HVAC River's Edge Chicago2018-11-13T19:46:55+00:00

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Do not be misled by the name NY Engineers is your best bet if you are searching for Full Service Air Conditioning, Heating & Cooling (HVAC) Engineering Firm in Chicago Illinois. We’re not only an HVAC Chicago but also a leading provider of MEP Engineering Engineering services in River's Edge Chicago. Call (+1) (312) 767-6877

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In recent times huge crowds have been visiting our site looking for Construction Engineering near Chicago. This is due primarily due to the following we have develop in this kind of work. With that said, many building managers from Glencoe to Riverside, IL, are not aware that NY Engineers is also the ideal choice for anyone in search of HVAC Chicago, Illinois.

The pursuit of power efficient buildings involves energy-efficient HVAC system design. This will include systems for HVAC, lighting, architectural enclosure, domestic water heating, and vertical transportation. The loads for the HVAC systems can come primarily from 5 different places including lighting (cooling), the building envelope (cooling and heating), ventilation (cooling and heating), equipment for program use (cooling) and occupancy (cooling).
The ventilation load will certainly be a purpose of either the machines needed in an attempt to introduce it into a space and control contaminant concentration or the number of folks that may occupy the room. In the majority of climates within the southwestern and eastern regions of the US, to reduce outter air movement can save energy whenever the exterior air is either warm and humid or very cold.
Managing the ventilation rate will probably be based on occupancy which is known as a variety of demand control ventilation. It is a everyday sort of energy conservation approach that is used for homes with intermittent or crowded occupancy. Having cooling and heating loads reduced to a minimum can be accomplished through the use of a higher performance building envelope, occupancy sensors, and performance lighting that exploits daylight response of lighting controls.

Chicago HVAC Engineers versus HVAC Techs

If you’ve ever considered the difference between a HVAC Engineers versus HVAC Engineers, then please read on:

HVAC engineers would be the people who manage the installation of air-con systems for both residential and commercial buildings. They spend a lot of their work in offices doing higher level supervision and arranging of installations nonetheless they do also see job sites every so often.

But, HVAC technicians usually do a lot of the hands-on work  that deals with maintenance and repair. A HVAC tech may assist an engineer to accomplish a number of the installation work, specifically for smaller jobs. On the whole HVAC technicians do considerably more travel and may spend time and effort changing filters, identifying leaks, doing recharges or decommissioning old and outdated systems which use old refrigerants.

HVAC engineers may have the chance to make more decisions about systems that are employed, and they are the individuals who would offer assistance with the most sensible refrigerants and which systems would be perfect for a bigger building. In the trade, there is some challenge between ‘the suits’ and ‘the ones that will get their hands dirty’, but the two jobs do require a good knowledge of how air conditioner works. In recent times huge crowds have been browsing the New York Engineers website searching for things like HVAC Contractors Chicago. With that said, the goal of our firm is to become the top option for anyone seeking a HVAC Company in or near Chicago and or any of our other services including Sprinkler System Engineering services. Furthermore anyone looking for additional details about our Heating Cooling Air Conditioning Furnace (HVAC) Engineering Firm in Chicago Illinois checks out at our blog!

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Using Proper MEP Engineering to Protect Water Booster Pumps from Cavitation

Mechanical Engineering Information

Booster pumps play a very important role in ensuring a continuous water supply. In the absence of a booster system, most buildings only get a reliable water supply for the first five floors. For this same reason, keeping booster pumps under optimal operating conditions is a very important part of MEP engineering, and one of the main causes of impeller failure is an hydraulic phenomenon called cavitation. This article will provide an overview of cavitation and how it can be prevented.

What is Cavitation?

Everyone knows that water can be boiled with heat, turning it into vapor. However, low pressure can also vaporize water, and this can happen inside a pump if water is not supplied with enough pressure at the intake. When the pressure of a fluid drops below a critical value called the vapor pressure, small bubbles form in the flow, and these bubbles collapse violently once pressure increases again – the phenomenon is called cavitation, because the bubbles are cavities in the fluid.

You may be wondering how a pump reduces fluid pressure, when its actual purpose is to increase it. The answer can be explained with Bernoulli’s principle, which states that a fluid loses pressure as it speeds up or as it rises to a higher elevation. Water speeds up at the pump suction, and its pressure drops momentarily before being increased.

One bubble forming and collapsing does not cause major issues, but consider that thousands are continuously forming and imploding when a pump has severe cavitation issues. The combined shockwaves of all these bubbles gradually erode the pump impeller. When removed, the impeller blades will seem to have corroded, even though cavitation does not involve any chemical processes.

Other than impeller erosion, cavitation has many negative consequences in water booster pumps and other similar systems:

  • Vibration: The ongoing formation and collapse of bubbles not only wears down the impeller. The resulting shockwaves also shake the impeller, inducing vibrations in the entire shaft, with the potential to damage other system components. Seals and bearings are especially vulnerable to vibration.
  • Noise: Cavitation is very noisy due to the imploding bubbles. For a person close to the affected pump, it may sound like there are small rocks or marbles are being pumped along with water.
  • Decreased performance: Cavitation represents wasted energy, and this can be reflected as a reduction in flow or discharge pressure. A sudden drop in pump performance without an evident reason may indicate cavitation.

Preventing Cavitation With Adequate MEP Engineering

The technical specifications for pump manufacturers typically include a value called the Net Positive Suction Head (NPSH) required, which can be defined as simple terms as the minimum water head required at the pump suction for normal operation. If the actual head is above the NPSH required, no cavitation occurs.

In theory, cavitation can be prevented by increasing the suction pressure or by reducing the speed of water as it flows through the pump impeller. In practice, there are many ways to accomplish this effect.

  • Reduce pump speed: Cavitation is less likely at lower RPM values, so a booster pump can be slowed down with a variable frequency drive (VFD), as long as the system continues to meet the pressure and flow requirements in the local plumbing code.
  • Install the pump at a lower level: Static water pressure is higher at the lower levels of a building, so installing it at the lowest elevation possible reduces the chance of cavitation.
  • Reduce temperature: The critical pressure at which cavitation occurs increases as fluid temperature increases. If water must be pumped and heated, make sure the pump is installed upstream from the water heater.
  • Selecting the right pump: Many cavitation issues can be attributed to poor pump selection, and the issue disappears when a pump that matches the application is used.

The best solution for cavitation is not allowing it to occur in the first place, and this can be accomplished by working with qualified MEP engineering professionals from the start of a project. Modifying actual projects is far more expensive and time consuming than editing construction plans and specifications. A high-level professional design will not only prevent cavitation, but also optimal equipment capacity, energy efficiency and local code compliance.

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