Posts tagged: cycle

How To Swap Evaporative Air Conditioning System To Ducted Reverse Cycle System

By -, March 15, 2010 5:38 am


People often want to know whether they can change their existing ducted evaporative system over to a new ducted reverse cycle (HVAC) air conditioning system by using all the same ductwork and outlets. The simple answer is no. Below is a list of reasons as to why you cannot simply change the system over to become a reverse cycle (HVAC) system. 

Firstly, reverse cycle grilles (or outlets) are usually placed near windows and away from the doors. This allows the air to condition the heat/cold that comes in directly through the windows. The airflow for a reverse cycle system should also take the longest route back from the outlet to the return air grille. If an outlet was placed next to a door, the air would simply be sucked back underneath the door towards the return air grille and the room would have hot spots near the window. 

The problem with evaporative grilles is that they are usually located by the doorways. The evaporative units airflow should take the longest possible path through a room and out of the window. If they were located right next to a window, the air would simply flow out the window and hot spots would be caused near the doorways and in the far side of rooms. 

Due to these reasons it is not advised to place reverse cycle grilles in a same spot where a ducted evaporative grille was previously located. Although it is possible to do it will severely lessen the effectiveness and capacity of the system. The best option is to start fresh and put the new reverse cycle grilles in the correct desired location as required. 

However, this would mean you would need to patch and paint the holes in the ceiling left by the removal of the old evaporative grilles and this can be a costly job. Another option would be to add extra grilles as needed. You can consider leaving grilles near the doorways from the evaporative system and add extra grilles by the windows if needed. 

Another problem encountered when swapping the systems over is that the old ducting cannot be used. The ducting used for evaporative units is far larger than that required for reverse cycle ducted air conditioners. Evaporative units use ducting around the 16-20 inch mark. This large size duct is used by evaporative air conditioners as the air is extremely fast blowing and it aims to draw in air to the amount of 40 times the cubic area of your house per hour. 

Reverse cycle ducting is mostly only around the 12 inch mark in diameter. This is because reverse cycle air conditioning is far slower moving than it’s evaporative counterpart. Evaporative ducting is also usually only slightly if at all insulated. Reverse cycle ducting should always be insulated by a minimum of 2 inches to preserve the cooling/heating and to prevent condensation from occurring. So if you want to swap your current evaporative system over to a new reverse cycle ducted system, you are best to start from scratch. 

Be sure to get quite a few quotes for the cost to patch and paint the ceiling before starting any work. And if air conditioning contractors tell you they can simply swap a system over using the existing duct and outlets, ask lots of questions and be wary as they may not be around to help you out once you have paid good money and your system is not working effectively. In some cases using the existing grilles can be an option, but it would make the system less effective.

For more information and advice about air conditioning please feel free to visit our informative site. Please visit us for more information on air conditioning brands and air conditioning prices.

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Not All Hair Loss Means Hair Problems – Understand The Cycle Of Hair Growth First…

By -, March 13, 2010 5:41 pm


Hair grows in recurring cycles, with each cycle composed of three phases – anagen, catagen and telogen. The anagen phase is also referred to as the growth phase. About 85 to 90% of all the hairs in our heads are in this phase at one time. This part of the growth cycle lasts from 2 to 6 years and can continue for up to 8 years.


Once the hair reaches its maximum length in the anagen phase, the catagen phase of the growth cycle begins. This is a short phase, lasting only about 1 to 2 weeks. The catagen phase is also referred to as the transitional phase, when the cycle reaches the regressive stage and hair growth slows down. The follicle shrinks in size and the base begins to break down.


The telogen phase of the growth cycle is also known as the resting phase, when growth stops completely. This is the part where the follicle becomes degraded. This cycle lasts for about 6 weeks. Some hair may fall out but some stay in the follicle. Near the end of the telogen phase, new hair begins to form and grow. If the old hair is still attached, it is forced out and falls off the head. About 10% of our hair are in the telogen phase.


Hair growth cycle and hair loss


To understand hair loss, it is important that we know the nature of the cycle of hair growth. It is normal for people to lose 50 to 100 hairs a day. When this happens, you are probably in the telogen phase. You’ll probably find these lost strands in your brush, comb or on your shower floor. This is normal and there is no need to worry because they will be replaced by new growth.


It is only when you’re losing more and are noticing rapid thinning that you should be concerned. These are signs that your hair growth is not fast enough to replace lost strands and there is a possibility that your normal hair cycle has been disrupted.


Hair grows from the follicles which are found in the top layer (epidermis) of the skin. It is made of keratin, a form of protein, the same component of the epidermis, fingernails and toe nails. At the base of the follicles, a papilla is found, which is made of blood vessels and nerves. These ensure that the growth cycle runs uninterrupted.


Factors that can affect hair growth


Barring any obstacle, the hair growth cycle will continue unabated. It is only when some factors are applied that the cycle is disrupted or stopped. These factors can lead to temporary hair loss. Or if not, they can cause alopecia, which is more permanent. These can include hormones, nutritional deficiencies, diseases of the thyroid gland, chemotherapy and radiation. The cycle may also be affected by skin diseases of the scalp, trauma or stress.


Certain drugs can also disrupt normal growth, including anti-depressants, hypertension drugs, retinoids and birth control pills. The birth of a baby may also contribute to hair loss, along with diseases such as lupus, diabetes and HIV/AIDS. Men and women with eating disorders or undergoing severe dieting are also susceptible to this condition.


It is interesting to note that hair growth is not indicated in the human embryo in its initial stages. Hair growth only becomes apparent when hair follicles begin to appear in the early stages of the embryo’s development, before it assumes a human form in the mother’s womb. Evidence of hair growth begins to appear when the fetus is approximately 9 weeks old. By 9 months, the human fetus already has every hair follicle he/she will ever have.

http://www.hairlossconfidant.com was created by Steven Yeoh and provides information on hair loss. If you found the information in this article useful, please visit his site and sign up for his 2 FREE reports on men/women hair loss.

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Post Cycle Therapy Primer

By -, March 10, 2010 5:55 pm


Post cycle therapy (PCT) is a must for maximum benefits from any prohormone or steroid cycle! Anabolic steroids are the synthetic derivatives of the naturally occurring male anabolic hormone testosterone. Testosterone is a hormone that is responsible for the secondary sex characteristics you see in males such as deep voice, body hair etc. Anabolic-androgenic steroids , hormones that boost muscle anabolism , have been used by professional and recreational athletes for decades. Periods of AAS use , referred to as steroid cycles , are employed to generate greater increases in strength and muscle hypertrophy .


PCT’s are used to come off of a cycle of a (prohormone/prosteroid/anabolic-androgenic steroid) cycle. A PCT’s function is not only to help maintain gains, but to bring your body back to where it would naturally be, or as close to that as possible, help prevent rebound effects, and control some of the other ‘bad’ effects a cycle can create. Post-cycle therapy will start the day after you stop taking your testosterone enhancers.


Hormone levels want to be in a precise balance, which includes the testosterone/estrogen balance. Many pro-hormones claim that their products cannot aromatize, thus leading you to a conclusion that you do not need to worry about estrogen. Hormones are powerful chemical messengers and should always be treated as such to avoid unwanted results.


Estrogen as well inhibits the production of natural testosterone, and in the period between the return of natural testosterone and the end of a cycle, a lot of mass is lost. So its in everybody’s best interest to bring back natural test as soon as humanly possible.


Clomid and Nolvadex will reduce the post-cycle estrogen, so that the hypothalamus is stimulated to regenerate natural testosterone production in the body. That’s basically how the mechanism works, nothing more, nothing less. Clomid and Nolvadex are both anti-estrogens belonging to the same group of triphenylethylene compounds. They are structurally related and specifically classified as selective estrogen receptor modulators (SERMs) with mixed agonistic and antagonistic properties.


Estrogen and its side effects can also be controlled by using an aromatase inhibitor such as Aromasin, Femara and Arimidex during cycles including aromatizing AAS. Prolactin and its side effects can be controlled by using an anti Prolactin such as Cabergoline (Dostinex) or Bromocriptine (Parodel) during cycles containing nandrolones. Estrogen rebound is tough on a guy. Lost gains are sometimes even tougher to take. Proper post cycle therapy can control both of these issues.


Post cycle therapies are necessary and should not in any way be taken lightly. When starting a cycle, you should always know your PCT and have it lined up ahead of time.

If you’re looking for testosterone boosting supplements you can find reviews of the most popular ones at http://www.anabolicandsteroid.com along with more details on keeping your gains with proper post cycle therapy.

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Credit Cards – Two Cycle Billing and the Disappearing Grace Period

By -, March 9, 2010 11:43 pm


Most people are unaware of the “two cycle” billing method used by many credit card issuers today. This billing method actually makes consumers pay interest twice for charges that they put on their credit cards. Two cycle billing can even apply to those consumers who pay their credit card balance off each month. That’s not all either; credit cards that have two cycle billing effectively rob card holders of their grace period if they carry a balance from month to month.

Almost all credit cards offer a grace period that allows consumers to pay off their charges without having to pay interest. For our example let’s assume its 30 days.  So, if you were to make a $1000 purchase in January 1st and pay it off in March 1st you would expect to pay interest for the month of February, right?  With single cycle billing you will, however with two cycle billing you will pay interest for January and February.

Without getting too deep into the math, credit card companies charge interest on your average daily balance (balance divided by 30 days). If you pay your bill in full at the beginning of February, your next statement should have a zero balance. Two cycle billing calculates your interest on a 60 day average instead of dividing by 30 days. So, when your bill arrives in February you will pay your minimum payment, or your balance, plus interest for the first 30 days.

 This interest charge on your first statement will actually be lower than the single billing cycle because it has been calculated with 60 days instead of 30 days. However, when your bill arrives in March you will receive another interest payment for the remainder of the 60 day cycle, regardless of your balance. The truth is, the difference in interest between the two methods is only a couple of bucks, assuming that you pay the $1000 off in a month’s time. However, for those who carry a balance from month to month this additional interest can begin to add up. Not to mention the two cycle method will essentially rob you of your provisional grace period that is allowed on new purchases.

For example, when you carry a balance from month to month, your first statement will show your initial interest charges, less the original grace period.  However, using the two cycle billing method, all new purchases will be added to the 60 day average and interest calculated on that new balance. This means, that even if you pay your new purchases off in full the next month, you will still be paying interest on them the following month.

The best way to avoid the double cycle billing is to read the fine print before you apply, and then simply avoid the cards that use this method. Where it gets tricky is; what if the card that you are considering has a significantly lower rate than a comparable card that uses the two cycle billing method? If you are someone who pays the balance off each month, it’s a no-brainer, take the lowest rate. Just be sure that you pay within the grace period. If you are considering a balance transfer, you need to realistically, calculate how long it will take you to pay off your credit card balance.

Balance transfers require some math, if you follow the link below to Direct Banc, you can use our balance transfer calculator to get a better idea of which card will be the best for you.  As always, we suggest that you read the “fine print” before applying for any credit card to avoid any surprises. Remember, if you get a card that you don’t like, you can simply cancel the card when it arrives at no cost to you.

Aubrey Clark is an Author and editor for Direct Banc, a directory of low interest rate credit cards, specializing in credit cards for fair credit. Aubrey is a native of Destin, Florida but now lives in Atlanta Georgia since 1999 with his wife and four children.

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Does it Lose One Life on a Charge-discharge Cycle Time

By -, March 8, 2010 11:40 am


Trackback: http://www.mylaptopbattery.co.uk/blog/2009/02/03/does-it-less-one-life-on-a-charge-discharge-cycle-time/

Cycle is use, we are in use of our batteries, so we concent the battery using time. It provides of the definition of cycles, in order to measure how long the rechargeable battery can be used in such a performance. The actual users use battery in a variety condition , because the conditions are different, the test are not comparable. We must standardize the definition of life in order to have the cycle.

If the provisions of the cycle life test conditions and requirements: In 25 degrees temperature under normal conditions can be achieved in accordance with the IEC standard rechargeable Fang Zhou 500-1000; by 1C charge-discharge performance test fast life, up to 300 – 600 weeks.

Explained:

A. This definition provides for cycle life testing is necessary and sufficient deep deep release manner

B. In accordance with the provisions of the cycle of life after the implementation of this model must be more than 300 times after the capacity is still more than 60%

In fact, different cycle of the system, the cycle number is different.

Set aside to talk about the rules of cycles there is no significance, because the cycles are a means of detection of battery life, not an end! Many people like to use automatic shutdown battery recharge, this is completely unnecessary.

There is another kind of cycle life on the measurement of time. Some experts say that the general civilian Ni-MH battery life is 1-2 years, combined with the actual situation, for example, 60% of the capacity of the termination of life, time to express cycle life.

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