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"Konsumsi energi pada bangunan pada era sekarang ini telah mencapai porsi 41% dari konsumsi energi dunia, jauh melebihi energi bagi transportasi dan aktifitas manusia lainnya. Hal ini mendorong Green Building Council Indonesia melakukan terobosan standard bagunan hemat energi dikawasan Indonesia. Standardisasi yang dilakuakan melewati beberapa tahapan dan salah satunya melaui tahapan simulasi. Pada tugas akhir ini, reka simulasi dilakukan sebagai sebuah metode audit konsumsi energi pada bangunan, dengan bantuan sistm komputer yakni perangkat lunak EnergyPlus dan perangkat optimasi GenOpt, sehingga didapatkan hasil simulasi optimal penggunaan energi bagi sebuah bagunan. Variable envelope bangunan berupa overhang dan kacafilm dipilih sebagai objek teroptimasi untuk menurunkan beban energi operasi pada bangunan tersebut. Parameter pencahayaan bagunan, struktur material bangunan, pengkondisian udara, data cuaca, okupansi bagunan dengan sejumlah orang didalamnya serta berbagai peralatan elektronik menjadi parameter yang mendukung simulasi ini. Hasil simulasi dan optimasi menunjukkan bahwa, penggunaan overhang secara optimal dapat menurunkan beban energi operasi sebesar 19,82% sementara penggunaan kaca film secara optimal dapat menurunkan beban energi operasi sebesar 27,10%. Akan tetapi, penggabungan keduanya yang memiliki guna yang sejalan justru hanya mampu menurunkan beban energi operasi sebesar 25,63%. Kesimpulan dari penelitian ini adalah bahwa sangat penting malakukan optimasi dan simulasi konsumsi energi pada bangunan sebagai langkah penghematan energi yang optimal dan profitable.

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Buildings energy consumption in this era has reached 41% share of world energy consumption, far exceeding the energy for transportation and other human activities. It is encouraging Green Building Council Indonesia made a breakthrough energy-efficient buildings standard of Indonesia area. Standardization had been done through several stages and one of them through the stages of the simulation. Overhang of the building envelope and the sunscreen is selected as an object optimized to reduce the energy load on the building operations. Parameter lighting buildings, structural building materials, air conditioning, weather data, occupancy buildings with a number of people inside as well as a variety of electronic equipment to support the simulation parameters. Simulation and optimization results show that the optimal use of the overhang can reduce energy expenses by 19.82% while the optimal use of window film can reduce operating expenses by 27.10% of energy. However, the incorporation of both of which have a line for it is only able to reduce operating expenses by 25.63% of energy. The conclusion of this study is that it is very important to do optimization and simulation of energy consumption in buildings as energy saving for optimal choices and profitable."

"Inefficient energy use in buildings is both increasingly expensive and unsustainable. Indeed, the reduction of the energy consumption of existing buildings is as least as important as the design of new low-energy buildings. Controlling energy use is one thing, but it is important to assess or estimate it, and to understand the range of interventions for reducing its use and the methods for assessing the cost effectiveness of these measures. This comprehensive guide clearly and concisely covers the various issues from a theoretical standpoint and provides practical, worked examples where appropriate, along with examples of how the calculations are carried out. Topics covered include:where and how energy is used in buildings energy audits measuring and monitoring energy use techniques for reducing energy use in buildings legislative issues.It provides a template for instigating the energy management process within an organization, as well as guidance on management issues such as employee motivation, and gives practical details on how to carry it through. This book should appeal to building managers and facilities managers and also to students of energy management modules in FE and HE courses."

"Energi listrik sangat penting dalam aktifitas di gedung perkantoran, hal ini sangat menunjang dalam operasional di gedung perkantoran. Peralatan seperti pengkondisian udara merupakan peralatan yang banyak mengkonsumsi energi listrik. Hampir sekitar 57% penggunaan energi listrik digunakan untuk sistem pengkondisian udara. Hal ini merupakan suatu pemborosan energi jika tidak mempergunakan sistem dengan baik dan efisien. Untuk menanggulangi masalah tersebut dilakukan efisiensi energi. Salah satu metode yang sekarang dipakai untuk mengefisienkan pemakaian energi adalah konservasi energi. Konservasi energi adalah peningkatan efisiensi energi yang digunakan atau proses penghematan energi. Dalam proses ini meliputi adanya audit energi yaitu suatu metode untuk menghitung intensitas konsumsi energi suatu gedung atau bangunan. Berdasarkan audit awal terlihat bahwa pemakaian energi listrik lebih besar dipergunakan untuk sistem tata udara (57%) dan sistem pencahayaaan (13%). Berdasarkan hasil audit energi rinci, diperoleh harga IKE untuk system pencahayaan adalah masih lebih besar dari standard yaitu sebesar 15 Watt/m². Peluang Hemat Energi (PHE) pada audit energi di sistem tata udara yaitu dengan cara pembersihan pada unit AHU yaitu meliputi pembersihan saringan udara (filter), sudut kipas, sirip (fin) evaporator dan kisi keluaran (grill) pada unit-unit AHU. Peluang Hemat Energi (PHE) yang kedua adalah dengan Mengatur (setup) temperatur air keluar (Leaving Chilled Water Temperature = LCWT) pada chiller.

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The electricity is very important element to support all activities in office building. The equipments like air condition (AC) needs more electricity to be operated. There is almost 57% of elecricity is used to support this system (air condition). This percentage desribes that air condition system is an equipment that needs more electricity in the office and its become inefficiency in using electricity. To take an overcome for this problem, we need to do efficiency in using energy. One of the method that now used to efficient the energy is called 'energy conservation'. Generally, this method is used to saving the energy. There is one thing that must be done in this activity, which is 'energy audit'.

In this process, audit energy is one of method to calculate Intensity Consume Energy (IKE) at on particular building. The first preliminary audit shown that more energy, which is 57% is used to operate the air condition (AC) system and 13% is used to operate the lighting system. Based on details audit, IKE for lighting system is still higher/bigger from the maximum standard, which is 15 Watt/m². The opportunity of saving energy on audit energy in air condition system is done by cleaning up the AHU unit that consist of: cleaning up the filter, the propeller corner, fin, the evaporator and the grill in AHU units. The second Conservation Opportunity of Energy (COE) to saving the energy is done by set up the Leaving Chilled Water Temperature (LCWT)."