![]() ![]() Hence why each of these zones will require it’s own dedicated DX air conditioning system. A customer dining area will call for more moderate conditions (temperature, humidity, etc.) than the kitchen or storage areas, therefore a restaurant will have different zones.Įssentially any space that requires different conditions in terms of temperature, humidity, pressure, filtration and/or is subject to large variations in heat loads should be considered a separate zone.Įach thermal zone should be controlled separately to ensure the HVAC system can adequately perform and provide intended comfort.will require different indoor conditions (including temperature, pressure, filtration, etc) compared to other spaces, thus constituting separate zones. Various rooms in a hospital, including operation theatre, testing lab, isolation room, etc.A meeting room that may have 30 people for a weekly meeting, but only a few people randomly throughout the rest of the week will require a separate variable controller for this space.in a business will have a larger heat load than the rest of the office. The room containing electronic office equipment such as printers, copiers, fax machines (yes, they are still around), etc.In these zones, conditions (such as temperature and humidity) can be maintained using a single sensor (such as a temperature sensor or thermostat).Įxamples of different thermal zones include: ![]() A thermal zone is a single space, or number of spaces, within a building or complex where the HVAC requirements are sufficiently similar. Secondly, DX units are most suitable for air conditioning single thermal zones. Therefore, direct expansion cooling may not be suitable for large buildings or complexes. Firstly, there is a practical limitation to the length of refrigeration pipework, even if it is well insulated. Interestingly, there is a wide range of Dx air conditioners that can be used for both commercial or residential application.ĭX type air conditioners are typically used for small buildings, single-level complexes, and homes for many reasons. Dx units include room air conditioners, split systems, ducted systems and package type units.Ī Dx air conditioning system is often just a technical term for a standard home air conditioner or commercial HVAC system. ![]() Hence the term direct expansion.ĭirect expansion is the most commonly used type of air conditioning. Refrigerant expands during the process and refrigerant is controlled by an expansion valve. Heat is directly exchanged with refrigerant passing through a local cooling coil. In Dx units, air is directly cooled in, at the boundary of, or directly adjacent to the room being conditioned. All arrangements essentially come down to two primary methods Direct Expansion systems or Central Air Conditioning systems.ĭX stands for direct expansion. ![]() There are many ways for standard air conditioning components to be arranged in order for the equipment to provide heating or cooling to a building. We’ll help provide answers to these key questions, and more, in order to help your understanding on the topic in order to know exactly what DX air conditioning is. In this article, we will help answer some frequently asked questions It also helps the decision-making process as you have more information on board if/when looking to buy an air conditioner. Some basic knowledge allows for a comprehensive conversation with an aircon technician and ensures you truly understand what is being said. While a good air conditioning contractor should explain things in a logical way, a little knowledge really does go a long way. While it is not essential to know exactly what air conditioning is, or know all the right words to use, it certainly helps when having a conversation with an HVAC professional. Sometimes the terminology is used correctly, sometimes it is used incorrectly. People in-the-know about heating, ventilation and air conditioning (HVAC) may also use these terms.Ĭustomers will occasionally mention DX air conditioning, or ask a question about a DX cooling etc. “DX units”, “direct expansion”, “dx split system” and “dx cooling” are just some examples of terms we here from time-to-time from our AC Technicians. When talking about at air conditioning, there are a lot of technical terms thrown around. Corporate Social Responsibility (CSR) Policy. ![]()
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