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"Radiant infant warmer adalah perangkat medis yang menjaga bayi tetap hangat sekaligus memungkinkan intervensi medis tanpa mengganggu akses tenaga medis. Perangkat di pasaran umumnya membutuhkan daya minimal 700 Watt, berat 120 kg, dan harga sekitar Rp 40 juta. Studi ini bertujuan mengembangkan prototipe radiant infant warmer yang lebih murah, ringan, dan mampu menjaga suhu bayi dalam rentang 35-36ºC. Prototipe dibuat menggunakan material kayu multiplex dan dikendalikan mikrokontroler yang mengatur daya lampu pemanas berdasarkan sensor DS18B20. Pengujian dilakukan pada suhu ambient 26ºC dan kelembapan 62%, menggunakan lampu PX Infrared 100 Watt dan PX Spot Beam 60 Watt. Lampu dipasang pada reflektor downlight 130 mm. Hasil menunjukkan lampu PX Infrared mencapai suhu 35ºC di titik tengah dalam 2 menit 50 detik dengan daya awal 101,5 Watt, lalu mencapai kondisi tunak pada rata-rata 35,41ºC dengan daya 36,5 Watt. Lampu PX Spot Beam membutuhkan waktu 11 menit 25 detik, dengan untuk mencapai kondisi tunak dengan rata-rata temperatur 35,71ºC dengan daya 57,5 Watt. Distribusi panas lebih merata pada Spot Beam, sedangkan Infrared lebih cepat memanaskan. Prototipe ini berhasil dibuat dengan biaya Rp 2.344.150.

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A radiant infant warmer is a medical device designed to keep infants warm while allowing medical interventions without obstructing access for healthcare providers. Commercial devices typically require a minimum of 700 watts of power, weigh 120 kg, and cost around Rp 40 million. This study aims to develop a prototype of a radiant infant warmer that is more affordable, lightweight, and capable of maintaining an infant’s temperature within the range of 35–36°C. The prototype was constructed using multiplex wood materials and controlled by a microcontroller that adjusts the heater lamp's power based on DS18B20 sensor readings. Testing was conducted at an ambient temperature of 26°C and 62% humidity, utilizing a 100-watt PX Infrared lamp and a 60-watt PX Spot Beam lamp. The lamps were mounted on a 130 mm downlight reflector. Results showed that the PX Infrared lamp reached 35°C at the center point in 2 minutes and 50 seconds with an initial power of 101.5 watts, then hold steady at an average temperature of 35.41°C with a power of 36.5 watts. The PX Spot Beam lamp required 11 minutes and 25 seconds to get steady at averaging temperature 35.71°C with a power of 57.5 watts. The Spot Beam provided more uniform heat distribution, while the Infrared lamp heated faster. The prototype was successfully built at a  cost of Rp 2,344,150."

"Bayi prematur mudah kehilangan panas, salah satunya saat dilakukan tindakan invasif pengambilan darah. Penelitian mengunakan crossover design (desain ekperimen kontrol silang) dimana melakukan 2 uji coba intervensi yang bertujuan membandingkan 2 tindakan yang berbeda pada sampel yang sama. Responden dibagi menjadi 2 kelompok A & B masing-masing 18 bayi prematur. Analisis menggunakan uji statistik independent T,test. Tindakan invasif di inkubator pintu terbuka nilai p 0,001, secara statistik terdapat perbedaan rerata yang bermakna terhadap penurunan suhu tubuh bayi prematur; sedangkan radiant warmer nilai p 0,001 secara statistik terdapat perbedaan rerata yang bermakna terhadap peningkatan suhu tubuh bayi prematur sebelum dan sesudah tindakan invasif pengambilan darah di bawah radiant warmer. Radiant warmer mampu menghindari terjadinya hipotermia pada bayi prematur saat dilakukan tindakan invasif. Radiant warmer sebagai pemancar hangat dapat direkomendasikan untuk melakukan tindakan invasif pengambilan darah, tetapi tidak digunakan untuk perawatan secara rutin karena dapat meningkatkan IWL.

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The premature infants tend to heat loss quickly. It can be occurred when they get invasive procedure venous puncture. The research uses crossover design by conducting 2 intervention tests to compare 2 different treatment to the same sample. This research involves two group of respondents; A and B with consists of 18 premature infants in each group. The process of data analisys uses statistical Independent T.Test. Intervention are conducted in open incubator p value 0,001 statistically range related to heat loss in premature infants. On the other hand, radiant warmer p value 0,001 statistically refers to the defferent range of heat gain before and after invasive procedure for venous puncture is given radiant warmert. Radiant warmer prevent the premature infant from hypothermia during invasive procedure. As its benefit, it becomes the preferable way to do invasive procedure. However, it is inadvisable for routine care of newborn infant since it can increase IWL."

"ABSTRAKTesis ini membahas penelitian yang telah dilakukan untuk membuatperangkat lunak simulasi berbasis Matlab Simulink untuk pembangkit uap.Pembangkit uap ini bekerja dengan 72% kualitas uap, 1.2% kandungan oksigen,laju aliran uap didesain maksimum 3600 Barrel per hari dan laju aliran gas bahanbakar didesain maksimum 1300 MSCF per hari .Perangkat lunak simulasi pembangkit uap terdiri atas TungkuPembakar, Aliran Bahan Bakar, Aliran Air Umpan, Konveksi, Radian dan AliranUap. Di dalam bagian-bagian tersebut, prinsip termodinamika dan perpindahanenergi panas seperti konduksi, konveksi dan radiasi diaplikasikan untukmenghitung nilai tekanan, nilai suhu dan nilai laju aliran.Proses validasi dilakukan pada kondisi stabil dan kualitas uap 72% telahtercapai kepada 10 parameter proses penting pembangkit uap hasil simulasi.Persentase kesalahan yang dihasilkan dari simulasi Beda Tekanan Orifis BahanBakar Gas : 2,39% , Tekanan Bahan Bakar Gas : 1,37%, Suhu Gas Bahan BakarGas : 5,95%, Laju Aliran Gas Bahan Bakar : 1,25%, Beda Tekanan Orifis AirUmpan : 1,94%, Tekanan Air Umpan : 1,54%, Laju Aliran Air Umpan : 0,92% ,Beda Tekanan Orifis Uap : 3,26%, Tekanan Keluaran Uap : 1,93% and KualitasUap : 0,05% .

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ABSTRACTThis paper describes the work done in order to make Matlab Simulinkbased steam generator simulator in simulation of a steam generator. The steamgenerator is operated with steam quality of 72%, O2 content is 1.2%, designsteam volume flow is 3600 barrel per day at at a maximum and design fuel gasvolume flow is 1300 MSCF per day at at a maximum.The steam generator simulation program is consisting of Burner, Radiant,Convection, Exhaust Stack, Feedwater Pump Discharge and Steam Discharge.Within the components, thermodynamics and heat transfer principles such asconduction, convection and radiation were applied to compute the pressurevalues, temperature values and flow rate values.The validation process has been done with steam generator is operating onsteady steady state and steam quality target of 72% has been achieved to the 10important process parameters of the steam generator. The error percentageresulted from simulation of Fuel Gas Orifice Differential Pressure : 2.39%, FuelGas Pressure : 1.37%, Fuel Gas Temperature : 5.95%, Fuel Gas Flow Rate :1.25%, Feedwater Orifice Differential Pressure : 1.94%, Feedwater Pressure :1.54%, Feedwater Flow Rate : 0.92%, Steam Orifice Differential Pressure 3.26%,Steam Discharge Pressure 1.93% and Steam Quality : 0.05%."