Simulation of an ammonia-water heat pump water heater with combustion products-driven evaporator

Journal Article · Mon Dec 19 00:00:00 EST 2016 · International Journal of Refrigeration

DOI:https://doi.org/10.1016/j.ijrefrig.2016.12.006· OSTI ID:1350921

Perez-Blanco, Horacio ^[1]; Gluesenkamp, K. ^[2]; Ally, Moonis Raza ^[2]

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1. The Pennsylvania State Univ., University Park, PA (United States)
2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Here, the objective of this work is to simulate a single effct (SE) ammonia-water heat pump for domestic water heating, with innovative aspects for cycle simulation and eventual implementation. Seasonal temperature variations demand verfication of distillation column viability. For the given application and temperature ranges, it is found that some variables need to be controlled if the same column is to be used all year round. In addition, a number of simplifications are considered in this work: an advanced evaporator requireing minimal gas flow and surface area, subcooling at two crucial spots of the cycle and the viability of some pump designs to assuage cavitation issues.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Building Technologies Research and Integration Center (BTRIC)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1350921
• Alternate ID(s): OSTI ID: 1396488
• Journal Information: International Journal of Refrigeration, Vol. 75, Issue C; ISSN 0140-7007
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
42 ENGINEERING
heat pumps
refrigeration
water-heater
ammonia-water
absorption
distillation
domestic water