How Often Should I Clean Condenser Coils
If you live in a hot climate in that location is nothing improve than keeping cool using an air conditioning system. But how exactly practise they work?
Here nosotros attempt to answer this very question and explore what types of Air conditioning systems exist. As Heating, Ventilation and Ac (HVAC) is a very circuitous engineering science field, we should notation that this is not intended to be a comprehensive guide and should be considered as a brief overview.
RELATED: HOW PEOPLE KEPT COOL BEFORE AIR CONDITIONERS
How does an air conditioner work?
In brusque, they work just like your average kitchen refrigerator. The technology behind both ac systems and fridges is exactly the same - the refrigeration cycle.
Systems that take reward of this cycle use special chemicals called refrigerants (water in some systems) to absorb and/or release energy to either oestrus or cool some air. When these chemicals are compressed by the AC unit's compressor, the refrigerant changes state from gas to liquid and releases heat at the condenser.
When cooling a infinite, this process occurs outside the space in question. This high pressure, now absurd air is pumped to the indoor unit of measurement and expanded back to gas using the system'due south expansion valve.
This, every bit the name suggests, causes the refrigerant liquid to expand back into gas form. As the refrigerant expands it "sucks" in heat and causes the air to cool in the space in question at the AC arrangement's evaporator.
This now-expanded and "hot" gas are further transported to the system's compressor and the cycle begins all once more.
To visualize this, recollect of a sponge as the refrigerant and water every bit "heat". When you lot squeeze a sodden sponge (the compressor and condenser), water is pushed out and heat is released in our analogy. When you permit get of the sponge (the expansion valve and evaporator) it expands and can then absorb more than water or rut in our illustration.
The basic underpinning of this cycle is the scientific principles of Thermodynamics, Boyle's Law, Charles' Law, and Guy-Lussac's Laws.
Primarily the fact "a liquid expanding into a gas extracts or pulls heat from its surround." - Goodman Air Workout, and Heating.
In this sense, Air-conditioning and fridges work past "moving" or "pumping" energy from one location to another. In nigh cases, AC units volition transfer the "rut" from your room, role or habitation, and dump it into the air outside your house or role.
This cycle is reversible and tin can be used to besides rut your room, or your unabridged home, during colder months just this function is normally reserved for systems called heat pumps.
The main difference betwixt a fridge and an Air-conditioning unit is that the unit tends to be split into two detached parts; the outside condenser (or chiller) unit and the indoor unit of measurement.
Refrigerators, on the other hand, are one self-contained unit (though some Air-conditioning units tin also exist).
Any rut removed from its interior is dumped into the same room at the rear of the unit. This is the chief reason you could never really utilize a fridge as a DIY AC unit; unless you cut a hole in the wall behind information technology, of course.
You lot can test this by touching (be conscientious, it can get very hot) the back of the fridge when its in operation. It should feel warm, or hot, to the touch on.
What different types of ac systems are there?
AC units come in many shapes and sizes today, ranging from massive ducted systems in offices and industrial buildings to smaller domestic AC systems that you are probably more than familiar with.
Some of the larger installations take very large outdoor chiller units that can be h2o or air-cooled or, in older systems, cooling towers. These are linked past insulated pipes to pump refrigerant to temper the air within a large, or set up of large, packaged units called air treatment units (AHU's).
These systems can be very complex with heating elements and humidifiers, and filters to control very precisely the temperature and air quality for the areas in a building they serve. They too tend to come up with complex heat recovery systems to decrease the amount of electricity (or gas) needed to heat/cool air within the system.
They come in ii main forms; Constant Air Volume (CAV) and Variable Air Volume (VAV), which defines the extent to which airflow is controlled around the system's ductwork.
These can likewise be controlled by very sophisticated systems of software, sensors, and actuators called Building Management Systems (BMS).
These big HVAC systems "suck" in fresh outdoor air and rut/cool it as necessary before transporting information technology through ductwork to the areas required. These systems can also accept terminal reheat units, or fan coils, to farther refine the tempering of supplied air to an area.
More modernistic installations do away with centralized AHU's in favor of fan coil systems, or "indoor units" that are directly linked to one or more "outdoor" Air conditioning units. These are termed Variable Refrigeration Menstruation (VRF) systems which temper the air directly at the point of use.
Only most people are used to split- or multi-carve up air source estrus pumps (ASHP) or single room cooling AC units. These are much more akin to refrigerators and are the systems most often installed in domestic bounds.
But information technology should also be noted that diverse other systems exist, using the same principle, like ground source heat pumps (GSHP). These use the footing as a "dumping basis", or source of estrus, instead of air or a source of estrus. Both ASHPs and GSHPs can likewise connect to regular radiator systems or underfloor heating systems in identify of a regular gas boiler with some modification.
How does air conditioning piece of work in cars?
Put simply, AC in cars works exactly the same as any other Ac unit. The simply difference being they need to be quite compact in guild to fit inside the machine.
The chiller part of the system (with the expansion valve and evaporator) is commonly mounted backside the motorcar's dashboard. The other business end of the system (the compressor and condenser) tends to be sited well-nigh the car's radiator grille - - this is where fresh air is diddled in as you drive along).
Both parts are connected by a circuit of pipes that laissez passer the refrigerant between the units when in functioning. Different larger units used in buildings, the unit itself in cars tend to be powered by the car'southward crankshaft, in other words, it is powered by the engine.
These systems ordinarily also come with rut and dehumidifiers to temper the air as needed. Merely like building AC systems, a automobile's AC unit will convert the coolant between gas and liquid, high and low pressure and high and depression temperature as required.
Is it cheaper to leave the air conditioner on all twenty-four hour period?
Put only, no. The reason for this is that past leaving an AC system all day will:
1. Employ energy unnecessarily if you are not at home or rooms/zones are non in employ.
2. Running the system puts wear and tear on information technology. This shortens the lifespan of it.
You should also ensure windows are airtight, or draught-proofing is installed when the AC is in operation. You don't want to "air condition" the world after all.
Y'all should also ensure that you make use of shading devices (similar an awning or strategically planted trees) externally to reduce "solar gain" or heating of your home passively from sunlight.
Other measures include improving the insulation of your dwelling house, keeping Air conditioning systems well maintained (specially filters), and using ceiling fans to improve air mixing internally (i.e. preventing stratification of hot air near the ceiling or vice versa).
If you are really concerned most your free energy bills related to your Ac systems, y'all might desire to make your AC system "smarter". Making use of domestic BMS, smart sensors (thermostats and weather bounty), zone-control and other energy-efficient measures, you can drastically improve the efficiency and reduce the cost of your Ac systems.
You should also make use of "free" cooling and heating solutions past considering using nature to help you lot. Expert employ of natural ventilation to either absurd down or estrus your home will dramatically cut the cost of heating/cooling related energy utilisation by turning it off.
But this is only possible if the air quality exterior your domicile allows for this. Living in a big city with "muddied air", for example, might restrict your power to make utilise of this free course of heating and cooling.
How does contrary cycle air conditioning work?
Reverse bike air conditioning systems, or rut pumps as they are more than commonly known, work much the same as any other form of Ac unit. The exception being that they are specifically designed to exist able to reverse the cycle at will.
Similar other Air-conditioning systems, they can also filter and dehumidify the air as needed.
Source: https://interestingengineering.com/just-how-does-an-air-conditioning-system-work
Posted by: whitealhas1975.blogspot.com
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