Vol. 12 No. 1 (1997)

Pencocokan setiap komponen PLTGU bisa dilakukan dengan sualu program simulasi. Pada penelitian ini, simulasi keadaan tunak dibuat untuk PLTGU Tanjung Priuk dengan beberapa penyederhanaan. Tiap blok PLTGU tersebut terdiri dari 3 buah siklus gas dan 1 buah siklus uap dengan 3 buah HRSG. Data yang diambil dari ruang kontrol diolah untuk mendapatkan persamaan karakteristik garis operasi dari setiap komponen. Selanjutnya program simulasi dibuat berdasarkan persamaan-persamaan tersebut bersama-sama dengan persamaan persamaan fisik lainnya sehingga terbentuk sistem persamaan simultan 47 persamaan…

This paper describes dynamic modeling and model validation of a couple-tank control system which consist of a couple-tank, two motor-and-pumps, two electric-motor drivers, and two water-level sensors. Initially, dynamic modeling of the couple-tank was derived analytically. This derivation produced several parameters whose values were unknown. Experiments were then performed in order to obtain the values of those parameters. In addition to the couple-tank, other components were also modeled statically. Once all components of the couple-tank controlled system have been modeled, model validation…

To simulate the thermohydraulic characteristics of reflooding process of a nuclear core reactor during lost of cooling accident, an experimental study using a reduced model was carried-out. The core reactor model consists of a 50 mm tubular transparent shell made of quartz and a bundle of 4 zircaloy-4 pipes of equal diameter 10.7 mm which are equipped with electrical heaters in the inside. The configuration of pipe bundle is in-line with the distance between pipe axis is 14.2 mm. The pipes are identic to those usually used as nuclear reactor fuel claddings. The quenching process was done by…

In this paper, moisture absorption process in composite material was analytically and experimentally studied. The environmental condition was 72o C and 85 % RH. During a fixed interval time, the composite specimens were taken out from the experimental chamber and weighted. The weight gain showed that the absorption isoterm profile followed Fick Law andthere was a good agreement between the analytical and experimental results. The average maximum moisture absorption was 0.84 %.