The ammonia-water hybrid absorption-compression heat pump (HACHP) is a relevant technology for industrial heat supply, especially for high sink temperatures and high temperature glides in the sink and source. This is due to the reduced vapour pressure and the non-isothermal phase change of the zeotropic mixture, ammonia-water. To evaluate to which extent these advantages can be translated into feasible heat pump solutions, the working domain of the HACHP is investigated based on technical and economic constraints. The HACHP working domain is compared to that of the best possible vapour compression heat pump with natural working fluids. This shows that the HACHP increases the temperature lifts and heat supply temperatures that are feasible to produce with a heat pump. The HACHP is shown to be capable of delivering heat supply temperatures as high as 140 XC and temperature lifts up to 60 K, all with economical benefits for the investor.
|Title of host publication||Proceedings of 11th IIR Gustav Lorentzen Conference on Natural Refrigerants|
|Number of pages||8|
|Publisher||Chinese Association of Refrigeration|
|Publication status||Published - 2014|
|Event||11th IIR Gustav Lorentzen Conference on Natural Refrigerants - Hangzhou, China|
Duration: 31 Aug 2014 → 2 Sep 2014
Conference number: 11
|Conference||11th IIR Gustav Lorentzen Conference on Natural Refrigerants|
|Period||31/08/2014 → 02/09/2014|
Jensen, J. K., Ommen, T. S., Markussen, W. B., Reinholdt, L., & Elmegaard, B. (2014). Technical and Economic Working Domains of Industrial Heat Pumps: Part 2 - Ammonia-Water Hybrid Absorption-Compression Heat Pumps. In Proceedings of 11th IIR Gustav Lorentzen Conference on Natural Refrigerants Chinese Association of Refrigeration.