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Journal : JURNAL R

Metoda Estimasi Komperatif Untuk Analisa Beban Pendingin Sistim Pengkondisian Udara Zamri, Aidil; Zulhendri, Zulhendri
JURNAL R & B Vol 3, No 2 (2003)
Publisher : JURNAL R & B

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Abstract

Air conditioning process is a technique that can be used to adjust preferable condition of air temperature in a room so an appropriate condition can be achieved. Cooling pocess is a room can be identified as a transferring process of heat from that room into other places. This absorbing or transferring process is not as casy as the process of interesting the heat into the room. In absorbing process of the heat, it is necessary to use certain equipment and careful activities, particularly in choosing the right devices and planning activities choosing cooling procedures. Those device must be really determinated by several factors such as the quantity of the absorbed heat, duration and capacity of utilized devices.
Analisa Kegagalan Sambungan Las Pada Pipa Aunstenit Stainless Steel Adril, Elvis; Badaruddin, M; Zulhendri, Zulhendri
JURNAL R & B Vol 2, No 1 (2002)
Publisher : JURNAL R & B

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Abstract

Austenit stainless steel pipe which is connected through welding process is easily broken. It is manly due to the crack which is located in HAZ (head effected zone). The changing in micro structure creates that crack sin re there are a lot of martensit pieces. This layer includes cause of residual stress that can cause micro crack. Another cause of this crack is corrosion. This SCC is caused by the residual sterss on the material and it occurs in corrosion environment. These to causes will lead failure in construction. This failure will occur if the value of resistance intensity factor ( k1 > k 1c) or the legth of allowed crack.