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All Journal Refleksi: Jurnal Filsafat dan Pemikiran Islam INTERNATIONAL JOURNAL OF SOCIETY REVIEWS (INJOSER)
Sulistiyo
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ANALYSIS OF THE EFFECT OF CHANGES IN VACUUM PRESSURE ON CONDENSER EFFECTIVENESS BEFORE AND AFTER OVERHAUL IN BLOK 1 PLTGU UP GRESIK Sulistiyo; Evytabela Ayu Kristina; Muhammad Ridwan
INTERNATIONAL JOURNAL OF SOCIETY REVIEWS Vol. 2 No. 5 (2024): MAY
Publisher : Adisam Publisher

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Abstract

The condenser in the operation of PLTGU serves to condense the residual steam of the low pressure turbine. The purpose of this study is to determine the effect of changes in vacuum pressure on condenser performance and determine the effect of overhaul on condenser performance. The variation in vacuum pressure on the condenser will be seen the effect of vacuum pressure on condenser performance. The results obtained the effectiveness score after overhaul was better than before overhaul by an average of 42.032% to 47.022%. The highest effectiveness at vacuum pressure of 679.5 mmHg was 46.103% before overhaul and 49.66% after overhaul. Meanwhile, the lowest effectiveness at vacuum pressure of 669.5 mmHg with effectiveness values ​​before overhaul 39.45% and 45.94% after overhaul. The effectiveness of the condenser increases by an average of 4.99% after the overhaul. The level of vacuum in the condenser affects the effectiveness value of the condenser, the higher the value of vacuum pressure will increase the value of the heat transfer rate so that the effectiveness will increase. Factors that affect condenser performance are the level of tube cleanliness, the number of pluggings, vacuum pressure, and the operation of condenser supporting components.
Konsep Ittiḥād dalam Fabel Mantiq at-Ṭair: Pemikiran Tasawuf Falsafi Farīduddīn ‘Aṭār (1145-1221 M) Muhammad Ihza Fazrian; A.Anjasyah; Sulistiyo
Refleksi Jurnal Filsafat dan Pemikiran Islam Vol. 23 No. 2 (2023): Vol. 23. No. 2 (2023): Refleksi Jurnal Filsafat dan Pemikiran Islam
Publisher : UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/ref.v23i2.5108

Abstract

This article focuses on Farīduddīn ‘Aṭār 's philosophy of Sufism, namely the concept of ittihad. His thoughts on ittihad can be explored through his work in the form of a fable entitled Mantiq at-Ṭair (The Deliberation of Birds). The fable tells the story of birds that gather and deliberate to find their King named Simurgh. Everything contained in the work is a reflection of ‘Aṭār 's own Sufistic experience in seeking God which is retold through fables. In general, the concept of ittihad was initiated by Abu Yazid al-Bustami, ‘Aṭār developed the concept through his work. Regarding the process of ittihad, in his work ‘Aṭār tells the story of the seven valleys that birds must pass through in search of Simurgh; ṭalab (search), ‘isyq (love), ma'rifat (knowledge), istighnā (the absurdity of things around), tawhīd (unity), hīraṭ (confusion), and fana. The valleys are described as challenges that must be overcome by a Sufi who wants to find his God. The journey ends with the transience of the birds (Sufis) towards other than the Simurgh (God) to cause devotion to Him. This research uses descriptive-analytic method with data obtained from relevant literature sources to build structured and systematic findings. The findings in this article show that the concept of ittihad developed by ‘Aṭār emphasizes the aspects of ‘isyq and fana to find God.
Co-Authors A.Anjasyah Evytabela Ayu Kristina Muhammad Ihza Fazrian Muhammad Ridwan