TY - GEN
T1 - Development of high performance air-conditioning system combined liquid desiccant and R718 centrifugal heat pump
AU - Yabase, Hajime
AU - Yamaguchi, Seiichi
AU - Saito, Kiyoshi
AU - Hasuike, Hiroshi
AU - Sakamoto, Hayato
AU - Matsumoto, Satoru
AU - Harada, Masatoshi
N1 - Funding Information:
This research work was conducted by “FY2016 Low Carbon Technology Research and Development Program: Development of High Performance Air-conditioning System Combining Liquid Desiccant and R718 Centrifugal Heat Pump” commissioned by Ministry of the Environment Japan.
Publisher Copyright:
© 2018 International Institute of Refrigeration. All rights reserved.
PY - 2018
Y1 - 2018
N2 - General implementation of air conditioning in buildings and facilities is such that in order to keep room temperature and humidity within predetermined range, heat pump is used to lower the air temperature to achieve desired humidity and then the air is heated to the specified temperature. From energy-saving perspective, this process is inefficient. To overcome such inefficiency, separation of latent heat and sensible heat has been proposed. This is a two-step process in which temperature and humidity are adjusted separately in two steps by combining desiccant dehumidifier and heat pump. Theoretically, the system is known to be effective in reducing energy consumption, but in practical application, this technology can be further improved. For this research, we have chosen liquid desiccant dehumidifier as the desiccant can be regenerated at low temperature. For heat pump system, we have chosen R718 centrifugal as it is suited for increasing efficiency for such combination of desiccant and heat pump. By improving each element of the system and seeking optimization of operating conditions, we aim to develop a high efficiency air-conditioning system. The result is reported here.
AB - General implementation of air conditioning in buildings and facilities is such that in order to keep room temperature and humidity within predetermined range, heat pump is used to lower the air temperature to achieve desired humidity and then the air is heated to the specified temperature. From energy-saving perspective, this process is inefficient. To overcome such inefficiency, separation of latent heat and sensible heat has been proposed. This is a two-step process in which temperature and humidity are adjusted separately in two steps by combining desiccant dehumidifier and heat pump. Theoretically, the system is known to be effective in reducing energy consumption, but in practical application, this technology can be further improved. For this research, we have chosen liquid desiccant dehumidifier as the desiccant can be regenerated at low temperature. For heat pump system, we have chosen R718 centrifugal as it is suited for increasing efficiency for such combination of desiccant and heat pump. By improving each element of the system and seeking optimization of operating conditions, we aim to develop a high efficiency air-conditioning system. The result is reported here.
KW - Air-conditioning system
KW - Centrifugal heat pump
KW - High efficiency
KW - Liquid desiccant
KW - R718
UR - http://www.scopus.com/inward/record.url?scp=85049865835&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049865835&partnerID=8YFLogxK
U2 - 10.18462/iir.gl.2018.1397
DO - 10.18462/iir.gl.2018.1397
M3 - Conference contribution
AN - SCOPUS:85049865835
T3 - Refrigeration Science and Technology
SP - 1345
EP - 1352
BT - 13th IIR Gustav Lorentzen Conference on Natural Refrigerants
PB - International Institute of Refrigeration
T2 - 13th IIR Gustav Lorentzen Conference on Natural Refrigerants: Natural Refrigerant Solutions for Warm Climate Countries
Y2 - 18 June 2018 through 20 June 2018
ER -
