How Does an Air Conditioner Work?

During the hottest months in Singapore, homes and offices will be relying more on the cooling power of the airconditioning systems but the increased and continuous use will also expose the units to some of the common issues. Knowing how the air conditioner works, however, will help you determine whether the system needs to be calibrated by an aircon maintenance crew or if there are minor problems that need to be addressed soon to avoid major aircon repair projects.

Let’s break down the processes that involve the absorption and casting out of heat and the production of cool air.

Parts of an Air Conditioner

There are five basic components of an air conditioner. When your aircon repair crew from Singapore checks on your unit, the following parts are inspected first.

  • Thermostat – This regulates the temperature of the air blown out of the air conditioner as well as the heat flowing inside the unit. Regular aircon maintenance is needed to make sure that the thermostat is calibrated because it’s prone to a lot of problems especially if it’s an automatic or digital type thermostat.
  • Evaporator – This unit is linked with the condenser through a pipe and is responsible for transforming high-pressure gas into low-pressure liquid. The refrigerant will take the heat from the air and then cool it off, so that when the fluid come out as gas form from the evaporator, the gas is compressed in the compressor.
  • Compressor – The aircon maintenance technician from Singapore will help review cold air ventilation systems by doing a thorough aircon servicing and checking of parts, including the compressor. This is probably the most important part to check when doing an hvac preventive maintenance, because this is where the gas is transformed into liquid during the cooling process. The low-pressure gas is converted into high-pressure and energized gas. The refrigerant, the liquid form then comes out of the compressor and transported to the condenser.
  • Condenser Coil – The fan in the condenser coil is responsible for cooling down the high-pressure gas and converting it into liquid form. After this, the liquid is transported to the evaporator. This part of the aircon conditioner system should get regular aircon servicing because most aircon type place this part outside the house or the room. It suffers from wear and tear because it is constantly exposed to the elements. Regular aircon maintenance will prevent the fan from wearing out or getting clogged, too.
  • Blowing Unit and Air Handler – The air handler draws the warm air from the room while the blowing unit distributes the cool air. In commercial buildings, an extensive duct system is needed to ensure that all the areas get the same quality of cool air. Regular aircon servicing of a complex air conditioner system is crucial to avoid major aircon repair expenses.

How the Aircon Cools the Room

Regardless of the type of aircon you have, they allserve the same purpose of regulating cool air into the room. However, for offices and large spaces in Singapore with multiple rooms, it is recommended to build in new central AC system. A shared aircon system is much moreefficient than stand-alone units for every room. Centralized aircon cools allspaces at once while running in a single system.

To better understand the process, let’s divide the process into two parts based on the location of the aircon parts; indoor and outdoor.

The indoor aircon unit includes the evaporator and the coil box which are responsible for the evaporation and absorption of heat. The cooling fluid is located in the coil piping, allowing the refrigerant and water to turn into vapor as the unit absorbs the heat.

The outdoor unit on the other hand disperses the heat collected in the room or building, that is why if you pass by some large commercial and industrial buildings, there are sections with large fans that blow off warm air. The fan, compressor, and condenser coil are located in the outer unit.

From the indoor unit, the refrigerant is transferred to the outdoor coil and compressor. So, what happens to the used refrigerant? The compressor recycles the refrigerant so that it can keep absorbing and then cooling the air from the room. The refrigerant is compressed so that it becomes high-pressured and then moves into the outdoor coil or condenser so that when it reaches the fan, the warm air is cooled in the condenser coil.

From this process, it would be safe to assume that the air conditioning process is not about cooling the air, but more about collecting warm air and dispersing it outside of the room or building. The process begins when the thermostat detects that the temperature of the room is different from the information you feed it when you change the temperature. It will continue to monitor the temperature in the room to maintain the coolness.

To simplify the process, remember that the warm air passer first throughthe condenser coil, then the expansion valve, next the evaporator coil wherethe air cools, and then the compressor. The process then repeats again and again until there is no warm air that can be cooled.

This constant process therefore exposes the unit to a lot of problems, that is why regular aircon servicing is important if you don’t want your office operations to be interrupted by a faulty system. Some of the common problems in air conditioner include leaks, low refrigerant levels, dirty filter, electric control issues, sensor problems, and dirty or clogged drains.

Energy-Efficient and Earth-Friendly Aircon

Like most electronic appliances and gadgets, the air conditioner system uses a lot of energy that is why commercial buildings consume more energy because they have larger and more complex aircon systems. To reduce your electric bills and to prevent other common aircon problems or if your aircon system is already ten years old or older, your aircon technician in Singapore might recommend that you choose energy-efficient models which up to 50% less energy than the older models. However, the same cooling efficiency is guaranteed, plus there are tons of new features that you can also enjoy. Regular aircon servicing will also guarantee that your air conditioning system will function efficiently and optimally all the time.

7 Crucial Questions You Absolutely Need to Ask Before Hiring a P.I.

For many people, just the thought of having to hire a PI to confirm your suspicions seems quite uncomfortable, off-setting, and to some extent, even embarrassing. This is understandable. In many cases, this would mean having to trust complete strangers with our personal information, our problems, and our lives.

But there’s always more to private investigation than just having to open up their personal lives. In fact, the main reason why people often go to PI’s is not just because they have no other choice, but in face because they are trained professionals.

Before you choose to hire a private investigator in Singapore, here are the questions you need to ask:

1. What are the types of work that your agency/firm does?
A private investigator will often do/specialize in a wide variety of work related to surveillance and data gathering, such as the following:

• Spousal surveillance (for possible infidelity or philandering)
• Finding or locating missing persons/property
• Financial fraud
• Corporate matters
• General investigation for civil or criminal matters

The field of private investigation is really varied and diverse, which is why it helps to inquire about both their expertise and level of experience in specific case types and fields. If the PI is experienced in cases that are similar to yours, you can be confident in the quality of their services.

You can even expect the PI firm to have specialist agents who are exceptional at working certain types of cases, and you will often be referred to the agent who will be handling your case.

2. Is your firm both licensed and insured?
This is perhaps a no-brainer question, but you should still ask this anyway. All private investigator in Singapore, under the Private Security Industry Act, are required to be licensed (and undergo intensive legal training) before they can operate legally and conduct their business as a private investigation agency.

Even individual private detectives need to be both certified and insured before they can operate in Singapore. The good news is that legitimate agencies and individuals will tell you right from the start.

3. Do you have both male and female investigators?
Because certain clients will often ask for agents of a certain sex type to work their particular case, large firms or investigation agencies in Singapore will often employ both male and female PI’s to work on them.

The reason why this is a question you should ask is because there is a good chance that you may feel more comfortable if certain types of people were to be the ones working on your case, rather than others, which is an understandable personal preference given the circumstances.

4. How can you ensure that my case will be confidential?
A PI, whether working solo or for an agency, will often guarantee case confidentiality. Asking how they achieve this will give you an idea on whether you should hire the PI for your case – and the best indicator for this is through a signed legal document.

5. What methods do you use to conduct the investigation?
Catching cheating partners are some of the most common cases that PI’s work on, which is something they should be able to do using legal means, and strictly through legal means. They are often required to go through intensive training to make sure they follow proper procedure.

This also means that private investigator services are not above the law, and are working without the tools and methods that traditional law enforcement does to obtain information more easily. This affects how they conduct their investigations.

6. How can I stay in touch during the investigation?
It’s especially important that you don’t want to let any information leak, which is why you need to decide on how you can stay in touch as early as possible. This can either be in the form of a daily email, a telephone call, or a weekly report if the case is particularly large.

When asking about staying updated during the investigation process, you should keep in mind that there are certain instances when you don’t always get a regular update on the case. While most cases such as trying to catch cheating spouse can be updated regularly, there are times that constant updates are simply impossible due to the nature of the investigation.

There is good news, however. Most professional PI agencies and firms will have agents that will do their best to update you as regularly as possible on any developments on the case, whether your suspicions are true or not.

As a back-up question, you should also ask the investigator as to what their standard procedure is should they be compromised. Whether they have a back-up story or ceasing surveillance, it’s important that you know the measures that they take to make sure their clients stay anonymous.

7. How willing are you to testify in court?
You can expect a legitimate private investigator to be experienced in court hearings and proceedings as a professional witness, as many private investigators will do whether they are working solo or as part of a larger firm.
But with that said, it’s important that you still ask this of the PI just to be safe. If the PI won’t testify, your next best course of action is to find one who will testify in a court of law.

(Disclaimer: this list is compiled in no particular order.)