TY - GEN
T1 - Experimental study on utilization of heat pipe heat exchanger for energy conservation of air conditioning system in a hospitals and its techno-economic feasibility
AU - Hakim, Imansyah Ibnu
AU - Putra, Nandy
AU - Sukarno, Ragil
AU - Audi, Muhammad Rifqi
AU - Rachman, Fadhil Fuad
N1 - Funding Information:
The author would like to thank the Directorate of Research and Community Engagements Universitas Indonesia (DRPM UI) for funding this research through the PITTA 2019 scheme with contract number NKB-0738/UN2.R3.1/HKP.05.00/2019.
Publisher Copyright:
© 2020 Author(s).
PY - 2020/9/3
Y1 - 2020/9/3
N2 - With its growing economy and population, the need of energy for facilities in Indonesia increases, particularly in a hospital. Energy needs for the air conditioning system in the hospital is very large, so that the effort to use energy efficiently becomes very important. The purpose of this study is to investigate the influence of heat pipe heat exchanger (HPHE) applied to the ducting of air conditioning system to effectiveness and energy recovery. This study will also focus on economic analysis to determine the feasibility of HPHE applied in the air conditioning system. The HPHE used in this research is varied in 1, 2, and 3 modules which consists of 12 heat pipes each module are arranged in staggered configuration. Air inlet temperature in the evaporator section is varied of 28, 30, 35, and 40 ° C, and air inlet velocity varied of 1.5, 2.0, 2.5 m/s. Material, production, and installation cost of HPHE in 1, 2, and 3 modules are calculated and compared with electricity energy saving to know how long of time to recover the investment of HPHE. The results show that the maximum effectiveness of 40.25 % obtained at 3 modules of HPHE, with air inlet temperature of 40°C, and the inlet air velocity of 1.5 m/s. It is also found that a maximum heat recovery of 400.54 Watts and annual cost saving of IDR 1.410.205 per year is found when the inlet temperature of 40°C, air velocity of 2.5 m/s, and with three modules installed into the ducting of the air conditioning system. With energy saving of IDR 723,190 per year on air inlet temperature 40 °C and air velocity 2.5 m/s, HPHE with 1 module has a shorter payback period than HPHE with 2 and 3-modules.
AB - With its growing economy and population, the need of energy for facilities in Indonesia increases, particularly in a hospital. Energy needs for the air conditioning system in the hospital is very large, so that the effort to use energy efficiently becomes very important. The purpose of this study is to investigate the influence of heat pipe heat exchanger (HPHE) applied to the ducting of air conditioning system to effectiveness and energy recovery. This study will also focus on economic analysis to determine the feasibility of HPHE applied in the air conditioning system. The HPHE used in this research is varied in 1, 2, and 3 modules which consists of 12 heat pipes each module are arranged in staggered configuration. Air inlet temperature in the evaporator section is varied of 28, 30, 35, and 40 ° C, and air inlet velocity varied of 1.5, 2.0, 2.5 m/s. Material, production, and installation cost of HPHE in 1, 2, and 3 modules are calculated and compared with electricity energy saving to know how long of time to recover the investment of HPHE. The results show that the maximum effectiveness of 40.25 % obtained at 3 modules of HPHE, with air inlet temperature of 40°C, and the inlet air velocity of 1.5 m/s. It is also found that a maximum heat recovery of 400.54 Watts and annual cost saving of IDR 1.410.205 per year is found when the inlet temperature of 40°C, air velocity of 2.5 m/s, and with three modules installed into the ducting of the air conditioning system. With energy saving of IDR 723,190 per year on air inlet temperature 40 °C and air velocity 2.5 m/s, HPHE with 1 module has a shorter payback period than HPHE with 2 and 3-modules.
KW - effectiveness
KW - energy saving
KW - Heat pipe heat exchanger
KW - payback periods
UR - http://www.scopus.com/inward/record.url?scp=85092067749&partnerID=8YFLogxK
U2 - 10.1063/5.0014138
DO - 10.1063/5.0014138
M3 - Conference contribution
AN - SCOPUS:85092067749
T3 - AIP Conference Proceedings
BT - 4th International Tropical Renewable Energy Conference, i-TREC 2019
A2 - Kusrini, Eny
A2 - Nugraha, I. Gde Dharma
PB - American Institute of Physics Inc.
T2 - 4th International Tropical Renewable Energy Conference 2019, i-TREC 2019
Y2 - 14 August 2019 through 16 August 2019
ER -