Minggu, 10 Oktober 2010

Tip & Trik Untuk Kebutuhan AC

Untuk menghitungnya, kita konversi dulu PK – BTU/hr – Luas Ruangan (m2).

1 PK = 9.000-10.000 BTU/h
1 m2 = 600 BTU/h
1 m = 3.33 kaki

Daya Pendingin AC berdasarkan PK :

AC ½ PK = ±5.000 BTU/h
AC ¾ PK = ± 7.000 BTU/h
AC 1 PK = ± 9.000 BTU/h
AC 1½ PK = ±12.000 BTU/h
AC
2 PK = ±18.000 BTU/h


Kemudian ada rumus untuk menghitung

(W x H x I x L x E) / 60 = kebutuhan BTU

W = panjang ruang (dalam feet)

H = tinggi ruang (dalam feet)

I = nilai 10 jika ruang berinsulasi (berada di lantai bawah, atau berhimpit dengan ruang lain). Nilai 18 jika ruang tidak berinsulasi (di lantai atas).

L = lebar ruang (dalam feet)

E = nilai 16 jika dinding terpanjang menghadap utara; nilai 17 jika menghadap timur; nilai 18 jika menghadap selatan; dan nilai 20 jika menghadap barat.



Misal :

Ruangan dengan ukuran 3 M x 6 M atau (10 kaki x 20 kaki).

Tinggi ruangan 3m (10 kaki) tidak berinsulasi.

Dinding panjang menghadap ke timur.


Kebutuhan BTU = (10 x 20 x 18 x 10 x 17) / 60 = 10.200 BTU alias cukup dengan AC 1 PK.

Selasa, 06 Juli 2010

USB FD Ngga Muncul Di Window?

To fix this problem, delete the UpperFilters registry value and the LowerFilters registry value. These values may cause access problems. To do this, follow these steps:
  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the UpperFilters registry value. This value is located in the following registry subkey:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
  3. On the Edit menu, click Delete, and then click OK.

    Note If you receive an error when you try to delete the registry subkey, you may not have appropriate permissions to edit the subkey. For more information about how to set or change registry editing permissions, click the following article number to view the article in the Microsoft Knowledge Base:
    310426 How to set or change registry editing permissions in Windows XP or in Windows Server 2003
  4. Locate and then click the LowerFilters registry value. This value is located in the following registry subkey:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}
  5. On the Edit menu, click Delete, and then click OK.

    Note If you receive an error when you try to delete the registry subkey, you may not have appropriate permissions to edit the subkey. For more information about how to set or change registry editing permissions, click the following article number to view the article in the Microsoft Knowledge Base:
    310426 How to set or change registry editing permissions in Windows XP or in Windows Server 2003
  6. Exit Registry Editor.
  7. Restart the computer.