Heat pump scroll compressor range extended
The Performer PSH heat pump scroll compressor by Danfoss extended its range with six smaller capacity models, giving the compressors a heating capacity range of 19 to 80 kW.
Danfoss extended the range of its Performer PSH heat pump scroll compressor, adding six smaller capacity models to the product offering. As a result, Performer PSH heat pump scroll compressors now offer a heating capacity range of 19 to 80 kW, thanks to liquid injection technology. The compressor’s 149 F saturated condensing temperature allows for safe hot sanitary water production and comfortable space heating, even with old radiator systems. Evaporating temperatures as low as -22 F mean the compressor can be applied in colder regions. Performer PSH compressors can operate year-round and need no furnace backup. Compressors in the new range require fewer system components, which reduces costs. All models achieve a compressor coefficient of performance (COP) that surpasses requirements for the Eco label (3.4), with some air to water heat pumps posting a COP of 4.11 (equivalent to 14.02 EER).
Annual Salary Survey
After almost a decade of uncertainty, the confidence of plant floor managers is soaring. Even with a number of challenges and while implementing new technologies, there is a renewed sense of optimism among plant managers about their business and their future.
The respondents to the 2014 Plant Engineering Salary Survey come from throughout the U.S. and serve a variety of industries, but they are uniform in their optimism about manufacturing. This year’s survey found 79% consider manufacturing a secure career. That’s up from 75% in 2013 and significantly higher than the 63% figure when Plant Engineering first started asking that question a decade ago.