HVAC O'Hare Chicago2018-11-20T14:30:24+00:00

HVAC O'Hare Chicago | Expert Energy Efficient System Designs

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Do not be confused by our NY Engineers is the top choice if you are searching for Full Service Heating Cooling Air Conditioning Furnace (HVAC) Engineering Firm in Chicago Illinois. We are not only an HVAC Companies in or near Chicago but also a leading provider of Sprinkler Design Engineering services in or near O'Hare Chicago. Contact us at (+1) 312 767-6877

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As of late huge crowds have been stopping by the New York Engineers website in search of Architectural Engineering in or near Chicago. This is due primarily due to the reputation we have develop in this kind of work. However, many building owners from Lake Barrington to Normal, Illinois, do not know that New York Engineers is also a top contender for anyone in search of HVAC Chicago, Illinois

The pursuit of power efficient buildings involves energy efficient HVAC system design. This may include systems for HVAC, lighting, architectural enclosure, domestic water heating, and vertical transportation. The loads for the HVAC systems should come primarily from five different sources including lighting (cooling), the property envelope (cooling and heating), ventilation (cooling and heating), equipment for program use (cooling) and occupancy (cooling).
The ventilation load will be a purpose of either the machines required so as to introduce it right into a space and control contaminant concentration or the quantity of individuals that will be in the space. In the vast majority of climates within the southwestern and eastern parts of the US, to lessen outside air-flow will save energy whenever the outer air is either warm and humid or very cold.
Governing the ventilation rate will probably be dependant upon occupancy which is referred to as a kind of demand control ventilation. This is a common type of energy conservation policy which is used for buildings with occasional or crowded occupancy. Having cooling and heating loads dropped as low as possible can be achieved by making use of a high performance building envelope, occupancy sensors, and performance lighting that uses daylight response of lighting controls.

Chicago HVAC Engineers vs HVAC Technicians

If you’ve ever considered the distinction between a HVAC Technician vs HVAC Technicians, then please read on:

Chicago HVAC engineers would be the people who supervise setting up of air-con systems for both commercial and residential buildings. They spend lots of their day in offices doing higher level organization and planning of installations but they do also stop by job sites every once in awhile.

In comparison, HVAC technicians have a tendency to do a lot of hands-on work  that deals with repair and maintenance. A HVAC technician may deal with an engineer to perform a number of the installation work, specifically on smaller jobs. Generally speaking HVAC technicians do far more travel and may spend time and effort changing filters, identifying leaks, doing recharges or getting rid of old and outdated systems which use old refrigerants.

HVAC engineers could possibly have the ability to make more decisions about systems that are being used, and they are the people who would offer assistance with the most sensible refrigerants and which systems would best suit a bigger building. In the industry, there is some rivalry between ‘the suits’ and ‘the ones which get their hands dirty’, but the two jobs do require an excellent knowledge of how air-con really works. Nowadays huge crowds have been reading our sites searching for things like HVAC Chicago Repair. With that said, the goal of our organization is to become the number one choice for anyone looking for a HVAC Firm near Chicago and or any of our other services including Sprinkler Design Engineering services. We ask that those looking for more info about our Heating & Air Conditioning (HVAC) Engineering Firm in Chicago Illinois stops by at our Utility Filings blog!

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Construction Engineers Explain How HVAC Systems Move Heat

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Heat movement is required for both space heating and air conditioning. Space heating systems deliver heat and air conditioning systems remove it, but the goal in both cases is reaching a suitable indoor temperature. Construction engineers can explain how, though heat can be transmitted across empty space by radiation, using convection and the bulk movement of a fluid is much more effective. In HVAC applications, the most common fluids used to carry heat are air, water, refrigerants, and steam.

Since each substance has different properties, the heat distribution fluid used by an HVAC system determines many performance features. Also consider that different fluid may be used in the same system, with intermediate heat exchange steps.

Heat Distribution with Air

The main advantage of using air to carry heat is simplicity: air is already present in the atmosphere and indoor spaces, so there is no need to use additional fluids in the HVAC system.  Air can interact directly with AC compressors, furnaces or heat pumps to adjust its temperature, and it can then be distributed using fans and ductwork.

However, air ducts require more space than the piping used by other heat-carrying fluids, and they are impractical when air must travel long vertical distances. Consider that warm air rises while cool air tends to fall below, and fan power increases dramatically if you need to move air against its natural behavior. This is neither practical nor energy efficient!

When air ducts must serve separate zones, its distribution is typically controlled with air dampers. These can adjust their position between fully open and fully closed as needed to regulate airflow, and they are controlled automatically by the thermostats in each zone.

One of the most promising system upgrades for air distribution systems promoted by construction engineers is adding variable frequency drives (VFD) to the fans. Reducing fan speed is much more efficient than intermittent operation when you don’t need the full rated airflow. In the case of fractional horsepower fans, a brushless DC motor is recommended instead of a VFD, since they come with built-in speed control.

Packaged rooftop units are an example of an HVAC system that uses air as the main heat distribution and heat removal medium.

Heat Distribution with Water

Some HVAC systems heat or cool water instead of air, and water then interacts with indoor air through fan coils. When this configuration is used, the installation is referred to as a hydronic system. Compared with air, water can hold much more heat per unit of volume, thanks to its higher specific heat and density. As a result, it is the preferred heat-carrying medium in large commercial and industrial installations: hydronic piping uses much less space than air ducts for a given heating or cooling load.

Just like airflow can be controlled with dampers and VFD-equipped fans, the flow of water in a hydronic system can be controlled with valves and VFD-equipped pumps. The basic principle is the same: finding an operating point where each zone is kept at the required temperature and humidity, at the lowest energy cost possible.

Chillers and boilers are two examples of HVAC systems that rely on water to carry heat. Indoor air can then be heated or cooled using fan-coils. Another possible configuration is using larger air-handling units (AHU) connected to an air duct system, where heat exchange occurs between the hydronic piping and the air being circulated by the AHU.

Refrigerant

All air conditioning compressors and heat pumps use refrigerant internally, but there also HVAC systems with longer refrigerant lines connecting different pieces of equipment. Refrigerant lines are even more compact than hydronic piping, not to mention air ducts. Just like when water is used to carry heat, refrigerant flow can be controlled with the combination of valves and variable speed control for the compressor.

Ductless air conditioners and heat pumps use refrigerant lines between the condenser and evaporator units, and typically offer a very high efficiency. The concept can also be applied for multiple zones served by a single outdoor unit, using a variable refrigerant flow system (VRF). VRF systems are very efficient as well, while consolidating heating and cooling systems into a single installation.

Steam

Many buildings in New York City use steam as a heat-carrying fluid, since a significant portion of the city gets steam as a utility service from Con Edison. However, if you plan to install your own boiler, a hot water system is preferred over a steam system.

The main drawback of steam is that you can use it only for heating in most cases. The only way to achieve cooling with steam through an absorption chiller, but a conventional electric chiller is much more economic in multifamily and commercial settings. Absorption chillers are better suited for applications where heat is available at a very low cost or as a waste product of industrial activity – not when you are paying for steam as utility service.

Since steam cannot be used directly for cooling, buildings with steam radiators often have window-type or through-the-wall air conditioning units. These normally suffer from poor efficiency, so you can consider upgrading to ductless units while the heating system is retrofitted to use hot water.

Our Construction Engineers’ Conclusion

HVAC systems are characterized by their variety, and each configuration brings a different set of performance features. Working with qualified HVAC consultants and construction engineers is recommended to identify the system configuration that works best, according to the specific needs of your building. Also keep in mind that only a registered design professional can submit HVAC designs for approval by the NYC Department of Buildings.

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