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In search of the best MEP Firms in Chicago? Your best bet is to contact is NY-Engineers.Com. Not only for MEP Chicago but also Mechanical Engineering and Protection Engineering throughout Worth. Call 312 767-6877

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Construction companies throughout Auburn, New York have come to rely on NY Engineers for a wide range of engineering services ranging from Plumbing Engineering to CAD to Revit Modeling. This is why construction companies in Worth will tell you that if you are searching for a dependable MEP Engineering firm in Worth, Illinois you need to consider New York Engineers.

It is very possible, you may have walked into any specific kind of building and observed the outcomes of MEP Engineering. In other words, MEP focuses on the mechanical, electrical and plumbing facets of engineering. Essentially, MEP already gives a clue to the most frequent and correct notion of exactly what is MEP. This article goes into some information on what is MEP Engineering.

So far as the mechanical side is involved, for both commercial and residential engineering, this works with anything which moves. In addition its entails the use of complex and straightforward machines along with other mechanical mechanisms to do certain tasks. Some normal mechanical engineering tasks that can be noticed everyday are HVAC units, kitchen or bath exhausts, cooling and heating air systems and equipment and systems which take care of increasing the energy productivity.

The electrical facet of construction is centered on the components, functions, electrical safety, and more importantly, the wiring of the building. Engineers in this unit try very hard to make certain that the layout of any building are created to provide adequate electricity to each individual component in a safe manner ensuring that every one of the electrical codes are followed. Some commonplace electrical engineering functions can be found in the lighting design, regulating the voltage and distributing the power to every component inside the building which demands a supply.

As far as plumbing, there may be a wide array of plumbing factors which make up the final design of any building. Plumbing engineering goes deeper than merely toilets, faucets, and sinks, and accommodates many behind the scene devices. These being the sewage and drainage lines as well as the buildings household water supply and just how it flows.

As we wrap up our article we have now just checked out what is MEP Engineering. MEP Engineering is administered within the construction industry. And, helps with completing the easily unnoticed technical elements of any building.

Hiring an MEP Engineering Firm in Worth is Essential for Huge Construction Projects

Employing an MEP engineering company in Chatham Chicago, Illinois, may have a whole lot to do with the success of your construction project. These pros can help offset the fee for making such a hiring decision in terms of energy management alone. While you are talking about large commercial buildings, energy management is really a topic of discussion. It’s time to find out a few other great reasons behind employing MEP firm in Park Manor Chicago, Illinois.

Engineers play an important role in the structural integrity of a building. As you may well imagine, this means the unseen is very essential. Design not simply deals in looks but the groundwork of a building also its components. That is certainly the next solid reason why hiring an MEP engineering firm will likely be useful to any project.

Think about all the pipes and plumbing. Look at the heating and air conditioning systems and the importance of getting all of its components inside the correct places. Energy maintenance was discussed, but energy efficiency is an additional significant term to bring up. Energy efficiency concerns your HVAC system, and it plays an important role in energy maintenance as a whole.

Take into consideration your building’s base. Consider setting up home security systems and the security and safety measures put in place through the structure. With everything else described up to now, it’s safe to say that many elements of building construction might be either disregarded or underestimated short of MEP engineers at work.

Now with all you know you are going to be looking for the very best MEP engineering company in the industry, right? It’s very clear that the best engineers need to be involved in the large scale construction of commercial structures. Tailor made will be the best term to make use of to clarify how these pros will customize a construction job to meet the requirements of your respective operations. There’s only so much you can save this page if you would like additional info on the MEP Engineering services in Worth, Illinois by NY Engineers you should visit at our blog.

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Operating Modes of VRF Systems in HVAC Engineering

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Variable Refrigerant Flow (VRF) is an HVAC engineering (air conditioning) technology that achieves an extremely high efficiency by varying the flow of refrigerant to indoor units, based on the exact demand of each individual area. This ability to control the flow of refrigerant makes VRF systems ideal for applications with varying loads. In addition, VRF systems can also provide space heating, consolidating two building systems in one and saving space.

VRF technology is available in two versions – heat pump systems and heat recovery systems. Heat pump VRF systems can either cool or heat the entire building but cannot perform both functions at the same time. Heat recovery systems do not have this limitation and can serve simultaneous heating and cooling loads, thus leading to 3 different modes of operation:

  • Cooling mode
  • Heating mode
  • Simultaneous cooling & heating, or heat recovery mode

VRF Systems in Cooling Mode

In cooling mode, VRF operation is not very different from that of an air conditioning system: indoor units are supplied with liquid refrigerant, and an expansion valve inside each unit controls the amount of refrigerant flowing through. When refrigerant enters the cooling coil, it undergoes evaporation, removing heat from indoor air and thereby cooling the room. The heat extracted from indoor spaces is then rejected outdoors.

VRF systems are much more efficient than conventional packaged rooftop units (RTU), packaged terminal air conditioners (PTAC) and window units, according to HVAC engineering experts. Ductless mini-split systems and water-cooled chillers offer a similar efficiency in cooling mode but are unable to operate in heating mode.

VRF Systems in Heating Mode

Unlike cooling mode, where indoor units receive liquid refrigerant, here they are supplied with hot gas refrigerant. Gas flow to individual units is controlled with the same electronic expansion valves used for cooling mode, and the heating effect occurs when hot gas undergoes condensation.

The basic principle is still the refrigeration cycle, with the difference that heat is absorbed from outdoors and rejected indoors; in simple terms it is like air-conditioning the cooler outdoor environment to remove heat from it and use it indoors. This operating mode change is made possible with special 4-way reversing valves, which exchange the roles of evaporator and condenser between indoor and outdoor units.

In heating mode, the electric power consumed becomes useful heat, while in cooling mode it is rejected outdoors. Thus, a VRF outdoor unit can operate above 100% of its rated capacity when in heating mode. However, it is also important to note that the capacity may be derated, especially when the system is subject to a large variation in outdoor conditions. Longer piping lengths, longer distances between the outdoor unit and the last indoor unit, and higher vertical separation are some other causes of derating.

VRF Systems in Heat Recovery Mode

A heat recovery system is ideal when simultaneous heating and cooling are required. The greatest efficiency is achieved when the heating and cooling loads are equal, by maximizing the amount of energy transferred from one zone to another using the refrigerant. Heat rejection from cooling spaces can be utilized for space heating in the areas that need it at the same time. Thanks to this configuration, each occupant is free to choose either cooling or heating mode.

Heat recovery systems are very useful when a building has an east-west or south-north orientation with glass façades. East-west and south-north orientations cause a large difference in load requirements for each direction during the morning and evening, providing a chance for the VRF system to operate in simultaneous heating and cooling mode. Heat recovery is particularly useful in buildings with electrical rooms or data centers that need permanent cooling, since they also become a constant source of heat.

Heat Recovery System Piping Configurations in HVAC Engineering

Heat recovery systems come in 2-pipe and 3-pipe configurations, where the 2-pipe system is the option requiring the highest refrigerant flow. To operate with reduced flow, the 3-pipe system has a liquid line, a high-pressure gas line and a low-pressure gas line. The control function is achieved with a Mode Change Unit (MCU) or Mode Selection Box, which has three headers for high-pressure gas, low-pressure gas, and liquid.

  • When there are zones that need space heating, their indoor units work like condensers, supplying heat from the condensation of high-pressure refrigerant gas. After heating, the saturated refrigerant is fed to the liquid header.
  • Liquid refrigerant is then supplied to the units in space cooling mode, where it evaporates and absorbs heat, becoming a low-pressure gas.
  • The low-pressure gas is returned to its respective header and then to the compressor, repeating the cycle.

In this case, the outdoor unit must only provide the balance between heating and cooling – the one that is higher will determine the operating mode of the outdoor unit.

  • If cooling load is higher, the outdoor unit operates as a condenser, rejecting the surplus heat outdoors.
  • If the heating load is higher, the outdoor units operates as an evaporator, drawing from outdoor air the extra heat needed inside.

The best recommendation is locate the MCU in a public access area such as a corridor, thus minimizing noise and disruption for the end user. Maintenance of heat recovery systems is relatively easy, since the outdoor condenser unit is only connected to the MCU, facilitating system separation into upstream and downstream portions.

As per ASHRAE Standard 34-2013, the refrigerant concentration limit (RCL) is 26 lb per 1,000 ft3 of room volume for occupied spaces, and 13 lb per 1,000 ft3 for institutional buildings. This can be easily achieved by locating the units outside of compact rooms. According to Standard 15, a VRF system is classified as a direct system/high-probability system where a refrigerant leak can potentially enter occupied space.

The use of heat recovery systems in VRF proves to be better option, economically and environmentally, in these types of HVAC engineering systems. This spares the building owners from having to install and service two separate systems, while achieving a very high efficiency. With separate systems for space heating and cooling it is impossible to boost efficiency by exchanging heat, even if both systems are very efficient separately.

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2018-09-11T07:07:14+00:00