Cool-It Air Conditioning & Heating | A/C Repair, Design, & Installation | Houston, TX

My son has a house with no ducts, he went with a unit which looks like a dehumidifier only larger. You set it in the area you want to cool and you can run a small flexible duct to a window to expel the hot air, humidity and noise to the outside. This is very quick and easy to install. He used it this way the first year and then set it in a different location and permanently installed a duct similar to a dryer vent( thru thre wall). Works great. Do not know the brand, but he did buy it off ebay, I have seen them at the local farm supply. This requires no hook up of line set or charging, very simple fast installation.

ICE Buildup on indoor coil. Heat pump. OK. From a PRO. Some simple things.

#1 You can check your filters. Lack of airflow is one cause of ice up.

#2 Low Charge of refrigerant. This is something you cannot check. If it is low on refrigerant, then you have a leak. Contrary to what some say, "freon" just doesn't disappear.

#3 You are trying to run your home below a temperature that your unit is capable of obtaining.

Simple answer - Call your local HVAC contractor. Not Billie Bob's heating and lawn care. Pay the $100 for a service call and ask questions, if you don't understand what they are telling you, let them know.

Don't run your system in this condition, you can burn up your compressor. then it is $$$$$$$, I love those calls.

Friction being used

1) Walking: You could not walk without the friction between your shoes and the ground. As you try to step forward, you push your foot backward. Friction holds your shoe to the ground, allowing you to walk. Consider how difficult it is to walk on slippery ice, where there is little friction.

2) Writing: Writing with a pencil requires friction. You could not hold a pencil in your hand without friction. It would slip out when you tried to hold it to write. The graphite pencil led would not make a mark on the paper without friction.

A pencil eraser uses friction to rub off mistakes written in pencil lead. Rubbing the eraser on the lead wears out the eraser due to friction, while the particles worn off gather up the pencil lead from the paper.

3) Driving a Car: Your car would not start moving if it wasn't for the friction of the tires against the street. With no friction, the tires would just spin. Likewise, you could not stop without the friction of the brakes and the tires.

4) Fire: In the woods we rub two sticks together to make a fire.

5.) Friction Welding: Friction welding is a versatile process, meaning it is suitable for producing a wide variety of part shapes, materials and weld sizes. Applications typically friction welded include hydraulic piston rods and cylinders, aircraft and aerospace components, cutting tools and drill pipes. Using friction allows # High precision, automatic repeatability, the machine - controlled process eliminates human error, and weld quality is independent of operator skill or attitude. Process parameters easily monitored.

6) Inline Skate Braking Systems: Compounds of (essentially) hard rubber, the standard brake is rigidly fixed to the back of an inline skate (usually one of the pair) & is designed to cause friction when lowered onto the ground. Raising the front wheels of the boot, thus angling the skate up so that only the heel wheel is touching the ground & lowering the brake pad to the ground activates these brakes. The degree of pressure exerted on the boot & the brake determines how quickly you stop.

7) Cycling: cyclist uses friction between shoes and pedals, the chain and gears, and the bicycle’s tires and the road to make the bicycle move forward. At the same time, friction between the chain and gears, between the tires and the road, and between the cyclist and the air all resist the cyclist’s motion. As the cyclist pedals, friction converts some of the cyclist’s energy into heat, noise, and wear and tear on the bicycle. This energy loss reduces the efficiency of the bicycle.

8) Matches: When a person strikes a match against a rough surface, friction produces a large amount of heat on the head of the match and triggers the chemical process of burning.

9) Muscle Conditioning: The drag of of water on a swimmer creates liquid friction that can be used to strengthen muscles by acting against it.

10) Trains: One technique used by railroad engineers is to back up the train to create slack in the linkages between cars. This allows the train engine to pull forward and only take on the static friction of one car at a time, instead of all cars at once, thus spreading the static frictional force out over time.

Reducing Friction

Devices such as tires, ball bearings or roller bearing can change sliding friction into a much smaller type of rolling friction. Many thermoplastic materials such as nylon, HDPE and PTFE are commonly used for low friction bearings. They are especially useful because the coefficient of friction falls with increasing imposed load.

A common way to reduce friction is by using a lubricant, such as oil, water, or grease, which is placed between the two surfaces, often dramatically lessening the coefficient of friction.

Lower the temperature of the object.

Reduce the amount of sliding.

Reducing the amount of unevenness.

Change the surface.

Change the speed of the object.

Hi,

Hope You and Family are fine.


The Respiratory System
***********************************

The pulmonary and circulatory systems are designed to
provide the body with a continuous supply of oxygen and a
quick removal of carbon dioxide. The pulmonary system
controls the exchange of gases between the atmosphere and
the blood, while the circulatory system transports these gases
between the lungs and the cells. A dysfunction in either
system disrupts homeostasis, causing anoxia (an inadequate
level of oxygen) and even cell death.

The organs used in the exchange of gases between the
atmosphere and the blood are the nose, pharynx, larynx,
trachea, bronchi, and lungs. The trachea branches into
primary bronchi, secondary bronchi, bronchioles, terminal
bronchioles and finally the alveolar sacs which are the
functional units of the lungs (see diagram). Ventilation is the
movement of air between the atmosphere and the alveoli.
Diffusion is the process by which oxygen and carbon dioxide
cross the alveolar capillary membrane, and perfusion is the
injection of blood into an artery that supplies blood to an
organ or tissues. Lung problems go hand - in - hand with the
progressive feeding problems that develop in most children
with neurodegenerative diseases. As these children begin to
have difficulty swallowing, their gagging and coughing can
lead to "mini" or "major" aspirations (inhaling liquid into their
lungs). This can cause wheezing, which is a whistling sound
made by air going through a narrowed passageway. These
children develop increasing amounts of mucus in their lungs
resulting in congestion or can lead to pneumonia.

The lungs have a protective mucus lining that catches tiny
pieces of dirt, dust and other particles in the air we breathe.
These particles would irritate the lungs or cause infection if
they stayed in the lungs. Then the cilia (tiny hairs) act like an
escalator and carry the mucus up the windpipe to be coughed
out or swallowed. What color is mucus? Mucus can be
yellow, green, rust colored, brown, pink, or frothy white.

What does the cough sound like? It can be dry, barking,
hacking, or congested. When does he cough? Is it early
morning, late afternoon, or evening? If the lungs become
irritated or infected - a large amount of mucus is produced,
because the lungs are working extra hard to get rid of the
irritation or infection, and pneumonia likely develops


Upper respiratory tract problems include the following:
**************************************...

1. obstruction of the airway - food or objects - know the
heimlich maneuver

2. colds - runny nose, head cold

3. pharyngitis - sore throat, may have fever, swollen throat

4. tonsilitis - local infection of the tonsils - redden, swollen,
fever, sore throat

5. sinusitis and otitis media - painful inflammatory conditions of the sinuses and the middle ear drainage may occur leading to bacterial infection (whole body infection) influenza - fever, achy, sore throat, headache, cough


Lower respiratory tract problems include the following:
**************************************...
1. laryngo - tracheo bronchitis - croup -often preceded by a
cold - fever, hoarseness,croaking, cough, stridor (blowing of the windpipe to blocked air passages), restlessness - often seen in small children.

2. acute bronchitis - inflammation of the bronchi, fever,cough, wheezing, and "noisy" chest

3. pneumonia and bronchopneumonia - fever, restlessness,
chills, pain in chest, thick mucus, difficulty breathing, may hear rales and wheezing or rhonchi ( rales you will hear on inspiration - usually extra fluid in the lungs, where wheezing or rhonchi you
will hear on expiration and more of a whistling or wheezing sound), may have "bluish" color to their lips - can be life threatening



Hope this can help.

Take care,

Warm Regards,

Tanvir.

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