Does the thickness of insulation on the cooling pipe of an air contioner make a difference to preventing mould and condensation


Insulation will degrade over time. However, we're talking about decades, not months or even a few years. Even blown fiber or cellulose insulation should provide a good R-value for as long as the house is structurally sound; if you need to vacuum out and re-blow or re-lay insulation, chances are the house needs a LOT more work than that.

What is probably happening is exactly what BMitch said; keeping a place warm in the winter is easier than keeping it cool in summer. All the external heat sources such as solar gain that help you out in winter work against you in summer. Heat is also easy to come by; everything in your house that consumes electricity, natural gas, or food produces heat, by the second law of thermodynamics (no system in the universe can operate at 100% efficiency). Taking heat out of air is harder, because those same laws are now working counter to your goal, adding heat back in even to the system that is providing the cooling.

I'm from Texas, so I know...

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I agree with Daniel Vaz. Interesting question. I think there may also be a critical thickness associated with the cube, IF you keep in mind that the edges and corners are where most the the heat wil be lost to conduction.

Assume you are using flat insulation. To control loss from the edges and corners of this meter cube, the flat sheets must be larger than 1m by 1m, and their edges cut at 45 degrees for a snug fit. This creates a larger surface area for the insulated cube than the 6 sq m surface area of the cube itself. Hence, the potential for more convection than conduction loss.

Or put another way, if one does not overlap the flat insulation at the edges and the corners, then simply adding 1 sq m sheets of thicker and thicker insulation will show rapidly diminishing returns. Much more rapidly diminishing returns than if optimal thickness were only a matter of added cost of insulation.

(Notice I didn't yet derive the critical thickness...

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An air conditioner accomplishes several different tasks at the same time, drawing hot air from a house, running it through cooling coils, expelling the heat outdoors and returning freshened air into the house.
This requires several different appliances working together in one system: Fans are needed to take air in and push air back out once it is purified, systems are needed to draw moisture from the air so it doesn't harm the internal cooling mechanism, delicate coils are needed to draw heat away from the air and release it outdoors, and pipes and drainage systems must be in place to properly siphon away extra materials. Over time, air conditioners have become largely self-operating and efficient, but problems can still...

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Scientific Reason

The drink will lose its heat because of four occurrences; conduction,
convection, radiation and evaporation.

In the liquid convection will happen. This happens when a liquid is
heated up. When this occurs the particles within the liquid acquire
more energy and start to move around vigorously. The heated particles
become more spaced out; the distance between them expands. Because the
liquid has expanded, this means that it now has a larger volume. If we
apply this to the formula density = mass/volume we can see that the
warmer part of the liquid will now be less dense than the rest of the
liquid. This results in the 'less dense' liquid rising. The colder
liquid then replaces it and now there is a convection current; warmer,
less dense particles rise, then cool and fall back down again where
they become warmer etc.

The fact that there will...

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Condensation is a common problem in many peoples' homes which can cause breathing difficulties, damage properties, reduce the temperature of a home and increase energy costs. Here then we will look at the causes of condensation and what can be done about it.

Condensation happens when the water vapor that is in the air in a house condenses onto cold surfaces. This can happen at any time of year and it can be seen in the form of misting or small droplets of water on windows or walls, ceilings, concrete floors, tiles and toilet cisterns. The appearance of any condensation or of mould is a clear sign that the building that it appears in is not adequately heated and or ventilated.

A wall could be cold enough to attract condensation for a range of reasons:

1. Walls at the back of an extension in older homes might be more exposed and thus colder.

2. Walls might be only made from 4 inch thick brick, particularly in older external toilets or...

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1. Thermal Insulation Types:

Based on the functional requirements, the Insulation Material is classified into 2 types as below

Hot Insulation:

Insulation used on hot surfaces for the purposes of Heat Conservation or for the purpose of Personal Protection.

Following material are typically used as Hot Insulating Material

Notes: 1) Thermal Conductivity at 50 OC

Cold Insulation:

Insulation Used on cold surface for the purpose of Cold Conservation or for the purpose of avoiding Condensation.

Following Materials are typically used as Cold Insulating Materials

Notes: 1) Thermal conductivity at 0 OC.

2. Thermal Insulation System

Insulating Material:

Normally the Insulating Materials are available in unbonded mats and bonded or foamed preformed Pipe Sections/ Slabs to suit various applications. Polyurethane Foam and Expanded Perlite Foam can also used by in-situ foaming.


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