TY - JOUR
T1 - Technical and economic working domains of industrial heat pumps: Part 2 - ammonia-water hybrid absorption-compression heat pumps
AU - Jensen, Jonas Kjær
AU - Ommen, Torben Schmidt
AU - Markussen, Wiebke Brix
AU - Reinholdt, Lars
AU - Elmegaard, Brian
PY - 2015
Y1 - 2015
N2 - The ammonia-water hybrid absorption-compression heat pump (HACHP) has been proposed as 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 available 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 150 °C and temperature lifts up to 60 K, all with economical benefits for the investor.
AB - The ammonia-water hybrid absorption-compression heat pump (HACHP) has been proposed as 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 available 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 150 °C and temperature lifts up to 60 K, all with economical benefits for the investor.
KW - Industrial heat pumps
KW - Working domain
KW - Absorption-compression heat pump
KW - Economic evaluation
KW - Natural refrigerants
U2 - 10.1016/j.ijrefrig.2015.02.011
DO - 10.1016/j.ijrefrig.2015.02.011
M3 - Journal article
SN - 0140-7007
VL - 55
SP - 183
EP - 200
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
ER -