HVAC Engineering Chinatown Chicago, IL 2018-10-11T23:42:49+00:00

What Can Our HVAC Engineers in Chinatown Chicago Do For You?

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For more than ten years a great number of property owners throughout Lindenhurst, NY already know that NY Engineers is the engineering firm to call when you are ooking for Architectural Engineering in NY. What a lot local developers have not realized is the New York Engineers is also your top choice if you are searching for HVAC Engineering services in Chinatown Chicago, Illinois. If you need more information on what Chinatown Chicago HVAC design engineers do? This can be a unique profession with an a detailed set of responsibilities. An HVAC design personel will have to get through a variety of problems to settle the core issue. This task needs special talent, competence, and the opportunity to handle time wisely.

The moment an HVAC engineer is certified to work, they are going to be hired by an engineering business and begin to functions on many heating, cooling, and refrigeration systems. Their function is to design new and/or additional options in line with their customer’s requirements. Each customer is going to have a unique set of needs whether or not it involves developing codes or individual performance anticipations. Using all of this info, the engineer sets off on a trek towards creating something which is energy-efficient, eco-friendly and suitable for the place it is going to be used in – (residential/commercial/industrial). They are usually accountable for the first creations and overseeing the actual installation.

Generally speaking, an HVAC engineer in Chinatown Chicago will probably be seen working with a design business or perhaps in a consulting team according to their numerous years of skill. Most engineers move in to a consulting job while they mature and acquire a better comprehension of what’s expected of them.

Comparison: HVAC Technician vs HVAC Engineer

HVAC Engineer and HVAC Technician are usually confused with the other. But, they have separate tasks with regards to running HVAC systems. It is essential to be aware of the difference both as being a parton as well as a specialist

An HVAC technician in Chinatown Chicago has a more active job, meaning they are usually seen going to a owner’s building to look at their existing system. They often take care of the repairs, installations, and overall keep which is needed every once in awhile. Nearly all of their work is done alongside your client, which suggests they should realize how to connect with people in the correct manner.

With the HVAC engineer, they are accountable for creating a new HVAC system and making sure it fits what a customer wants. It needs to fit what the home owner needs if it involves their setup, property, or everything of new system. Also, they are brought in to talk on HVAC designs to ensure everything is consistent with modern standards. That is why they could end up hanging out in consulting assignments or at local engineering businesses. That is the distinction between these two vocation choices; HVAC Technician Versus HVAC Engineer. Even with all of this information you would like more info about the HVAC Engineering services in Chinatown Chicago, Illinois by NY Engineers we invite you to check out at our Chinatown Chicago Energy Modeling blog.

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Advantages of Electronically Commutated Motors in Electrical Engineering

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Electronically commutated motors (ECMs) can achieve significant energy savings in electrical engineering applications where fractional horsepower is required. Although NEMA Premium Efficiency motors with variable-frequency drives provide the most efficient solution to drive equipment above 1 hp, induction motors are outclassed by ECMs as the rated horsepower is reduced.

What is an Electronically Commutated Motor?

Although ECMs are designed to run with an AC power supply, it is important to note they are actually direct-current motors with permanent magnets on their rotor. Unlike conventional DC motors, which create a rotating magnetic field with a combination of brush contacts and slip rings, ECMs achieve the same effect with a voltage rectifier and an electronic control circuit. As a result, the friction and sparks associated with brush contacts are eliminated, and this is one of the reasons why ECMs are so efficient. They also have a longer service life than brushed motors, since the wear associated with sparks and friction is eliminated. Compared with other common types of fractional horsepower motors, ECMs are the top choice in terms of efficiency:

  • Shaded-pole motors are very common and more affordable, but their efficiency is very poor, going below 20% in some cases.
  • Permanent-split capacitor (PSC) motors have an average efficiency of 40%, which means they outclass shaded-pole motors. In terms of efficiency, they are an intermediate option between shaded-pole motors and ECMs.
  • ECM efficiency is normally above 60%, which means they consume one-third of the energy used by shaded-pole motors on average.

ECMs can also be manufactured with built-in speed control circuits, allowing them to operate at reduced speed without relying on an external VFD. It is also important to note that ECMs do not suffer a drastic reduction in their efficiency when operating below rated RPM. Fixed-speed ECMs are also available for applications where speed control is not necessary.

Electronically Commutated Motors in Electrical Engineering Applications

ECMs are normally the most efficient option in fractional horsepower applications, but they tend to deliver the highest savings when used in air-conditioning and refrigeration systems. Being more efficient that shaded-pole and PSC motors, they also dissipate less heat, and the reduced heating effect helps AC and refrigeration systems operate more efficiently. This effect applies for all air-conditioning or refrigeration components that are found inside the conditioned space, such as air handlers and evaporators.

As an example, assume a cold-storage room has an evaporator unit with five shaded-pole motors, consuming 900W each. They are replaced with ECMs that only consume 300 W each.

  • 600 W are saved per motor, for a total of 3,000 W.
  • However, these 3,000 W are also subtracted from the refrigeration load. If the system operates with a coefficient of performance of 3, an extra 1,000 W of electric power are saved.
  • In other words, this upgrade saves 3 kW in motor power and 1 kW thanks to refrigeration load reduction.

Keep in mind this is just a simple example, and each electrical engineering project requires a detailed analysis to know the exact savings. However, the heating reduction benefit applies for all cases where ECM motors are deployed in air-conditioned or refrigerated locations.

The brushless design of ECMs makes them quieter than their less efficient counterparts, which also provides a comfort advantage. In business applications, the silent operation of ECMs helps employees concentrate better. ECMs are also lighter than other types of fractional horsepower motors, which makes them easier to install.

Electronically Commutated Motors in Ventilation Systems

As previously stated, shaded-pole and PSC motors are inefficient. Also, three-phase motors with VFDs are impractical for fractional horsepower applications, unable to offer the efficiency that characterizes them in larger systems. Ventilation systems represent an excellent opportunity to deploy ECMs, for two main reasons:

  • Fans with fractional horsepower are common, which means they are often driven by shaded-pole or PSC motors.
  • Many fans have intermittent operation, which represents a chance to use ECMs running at reduced speed. For example, running a fan 80% of the time saves 20% of the energy, while running it at 80% speed saves nearly 50%.

ECMs are a highly recommended upgrade for furnace fans, since they can achieve a much more uniform temperature distribution with their speed control, in addition to offering the energy savings that characterize them.

Payback Period of ECM Upgrades

Like with many energy efficiency measures, the financial benefit of an ECM upgrade changes depending on project conditions. The project payback period can only be calculated with precision after a detailed analysis by a professional energy consultant, but in general the following results can be expected:

  • Replacing shaded-pole motors normally yields a faster payback period than replacing PSC motors, since the efficiency gain is higher. Of course, there can be exceptions; replacing a PSC motor that is used frequently may yield higher savings than upgrading a shaded-pole motor that is only used moderately.
  • ECMs can also be an attractive option in appliances that require speed control. Other types of motors may suffer a drastic efficiency reduction at partial speed.
  • As previously mentioned, the energy savings are higher when ECMs are deployed in air-conditioned or refrigerated spaces.

The financial return of an ECM upgrade can also be enhanced if there are incentive programs at the project’s location. The incentive is calculated based on yearly energy savings, at a rate of $0.16/kWh.

Conclusion

Electronically-commutated motors (ECMs) can achieve significant energy savings in fractional horsepower applications, especially when they replace shaded-pole motors. However, like with any energy efficiency upgrade, professional guidance is highly recommended when defining the project scope and specifications.

When upgrading to ECMs, the return on investment is higher in some cases, and it others the payback period may be too long to justify the upgrade. Ideally, upgrades should focus on where the highest return is obtained from each dollar spent upfront. Recruit the help of an electrical engineering expertise to help you properly apply the information shared in this article to your project.

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