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New Siemens Magnetic Expansion Valve Increases R290 Heat Pump Efficiency by 16% Over Electronic Valve, Says Refra
The new valve allows superheat control to within 0.1‒0.2K, while electronic valves control within 2‒3K.
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Tumble dryer harnesses R290 heat pump
Siemens is selling a smart tumble dryer using a propane heat pump.