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--- mywiki:info:aircon [2014/09/11 08:25] – shaoguoh
+++ mywiki:info:aircon [2019/09/15 18:55] (current) – external edit 127.0.0.1
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  Air Conditioning Singapore
-| Reference | [[http://homerepair.about.com/od/heatingcoolingrepair/a/Types-Of-Home-Air-Conditioning-Systems-And-How-They-Work.htm | Types of Home Air Conditioning Systems ]] |
+| Reference | [[http://homerepair.about.com/od/heatingcoolingrepair/a/Types-Of-Home-Air-Conditioning-Systems-And-How-They-Work.htm | Types of Home Air Conditioning Systems ]] | 【【http://residentialairconsg.blogspot.sg/2011/11/what-you-need-to-know-when-installing.html | Aircon Knowledge]] |
+Singapore.
+====== Air Con Terms and Jargons ======
+Before i start, there are some technical terms or jargons used in air conditioning which u all should know abit beforehand.
+BTU = British Thermal Units. This is a unit for cooling capacity. A higher value means higher cooling power. There are 9000btu(10000btu), 12000btu(13000btu), 15000btu(16000btu), 18000btu, 22000btu(20000btu), 24000btu(26000btu) and 30000btu.
+* Some people like to use Hp to define the cooling capacity. Nothing wrong with that but try stick to BTU or kW as both use more commonly in Singapore.
+Outdoor Unit = the big rectangular stuff u placed on air con ledge or mount on a stainless steel bracket. Some people call it 'compressor' but actually the compressor is part of the outdoor unit.
+Indoor Unit or Fan Coil or FCU (fan coil unit) = this 'air con' inside your home.
+Compressor = the main component for your air conditioner. It is mounted inside the outdoor unit.
+Refrigerant = the working fluid for air con. There are R22 and R410A currently in use for residential. People always tends to say 'Gas'...Dun do that!!! Caused it is not always Gas...it is at times LIQUID..!
+Use 'Refrigerant' instead.
+Class 1 & Class O = Fire Propagation Test Standards for insulation. In simple terms, the insulation inability to burn.
+Grade = Actually it should be Gauge. It is an industrial term to describe thickness of metal. In our case, thickness of the copper pipe. Grade 22 is 0.71mm, Grade 23 is 0.61mm and Grade 24 is 0.56mm. This has nothing to do with the chemical content. But generally, a thicker copper is able withstand a higher operating pressure. Surely the manufacturing process also plays a very important part.
+Insulation = the foam or rubberly 'layer' covering the copper pipe. Its function is to prevent heat gain.
+System 2 (or 3 or 4 or 5) = The figure means number of indoor units to 1 outdoor unit. For example, a System 4 will be 4 indoor units to 1 outdoor unit.
++12+18 ( or any other number combinations ) = Using 9+12+18 as an example, it means a System 3 with one 9000btu indoor Unit, one 12000btu indoor Unit and one 18000btu indoor Unit.
+Single Split = this also means System 1. Therefore it will have 1 indoor unit to 1 outdoor unit.
+Non Inverter = the conventional air conditioner or 'fixed speed'.
+Inverter = the more energy efficient and expensive air conditioner or 'variable speed'.
+Manufacturer or Agent = the manufactuers like Daikin, Mitsubishi Electric, Panasonic, etc.
+Dealer = the retailer or installer
+====== R410A refrigerant vs R22 ======
+R410A refrigerant is CFC free (environmental friendly) and has a operating gas pressure of 1.6 times higher than R22 refrigerant. R410A also has a higher condensation rate due to its slightly higher cooling of the refrigerant as compared to R22. On average, 30% of energy can be saved by getting an inverter airconditoner as compared to non-inverter airconditioner provided the airconditioner is being serviced regularly and cooling capacity of the fancoil is not undersize. R22 refrigerant is used in Non-inverter aircon and has a lower operating gas pressure
+====== BTU ======
+BTU is known as british thermal units and is a unit of measurement of thermal energy
+Conversion from Kw to BTU. 1 kW= 3412 BTUs.
+HP stands for Horse power. 1 HP is the power input equivalent to 746 W and can produce approximately 9000 BTUs
+Typically fancoil units are available in 9000 BTUs (2.5 kW) 1 HP, 12000 BTUs (3.5kW) 1.5 HP, 18000 BTUs (5kW) 2 HP and 24000 BTUs (7kW) 2.5 HP. 1 HP = 746 w, 230 V at 50 Hz
+To find out what is the sizing of the aircon required for the area you can take area size in square feet multiply by 65 or area size in square meters multiply by 650.
+Example 140 square feet area size will require 140 x 65 =9100 BTUs
+In this case you can select  9000 BTUs for the room as there will be furniture like built in cabinet or wardrobe occupying the space.
+| Flat Type | Rooms BTUs | Living Room/Hall BTUs |
+| 3-room | 9000 x 2 | 12000  |
+| 4-room | 9000 x 3 | 18000 |
+| 5-room | 12000 for Master bedroom; 9000 for the rest of the rooms  | 24000 |
+| Executive Apartment/Maisonette | 12000 for Master bedroom 9000 for the rest of the rooms | 24000 |
+====== How many condensers can one HDB flat install? ======
+It depends on the electrical loading of the flat. Flats with 40 Amps main switch and flats upgraded
+under Main Upgrading Programme (MUP)
+====== 空调分类 ======
+{{:mywiki:info:portable_aircon.jpg?100|}} 根据外形不同，空调也被分为
+  * 中央空调：分体式空调
+  * 柜式空调：分体式空调
+  * 挂壁式空调：分体式空调
+  * 窗式空调：一体式空调
+  * 移动空调：一体式空调
+分体式空调的特点是压缩机或者制冷设备和房间内的空调出风口分离，而一体式空调顾名思义，就是压缩机部分和出风口处连为一体。
+一体式空调相对分体式来说，造价低、安装容易，也不会出现制冷剂泄漏的事情，看起来是比较不错。但是噪声确是一体机不能解决的问题，因为是一体设计，无论怎么样也不能很好的分割压缩机和最后吹风部分，使用的时候也就不能控制噪声和震动问题。由于很多朋友都在睡觉的时候使用空调，所以现在一体机基本上在市场上已经见不到了。
 ====== How To Select Portable Aircon's? ======
-Portable air-conditioners are not as effective as a window unit.
+Portable air-conditioners are **not as effective as** a window unit. They are **a bit noisier** than other types of units and can typically cool rooms under 500 SF
 No doubt, buying the right kind of air-conditioning unit can still make a difference in the temperature of your room.
 Below are the features that would aid in getting the right portable room air conditioner for your specific purposes:
-) Match BTU to Room Size
+===== 1) Match BTU to Room Size =====
 Remember that you need more BTUs in a portable air conditioner than you would in a window unit for the same size room.
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 Next >> Cleaning Your Portable Aircon
+===== What is the best aircon brand in Singapore? =====
+. Daikin is a leading aircon specialist in Singapore that provides cool comfort for residential and commercial purposes. It has been in Singapore since 1968. Daikin inverter aircon units are designed to excel in quality and performance and feature the latest technological innovations. They are user friendly in nature and offer high comfort levels and energy saving operation for any living space.
+. Mitsubishi aircons also feature latest innovative technologies and energy saving and silencing technologies in order to provide optimum performance and room comfort control. Their aircon units are touted to enrich your lifestyle and lessen the environmental impact.
+. Panasonic: This reputed company offers a wide array of aircon for all your needs. This brand implements some cool features like Econavi and Autocomfort, where almost anything can be set including the horizontal louvers that provide you the freedom to set what best suits your comfort level.
+MITSUBISHI SYS 3 - INVERTER
+    MXY3A28VA
+XMSYGE10VA
+XMSYGE18VA
+Gaincity: S$3,059.00
+http://www.gaincity.com/product/mitsubishi-sys-3-inverter-1
+Curts: 3499/3589