Air Conditioning and Refrigeration - Ozark Campus: Home

Guide to the NATE, ESCO, and EPA 608 Certification Exams streamlines HVACR exam prep for students and service/installation technicians alike. The text is divided into three parts: Study Guide, Questions (2,500+) and Answers. Each part is divided into the same sections and topics. Nearly every aspect of the NATE, ESCO and EPA 608 exams is covered across the guide. Study questions correspond with the guide, helping you better grasp and retain concepts. The fully updated 4th Edition now covers ESCO exams, along with the latest HVACR technologies. All study guide content and study questions have been reviewed, updated or revised for currency with exam content.

How often do we open the fridge or peer into the freezer with the expectation that we'll find something fresh and ready to eat? It's an everyday act - but just a century ago, eating food that had been refrigerated was cause for both fear and excitement. The introduction of artificial refrigeration overturned millennia of dietary history, launching a new chapter in human nutrition. We could now overcome not just rot, but seasonality and geography. Tomatoes in January? Avocados in Shanghai? All possible. In Frostbite, New Yorker contributor and cohost of the award-winning podcast Gastropod Nicola Twilley takes readers on a tour of the cold chain from farm to fridge, visiting off-the-beaten-path landmarks such as Missouri's subterranean cheese caves, the banana-ripening rooms of New York City, and the vast refrigerated tanks that store the nation's orange juice reserves. Today, nearly three-quarters of everything on the average American plate is processed, shipped, stored, and sold under refrigeration. It's impossible to make sense of our food system without understanding the all-but-invisible network of thermal control that underpins it. Twilley's eye-opening book is the first to reveal the transformative impact refrigeration has had on our health and our guts; our farms, tables, kitchens, and cities; global economics and politics; and even our environment. In the developed world, we've reaped the benefits of refrigeration for more than a century, but the costs are catching up with us. We've eroded our connection to our food and redefined what 'fresh' means. More important, refrigeration is one of the leading contributors to climate change. As the developing world races to build a US-style cold chain, Twilley asks: Can we reduce our dependence on refrigeration? Should we? A deeply researched and reported, original, and entertaining dive into the most important invention in the history of food and drink, Frostbite makes the case for a recalibration of our relationship with the fridge - and how our future might depend on it.

El autor, Craig Migliaccio, es un maestro licenciado en educación técnica y profesional de HVACR (calefacción, ventilación, aire acondicionado y refrigeración), chapa metálica y mantenimiento de edificios, en el estado de Nueva Jersey en los Estados Unidos de América. Craig también es propietario de un negocio de contratación de HVACR con más de 16 años de experiencia en el campo. La comunicación con técnicos en los Estados Unidos, Canadá y otros países llevó a Craig a desarrollar este libro como un recurso para aquellos que desean crecer en la comprensión de los sistemas de aire acondicionado y refrigeración. El objetivo es proporcionar una guía completa que incluya la comprensión de los refrigerantes y el ciclo de refrigeración hasta la carga y la resolución de problemas de estos sistemas basados en refrigerantes. Los videos de los procedimientos también se pueden encontrar en www.youtube.com/acservicetechchannel y en www.acservicetech.com.

This book contains step by step procedures that include preparing air conditioning and heat pump systems for refrigerant, measuring system refrigerant charges, and troubleshooting systems by measuring refrigerant charge indicators, air temperature measurements, and airflow. Manifold gauge sets, digital manifold sets, digital gauge stubs, and wireless probes are discussed and utilized in examples. This book differs from others in that it provides key insights into each procedure along with tool usage from a technician's perspective, in language that is easy to understand.

Concepts are examined such as refrigerant properties, the refrigeration cycle of an air conditioner and heat pump, energy transfer, airflow requirements, components within systems, and common problems.

Procedures Included:
Checking the Charge
Charging and Recovery
Airflow Measurements
Leak Testing and Vacuuming
Connection and Disconnection at Ports
Troubleshooting Refrigerant and Airflow Problems

El artículo 608 de la Ley Federal de Aire Limpio requiere que todas las personas que mantienen, prestan servicio, reparan o eliminan aparatos que contienen refrigerantes que agotan el ozono estén certificados en técnicas adecuadas de manejo de refrigerantes. Estos reglamentos se revisaron en el otoño de 2016 para abordar los HFC, los HFC, las tasas de fugas admisibles revisadas y las directrices ampliadas sobre el mantenimiento de registros. Sección 608 de la EPA del Instituto ESCO ha sido revisado para incorporar estas nuevas regulaciones. This book is also available in English. ESCO Institute s EPA Section 608 Preparatory Manual is a valuable tool that has been prepared to help students and technicians alike prepare for their EPA Section 608 certification examination. This 27-page manual reflects the NEW REGULATIONS that HVACR technicians must observe to be in compliance with the most recent changes and additions to EPA guidelines