Calliandra wood pellets are a key alternative for utilizing the plentiful Calliandra biomass as a sustainable, efficient, and low-emission heat energy source in a small-to-medium-sized furnace. Consequently, the purpose of this study is to examine the performance and emissions of a 200 kW furnace that utilizes Calliandra pellets. The popularity of the pellets produced from Calliandra wood has surged due to their exceptional qualities. These studies were conducted using a 200 kW pilot-scale furnace, and the findings were compared between those obtained from experiments and those from a numerical model created with ANSYS FLUENT. The effects of the air-to-biomass ratios ranging from 5.7 to 9.0 on the heat flow, combustion characteristics, and cold gas efficiency were investigated, and the best use of each ratio was determined. The temperatures measured at the tops and bottoms of the height of the furnaces exhibited a broad range from 430 °C to 650 °C and 440 °C to 700 °C, respectively. A greater air-to-fuel ratio increases combustion quality but has little influence on the furnace’s overall efficiency. In the meantime, it will be interesting to see how the performance of the Calliandra pellet combustion furnace could be improved in the future by fixing the airways and perforated plates as well as mixing air and fuel in the combustion chamber.
Ashtāṅgā Yoga Ashram adalah sebuah bangunan retret yang mewadahi latihan dan pendalaman ashtāṅgā yoga. Antusiasme pegiat yoga yang tinggi di Kabupaten Karanganyar mendasari dirancangnya bangunan ini. Artikel ini membahas pemikiran dasar perancangan tentang bagaimana praktik ashtāṅgā yoga mempengaruhi rancangan dari bangunan ini. Bangunan Ashtāṅgā Yoga Ashram dibutuhkan karena tidak terdapat banyak tempat di Indonesia di mana orang-orang dapat secara spesifik mempelajari laku ashtāṅgā yoga yang terdiri dari delapan elemen (yama, niyama, asana, pranayama, pratyahara, dharana, dhyana, samadhi). Setiap elemen dari ashtāṅgā yoga tersebut memiliki tujuan khusus yang ingin dicapai. Berdasarkan karakter tersebut, setiap ruangan yang digunakan untuk berlatih pada bangunan ini harus didesain agar memiliki spesifikasi dan karakteristik khusus yang dapat mangokomodir kedelapan elemen dari ashtāṅgā yoga secara optimal. Didirikannya bangunan ini dapat menambah alternatif tempat bagi orang-orang untuk mendalami praktik yoga.
A hospital is a health care institution providing patient treatment, with a complex building system. In Indonesia, there is a regulation for hospital building system set by The Republic of Indonesia's Minister of Health arranging laws on hospital zoning plan, patient flow management, room requirement and size spesification, and structural and utilities system plan. Banyumas Dictrict Hospital is classified as type B academic hospital established in 1925. In order to develop hospital facilities and increase hospital bed capacity, Banyumas District Hospital demands area expansion and new buildings construction. This periodical development leads tol building system problems as zoning, hospital entrance and accessibility, and building flow system. Banyumas District Hospital is in need of post-occupancy-evaluation which is used as redeseign method, with the intention of restoring hospital to the regulation on hospital building by Minister of Health. Redesign result realized through the processing siteplan design, building design, and material application.
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