Da: PBShop.store US, Wood Dale, IL, U.S.A.
PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.
Da: PBShop.store UK, Fairford, GLOS, Regno Unito
EUR 24,57
Quantità: 15 disponibili
Aggiungi al carrelloPAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.
Da: Forgotten Books, London, Regno Unito
EUR 15,95
Quantità: Più di 20 disponibili
Aggiungi al carrelloPaperback. Condizione: New. Print on Demand. This book investigates the safety of electric motors used in the mining industry by testing their protective devices against explosions caused by methane-air mixtures. The author, who is part of the Bureau of Mines, presents the results of over 200 tests, meticulously detailing the procedures, conditions, and outcomes. The results show that the type of protective device, the motor's operating state, and the presence of coal dust can significantly affect the severity of explosions. The book concludes that the tested protective devices can prevent ignition of the external methane-air mixture effectively when the motor is at rest or running without a fan, highlighting the importance of proper motor operation and maintenance in ensuring safety in hazardous mining environments. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.