Drew Turner is the Global Marketing Manager for Danfoss Oil-free Solutions. Turner has been in the HVAC industry for over twenty years and with Danfoss for the last six, holding a variety of roles over his career, including Product Support, Product Marketing, Product Planning, Strategic Planning, Business Development/Market Research. He holds a Bachelor’s in Industrial Engineering from Oklahoma State University and a Master’s in Business Administration from the University of Colorado. Drew enjoys conquering Colorado’s 14ers with his son, Ethan, and dog, Bean.
Drew Turner, Global Marketing Manager for Oil-free Solutions at Danfoss, joins host John Sheff in this episode of the Envisioneering Exchange podcast for a dialogue about heat pump and oil-free technologies, their benefits and advantages (especially compared to traditional boiler-based systems), and their roles in district heating systems.
- Heat pumps work the same as chillers, just in reverse.
- By using a heat pump, traditional boilers can be eliminated.
- While two separate systems (one for heating and one for cooling) are typically seen in the commercial buildings in the US, one system is more common in Europe and China.
- From a first-cost perspective, heat pumps are attractive because one system will cost less than two systems.
- From an operational perspective, heat pumps are much more efficient than traditional boiler-based heating systems.
- Traditional fossil-fuel powered boilers typically have a coefficient of performance (COP) somewhere between 0.8 and 1.2. Heat pumps can be expected to have a COP between 3.5 and 4.5.
- Variable-speed technology simply doesn’t exist for traditional boiler-based systems. For part-load conditions, variable-speed technology in heat pumps can improve efficiency by as much as 50%.
- Compared to commercial systems, residential systems in the US are much more likely to have a heat pump.
- While oil-free technology (using magnetic bearings and centrifugal compression) was designed for cooling systems, it can also be applied to heat pumps.
- Depending on the application and technologies used, heat pump systems can lower carbon emissions between 40% and 60%.
- Heat pumps in district heating systems that connect multiple buildings, while present in the US, are much more prevalent in Europe. District heating allows for even greater efficiency than at the individual building level.
- Because of this increased efficiency, many more cities and municipalities are looking to add district heating infrastructure.
- District heating systems are able to utilize waste heat, further increasing efficiency.
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