Liquid smoke can be produced by using the pyrolysis process. Biomass, as the raw material, is heated in a pyrolysis reactor to generate pyrolysis vapor. The pyrolysis vapors coming from the reactor are condensed in a liquid collection system to produce liquid smoke. A liquid collection system is a device used to convert smoke into liquid. Liquid smoke is often also called bio-oil, which is widely used as a fuel, as a preservative, and as other chemical substances. The objective of this paper was to provide the latest information on improving the liquid collection system from existing papers, and conclude with some inputs and application strategies. Studies were performed using the product parameters, equipment, and operational conditions referred to in the existing journal articles. Using a proper liquid collection system will give a better result in the liquid collection process.

MATEC Web of Conferences, open access proceedings in Materials science, Engineering and Chemistry

The air conditioning system is the most common way to provide comfortable room temperature for its inhabitants. However, the energy required for its operation is extremely high and cost-intensive. Therefore, a more efficient HVAC system with a lower energy consumption is desirable. The experimental results and performance analysis demonstrated that the outlet air temperature through the evaporator side of HPHE (precooling) has the potential to save some amount of energy utilizing an HVAC system equipped with HPHE. This research aims to study the performance of HPHE with the precooling process applied in commercial room HVAC system applications. This research on the utilization of HPHE for heat recovery in air conditioning systems was carried out with variations in temperature of fresh air intake ranging between 32–42 ℃. The airflow speed was set constant at 1.0 m/s. This experiment demonstrated the highest effectiveness at a value of 21%. The HPHE heat recovery analysis results show that the best heat recovery performance is achieved when the fresh air intake temperature exceeds the exhaust air leaving the room. The phenomenon was compared at a low fresh air intake temperature of 32 ℃, which succeeded in recovering 0.05 W, and when the temperature rose to 42 ℃, 0.21 W was recovered.

Sawah tadah hujan merupakan sistem pertanian yang mengandalkan air hujan sebagai sumber air untuk pengairan sawah. Sawah tadah hujan dilakukan dengan cara menanam tanaman pada awal musim hujan, kemudian ketika air hujan sudah cukup banyak, air hujan tersebut ditampung di sawah dan digunakan sebagai sumber air untuk pengairan selama musim kemarau. Desa Tualang Baru merupakan desa dengan keadaan sawah tadah hujan dan desa pelaksanaan pengabdian. Desa ini memiliki lahan sawah dengan area ± 200 hektar dan salah satu desa penghasil padi di kecamatan Manyak Payed. Permasalahan petani setempat dengan keadaan sawah tadah hujan yaitu membutuhkan suatu sistem pengairan yang mampu mengairi sawah di musim kemarau. Pengabdian ini bertujuan untuk menyuplai air secara konstan pada tanaman, dan meningkatkan perekonomian dengan produksi padi/beras menambah. Metode pengabdian ini memiliki beberapa tiga tahap. Tahap pertama persiapan berupa survei lokasi, perencanaan dan persiapan hardware. Tahap kedua pelaksanaan pelatihan, berupa pelatihan pemasangan, pelatihan operasional alat dan pelatihan proses perawatan. Tahap ketiga yakni evaluasi kelayakan sistem dan perbaikan sistem. Hasil survei lokasi diperoleh kelayakan pemasanagan pompa submersible dapat diandalkan untuk sistem pengairan. Pompa tersebut memanfaatkan sumber energi surya yang melimpah dengan menggunakan teknologi fotovoltaik. Pengabdian yang telah dilaksanakan menunjukkan peningkatan perekonomian khususnya di bidang pertanian dalam mengelola lahan persawahan lebih mudah, murah dan efektif. Sistem pengairan ini juga dinilai bermanfaat, sangat ramah lingkungan dan efisien dalam pengembangan teknologi energi baru terbarukan