Sweetening the absorption option
Today’s single-stage absorbers can generate chilled water from hot water as low in temperature as 190°F.
Especially in institutional applications, it may also make sense to use recovered heat, perhaps from a boiler economizer, to supply energy for a single-stage absorption chiller. This unit could supplement an existing chiller plant to provide chilled water at an operating cost much lower than an electric chiller in the warm months, or even year-round. Today's single-stage absorbers can generate chilled water from hot water as low in temperature as 190°F.
Even if the temperature of the recovered heat stream is not this high, it could very effectively reduce the cost of the heat input to either a hot water or steam absorption chiller. Again, it's important to balance the cost of adding absorption chiller capacity versus the reduction in operating costs. If you already operate a hot-water chiller, the payback from streaming hot water with recovered heat could be very attractive.
- Events & Awards
- Magazine Archives
- Oil & Gas Engineering
- Salary Survey
- Digital Reports
Annual Salary Survey
Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.
There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.
But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.
Read more: 2015 Salary Survey