Posts Tagged: hvac

Designing Mega-AHUs

The advent of fan arrays along with the increased cost competitiveness in the custom air-handling unit (AHU) market has given rise to a new AHU design option: very large AHUs, or mega-AHUs, designed for over 100,000 cfm (50 000 L/s). Here are the advantages and disadvantages of mega-AHUs vs. multiple floor-by-floor AHUs for high-rise buildings and reviews design considerations… Read more »

Chilled Water Coil – Circuiting Made Easy

Chilled Water Coil – Circuiting Made Easy (Credit to Guest Blogger: Dan Jacobs, Capital Coil & Air) Circuiting a chilled water coil is one of life’s great challenges in the coil business. You’re bound to run across folks with years of experience in the industry that can not effectively explain this concept. While not the most exciting of… Read more »

Green Material for Cooling Identified

Researchers from the UK and Spain have identified an eco-friendly solid that could replace the inefficient and polluting fluids used in most refrigerators and air conditioners  When put under pressure, plastic crystals of neopentylglycol (NPG) yield huge cooling effects—sufficient to make them competitive with conventional liquid coolants. In addition, the material is inexpensive, widely available… Read more »

Seresco NV: Dehumidification Through Ventilation

Seresco NV: Using naturally dry outside air to remove moisture Not every project requires compressors for dehumidification. In fact, the market for ventilation-only pool dehumidifiers is worth about $60 million per year in North America. You can take a piece of that pie, with the Seresco NV: dehumidification through ventilation. The NV uses naturally dry outside air to… Read more »

ACEEE 2018 State Energy Efficiency Scorecard

Massachusetts Ranks #1 as Most Energy Efficient State for 8th Year in a Row  As the US government loosens environmental rules, states are investing more in energy efficiency and delivering increased power savings, according to the 2018 State Energy Efficiency Scorecard. This 12th annual report from the American Council for an Energy-Efficient Economy (ACEEE), identifies the leaders… Read more »

Amherst College Science Center | Pumped Glycol Energy Recovery System

Project Name: Amherst College Science Center  Architect: Payette Associates Inc. Mechanical Engineer: Van Zelm Engineers Mechanical Contractor: Harry Grodsky & Company Equipment: Glycol Energy Recovery System with 20 AHU coils, 16 HRU Coils and Steam Humidifier Manufacturer: Konvekta DAC Sales Engineer: Rich Clarke Project Overview: During the past 15 years, enrollment in STEM classes increased… Read more »

Coils — Repair or Replace

Coils – To Repair or Replace (Credit to Guest Blogger: Dan Jacobs, Capital Coil & Air) There are multiple reasons why coils can fail prematurely. Sometimes, they simply freeze and can never be repaired. Other times, the coil was selected incorrectly, which in turn, made the coil significantly under-perform. Many times, there is substantial corrosion or something… Read more »

Klimor EVO – Evolution of Air

Klimor is excited to introduce their brand new product line, Klimor EVO.  Klimor EVO is a series of modular air handling units for air conditioning, ventilation, heating, cooling low pressure and high pressure systems.  Check out the following video: Klimor EVO systems are Efficient, Versatile, and Optimal and feature the following advantages: Anti-Corrosive Coating Fan –… Read more »

ASHRAE 180-2018 Standard Practice for Inspection and Maintenance of HVAC Systems

Standard Practice for Inspection and Maintenance of Commercial Building HVAC Systems For the public good, it’s essential that the HVAC systems in buildings where people work, visit, or reside support a high-quality indoor environment. In addition, sustainability mandates that those conditions be maintained in a manner as energy efficient as possible. Developed in collaboration with… Read more »