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NO Certificate / FREE HVAC Course For Beginners. Learn the necessary skills you need to start a career in the HVAC industry. Enroll in Course ...
Oct 19, 2021 — This course is designed for individuals interested in learning about Heating, Ventilation, and Air Conditioning (HVAC) systems for buildings.
Jun 14, 20151 answer
Where can I find free online course in HVAC or cooling rooms?
May 26, 2022 — We know that HVAC Design & Drafting course helps you core domains like ... materials used in HVAC Industry; Study of Overseas Drawings ...
Fundamentals, designs and HVAC systems with images and diagrams - Free Course. ... HVAC(heating ventilation and air conditioning) fundamentals and design ...
Critical Facility: Critical Infrastructure
This course will first introduce you to the fundamental concepts related to heating, ventilation, and air conditioning (HVAC). You will study the common sources of primary or secondary heat provided for Critical Operations. The course will discuss refrigerant-based cooling, water-based cooling, alternative cooling, and air circulation systems as well as teach you HVAC preventative maintenance. You will then study plumbing and water supply sources as well as the uses of compressed gas systems.Next, you will look into fire safety, systems, and equipment that are integral to a critical facility. The course will discuss the fire triangle and the primary functions of fire detection systems. You will look into the principles of fire suppression, sprinkler systems, and fire pump systems, as well as study structural and containment components. Finally, you will tackle the subject of personal safety, hazard analysis, and emergency response as well as learn the importance of immediately reporting an incident.As a critical infrastructure operator or manager, it is important that you have a deep understanding of the core mechanisms behind the heating, ventilation, and air conditioning system (HVAC). Knowing how water is brought in and managed and how wastewater is handled, as well as the systems and processes of fire prevention and fire suppression, are all essential. This course will teach you the necessary skills that you need in order to meet your responsibilities, all in just a few short hours.
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Oil in Refrigeration and Air Conditioning Systems
‘Oil in Refrigeration and AC Systems’ is a free online course that begins by introducing you to the safety devices on refrigeration plants and compressors, the single-stage vapour-compression refrigeration cycle, as well as fluorocarbon refrigerants based on methane and ethane. The types of leak tests (such as using soap, fluorescent dye and nitrogen) as well as electronic leak detectors (like ultrasonic, heated diode, heated electrolyte, infrared and corona discharge) are also vital to your knowledge. This course will teach you about leakage rectification systems and the recovery of refrigerant gas, as well as three basic methods of recovery (liquid, vapour and push-pull). Cautions when charging gas in a reefer and refrigerant system as well as the procedure for charging ship’s manual will also be covered in this course. You will learn about the HVAC (heating, ventilation and air conditioning) unit, details of HVAC gauges, types of manifold gauges (which include R410A, R22, and R134a) as well as how to connect HVAC gauges to refrigeration. The difference between ozone depletion potential (ODP) and global warming potential (GWP), as well as alternative, secondary, and future refrigerants, will also be explained. Do you know how air and oil are handled in a refrigeration and air conditioning system, how to safely isolate the system, as well as how to purge air from it? You will also learn about the management of oil return; the functions, working principles, and components of a single compressor system; and all about multi-compressor systems. The process of oil return in the suction collector and to the crankcases, centralized oil return as well as the efficiency of the oil separator using one separator per compressor will also be covered in this course. You will master high-pressure oil return, as well as the proper processes required when adding oil to the system. You will also learn about the steps involved in cleaning the oil strainer, as well as the key functions of oil in a refrigeration system and the classification of lubricating substances like natural mineral oil, synthetic oil and half-synthetic oil. The detrimental effects of oil in a system, once it gets past the compressor, as well as how oil contamination in the refrigerating system reduces its overall efficiency, will also be covered by the material. Furthermore, this course will help you get familiar with preventive treatment and methods to avoid the introduction of moisture into the system. The harmful effects of oil in a system, which include mechanical breakdown, modification of thermodynamic properties of the refrigerant, as well as decrease in the efficiency of exchangers, will also be covered. Learn how to test compressor suction as well as the functioning of discharge valves. Study the definition of and reasons for defrosting, as well as defrosting systems like water wash, hot gas, electric, manual shutdown and warm brine defrosting. The various methods to defrost brine systems, cargo fridge defrosting, as well as methods of defrosting will also be demonstrated to you.
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Diploma in Marine Refrigeration and Climate Control
Marine Refrigeration and Climate Control is a free online course that begins by introducing you to the concept of ventilation and types of ventilation used on cargo ships, as well as to the different types of ‘sweat’ that occur. Engine room ventilation arrangement, as well as the importance of the engine room ventilation systems, will be covered in this course. You will learn about the difference between fans, blowers and compressors, as well as the factors to consider when selecting a fan and fan maintenance. The material will teach you about the maintenance and monitoring of shipboard ventilation components, as well as the working principles of a vapour-compression refrigerant cycle. The relationship between the refrigerant cycle and coefficient of performance, as well as the vapour compression cycle, will also be covered. You will be introduced to the brine and direct expansion system, as well as the main components of a direct expansion refrigeration system. You will also learn about the operations of a refrigeration system, as well as safety devices needed to protect compressors. The course then explains the concept and functions of the ‘cascade system’, as well as the concepts of ‘coupling temperature’ and ‘optimum coupling temperature’. You will learn about the functions of the multiple compression and evaporator system. The features, functions, components, as well as advantages of the indirect expansion system, will also be covered. You will be taught about the preparations of holds for loading refrigerated cargo, precautions for loading, handling refrigerated cargo, as well as the processes for the inspection of cargo. The principles of air-conditioning, the psychometric properties of air, as well as comfort conditions and control of humidity will also be tackled. You will study airflow, air-conditioning capacity, and air-conditioning systems, as well as the components of the direct expansion air-conditioning system. The material will teach you about different types of compressors and compressor designs, as well as the reciprocating compression efficiency and lubrication system. The components of a reefer system, as well as the functions of the condenser and evaporator, will be analyzed. Furthermore, this course will help you get familiar with the patterns of coolant flow, double pipe heat exchanger, as well as heat exchanger maintenance. You will also learn about the handling of oil in a system, safe isolation of a system, as well as management of oil return. The single compressor and multi compressor system, as well as the processes of adding oil to the system, will be detailed, and you will get familiar with how oil contaminates a reefer system, the detrimental effects of oil in a system and the key functions of oil in a refrigeration system. You will learn about four main techniques selected in the design of separators, as well as how oil separators work. The testing of compressor discharger and suction valves, as well as reasons for defrosting and defrosting systems, will also be explored. This free online course will be of great interest to marine supply chain students and professionals with an interest in marine refrigeration and climate control.
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