Happy Mother’s Day Mom…
22 Desember 2010, 13.06
Oleh: Ari Sulistiono di: Copas & Share
A mother is a person who seeing there are only four pieces of pie for five people, promptly announces she never did care for pie. ~Tenneva Jordan
Hundreds of dewdrops to greet the dawn,
Hundreds of bees in the purple clover,
Hundreds of butterflies on the lawn,
But only one mother the wide world over.
~George Cooper
Being a full-time mother is one of the highest salaried jobs... since the payment is pure love. ~Mildred B. Vermont
The sweetest sounds to mortals given
Are heard in Mother, Home, and Heaven.
~William Goldsmith Brown
If you have a mom, there is nowhere you are likely to go where a prayer has not already been. ~Robert Brault,
A suburban mother's role is to deliver children obstetrically once, and by car forever after. ~Peter De Vries
If the whole world were put into one scale, and my mother in the other, the whole world would kick the beam. ~Lord Langdale (Henry Bickersteth)
Mothers hold their children's hands for a short while, but their hearts forever. ~Author Unknown
The moment a child is born, the mother is also born. She never existed before. The woman existed, but the mother, never. A mother is something absolutely new. ~Rajneesh
All mothers are working mothers. ~Author Unknown
When you are a mother, you are never really alone in your thoughts. A mother always has to think twice, once for herself and once for her child. ~Sophia Loren, Women and Beauty
Mother love is the fuel that enables a normal human being to do the impossible. ~Marion C. Garretty, quoted in A Little Spoonful of Chicken Soup for the Mother's Soul
Mother - that was the bank where we deposited all our hurts and worries. ~T. DeWitt Talmage
A mother is a mother still,
The holiest thing alive.
~Samuel Taylor Coleridge
The real religion of the world comes from women much more than from men - from mothers most of all, who carry the key of our souls in their bosoms. ~Oliver Wendell Holmes
God could not be everywhere and therefore he made mothers. ~Jewish Proverb
A mother understands what a child does not say. ~Author Unknown
I remember my mother's prayers and they have always followed me. They have clung to me all my life. ~Abraham Lincoln
It would seem that something which means poverty, disorder and violence every single day should be avoided entirely, but the desire to beget children is a natural urge. ~Phyllis Diller
Woman in the home has not yet lost her dignity, in spite of Mother's Day, with its offensive implication that our love needs an annual nudging, like our enthusiasm for the battle of Bunker Hill. ~John Erskine
Women's Liberation is just a lot of foolishness. It's the men who are discriminated against. They can't bear children. And no one's likely to do anything about that. ~Golda Meir
A man loves his sweetheart the most, his wife the best, but his mother the longest. ~Irish Proverb
Before I got married I had six theories about bringing up children; now I have six children, and no theories. ~John Wilmot
You don't really understand human nature unless you know why a child on a merry-go-round will wave at his parents every time around - and why his parents will always wave back. ~William D. Tammeus
Now that... my kids are grown, I understand how much work and love it takes to raise and to keep a family together. The example of your strength, devotion, and patience is now rippling through the generations. Thank you! ~Forest Houtenschil
Biology is the least of what makes someone a mother. ~Oprah Winfrey
Motherhood is priced
Of God, at price no man may dare
To lessen or misunderstand.
~Helen Hunt Jackson
Are we not like two volumes of one book? ~Marceline Desbordes-Valmore
It kills you to see them grow up. But I guess it would kill you quicker if they didn't. ~Barbara Kingsolver, Animal Dreams
Who fed me from her gentle breast
And hushed me in her arms to rest,
And on my cheek sweet kisses prest?
My Mother.
~Ann Taylor
Who ran to help me when I fell,
And would some pretty story tell,
Or kiss the place to make it well?
My mother.
~Ann Taylor
On Mother's Day I have written a poem for you. In the interest of poetic economy and truth, I have succeeded in concentrating my deepest feelings and beliefs into two perfectly crafted lines: You're my mother, I would have no other! ~Forest Houtenschil
Children are a great comfort in your old age - and they help you reach it faster, too. ~Lionel Kauffman
Mother is the name for God in the lips and hearts of little children. ~William Makepeace Thackeray
A mother is the truest friend we have, when trials heavy and sudden, fall upon us; when adversity takes the place of prosperity; when friends who rejoice with us in our sunshine desert us; when trouble thickens around us, still will she cling to us, and endeavor by her kind precepts and counsels to dissipate the clouds of darkness, and cause peace to return to our hearts. ~Washington Irving
This heart, my own dear mother, bends,
With love's true instinct, back to thee!
~Thomas Moore
Insanity is hereditary; you get it from your children. ~Sam Levenson
The one thing children wear out faster than shoes is parents. ~John J. Plomp
Most mothers are instinctive philosophers. ~Harriet Beecher Stowe
Before a day was over,
Home comes the rover,
For mother's kiss - sweeter this
Than any other thing!
~William Allingham
I don't care how poor a man is; if he has family, he's rich. ~Dan Wilcox and Thad Mumford, M*A*S*H, "Identity Crisis,"
Oh, the comfort, the inexpressible comfort of feeling safe with a person, having neither to weigh thoughts nor measure words, but pouring them all out, just as they are, chaff and grain together, certain that a faithful hand will take and sift them, keep what is worth keeping, and with a breath of kindness blow the rest away. ~Dinah Craik
Where we love is home - home that our feet may leave, but not our hearts. ~Oliver Wendell Holmes, Sr.
In everyone's life, at some time, our inner fire goes out. It is then burst into flame by an encounter with another human being. We should all be thankful for those people who rekindle the inner spirit. ~Albert Schweitzer
Let us be grateful to people who make us happy, they are the charming gardeners who make our souls blossom. ~Marcel Proust
If I had a single flower for every time I think about you, I could walk forever in my garden. ~Attributed to Claudia Ghandi
A Freudian slip is when you say one thing but mean your mother. ~Author Unknown
Sweater, n.: garment worn by child when its mother is feeling chilly. ~Ambrose Bierce
All women become like their mothers. That is their tragedy. No man does. That's his. ~Oscar Wilde, The Importance of Being Earnest, 1895
Mothers are fonder than fathers of their children because they are more certain they are their own. ~Aristotle
A man's work is from sun to sun, but a mother's work is never done. ~Author Unknown
Making the decision to have a child is momentous. It is to decide forever to have your heart go walking around outside your body. ~Elizabeth Stone
Parents often talk about the younger generation as if they didn't have anything to do with it. ~Haim Ginott
Sing out loud in the car even, or especially, if it embarrasses your children. ~Marilyn Penland
Each day of our lives we make deposits in the memory banks of our children. ~Charles R. Swindoll, The Strong Family
There is only one pretty child in the world, and every mother has it. ~Chinese Proverb
Never raise your hand to your kids. It leaves your groin unprotected. ~Red Buttons
If nature had arranged that husbands and wives should have children alternatively, there would never be more than three in a family. ~Lawrence Housman
Setting a good example for your children takes all the fun out of middle age. ~William Feather, The Business of Life, 1949
Your responsibility as a parent is not as great as you might imagine. You need not supply the world with the next conqueror of disease or major motion-picture star. If your child simply grows up to be someone who does not use the word "collectible" as a noun, you can consider yourself an unqualified success. ~Fran Lebowitz, "Parental Guidance," Social Studies, 1981
There’s nothing I can’t say about her, just wanna say I love you mom.. love you so much.. ~Ari Sulistiono, My Personal E-Notes, Dec 2010
Tags: Copas & Share
Siklus Kerja PLTGU - Gas Turbine Generator Cycles
Idem, Di Jam 13.03
Oleh: Ari Sulistiono di: Ilmu Listrik, Power System
Simple Cycle | Siklus sederhana
A combustion gas turbine is a rotary engine that extracts energy from a flow of combustion gas. Sebuah turbin gas pembakaran adalah mesin rotari bahwa ekstrak energi dari aliran gas pembakaran. It has an upstream compressor coupled to a downstream turbine, and a combustion chamber in-between. Ini memiliki kompresor hulu digabungkan ke turbin hilir, dan sebuah ruang pembakaran di-antara. Energy is added in the combustor, where fuel is mixed with air and ignited. Energi ditambahkan di ruang bakar, di mana bahan bakar dicampur dengan udara dan dinyalakan. Combustion increases the temperature, velocity and volume of the gas flow. Pembakaran meningkatkan suhu, kecepatan dan volume dari aliran gas. This is directed through a nozzle over the turbine's blades, spinning the turbine and powering the compressor. Hal ini diarahkan melalui nosel atas bilah turbin, turbin berputar dan menyalakan kompresor. Energy is extracted in the form of shaft power which is used to drive an electric generator. Energi diekstraksi dalam bentuk kekuasaan poros yang digunakan untuk menggerakkan sebuah generator listrik.
Combined Cycle | Siklus Gabungan
A combined cycle is a power producing engine or plant that employs more than one thermodynamic cycle. Siklus gabungan adalah kekuatan memproduksi mesin atau tanaman yang mempekerjakan lebih dari satu siklus termodinamika. Gas turbine engines are only able to use a portion of the energy their fuel generates. mesin turbin gas hanya dapat menggunakan sebagian dari energi bahan bakar menghasilkan. The remaining heat from combustion is generally wasted. Panas sisa dari pembakaran umumnya terbuang. Combining two or more "cycles", such as the Brayton cycle (gas turbine) and Rankine cycle (steam turbine, condenser, cooling tower), results in improved overall efficiency. Menggabungkan dua atau lebih "siklus", seperti siklus Brayton (turbin gas) dan siklus Rankine (uap turbin, kondenser, menara pendingin), menghasilkan peningkatan efisiensi secara keseluruhan. In a combined cycle power plant, a gas turbine generator generates electricity and the exhaust, waste heat is used to make steam to generate additional electricity using a steam turbine; this last step enhances the efficiency of electricity generation. Dalam pembangkit listrik combined cycle, generator turbin gas menghasilkan listrik dan gas buang, limbah panas digunakan untuk membuat uap untuk menghasilkan listrik tambahan menggunakan turbin uap; ini langkah terakhir meningkatkan efisiensi pembangkit listrik.
Simplified Combined Cycle (SCC) | Sederhana Combined Cycle (SCC)
SCC technology similarly captures combustion gas turbine waste heat and turns it into steam, creating additional power without the need for a steam turbine, condenser or cooling tower. teknologi SCC juga menangkap turbin gas panas pembakaran sampah dan mengubahnya menjadi uap, menciptakan tenaga tambahan tanpa perlu turbin uap, kondensor atau menara pendingin. Like the combined cycle, capturing this waste heat results in increased production of kWh without additional fuel being burned. Seperti siklus gabungan, hasil ini menangkap limbah panas dalam peningkatan produksi kWh tanpa bahan bakar tambahan yang dibakar. Because injected steam cools the combustor's hot gases, it is possible to burn additional fuel and stay in compliance with the thermal limits of the engine. Karena uap disuntikkan mendinginkan gas panas ruang bakar, itu adalah mungkin untuk membakar bahan bakar tambahan dan tinggal sesuai dengan batas termal mesin. The result is increased capacity and improved efficiency. Hasilnya adalah peningkatan kapasitas dan peningkatan efisiensi.
SCC achieves emissions improvements by pre-mixing steam and fuel before injection into the combustor. SCC mencapai perbaikan emisi oleh uap pra-pencampuran dan bahan bakar sebelum injeksi ke ruang bakar tersebut. The result is a smaller, cooler flame which reduces NO x . Hasilnya adalah dingin, api kecil yang mengurangi NO x. NO x of less than 5 ppmvd has been achieved in the field, while in atmospheric rig tests NO x levels of less than 2 ppmvd have been achieved. NO x kurang dari 5 ppmvd telah dicapai di lapangan, sedangkan dalam tes rig atmosfer NO x tingkat kurang dari 2 ppmvd telah dicapai.
The low NO x levels are achieved because CO stays below 10 ppmvd, while steam injection is increased to levels not achievable without a very homogeneous mixture of steam and fuel. NO x rendah tingkat yang dicapai karena CO tetap di bawah 10 ppmvd, sedangkan injeksi uap meningkat ke tingkat yang tidak dapat dicapai tanpa campuran homogen sangat uap dan bahan bakar. The ability to produce the NO x and CO allows greater turndown while maintaining compliance. Kemampuan untuk menghasilkan NO x dan CO memungkinkan turndown lebih besar dengan tetap menjaga kepatuhan.
Usually, SCC reduces the turbine inlet temperature and extends the hot gas path time between overhaul by at least fifty percent. Biasanya, SCC mengurangi temperatur masuk turbin dan memperpanjang lorong waktu gas panas antara perbaikan oleh setidaknya lima puluh persen.
Faster start requiring less fuel is possible because steam can be injected in the gas turbine as quickly as it is produced, avoiding steam turbine warm-up requirements. Cepat mulai membutuhkan sedikit bahan bakar ini dimungkinkan karena uap dapat disuntikkan dalam turbin gas secepat diproduksi, menghindari turbin uap pemanasan persyaratan. *belum sempet dirapihkan, maap gan*
Semoga Bermanfaat dan mudah-mudahan dapat menambah wawasan.
Tags: Ilmu Listrik, Power System
Pemilihan Ukuran Pompa Listrik (Pump Sizing)
16 Desember 2010, 12.29
Oleh: Ari Sulistiono di: Ilmu Listrik
- Reading Pump Performance Curves
- Pump Capacity Factors
- Pump Affinity Laws
- How to Calculate Brake Horsepower
Pump Performance Curve
A Pump Performance Curve is produced by a pump manufacturer from actual tests performed and shows the relationship between Flow and Total Dynamic Head, the Efficiency, the NPSH Required, and the BHP Required.
- Higher Head = Lower Flow
- Lower Head = Higher Flow
- Lower Flow = Lower Horsepower
- Higher Flow = Higher Horsepower
Pump Capacity (Kapasitas Pompa)
Pompa sentrifugal adalah sebuah pompa perpindahan variabel. Laju aliran aktual dicapai secara langsung berdasarkan pada TDH (Total Dynamic Head) yang harus ditempuh.
Kapasitas aliran pompa sentrifugal juga tergantung pada tiga (3) faktor lainnya, yaitu:
- Desain Pompa
- Diameter Impeller
- Pompa Speed
Hukum Affinity
Kinerja atau performance dari sebuah pompa sentrifugal dipengaruhi oleh perubahan kecepatan atau diameter impeller-nya.
- Q = Kapasitas (GPM)
- D = Diameter Impeller
- H Total Dynamic Head = (Feet)
- BHP = Brake Horsepower
- N = Kecepatan (RPM)
Hukum afinitas untuk pompa sentrifugal dengan diameter impeller tetap konstan dan kecepatan berubah:
Flow:
- Q1 / Q2 = N1 / N2
- Example: 100 / Q2 = 1750/3500
- Q2 = 200 GPM
Head:
- H1/H2 = (N1) x (N1) / (N2) x (N2)
- Example: 100 /H2 = 1750 x 1750 / 3500 x 3500
- H2 = 400 Ft
Horsepower(BHP):
- BHP1 / BHP2 = (N1) x (N1) x (N1) / (N2) x (N2) x (N2)
- Example: 5/BHP2 = 1750 x 1750 x 1750 / 3500 x 3500 x 3500
- BHP2 = 40
Hukum afinitas untuk pompa sentrifugal dengan kecepatan tetap konstan dan diameter impeller berubah:
Flow:
- Q1 / Q2 = D1 / D2
- Example: 100 / Q2 = 8/6
- Q2 = 75 GPM
Head:
- H1/H2 = (D1) x (D1) / (D2) x (D2)
- Example: 100 /H2 = 8 x 8 / 6 x 6
- H2 = 56.25 Ft
Horsepower(BHP):
- BHP1 / BHP2 = (D1) x (D1) x (D1) / (D2) x (D2) x (D2)
- Example: 5/BHP2 = 8 x 8 x 8 / 6 x 6 x 6
- BHP2 = 2.1
Brake Horsepower
- BHP = Flow(GPM) X TDH(FT) x SG /3960xEFFICIENCY(%)
- Example: BHP = (100 GPM) x (95 Ft) x (1.0) / 3960 x .6
- BHP = 4.0
Semoga Bermanfaat dan menambah wawasan.
Tags: Ilmu Listrik
Dibalik Valentino Rossi
2 Desember 2010, 13.00
Oleh: Ari Sulistiono di: Copas & Share
Profesi awal: Ojek Sepeda di Glodok
Akhirnya jadi Tukang Ojek Beneran
Hobinya kebut-kebutan bareng anak-anak biker yang laen..
Gara-gara selalu pertamax dan lebih pertamax dari motornya akhirnya Rossi dikontrak jadi pembalap professional.
Tambahan (Sotosop gan):
Intermejo Bro! Jangan yang serius-serius terus lah..
Tags: Copas & Share