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 »
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 »
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 by a certified hvac… Read more »
Why Oil in Chillers is Old School Oil as a lubricant in a chiller makes for a significantly more complicated machine. There is a complete system that is designed and maintained to allow oil to lubricate a chiller. Check out this video which explains how the oil needs to supplied and maintained in a typical… Read more »
Energy Efficiency at its Peak! System performance and energy recovery rates of 70-90% are achieved with the new generation “Eiger” System Controller! The special design of Konvekta’s high-performance coils with headers on both sides of the coil ensures cross-counter flow and achieves almost pure counter current. This is a prerequisite for high energy efficiency in… Read more »
Air Handling Units — Replace or Refurbish? Good Question. Here in New England, we have lots of buildings with old and deteriorating air handling units. In many cases, the clear choice may be to replace the old AHU’s; however, there are many reasons, not just financial, as to why repair or refurbishment alternatives should also… Read more »
Topic: Energy-Efficient Makeup Air Units Guest Blogger: Hugh Crowther, P.ENG., Ashrae Member Unless you live in paradise, delivering makeup air to most buildings is expensive. Table 1 shows the amount of work it takes to heat and cool air (based on Chicago conditions) for a standard rooftop unit (a unit that recirculates air with typical… Read more »
Topic: High Performance Run Around Energy Recovery Systems Guest Blogger: Rudolf Zaengerle, Ph. D. Konvekta USA, Inc There is some confusion about the terms ‘efficiency’ and ‘effectiveness’: Efficiency ASHRAE defines ‘temperature transfer efficiency’ (or sometimes ‘enthalpy transfer efficiency’ if enthalpy is used instead of temperature) as follows: μT = (TE1 – TE2) / (TE1 –… Read more »
Konvekta is the only supplier of high efficiency pumped glycol run-around energy recovery systems in the world. They have been in the business of pumped glycol energy recovery since 1949. That’s all they do. Konvekta offers complete systems – high performance heat exchangers, energy recovery system controls and hydraulic assembly. Konvekta high-performance energy recovery systems… Read more »
Konvekta is the only supplier of high efficiency pumped glycol run-around energy recovery systems in the world. They have been in the business of pumped glycol energy recovery since 1949. That’s all they do. Konvekta offers complete systems – high performance heat exchangers, energy recovery system controls and hydraulic assembly. Konvekta high-performance energy recovery systems… Read more »