Welcome Guest ( Log In | Register )

Outline · [ Standard ] · Linear+

 Aircon Discussion V3, Home Appliance

views
     
Richard
post May 11 2016, 04:43 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(TXSim @ May 11 2016, 04:37 PM)
Hisense not good. Not recommended by shop.
*
Did the shop give reason why is it not good?

not cool.. not high tech.. not good looking.. name not sound good?
Richard
post May 24 2016, 09:33 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(devilywan88 @ May 24 2016, 08:17 PM)
guys can recommend me suitable aircon for living room ( 16 ft x 11 ft).

thanks
*

A) multiply 6 btu/hr to length x width x height,
b) add 600 btu/hr for each person,
c) add 25% for each side of glass walls..

Total = Btu/hr cooling required.. divide 9,000 Btu/hr for hp, 12,000 for tons cooling capacity..

yours at least 11,000 Btu/hr..
Richard
post May 31 2016, 11:40 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(Yveatel @ May 31 2016, 04:50 PM)
Sorry, I am not expert in electric. But how come 2hp will consume lower electricity compare to 1hp?
*
For the same type motor and run hours a 2hp cannot consume lower electricity compared to 1HP..

It makes no sense..
Richard
post May 31 2016, 11:56 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(lhgoon @ May 31 2016, 12:53 PM)
Get 1 hp if u turn it on for just an hour or so. For long cooling hours, get 2 hp or else, your AC will die very fast and your electricity bill will shoot sky high.

Just my 2 cents.

If you want to save, why not think about used AC? I bought a Panasonic used AC 1.5hp non inverter for RM 800. Condition is like new. Previous owner used for only 3 years.
*
I did some maths on running an inverter 1.5hp vs a non inverter..

Say i use rm50 to run my 1.5hp inverter aircon a month this saves me 47% vs a non-inverter thats savings rm23.50/month

Returns for rm800/rm23.5 => 34 months about 3 years which is probably why the previous owner sold you his unit..

hahaha..
Richard
post Jun 1 2016, 12:06 AM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(weng-aircon @ May 31 2016, 06:40 PM)
Consult your air con man ask them to check the piping at your condo.. they will suggest what HP to put.
*
Dude .. talk some sense..

You calculate cooling load and then size what hp air-con to use.. You need to know radiant, convection, conductive and sensible heating sources..

check piping then suggest what HP ?? *deleted*

This post has been edited by Richard: Jun 1 2016, 10:42 PM
Richard
post Jun 1 2016, 01:55 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(PeowYong @ Jun 1 2016, 10:58 AM)
I think it make some sense, if the room is small, the 2HP aircon won't run on full load all the time as compared to 1HP aircon, hence, it might consume lower electricity compared to 1HP.
*
What do you mean full load ?
A 2hp aircon only has one motor, it is either on or off .. We are not talking multiple motor configuration aircon here..

This is domestic residential split unit aircon..One 2hp motor driven compressor..
It's a 1.5kW motor... less running amps than your home instant 3kw water heater..

The issue is on the motors 6x-10x starting amps which a larger motor will always consume more power due to the larger starting torque than a smaller motor..

You also have no idea what you are talking about ..


Richard
post Jun 1 2016, 02:11 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(lhgoon @ Jun 1 2016, 01:01 PM)
Running a 1hp ac in a living room and set the temp to 24C. The compressor will run from the time u turn it on until you turn it off because the AC is undersize.

Running a 2hp ac in a living room and set the temp to 24C. The compressor will run from the time u turn it on and the compressor will turn off once the temp of 24C is reached and turn on again once the temp rises. 2 hp AC will reach the set temp of 24C easier.

*
Before you explain further go speak to an electrical trained person preferable an electrical engineer and ask him about motor starting amps..

Then come back and repeat how a 2hp costs less to run than a 1hp..

If you still believe that then you're either a priest or a magician..


Richard
post Jun 1 2016, 10:46 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(weng-aircon @ Jun 1 2016, 06:13 PM)
Richard. I did not calculate any cooling load. Of course I can if I wanna calculate. As previous convo people ask me about what HP to fit for the EXISTING piping. Every piping size has it fixed HP to install.

Mind your rude words here.
*
ok.. ok.. Sorry didn't mean it.. Already edited out..

I wasn't aware you were referring to existing piping..

notworthy.gif notworthy.gif notworthy.gif
Richard
post Jan 10 2017, 12:28 AM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(alexander3133 @ Jan 9 2017, 09:06 PM)
One of my room with not so high ceiling, going to have a loft bed soon.
So with normal aircond, the air flow won't able to reach the bed on upper deck, therefore thinking about Sky series to solve this problem.
But seeing Sky series have complain now, not sure if I should proceed with Sky series.
*
Seeing that you use an air conditioner to remove heat (by condensing water from air) ..

wouldn't it be a simple solution just to add a table/wall fan to circulate the air within the room?


This post has been edited by Richard: Jan 10 2017, 12:29 AM
Richard
post Feb 7 2017, 06:27 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(spreeeee @ Feb 7 2017, 12:01 PM)
both brand/model is ok, but i still prefer basic unit over inverter..
*
I would refer you to ST's http://www.slideshare.net/ZAINIABDULWAHAB/...-malaysia-2010..

Directly googling for references:

For example a Gree Inverter unit http://www.greemalaysia.com.my/help/info/eer.htm @ 1597kWh annually

TNB electricity https://www.tnb.com.my/residential/pricing-tariffs/

Operating cost
=========

Inverter Annually = 1597 x 0.51 = RM 814.50

An inverter saves 30% compared to a non inverter thus

Non inverter Annually = RM 1,163.60

Conclusion
========

Based on the above data the savings @ 30% is RM 349.10 annually.

The initial price difference (RM500) between an inverter to a non-inverter in running cost is recovered within a 18 months ..

If you are careful on how you do the maintenance (maybe vacuuming instead of water wash)..

meaning you don't pressure wash the inverter board while cleaning the condenser coil ..

Using the above data, cost savings alone you can have buy a new non-inverter aircon every 4-5 years.
Richard
post Feb 7 2017, 10:05 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(spreeeee @ Feb 7 2017, 09:29 PM)
The first link not able to open. Anyway why I chose basic over all other techie AC (be it inverter or plasma or ioniser or etc etc etc) is basic unit barely problem free compare to others, just based on personal experience gathered.. I could be wrong, but I still only go for basic ones
*
Ya.. that link a bit strange but you can google up the subject and follow it.. basically a slide presentation ..

I used it to make a point that Inverter's are basically here to stay with a real push from the Authorities promoting it..

Just providing a picture in RM from the information available on the net and a reference in case I need it myself..

Cheers..

QUOTE(wyh @ Feb 7 2017, 09:29 PM)
Thanks!

Hisense should be least expensive in the market, around 990 incl installation for 1hp.
*
Yes.. It makes sense if you are concerned on the initial cost..

Cheers to you too..
Richard
post Feb 9 2017, 06:20 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(zr125 @ Feb 9 2017, 05:56 PM)
can suggest aircond for 3mx8.5m room size? how many hp do i need?
*
rule of thumb 60 btu/ft2 internal room no windows, 2 persons..
Richard
post Feb 9 2017, 09:56 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(zr125 @ Feb 9 2017, 07:32 PM)
so 1.5hp at least?
*
You do the maths, add 600 btu/hr cooling per additional person after the first 2 compensate for cooling losses to open passageways..

The room volume has to be reasonably air tight then you roughly layout the cross air delivery/return (no dead areas), maintenance aspects and its done..
Richard
post Feb 20 2017, 07:13 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(Ice BabY @ Feb 20 2017, 05:27 PM)
I will put my aircond in the center, can you tell if the installer install cooper pipe install correctly?

user posted image

user posted image
*
You see that drawing on the wall?

Make sure there's enough flex in the refrigerant piping (say 2" out) to move cooling coil when you need to service the roller fan..

If connected without any flex the joints are stressed and there's a reliability problem with later leakage and difficulty in service/maintenance..

Take my points and stress it to your aircon installer so he'll understand and act accordingly..
Richard
post Feb 21 2017, 01:24 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(Ice BabY @ Feb 21 2017, 11:50 AM)
So i need to ask the installer to install flex joint? The drawing on the wall actually is for plaster ceiling. Lol.
*
ok..

Never mind then..

I don't think he'll be able to do much as once he brazes on the connection fitting (to mate with the fan coil) ..

The flex isn't a standard practice, his installation looks standard practice and what is normally done..

Maybe just have a talk with him and ask him to consider the service/maintenance aspect..

To keep him on his toes that you're paying attention to what he's doing..
Richard
post Feb 21 2017, 03:49 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(Battlefield1942 @ Feb 21 2017, 02:31 PM)
Just enough to remove the heat and humid from the room. We are the type afraid of cold but without air-con, the room is stuffy and hot. We use to cool down two room using the hitachi 1hp as their air flow is strong and change to 1.5hp as 1.0 that time do not have strong air flow as hitachi. After I install power monitor to track it usage, come to know most of the time. We only operate it at 26 degree during day time and 27-28 at night. 28 degree the compressor will stop and idle and this cycle repeat again and again. Air con only work hard when go beyond 25 degree and. We close the windows coz the highway is just 30 feet away from the windows and very noisy till midnight. Just check out the Mitsubishi super deluxe 1hp with 17 EER rating (the highest) and their price with installation come up to 38xx! and their 1.5 hp come up to 43xx! I think will stick back to pana econavic inverter after checking out the new type of air-con pricing. Thanks.
*
If you're confirm the compressor start/stop all the time then I would think an inverter unit suits your preference as an inverter controlled compressor works based on the fluctuating heat load..

You'd probably notice a difference in your electricity bill..

Do provide feedback to confirm results ..
Richard
post Feb 21 2017, 05:42 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(spreeeee @ Feb 21 2017, 05:02 PM)
at least 2.0
*
That would be a lot undersized, you're talking about a 20'x20' and 20'x10' area populated with more than 2 persons and hot food..

Use the 60btu/ft2 and 600 btu/person (additional of 2 person in the initial estimate per room) ..

9,000 btu/hr cooling capacity to 1 HP.. It's a good rule of thumb..
Richard
post Feb 21 2017, 09:22 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(arju @ Feb 21 2017, 08:12 PM)
So 2.5 living and 1.5 dining? electric city costly ya

or go for 3.5HP single unit? but unable to find 3.5HP split unit inverter

Which configuration better.
If not will install fan on dining and 2.5HP on living.
*
Yes.. That would be the correct total capacity but not necessarily a single large unit..

It is better to have multiple small units for better cost efficiency, air distribution and close off areas not in use..

Your consideration would be to remove the heat and air distribution so as to provide a suitable comfort level..

The aim is low noise with acceptable cooling..

If you insist on a single unit and don't mind using ducting i think you can get an aircond contractor to quote you a single fan coil with multiple compressor option..

Similar to what is used in the department stores..

You will need to contact a specialist air conditioning contractor.. The yellow pages should be a good start or friends in the building construction line..

Otherwise just use multiple small split unit aircons concentrating mostly on the comfort zones..

Your idea is good.. only add another unit if you find it necessary..

This post has been edited by Richard: Feb 21 2017, 09:24 PM
Richard
post Feb 22 2017, 10:37 AM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(spreeeee @ Feb 22 2017, 09:22 AM)
sorry typed too fast.. should be 2.0hp x2units
*
Yeah.. I know.. happens to all of us..

On the same note, the 2HP* = 18,000btu/hr is called cooling capacity is actually the amount of thermal heat that is removed (by condensing vapour to liquid) ..

which is why the condensate drain pan needs to be regularly cleaned..

Or the aircon leaks water...

Edit* Not to be confused with the electrical power of the compressor motor .. They are 2 different animals..

This post has been edited by Richard: Feb 22 2017, 11:06 AM
Richard
post May 18 2017, 11:17 PM

Regular
******
Senior Member
1,083 posts

Joined: Jan 2003
From: Kota Kinabalu


QUOTE(VeeJay @ May 17 2017, 04:52 PM)
lol...exactly...i even have unknown brand that has been running for last 19 yrs!

I dont understand the notion of aircon doesnt last
*
The main point is the cost..

The newer inverter aircons run a lot lower costs and you gain the ROI (returns on Investment) within the number of running hours as compared to a conventional aircon..

So if you are paying the monthly bill it makes sense to have a cheaper running unit.. like an owner or tenant who's paying the monthly electricity bill..

On the other hand if you are the landlord or the developer you will buy a cheaper initial cost unit..

As previously worked out an inverter can get back its cost difference within 2 to 3 years of its run time and saves you money then after compared to the non-inverter..

3 Pages < 1 2 3 >Top
 

Change to:
| Lo-Fi Version
0.1178sec    0.95    7 queries    GZIP Disabled
Time is now: 2nd December 2025 - 06:15 PM