Annexair has unveiled a brand-new eco-friendly ventilation system: a Biocomposite central air unit made of recycled plastic water bottles With the rise of globalization, the desire to advance technology without harming future generations has become increasingly important. Being able to offer green energy solutions and eco-friendly materials at competitive prices will be key to achieving… Read more »
Posts By: Carol Meader
Custom Air Handling Unit Design Critical Decisions

The design of an air handling unit is a major decision and is a complex and sophisticated activity but here are the critical design decisions when designing a custom AHU. Enclosure Construction Structural Capacity and Air Tightness 1/200th of the span deflection and less then 1% casing leakage at 1.5 times the total of the… Read more »
Annexair Unveils First Ever Biocomposite Ventilation Unit
Recycled plastic water bottles promotes sustainable air conditioning! Annexair has unveiled a brand-new eco-friendly ventilation system: a Biocomposite central air unit made of recycled plastic water bottles! The Biocomposite unit was unveiled during the Expo AHR in Orlando, Florida, and will be competitively priced on the HVAC market. This new product was thoughtfully designed in-house after… Read more »
Project Snapshot: Alkermes

Project Name: Alkermes Architect: Elkus Manfredi Archtects Mechanical Engineer: AHA Consulting Engineers Mechanical Contractor: Hamel & McAlister Equipment: (2) Custom Penthouse AHUs, (2) EAHUs, (1) Konvekta Heat Recovery Skid (6) MK Plastics High Plume Dilution Fans, (2) 450 ton Oil-Free Chillers, (21) Carel HeaterSteam Humidifiers Manufacturer: Konvekta, Cambridgeport, MK Plastics, Smardt, Ingenia Carel Size: 140,000 CFM… Read more »
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 »
Seresco: R3 Module Now Available for 2-16 Ton Units

Seresco R3 Module Now Available for 2-16 Ton Units The innovative R3 Module from Seresco has been expanded and can now be selected for any Compact NE Series unit from 2–16 tons. The R3 Module is an excellent choice for small applications such as many hotels and small rec facilities. You can get great, exclusive features… 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 »
Project Snapshot: Beverly Middle School | Thermo-Composite DX Units

Project Name: Beverly Middle School Architect: Ai3 Architects Mechanical Engineer: Griffith and Vary Mechanical Contractor: PJ Kennedy & Sons Equipment: 13 Rooftop Units with DX Manufacturer: Annexair Size: 5,700, 5,100, 6,800, 5,400, 4,500 5,600, 6000, 6,300, 5,750, 4825, 4,700, 6,600, 7,800 CFM DAC Sales Engineer: Pat Will Project Overview: The City of Beverly embarked upon… 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 »
Konvekta Reduces Energy Consumption up to 80%!

GROUND BREAKING! High-Efficiency Run Around Energy Recovery Systems Reducing Energy Consumption up to 80%! FIRST there were glycol run around loops 40% efficiency THEN came plate and frame heat exchangers 60% efficiency NEXT came heat recovery wheels 70% efficiency NOW, high-efficiency energy recovery coils UP to 80% EFFICIENCY! Konvketa guarantees the amount of energy recovered!… Read more »