different types of air handling unit

With the X-CUBE compact TROX has created a ready-to-operate and pre-configured air handling unit that combines the excellent features of the X-CUBE in the smallest of spaces. These units handle volume flow rates of 600 to 6,000 m³/h and offer a heat recovery efficiency of over 80 % (dry, to EN 308), hence they are the ideal solution for small and midrange applications. TROX offers nine different X-CUBE compact units with a choice of two different heat recovery systems..Top performance, small size Volume flow rates of 600 to 6,000 m³/h Powerful EC fans also for high external differential pressures High level of hygiene (conforms to VDI 6022) Heat recovery with heat wheel or counter flow plate heat exchanger Air filtration with TROX minipleat or NanoWave filters Ready-to-operate unit (plug and play) Operating side can be changed at a later stage Integral, bus compatible control technology Advantages at a glance Seamless integration into modern building management systems

Home / What we do / Asset Management Training / Engineering, Technical and Electrical / Commercial & Industrial HVAC Systems and Principles This 3 day HVAC course has been specifically tailored for Maintenance Technicians & Tradesmen, to provide them with the knowledge necessary to confidently approach a range of different air conditioning systems and to carry out effective fault diagnosis, repair, service and maintenance. You will also be provided with the skills necessary to deal confidently with outside air-conditioning contractors and witness system commissioning. To teach participants the basic principles of Air Conditioning To provide participants with an understanding of the Vapour Compression Refrigeration Cycle To provide an understanding of Air Filtration Methods To demonstrate an understanding of Psychrometrics (Properties of air) To explain the purpose of the most common system components To provide a thorough explanation of Air Handling units and the processes taking place within AHU’s

To Provide an overview of VRF (VRV) Systems To give participants an understanding of heat pump systems and components
why put ac unit on roof To provide the knowledge necessary for participants to make a logical selection of equipment
how to de-ice ac unit To ensure participants practice good housekeeping rules with regard to the environment and their own safety
best indoor ac units Demonstrate the benefits to participants of logging parameters and keeping records such as a commissioning sheet To provide participants with the knowledge necessary to maintain a variety of types of air conditioning plant and to be able to make correct fault diagnosis and effect repairs Provide participants with the ability to confidently deal with outside air-conditioning contractors.

To ensure that participants are able to witness system commissioning. This course is available as an on-site customised course Date: 18, 25 & 26 October 2016 Day 1: Basics of the Vapour Compression system On completion of this unit, participants should be able to: Explain in simple terms with the aid of practical demonstrations the basic principles of refrigeration Explain the various processes a refrigerant goes through while absorbing and rejecting heat Practice good housekeeping rules with regard to the environment and their own safety Explain the purpose of the most common system components Understand the safety controls in ac units Work safely on Air Conditioning Units Understand the dangers involved. Overview of ODS and F Gas Legislation Understand the differences between CFC, HCFC & HFC Refrigerants Understand the alternative Natural refrigerants (Ammonia, CO2 & Hydrocarbons) Demonstrate an understanding of the information on unit rating plates

Day 2: Air Conditioning and Heat Pump Systems, VRF, Metering Devices, Head Pressure Control, Compressors, Superheat and Sub cooling. Explain the operation of a heat Pump Circuit Describe the Purpose and Operation of all Components in a heat Pump Demonstrate an Understanding of the control strategies in Air conditioning systems Identify the position and purpose of sensors in ac units Identify the different styles of Split System and the advantages of each system Principle of operation of VRF Systems Demonstrate a basic understanding of Humidity Control Show a practical Understanding of Air Conditioning Load Calculation Identify types of metering device Demonstrate an understanding of Thermostatic Expansion Valves, Electronic Expansion Valves and Capillary Tubes Understand the importance of Head Pressure Control Identify methods of head pressure control Understand the relationship of head Pressure control to system performance

Understand the operation of Reciprocating, Rotary, Scroll and Screw compressors Understand the importance of Superheat and Sub cooling Day 3: Maintenance and service procedures, Refrigerants, Vacuuming and dehydrating systems, pressure Testing, Glide and Slide (Fractionation) On completion of this unit participants should be able to: Identify how and what parameters should be logged and explain the importance of keeping records such as commissioning sheets Demonstrate sufficient knowledge to carry out simple fault-finding and maintenance tasks Clean and replace Air Filters Understand how to read refrigerant gauges and analyse the information Demonstrate how to measure Sub cooling and superheat Demonstrate an understanding of fault code analysis Know the dangers, both personal and Environmental, of refrigerants Understand Glide and Slide in both Understand the importance of Dehydration and how it is achieved in Vapour compression Systems