MEP Engineering Services in Auburn Gresham Chicago, Illinois.

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Building owners throughout Garden City, New York have come to rely on New York Engineers for a wide range of engineering services ranging from Sprinkler Engineering to CAD to Revit Modeling. For this reason developers in Auburn Gresham Chicago will tell you that if you’re searching for a dependable MEP Engineering firm in Auburn Gresham Chicago, IL you should consider NY Engineers.

It is very possible, you may have walked through any particular form of building and saw the outcome of MEP Engineering. Basically, MEP focuses on the mechanical, electrical and plumbing facets of engineering. In essence, the name already gives a clue to the most typical and spot on assumption of what is MEP. Our article will go into some details of what is MEP Engineering.

As far as the mechanical side is concerned, for both commercial and residential engineering, this handles anything that moves. Moreover its involves using complex and uncomplicated machines as well as other mechanical mechanisms to carry out certain tasks. Some common mechanical engineering tasks that may be noticed on a day to day bacis are HVAC units, kitchen or bath exhausts, cooling and heating air systems and equipment and systems which handle increasing the energy efficiency.

The electrical part of construction is centered on the components, functions, electrical safety, and most importantly, the wiring for any building. Engineers within this section try very hard to ensure the layout of a building are designed to provide adequate electricity to every component in a safe manner ensuring that all of the electrical codes are met. Some commonplace electrical engineering functions are available in the lighting design, modifying the voltage and distributing the energy to each and every component inside the building that takes a supply.

In terms of plumbing, there may be a wide array of plumbing components which constitute the final form of any structure. Plumbing engineering goes deeper than merely faucets, toilets, and sinks, and holds many behind the scene equipments. These being the drainage line and sewage along with the buildings household water supply and how it flows.

As we wrap up our article we have just checked out what is MEP Engineering. MEP Engineering is managed throughout the construction industry. And, helps with completing the often ignored technical facets of any building.

Hiring an MEP Engineering Firm in Auburn Gresham Chicago is Important for Major Construction Projects

Employing an MEP engineering firm in Fulton River District Chicago, ILO, may have everything to do with the success of your construction project. These professionals may help offset the cost of making this kind of hiring decision in relation to energy management alone. While you are speaking about huge commercial structures, energy management is an important topic of discussion. It’s time to find out a few other great factors behind using MEP engineers in West Englewood Chicago, Illinois.

Engineers have everything to do with the physical integrity of a building. As you may well envision, it means the unseen is very vital. Design not merely deals in looks but the underpinning of a building also its workings. That is just another solid good reason that employing an MEP engineering company will be good for your project.

Think about each of the pipes and plumbing. Take into account the cooling and heating systems and the importance of getting all of its mechanics in the precise places. Energy conservation was stated, but energy efficiency is an additional important term to discuss. Energy competence is about your HVAC system, plus it plays a huge part in energy saving in general.

Think of your building’s base. Consider the installation of fire alarm systems as well as the safety and security measures put in place through the entire structure. With everything else described so far, it’s safe to say that a great many aspects of building construction might be either disregarded or minimized without MEP pros at the job.

Now with all you have read you will look to get the best MEP engineering firm in the business, right? It’s pretty obvious the best engineers really need to be working in the large scale building of commercial buildings. Personalized will be the proper term to work with to illustrate just how these specilists will modify a construction project to meet the requirements of your own operations. Even with all of this information you would like more information on the MEP Engineering services in Auburn Gresham Chicago, IL by New York Engineers we invite you to stop by at our blog.

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How Construction Engineers are Improving HVAC Efficiency in Commercial Buildings with Variable Frequency Drives

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HVAC systems come in various configurations that differ significantly from each other. For example, an air conditioning system based on packaged rooftop units is drastically different from a chiller plant. However, HVAC installations have a common denominator: they use electric motors that are subject to variable loads. Regardless of whether these motors are used to drive compressors, water pumps or fans, construction engineers understand that there is a great opportunity to save energy by optimizing part-load operation.

In general, running a motor at partial speed is more energy-efficient than running it intermittently at full speed.

  • Intermittent operation only provides linear savings. For example, a cooling tower fan with a duty cycle of 80% consumes 20% less energy than an identical fan operating full-time.
  • Reducing motor speed provides cubic savings.. On the other hand, slowing down a fan to 80% speed reduces energy consumption by nearly 50%. The average airflow is the same as that of a fan running at full power 80% of the time, but savings are boosted significantly thanks to speed control.

Speed control can be accomplished with variable-frequency drives (VFD), and they have a broad range of applications in HVAC systems due to the cyclic nature of loads. It is important to note that VFDs are also known as variable-speed drives (VSD), adjustable-frequency drives (AFD) or adjustable-speed drives (ASD).

Fractional horsepower motors in small-scale HVAC systems can also achieve significant savings with speed control. The main difference here is that electronically commutated motors (ECMs) are more cost-effective than VFDs in these applications.

Ask a Construction Engineering Expert: How Does Variable Frequency Drive Work?

As explained by electrical engineering textbooks, the speed of an electric motor is defined by the power supply frequency and its internal construction. For example, a motor running at 1800 RPM with the 60 Hz USA power supply would run at 1500 RPM in the UK, where the frequency is 50 Hz. Thus, if a motor is suitable for operation at reduced frequency, its speed can be ramped down during part load conditions to achieve energy savings. VFDs are connected between the power supply and the motor, adjusting voltage and frequency as a means of speed control.

In applications where only single-phase power is available, VFDs can be used to integrate three-phase motors while achieving the energy efficiency benefits: there are models capable of producing a three-phase voltage from a single-phase input, while adjusting magnitude and frequency to control motor speed.

In addition to improving energy efficiency, VFDs allow motors to be soft-started by gradually ramping up the voltage and frequency, as opposed to directly applying full voltage at 60 Hz. Electric motors draw from five to eight times their rated current when started directly, and the voltage drop that results from the inrush current may damage sensitive equipment.

The main limitation of VFDs is that they produce a phenomenon called harmonic distortion, where high-frequency currents are induced in branch circuits. However, this can be controlled with a properly-specified harmonic filter; this device absorbs current distortions at the point of consumption, preventing their propagation throughout the installation.

VFD Applications in HVAC Systems

In most cases, VFDs are deployed by construction engineers in HVAC systems to control the speed of blower fans, pumps or compressors.

Cooling Tower Fans

The main purpose of a cooling tower is removing the heat from a water circuit, which may be used in turn for process cooling or for a chiller plant. Cooling towers use fans to establish an airflow, improving heat removal through convection. These are open discharge fans, where there is no ductwork creating resistance to airflow; hence, the savings opportunity through speed control is significant.

When a VFD is deployed for a cooling tower fan, speed is normally controlled based on water temperature. Rather than cycling the fan on and off, it can be driven at reduced speed so that the water returning to the chiller or process is kept at a constant temperature – as previously explained, reduced-speed operation is far more efficient than intermittent operation at full speed.

Air-Handling Units and Packaged Rooftop Units

Unlike the fans in cooling towers, those used in AHUs and packaged RTUs blow air into a duct system, which offers higher resistance and requires a specific static pressure and airflow to be established. These ducts may have several outlets with variable-air-volume (VAV) boxes, where airflow is controlled individually for each zone with a damper.

Without a VFD, the blower fan in the AHU or RTU operates at full speed, and each VAV box is adjusted individually. This is an inefficient approach, however – if neither of the VAV boxes is fully open, energy is being wasted in the form of extra pressure. On the other hand, if the blower is equipped with a VFD, an interesting energy-saving strategy becomes possible:

  • Blower speed can be gradually reduced while VAV boxes are opened incrementally, to keep the airflow and temperature constant.
  • The temperature of different zones is unaffected but pressure is reduced, saving energy.
  • Speed reduction continues until one of the VAV boxes reaches the fully open position. At this point it is not possible to reduce speed further without affecting indoor temperatures.

There is also a comfort benefit with this control strategy: the reduced pressure drop translates into less noise, making indoor environments more comfortable.

Speed Control for Water Pumps

Water circuits are a key element of many HVAC installations, including those that use chillers, boilers and water-source heat pumps. Since HVAC loads are variable, it is often necessary to adjust the water flow depending on total system load. There are three main ways to achieve this:

  • Choke Valve-A choke valve is installed in line with the flow, and as implied by its name it regulates flow by closing partially. This control method is simple, but the resulting pressure loss represents a considerable waste of energy.
  • Recirculation Valve-With this approach a valve is installed on a parallel recirculation circuit, and it is opened gradually to divert a part of the water flow, reducing the flow in the main circuit. In this case, however, there is also a significant energy loss because the recirculated water represents pumping power.
  • Pump Speed Control– The most energy efficient approach is to install a VFD on the pump motor. If a reduced water flow is required, it is just a matter of reducing the pump speed accordingly. With no pressure or recirculation losses, the savings achieved are significant. This setup also uses a choke valve for convenience, but it is normally kept in the fully open position, since the VFD regulates flow.

Chillers with Variable-Speed Compressors

In chilled water air conditioning systems, the chiller is by far the piece of equipment with the highest energy consumption. Therefore, installing the most efficient chiller model that can be afforded is highly recommended.

Energy efficient chillers have helical rotary compressors, capable of adjusting their speed with a VFD, depending on cooling needs. Some models may feature multiple individual compressors to achieve enhanced flexibility and increased part-load efficiency.

When a chiller is highly efficient, the control strategy is normally based on maximizing its capacity rather than running it at the lowest possible set point. The savings achieved by reducing the load on complementary systems tend to be far greater than the extra consumption at the chiller. There are exceptions, of course, and only monitoring and control can offer the correct answer 100% of the time.

Integrating the Entire HVAC System

Equipping all motors in an HVAC system with VFDs is a first step towards energy efficiency, but the best results can only be achieved with central control system, capable of assessing building conditions and adjusting HVAC set points in real time.

The interaction between a chiller and a cooling tower is a great example of how control engineering and VFDs can be applied to HVAC installations:

  • Reducing the cooling tower fan speed increases the cooling load on the chiller.
  • The reverse also applies: reducing refrigeration power at the chiller may require more heat to be rejected by the cooling tower.

If the chiller has a high efficiency, the best option in most scenarios is reducing the cooling tower load. However, only a control system can balance the operation of both components in real time. Ideally, the control system should be able to determine the set point for each individual VFD so that power consumption is minimized at the total system level.

Of course, the performance of an HVAC system starts from the design phase. For optimal results, make sure you work with licensed and qualified construction engineers and other HVAC professionals. Installing an efficient and automated HVAC system from the start is much less expensive than upgrading an existing installation.

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(MEP) Engineering Service in Auburn Gresham Chicago

How Can Our Auburn Gresham Chicago MEP Engineers Help You! The great majority of builders throughout West Seneca, NY have come to rely on New York Engineers for a wide range of engineering services ranging from Plumbing Engineering to Construction Administration. That is why property owners in Auburn Gresham Chicago will tell you that if you're searching for a top-rated MEP Engineering firm in Auburn Gresham Chicago, IL you need to consider [...]

2018-08-25T11:23:37+00:00