Electric HVAC systems can help you keep your home comfortable using a fraction of the energy. We spoke to experts to find out just how efficient they are. Mike De Socio is a CNET contributor who ...

Advanced inlet guide vane (IGV) and diffuser vane (DV) geometries were constructed in an effort to increase the energy performance of an axial-flow pump at the best efficiency point (BEP). DV setting ...

In this study, numerical simulation was employed to predict the performance and internal flow characteristics of the inlet of an axial-flow pump by assigning an absolute flow angle to the inlet guide ...

Outside a 100-year-old house on the edge of the Peak District in northern England, a heat pump’s fan blades are swiftly spinning. They’re drawing outdoor air over coils of refrigerant, harvesting ...

The residential heating and cooling industry is facing unprecedented regulatory changes from both federal and state mandates. Government leaders from 24 states have instituted ambitious residential ...

This has been discussed before on Ars, such as at https://arstechnica.com/civis/threa...ost-efficient-heat-pump-in-the-world.1501605/, and https://arstechnica.com ...

Traditional sucker rod pumps (SRP) use a single traveling valve, but recent double traveling valve innovations have improved SRP performance and efficiency in field applications with double traveling ...

STANDISH, ME - SEPTEMBER 25: Aaron Sinclair, of Dave's World, installs a heat pump at the home of Roland and Dale Bois on September 25, 2018. Sinclair, who has worked installing heat pumps for two ...