MEP Engineering Services in The Gap Chicago, IL.

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Real estate investors throughout Lake Ronkonkoma, NY have come to rely on New York Engineers for a wide range of engineering services ranging from Sprinkler Engineering to Construction Administration. This is why building owners in The Gap Chicago will tell you that if you’re looking for a excellent MEP Engineering firm in The Gap Chicago, Illinois you should consider NY Engineers.

It is very possible, you might have walked into any particular sort of building and observed the outcomes of MEP Engineering. In other words, MEP focuses on the mechanical, electrical and plumbing aspects of engineering. In simple terms, the name already gives rise to the most common and accurate guess of what is MEP. This article should go into some details of what is MEP Engineering.

As far as the mechanical part is concerned, both for commercial and residential engineering, this works with anything which moves. In addition its entails the usage of complex and straightforward machines together with other mechanical mechanisms to execute certain tasks. Some normal mechanical engineering tasks which is often noticed everyday are HVAC units, kitchen or bath exhausts, cooling and heating air systems and equipment and systems which cope with increasing the energy efficiency.

The electrical element of construction is centered on the components, functions, electrical safety, and more importantly, the wiring of the building. Engineers in this particular department try very hard to make certain that the layout of the building are designed to bring enough power to every individual component in a safe manner ensuring that each of the electrical codes are met. Some common electrical engineering jobs may be found in the lighting design, regulating the voltage and distributing the power to each component in the building that demands a supply.

So far as plumbing, there is certainly a variety of plumbing components which constitute the final model of any building. Plumbing engineering goes deeper than merely toilets, faucets, and sinks, and contains many behind the scene devices. These being the drainage line and sewage as well as the buildings domestic water supply and the way it flows.

As we wrap up our article we now have just checked out what is MEP Engineering. MEP Engineering is administered inside the construction industry. And, supports completing the often ignored technical facets of any building.

Hiring an MEP Engineering Firm in The Gap Chicago is Necessary for Major Construction Projects

Hiring an MEP engineering firm in The Island Chicago, Illinois, can have a whole lot to do with the success of your construction project. These specialists can help offset the price of making such a hiring decision with regards to energy conservation alone. When you find yourself talking about large commercial structures, energy upkeep is really a topic of discussion. It’s time to find out some other great causes of employing MEP engineers in Tri Taylor Chicago, Illinois.

Engineers have a lot to do with the physical reliability of the building. As you may well imagine, it means the hidden is very essential. Design not only deals in aesthetics but the underpinning of a building including its workings. Which is yet another solid logic why hiring an MEP engineering firm will likely be useful to any project.

Take into consideration each of the pipes and plumbing. Take into account the heating and cooling systems and how important it is to get all of its mechanics in the precise places. Energy saving was mentioned, but energy efficiency can be another significant term to note. Energy competence concerns your HVAC system, plus it plays a huge part in energy conservation overall.

Think about your building’s foundation. Consider installing home security systems as well as the safety and security measures set up along the entire structure. With everything described so far, it’s reliable advice that a great many aspects of building construction could be either disregarded or underestimated without MEP professionals at work.

Now with all you have read you are going to be looking to get the best MEP engineering firm available, right? It’s pretty obvious that this best engineers must be active in the massive building of commercial structures. Customised will be the best term to use to explain the way in which these specilists will adapt a construction job to meet the needs of your respective operations. Even with all of this information you would like additional details on the MEP Engineering services in The Gap Chicago, IL by NY-Engineers.Com we invite you to take a look at our The Gap Chicago Engineering Reports 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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2018-09-15T00:40:18+00:00