Selecting the Right Type of Electrical Raceway for your Architectural Engineering Project: Nonmetallic Conduit Options

Our previous article covered the main types of metallic conduit for electrical conductors, and now we will discuss nonmetallic conduit and its applications in architectural engineering and other engineering areas. Nonmetallic conduit is normally the more affordable option, providing improved electrical isolation and corrosion resistance, while reducing the degree of physical protection. Like with metallic conduit, all electrical installations must be according to the NFPA National Electric Code and local electrical codes. Conductors are [...]

Operating Modes of VRF Systems in HVAC Engineering

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 [...]

2018-09-17T21:35:50+00:00HVAC Engineering|

US Department of Energy: Electrical Engineering Efficiency Standards for Appliances and Equipment

Energy and electrical engineering in all its forms are complex technical topics, and for the general public it can be hard to tell which products are energy efficient. The US Department of Energy (DOE) has been creating and enforcing standards since 1979 to ensure that appliances and equipment provide value for customers. This has been one of the most effective energy efficiency policies ever implemented by the US, yielding billions of dollars in energy [...]

MEP Engineering in Upgrading Space Cooling Systems for Multifamily Buildings

Most space cooling systems are powered by electricity, but some of the larger buildings also use absorption chillers powered by natural gas or district steam. Only space heating, plug loads and lighting consume more energy than space cooling in NYC. There is a significant opportunity for MEP engineering to improve cooling efficiency in the multifamily residential sector, where almost half of all buildings use inefficient air conditioning systems: Window-type air conditioners Through-the-wall air conditioners [...]

2018-09-17T21:25:37+00:00MEP Engineering|

Understanding Value Engineering in Upgrading LED Lighting Systems: Lamp Replacements, Retrofits and Fixture Replacements

LED lighting upgrades can be classified into three broad types based on how much the existing installation is modified: lamp replacements, retrofits and fixture replacements. You can normally achieve higher performance by upgrading more lighting system components, but the project cost is also increased. However, governments and utility companies may introduce rebate programs for energy-efficient lighting, and an expensive project can end up being high value engineering after a good rebate. Like with any [...]

2018-09-17T21:22:18+00:00Value Engineering|

Is your Mechanical Engineering Consulting Firm Getting Too Expensive?

Consulting services normally come with a price premium because they grant access to the knowledge of mechanical engineering experts, on demand and with the exact time commitment needed by the client. The alternatives to hiring consulting services are to train specialists in-house, which requires plenty of time; or hiring experts full-time, which is not always cost-effective. Of course, this doesn’t mean consulting services should be overpriced either. Consulting firms and their clients can [...]

How to Select a Contractor for Mechanical Engineering Projects

Tips for Effective Contractor Selection in Engineering Projects One of the key elements that determines project success is selecting the right contractor for the job. Although it may be tempting to focus on minimizing cost, a better approach is to maximize value and optimize cost. After all, a mechanical engineering project of any kind is an investment; the best offer is not always the one with the lowest price, but the one that offers [...]

Mechanical Engineering Design Options to Heat and Cool Residential Buildings

There is a broad range of mechanical engineering and design options available for meeting the heating and cooling needs of residential buildings. Normally, these systems differ in terms of the medium used to deliver their heating or cooling output. Water Piping: Water source heat pumps, radiators using chillers, cooling towers, and boilers. Air Ducts: Packaged rooftop units, packaged ceiling hung units Refrigerant Lines: Split AC systems, VRF systems Direct: Used by window-type air conditioners and PTAC units, which operatedirectly [...]

How Mechanical Engineers Compare Operating Expenses of Different Water Heater Models

One of the key characteristics to consider when deciding between several water heater options is the operating cost; the heater with the lowest price tag is not necessarily the least expensive to own in the long term. Operating cost is determined in great part by equipment efficiency, but there are other equally important factors that mechanical engineers want you to consider: Energy sources have different unit prices. In the case of heating systems, the [...]

How MEP Engineers Explain Radiant Floor Heating and Its Benefits

Radiant floor heating consists of delivering heat through the existing floor surface, as opposed to using air ducts or baseboard heaters. The upfront cost of radiant floor heating is generally higher than that of other systems, since it is necessary for MEP engineers to install hot water piping or electrical wiring under the floor. However, this is compensated by improved comfort and energy efficiency. According to the US Department of Energy, space heating is [...]

2018-09-17T20:49:21+00:00MEP Engineering|