GREENVILLE, Ill. — Enertech Global, a manufacturer of ground-source and air-to-water heat pumps, has launched the WV, a variable-speed hydronic heat pump that the company says is engineered for ...

Abstract: Addressing the issue of hydraulic interference caused by variable-speed pumped storage units to individual units with a shared water delivery system, this study conducts numerical simulation ...

1 School of Energy and Power Engineering, Beihang University, Beijing, China 2 Fuwai Hospital State Key Laboratory of Cardiovascular Disease, Beijing, China Introduction: Constant-speed methods are ...

The Department of Energy (DOE) now requires new pool pump motors and replacement dedicated purpose pool pumps (DPPP) for most in-ground pools to be variable speed because they are more energy-… ...

Abstract: A pump-controlled electrohydraulic servo steering system (PC-EHSSS) is proposed, to accommodate high energy-efficiency steering control of heavy vehicles; whereas, it's prone to ...

Government incentives and tax credits have made the switch to heat pumps more affordable for consumers who want to lower energy costs and improve efficiency in their homes. As the “heart of the HVAC ...

Changes are likely coming to Eagle Road. The Idaho Transportation Department is proposing a pilot project that will include more safety signs, prohibiting left turns at intersections that do not have ...

At its Malta Oberstufe pumped storage power plant, Verbund executed an overhaul that involved replacing the existing generator and hydraulic systems with new variable speed solutions. The utility used ...