Study of the performance of an existing vapor compression unit in egyptian petrochemicals company using R22 And R290 Refrigerants (Record no. 170661)
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000 -LEADER | |
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fixed length control field | 04777namaa22004211i 4500 |
003 - CONTROL NUMBER IDENTIFIER | |
control field | OSt |
005 - أخر تعامل مع التسجيلة | |
control field | 20250223033427.0 |
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
fixed length control field | 250208s2024 |||a|||f m||| 000 0 eng d |
040 ## - CATALOGING SOURCE | |
Original cataloguing agency | EG-GICUC |
Language of cataloging | eng |
Transcribing agency | EG-GICUC |
Modifying agency | EG-GICUC |
Description conventions | rda |
041 0# - LANGUAGE CODE | |
Language code of text/sound track or separate title | eng |
Language code of summary or abstract | eng |
-- | ara |
049 ## - Acquisition Source | |
Acquisition Source | Deposit |
082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
Classification number | 661.804 |
092 ## - LOCALLY ASSIGNED DEWEY CALL NUMBER (OCLC) | |
Classification number | 661.804 |
Edition number | 21 |
097 ## - Degree | |
Degree | M.Sc |
099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
Local Call Number | Cai01.13.04.M.Sc.2024.Mo.S |
100 0# - MAIN ENTRY--PERSONAL NAME | |
Authority record control number or standard number | Mohamed Ibrahim Mohamed El-kafoury, |
Preparation | preparation. |
245 10 - TITLE STATEMENT | |
Title | Study of the performance of an existing vapor compression unit in egyptian petrochemicals company using R22 And R290 Refrigerants |
Statement of responsibility, etc. | by Mohamed Ibrahim Mohamed El-kafoury ; Supervisors Prof. Ahmed Soliman Mohamed Fawzy, Dr. Ahmed Wafiq Abd elmohsen Abo Elnasr. |
246 15 - VARYING FORM OF TITLE | |
Title proper/short title | /كمواد تثليج(R290)والبروبان(R22)دراسة أداء وحدة التثليج العامله بتكنولوجيا ضغط البخار بشركة المصريه للبتروكيماويات باستحدام الفريونR22) دراسة أداء وحدة التثليج العامله بتكنولوجيا ضغط البخار بشركة المصريه للبتروكيماويات باستحدام الفريون |
264 #0 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
Date of production, publication, distribution, manufacture, or copyright notice | 2024. |
300 ## - PHYSICAL DESCRIPTION | |
Extent | 70 pages : |
Other physical details | illustrations ; |
Dimensions | 30 cm. + |
Accompanying material | CD. |
336 ## - CONTENT TYPE | |
Content type term | text |
Source | rda content |
337 ## - MEDIA TYPE | |
Media type term | Unmediated |
Source | rdamedia |
338 ## - CARRIER TYPE | |
Carrier type term | volume |
Source | rdacarrier |
502 ## - DISSERTATION NOTE | |
Dissertation note | Thesis (M.Sc.)-Cairo University, 2024. |
504 ## - BIBLIOGRAPHY, ETC. NOTE | |
Bibliography, etc. note | Bibliography: pages 69-70. |
520 ## - SUMMARY, ETC. | |
Summary, etc. | Chlorofluorocarbons (CFCs) commonly known as Freon, were believed to be suitable working fluids up to the early 1990’s, however the world’s leading ecologists and their counterparts in industry and commerce all agree that (CFCs) are the primary cause of ozone-layer depletion in the atmosphere . On September 19, 1987, 24 countries meeting in Montreal signed the Protocol on Substances Depleting the Ozone Layer, After the Montreal Protocol, there was a tremendous effort within the refrigeration and air-conditioning industry to find proper replacements for (CFCs).According to Montreal Protocol (R22) should be phased out with more safe substance to the Ozone layer, Propane (R290) is one of the most efficient refrigerant and less harmful to the Ozone layer than (R22). In this Thesis complete comparison of the performance of both (R22) and (R290) used in the Vapor Compression Cycle (VCC) in Egyptian Petrochemicals Company (EPC). |
520 ## - SUMMARY, ETC. | |
Summary, etc. | كانت مركبات الكلوروفلورو كربون (CFCs)،والمعروفه باسم الفريون،تستخدم كثره فى شكل سوائل عاملة في دورات التثليج ولكن بعد بروتوكول مونتريال فى عام 1987، كان هناك جهد هائل فى صناعة التثليج وتكييف الهواء لايجاد بدائل مناسبه لها .وفقا لبروتوكول مونتريال ،يجب التخلص التدريجى من غاز الفريون (R22) واستبداله بمثلجات غير مستنفده لطبقة الأوزون..فى هذه الأطروحه تم اختيار مادة البروبان ( R290) وهو أحد أكثر المثلجات الغير مستنفدة لطبقة الأوزون وتم عمل محاكاه باستخدام برنامج محاكاه عمليه ASPEN HYSYS وبالتالى تم محاكاة وحدة الضغط المستخدمه للتثليج لأول مره باستخدام بيانات التصميم الفعليه واستخدام R290 كمثلج. تم اختيار البروبان كمثلج باستخدام نفس أبعاد المعدات الحاليه لتقييم ما اذا كان الهدف من عملية التثليج قد تحقق وما اذا كانت هناك حاجة الى معدات اضافيه. وشمل تطوير نموذج شبه تجريبى للضاغط للتنبؤ بأدائه. فى النهايه تقدم الرساله مقارنه بأداء المبردات وتقدم توصيات ليتم تطبيقها فى شركة(EPC) المصريه للبتروكيماويات . |
530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
Issues CD | صدر أيضًا كقرص مدمج. |
546 ## - LANGUAGE NOTE | |
Text Language | Text in English and abstract in Arabic & English. |
650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
Topical term or geographic name entry element | Petrochemicals |
Source of heading or term | qrmak |
653 #0 - INDEX TERM--UNCONTROLLED | |
Uncontrolled term | Chlorofluorocarbons |
-- | Ozone layer |
-- | Vapor Compression Cycle (VCC) |
-- | Propane (R290) |
-- | Freon |
700 0# - ADDED ENTRY--PERSONAL NAME | |
Personal name | Ahmed Soliman Mohamed Fawzy |
Relator term | thesis advisor. |
700 0# - ADDED ENTRY--PERSONAL NAME | |
Personal name | Ahmed Wafiq Abd elmohsen Abo Elnasr |
Relator term | thesis advisor. |
900 ## - Thesis Information | |
Grant date | 01-01-2024 |
Supervisory body | Ahmed Soliman Mohamed Fawzy |
-- | Ahmed Wafiq Abd elmohsen Abo Elnasr |
Discussion body | Ahmed Fayez Nassar |
-- | Mahmoud Gamal Eldien Badran |
Universities | Cairo University |
Faculties | Faculty of Engineering |
Department | Department of Chemical Engineering. |
905 ## - Cataloger and Reviser Names | |
Cataloger Name | Shimaa |
Reviser Names | Huda |
942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
Source of classification or shelving scheme | Dewey Decimal Classification |
Koha item type | Thesis |
Edition | 21 |
Suppress in OPAC | No |
Source of classification or shelving scheme | Home library | Current library | Date acquired | Inventory number | Full call number | Barcode | Date last seen | Effective from | Koha item type |
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Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 08.02.2025 | 90383 | Cai01.13.04.M.Sc.2024.Mo.S | 01010110090383000 | 08.02.2025 | 08.02.2025 | Thesis |