The amount of heat energy wasted on the furnace wall is of concern to researchers who are trying to utilize the heat energy wasted from a furnace wall as a generator or source of electricity. The waste heat from the combustion in the furnace can now be used as a source of electricity. The waste heat is converted into electricity using a thermoelectric generator, the TEG generator is an electrical generator device that converts heat (temperature difference) directly into electrical energy. In this research, the heat used is the cylindrical wall of the furnace with variations in the size of the pump that flows the coolant to the waterblock, to determine the efficiency and magnitude of the power pump used to cool the hot side of the TEG, which produces a high temperature difference and also produces large electrical energy. thermoelectric generator module reused 4 pieces SP1848 27145 SA module.

No abstract

Indonesia as a country with the largest tropical climate in the world after Brazil, from 27 percent of the tropical zones in the world, Indonesia has 11 percent of tropical areas, including South Sulawesi which is a coffee-producing area which has an area of 690,283 hectares (ha) consisting of People's Plantations 656,067 ha. (95%), Private Basar plantations 19,077 (2.8%), State Large Plantations 15,139 ha (2.2%), South Sulawesi coffee producing areas, especially in Bantaeng spread across Tompo Bulu District. Most of the coffee in Bantaeng is grown in a mixed garden system. However, the drying process has a relatively long time span, so that the coffee harvest has a low level of dryness and the selling price is also not optimal. From these problems, the authors compare the temperature in the dryer with the greenhouse effect system and traditional drying, which is 10% - 30% degrees Celsius hotter using the greenhouse effect. For the efficiency level, the drying time between the greenhouse effect system and traditional drying is about 5-12 days faster using the greenhouse effect drying system.

The company carries out various ways to be able to meet customer demand quickly, one of which is to speed up the production process. In the printing process, the company encountered a problem, one of which was the high downtime caused by the setup process. The standard setup time determined by the company is 150 minutes but in fact the time required is 211.33 minutes. This shows that there are inefficient methods applied by the company. In this study, we will evaluate the work method to get errors so that the setup duration becomes high. This study will draw on the Modified Cooper Harper Scale and Single Minute Exchange of Dies (MCH-SMED) method to balance the workload between operators so that the setup time can be reduced. The MCH method is used to analyze the mental and physical workload on an operator based on a tree decision scale so that it can balance the workload between operators. SMED is used to identify on-line and off-line operations in the setup process. This study aims to produce a comparison of the standard setup times that have been set by the company and after evaluating the integration process of printing machine setup (MCH-SMED). The results of this study are to obtain a new sequence of operations that can reduce the duration of setup time to 143.19 minutes or be able to reduce the setup time by 32%.

Pengeringan adalah proses perpindahan panas dan uap air secara simultan yang memerlukan energi panas untuk menguapkan kandungan air. Energi panas ini biasanya bisa didapatkan dari sinar matahari. Namun ketika musim penghujan, kondisi ini menghambat proses pengeringan yang memanfaatkan sinar matahari, sehingga proses pengeringan membutuhkan waktu yang cukup lama. Maka dari itu diperlukan suatu alat bantu yang dapat mengeringkan baju tanpa tergantung pada sumber panas dari pancaran sinar matahari. Alat pengering Baju adalah Alat yang digunakan untuk mengeringkan pakaian dengan energi panas buatan, salah satu penghasil panas buatan adalah elemen pemanas atau yang sering disebut dengan heater. Elemen pemanas buatan yang digunakan pada penelitian ini adalah Electric Heater. Electric Heater ini dilengkapi dengan kipas yang dapat menghasilkan suhu dalam ruangan hingga ± 52,3º C sehingga panas yang dihasilkan Electric Heater dapat mengubah air yang terkandung dalam pakaian menjadi uap air yang kemudian akan dilepas ke lingkungan dengan bantuan kipas. Berdasarkan hasil perhitungan dan pengujian, Kemampuan alat ini mampu menguapkan massa air rata-rata 535.8 gram/jam dan mesin ini mencapai titik optimumnya untuk jumlah pengeringan pakaian yang dapat dikeringkan sebanyak 6 baju.