HVAC Engineering Goose Island Chicago, IL2018-10-23T04:08:38+00:00

What Can Our HVAC Engineers in Goose Island Chicago Do For You?

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When you re looking for a fast responding HVAC Engineering in Chicago? The one to go to is New York Engineers. Not only for HVAC Firms in Chicago but also Value Engineering and Sprinkler Design Engineering in or near Goose Island Chicago. Contact us at (312) 767-6877

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MEP Engineering Pdf

Since 2011 a lot of developers throughout New City, NY already know that NY Engineers is the engineering firm to call when you are searching for Value Engineering in NY. What a lot local construction companies have not realized is the NY-Engineers.Com is also your best choice if you’re looking for HVAC Engineering services in Goose Island Chicago, IL. If you want to learn more about what Goose Island Chicago HVAC design engineers do? This really is an exclusive profession with an a detailed selection of duties. An HVAC design contractor will have to go through a variety of challenges to eliminate the underlying issue. This job needs superior expertise, professionalism, and the capability to handle time wisely.

Once an HVAC engineer is licensed to work, they are going to join up with an engineering firm and begin to functions on several heating, cooling, and refrigeration systems. Their task is usually to draw up new or alternative options according to their customer’s requests. Each customer is going to have an exclusive set of wants whether or not it concerns constructing codes or personal performance expectations. Using all of this material, the engineer goes on a journey towards building something which is eco-friendly, energy-efficient and well suited for the setting it’s likely to be placed in – (industrial, commercial or residential. They usually are accountable for the first creations and managing the actual installation.

Generally, an HVAC engineer in Goose Island Chicago is going to be seen working at a design company or perhaps in a consulting firm according to their years of skill. Most engineers transition right into a consulting job as they become older and acquire a better idea of what’s required of them.

Comparison: HVAC Technician vs HVAC Engineer

HVAC Engineer and HVAC Technician tend to be mistaken for the other. However, they have separate job functions in terms of overseeking HVAC systems. It is essential to understand the dis-similarity both as being a client also as a specialist

An HVAC technician in Goose Island Chicago has a more direct job, which implies they are generally seen heading to a client’s building to check out their present system. They often times take care of the installations, repairs, and over-all keep which is required from time to time. Almost all of their job is done alongside your client, which suggests they should learn how to interact with people properly.

With the HVAC engineer, they are accountable for creating a brand new HVAC system and ensuring that it fits exactly what a customer is after. It needs to fit precisely what the home owner needs whether or not this involves their setup, property, or everything associated with new system. They are also introduced to refer to HVAC creations to be certain things are in line with modern standards. This is the reason they may wind up spending some time in consulting tasks or at local engineering firms. This is the distinction between both of these occupation; HVAC Technician vs HVAC Engineer. There is a great possibility you would like additional details on the HVAC Engineering services in Goose Island Chicago, IL by NY Engineers we invite you to take a look at our Goose Island Chicago Building Commissioning blog.

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Ask an Electrical Engineering Professional: Are My Electric Motors Well Protected?

Fire Protection Engineering

Electric motors are normally out of sight, but they perform many important functions in residential, commercial and industrial buildings. Electric motors are used to drive air handlers, chillers, furnace blowers, water pumps and elevators, to name a few examples. For this reason, it is an important part of electrical engineering to keep them in optimal operating condition, and an important aspect of safe motor operation is providing them with reliable electrical protections.

Three-phase electric motors are normally used for mid- or large-sized equipment, and they are characterized by operating with three live conductors. These motors require specialized protections due to their connection. In smaller applications, such as fractional horsepower fans, single-phase electric motors are normally used.

These use either two live conductors, or a live conductor and a neutral conductor.

Motor faults are almost always disruptive because key equipment is taken out of operation. Also consider that electric motors are expensive, so it is in the best interest of property management companies to avoid replacements. In a few words, adequate motor protection pays off in the long run.

This article will provide an overview of the main electrical issues that threaten motors, and how to provide protection against them. If you are planning a major building renovation, it represents a good opportunity to upgrade motor equipment and improve electrical protection.

Protection Against Major Electrical Faults With Proper Electrical Engineering

Some faults cause the electrical current of a motor to increase drastically to many times its normal value. These faults must be disconnected immediately, or they cause irreversible damage to the motor, while being capable of starting a fire.  The electrical current can reach extremely high values under the following circumstances:

  • Contact between a live conductor and a neutral conductor.
  • Contact between a live conductor and a grounded surface or conductor.
  • Contact between two or more live conductors.

These faults cause what is called a short circuit in electrical engineering: a low-resistance connection between two points at different voltage values, which causes an extremely high current – often with magnitude in the thousands of amperes.

Motor protections use a magnetic tripping mechanism to clear these dangerous faults. The short circuit current induces a strong magnetic field through an electromagnet, which in turn forces a contact to open, disconnecting the motor from its power supply.

Electric motors draw a high inrush current when they start, which can reach values up to 800% of the motor’s rated current. This is normal behaviour and it only lasts for brief moments while the motor starts rotating, so it does not count as a fault. Motor protections must be sized to allow the inrush current, while clearing anything higher.

Protection Against Motor Overload

An overload is a less drastic type of fault where the motor is drawing current above its rated value, but only by a slight margin. However, overloads cause electric motors to heat up excessively, which shortens their service life.

Unlike short circuit protection, which is instantaneous, overload protection has a built-in time delay. This allows short-duration currents above the rated value that are normal in some types of equipment, such as the inrush current when a motor starts. In fact, if the motor fails to start for any reason, such as an obstacle locking the shaft or excessive load, the overload protection activates and disconnects the motor.

Overload protection acts faster as the current magnitude increases, which means a current slightly above the rated value may take minutes to be cleared, while a drastic overcurrent may be cleared in seconds. Currents that are high enough to activate the short-circuit protection described in the previous section cause immediate disconnection.

Overload protection can be either thermal or electronic. When it is thermal, it is based on a contact that expands with heat: more current causes more heat, and more heat causes a quicker disconnection. On the other hand, electronic overload protection uses a programmed response with the same behavior as the thermal protection, and the current is measured to determine how fast the contact will open.

Protection Against Voltage Changes

Motors have a rated voltage value, but they normally tolerate a variation of 10% above and below this value. However, the operating voltage should be as close as possible to the rated value to ensure optimal performance. When the voltage supplied to a motor is too low or too high, it draws a higher current, which overheats its windings and shortens its service life.

There are special overvoltage and undervoltage relays that measure the voltage being supplied to the motor and disconnect the power supply if the voltage falls outside the acceptable range. These relays are often adjustable, so it is important to establish a reasonable voltage range:

  • A range that is too narrow above and below the rated voltage may result in unwanted motor disconnections, since even minor voltage variations result in disconnection.
  • However, a range that is too broad does not provide adequate protection because the voltage is allowed to change drastically.

Protection Against Phase Loss and Phase Imbalance

Single-phase motors shut down when one of their conductors is disconnected, even if the other remains, since there is no path for electric current. On the other hand, three-phase motors can continue operating with only two-phase conductors, but this is extremely demanding for the motor and shortens its service life. Keep in mind that interrupting the voltage to any phase conductor has the same effect as disconnecting the conductor – the motor is left with a voltage supply in only two of its three terminals.

A related issue is phase imbalance, which occurs when the voltage supplied to a three-phase motor varies drastically between phases. Phase imbalance causes the motor to produce more noise and heat, while decreasing its efficiency and service life. Ideally, phase imbalance should be kept below 2% for optimal motor performance.

Phase monitors are devices that track the phase voltages of a motor and can be integrated with a contactor to disconnect the motor in the event of excessive imbalance or phase loss.

Conclusion

Adequate motor protection can be considered an investment in electrical engineering, since it prevents damage to expensive equipment. It also makes building interiors safer, since electrical faults with the potential to start a fire are cleared before they have a chance to do so. By working with qualified electrical design engineers, you can make sure all your electrical motors are specified with reliable protections and installed according to the codes relevant to your area.

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