of both types of chiller. Before getting to this particular part, the refrigerant must travel across different tubes and mechanisms that aid in the whole process. After which it ends up in this special place: the condenser.

The condenser is where the refrigerant gives off heat energy into either a water source or air. Most chillers use air cooled or water cooled condensers to aid with this process:

•    Air cooled condenser

An air cooled condenser is a copper tubing coil that has aluminum fins and condenser fans. They are an essential part of a chiller because this is where the refrigerant throws out heat directly into the air.

•    Water cooled condenser

Water cooled condensers have shell and tubes for heat exchangers that have condenser water running through them. The condenser water flow must have the same flow velocity as that of the evaporator.

Industrial chillers or any type of chillers have condensers. They may differ in the process and design but they were created for one purpose only: to remove heat and give that cooling effect needed.

How to choose the chiller that best suits your needs

An industrial chiller is as useful as any other equipment out there. People have benefited greatly from its functionalities and large industries are an example. Industrial or process chillers take away heat from water and transfer it to another which could either be air or water too. This process results in a much cooler environment. These industrial chillers also protect other processing equipment that is prone to destruction when placed in too much heat. It helps companies save lots of money in equipment purchase since they are able to maintain the current one they’ve got.

Types of Chillers:

Air cooled chiller – This type of chiller soaks up heat from process water and then transfers it to air. These types of chillers are best used in places where the heat given off will not be a problem. They require less maintenance and do not use any water pumps or cooling towers.

Water cooled chiller – This type of chiller follows the same cycle as that of the air-cooled chiller but instead of transferring it to air, the heat is transferred to another water source. If the heat given off would be a problem, this chiller is the best choice. However, this chiller needs a cooling pump and condense water pump to prevent mineral buildup.

Portable chiller – This type of chiller can be transferred from one are to another and can be used to cool more than one device.

Industrial chillers are beneficial to us but you need to take into consideration some factors that surround your work area and decide which chiller best suits you.

How to buy chillers and what to consider

Going shopping for chillers is not as easy as it looks. You need to be in the know so you can make the right choice and not end up with something that can only complicate things instead of helping.

When you’re out buying your very first industrial chiller, there are a few things to consider such as materials, components, efficiency and operation. By taking them into consideration, you are assured that you’re not only getting a good chiller but you’re also getting your money’s worth. Let’s take them one by one.

The first factor you need to check out in buying process chillers is the materials used in the production. Stainless steel is the best choice for chillers nowadays.

To avoid future trouble with parts, make sure that the components of your chosen chiller whether it be a water cooled chiller or an air cooled chiller are standard components that are available in other major wholesalers and not just manufacturers.

Of course, industrial chillers are of no use if they can’t deliver efficiency. You have to compare the money spent on the chiller and the money you can save on energy over a long period of time.

Chillers must be user-friendly. The controls must be easy to read and easy to use. This is essential especially to first-time users. Any complications might lead to misuse and destruction of the chiller.

Choose a chiller that have components place for easy access for inspection and replacements if necessary. Small-compact units aren’t that advisable because chiller maintenance tends to be a hassle, having to take the chiller apart for inspection or any other service.

Chillers come with a warranty of up to 5 years for new ones. Check out for how long the warranty is for your chosen chiller before you make it to the cashier.