The Grundfos PACOpaQ® is a fully-integrated and compact HVAC packaged pumping system designed for chilled and hot water distribution, condenser water, geothermal loop, district heating and cooling, and many other water-based systems. The system pairs centrifugal pumps with the intelligence and efficiency of a dedicated HVAC control, which automatically determines the most efficient speed and optimum number of pumps needed to meet desired flow and pressure.
In an effort to meet the need for optimum efficiency and energy savings across all building loads, Armstrong Fluid Technology says that its Design Envelope pumps are now also available with single-phase motors. Ideal for light commercial, residential, and industrial applications using single phase power, the company claims the new pumps allow designers, contractors, project managers, and building owners to choose the best pumping solution for their specific needs.
According to Ashcroft officials, it only takes a small formation of ice deep inside the inlet cavity of a pressure transducer to destroy the sensing element. To prevent this, Ashcroft engineers have developed a unique media isolation method for the G2, T2, and KM15 pressure transducers.
Many engineers tend to avoid or delegate the nitty gritty of a ground source heat pump system, from soil moisture effects to building system (im) balance. It's time for designers to get in the loop. Learn more about Grounded In Reality in the December issue. Other topics in the December issue include health care HVAC, Boilders, check out the Back2Basics, and more.