Experimental study on utilization of heat pipe heat exchanger for energy conservation of air conditioning system in a hospitals and its techno-economic feasibility

Imansyah Ibnu Hakim, Nandy Putra, Ragil Sukarno, Muhammad Rifqi Audi, Fadhil Fuad Rachman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publication4th International Tropical Renewable Energy Conference, i-TREC 2019
EditorsEny Kusrini, I. Gde Dharma Nugraha
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420144
DOIs
Publication statusPublished - 3 Sep 2020
Event4th International Tropical Renewable Energy Conference 2019, i-TREC 2019 - Bali, Indonesia
Duration: 14 Aug 201916 Aug 2019

Publication series

NameAIP Conference Proceedings
Volume2255
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th International Tropical Renewable Energy Conference 2019, i-TREC 2019
Country/TerritoryIndonesia
CityBali
Period14/08/1916/08/19

Keywords

  • effectiveness
  • energy saving
  • Heat pipe heat exchanger
  • payback periods

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