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Analisis Rasio Kompresi AC Split R32 yang Diretrofit R290 di Ruang Akomodasi Kapal Ulum, Rizka Noor Miftakhul; Sekti, Irsat Surya; Noviarianto, Noviarianto; Nugroho, Anang Budhi; Supardi, Supardi
Jurnal Maritim Polimarin Vol. 11 No. 1 (2025)
Publisher : PPPM Polimarin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52492/jmp.v11i1.136

Abstract

Air conditioning (AC) systems play a crucial role in maintaining thermal comfort within ship accommodation spaces, especially during operations in tropical climates. However, the use of refrigerants such as R32 raises environmental concerns due to its relatively high Global Warming Potential (GWP). This study aims to analyze the impact of retrofitting 40% by mass of R290 into a 1-HP split AC system originally designed for R32, focusing on the resulting compression ratio and cooling performance. The experimental method involved varying the inlet air temperatures to the evaporator (23°C, 25°C, and 27°C) and condenser (30°C and 35°C). Suction and discharge pressures of the compressor were measured to calculate the compression ratio. The results showed that R32 yielded the highest compression ratio of 3.09 and the lowest at 2.87, while R290 produced a maximum of 2.86 and a minimum of 2.60. These differences reflect the influence of each refrigerant’s thermodynamic properties on compressor operation. R290 demonstrates potential as an environmentally friendly alternative for marine air conditioning systems, although technical adjustments are required to maintain optimal system performance.
INOVASI PEMASARAN DIGITAL DAN KEMASAN PRODUK UMKM MAKANAN RINGAN UNTUK DAYA SAING PENJUALAN Widianti, Nurita; Widyaningrum, Novita; Rahayu, Sri Tutie; Sekti, Irsat Surya; Ulum , Rizka Noor Miftakhul; Asrifah, Lia Retian
COMMUNITY : Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2026)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/community.v6i2.10120

Abstract

This Community Service Program (PKM) was implemented to address the challenges faced by the SME CV. Sido Makmur in Bandungan Subdistrict, Semarang Regency, which continues to face obstacles in conventional marketing, simple packaging, limited production technology, and manual financial record-keeping. Implementation methods included field surveys, situation analysis, interviews, solution planning, training, digital marketing mentoring, packaging design development, the application of appropriate technology, and the implementation of an Android-based financial application. The results of the activities showed a significant improvement in five key aspects of the partner’s business. On the production side, the use of a mechanical mixer replaced manual mixing, thereby improving efficiency and consistency in quality. In terms of packaging, products that were previously plain now feature informative designs with brand labels, ingredient lists, and moisture-resistant materials. Digital marketing, which was previously limited to local wholesale stores, has expanded through online marketplaces and social media, broadening market reach. Financial management, which was previously manual, is now more accurate with the SI-APIK app, supporting automated record-keeping and routine reporting. Additionally, human resource capacity has increased through digital literacy and managerial training. Overall, the integration of innovations in digital marketing, packaging design, production technology, and app-based financial systems has proven to strengthen the competitiveness of partner SMEs. This program not only resolves operational challenges but also provides a practical foundation for business sustainability, while making a tangible contribution to SME empowerment and the strengthening of the local economy. ABSTRAK Program Pengabdian kepada Masyarakat (PKM) ini dilaksanakan untuk menjawab persoalan yang dihadapi oleh UMKM CV. Sido Makmur di Kecamatan Bandungan, Kabupaten Semarang, yang masih terkendala dalam pemasaran konvensional, kemasan sederhana, keterbatasan teknologi produksi, serta pencatatan keuangan manual. Metode pelaksanaan meliputi survei lapangan, analisis situasi, wawancara, perencanaan solusi, pelatihan, pendampingan digital marketing, pengembangan desain kemasan, penerapan teknologi tepat guna, serta implementasi aplikasi keuangan berbasis Android. Hasil kegiatan menunjukkan adanya peningkatan signifikan pada lima aspek utama usaha mitra. Dari sisi produksi, penggunaan mixer mekanis menggantikan pengadukan manual sehingga meningkatkan efisiensi dan konsistensi kualitas. Pada aspek kemasan, produk yang sebelumnya polos kini memiliki desain informatif dengan label merek, komposisi, dan material tahan lembap. Pemasaran digital yang semula terbatas pada toko grosir lokal berkembang melalui marketplace dan media sosial, memperluas jangkauan pasar. Pengelolaan keuangan yang sebelumnya manual kini lebih akurat dengan aplikasi SI-APIK, mendukung pencatatan otomatis dan laporan rutin. Selain itu, kapasitas sumber daya manusia meningkat melalui pelatihan literasi digital dan manajerial. Secara keseluruhan, integrasi inovasi dalam pemasaran digital, desain kemasan, teknologi produksi, dan sistem keuangan berbasis aplikasi terbukti memperkuat daya saing UMKM mitra. Program ini tidak hanya menyelesaikan permasalahan operasional, tetapi juga memberikan fondasi praktis bagi keberlanjutan usaha, sekaligus berkontribusi nyata terhadap pemberdayaan UMKM dan penguatan ekonomi lokal.