Experimental Study of Heat Pipe Heat Exchanger Multi Fin for Energy Efficiency Effort in Operating Room Air System

Muhammaddiyah, Syahrul; Winarta, Adi; Putra, Nandy

doi:10.14716/ijtech.v9i2.1150

Cited by 15 publications

(10 citation statements)

References 10 publications

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“…Thermal effectiveness calculated using Equation 1 was used to determine the performance of the U-shaped HPHE used in the HVAC system. Efficacy is defined as the actual to the highest heat transfer ratio in the HPHE (Jouhara, 2009;Hassan, 2012;Putra et al, 2017;Hakim et al, 2018;Jouhara & Meskimmon, 2018;Muhammaddiyah et al, 2018).…”

Section: Effectiveness Calculation Proceduresmentioning

confidence: 99%

The Application of U-shape Heat Pipe Heat Exchanger to Reduce Relative Humidity for Energy Conservation in Heating, Ventilation, and Air Conditioning (HVAC) Systems

Kusumah

Hakim²,

Sukarno

et al. 2019

IJTech

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Hospitals consume large amounts of energy, especially in their heating, ventilation, and air conditioning (HVAC) systems due to the special requirements for ensuring healthy, comfortable, and safe environmental conditions. The use of a Heat Pipe Heat Exchanger (HPHE) is recommended as a means of minimizing electricity consumption with no loss of comfort while also improving indoor air quality. An experimental study was conducted to investigate the performance of a U-shape HPHE in recovering exhaust air heat from an indoor room included in an HVAC system. The U-shape HPHE consists of several tubular U-shape heat pipes with water as a working fluid and arranged in a staggered configuration. Tests were carried out to determine the impact of the inlet air temperature, air velocity, and the number of heat pipes on its effectiveness. The experiment revealed that the higher the temperature of the inlet air, the more effective the U-shape HPHE. The results show that the temperature of the air entering the cooling coil decreased by 1.73 °C with an effectiveness value of 7.64 %. This result was achieved using 12 U-shape HPHEs, which had a staggered arrangement, an air velocity of 1.5 m / s, and an air temperature entering the evaporator of 45 °C. The highest amount of heat recovery, 2190.43 kJ/hour, was achieved when the air velocity was 2.5 m/s.

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Section: Effectiveness Calculation Proceduresmentioning

confidence: 99%

The Application of U-shape Heat Pipe Heat Exchanger to Reduce Relative Humidity for Energy Conservation in Heating, Ventilation, and Air Conditioning (HVAC) Systems

Kusumah

Hakim²,

Sukarno

et al. 2019

IJTech

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“…The heat pipe is a heat transfer device that has a high conductivity value. Applications of heat pipes are widely used for passive cooling in batteries, nuclear, electric motors or battery, rooms [8][9][10] . Kerrigan et al designed heat pipe radiators to utilize low enthalpy geothermal energy, the result is that radiators that use heat pipes have many advantages compared to conventional radiator panels.…”

Section: Introductionmentioning

confidence: 99%

Study of Heat Pipe Utilizing Low-Temperature Geothermal Energy and Zeolite-A for Tea Leaves Withering Process

Gunawan

Putra²,

Kusrini³

et al. 2020

Evergreen

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Conventional drying methods can be improved by utilizing geothermal energy and the addition of Zeolite-A as an absorbent from the synthesis of Kaolin, which has abundant resources in Indonesia. The use of geothermal energy for fossil energy substitution results in the development of more sustainable and safer environmentally, while the use of Kaolin as absorbent will increase economic value and reduce the export of raw materials in Indonesia. This research was conducted to study the effect of adding Zeolite-A to the heat pipe heat exchanger (HPHE) system that utilizes geothermal energy to the performance of tea withering. As a source of geothermal fluid, a water heater with a capacity of 9000 Watts and hot water flowed with a pump were used. The HPHE used was constructed of 42 pcs of heat pipes and 181 pcs of the fin. The heat pipe used had a length of 700 mm with an outer diameter of 10 mm, the fluid worked in the heat pipe using water with a filling ratio of 50%.The fin was made of aluminum with a thickness of 0.105 mm with a size of 76 x 345 mm. The results showed that the effectiveness of HPHE varied from 64.825% to 78.363%. The Henderson and Pabis model was the best model to represent the behavior of tea leaves using Zeolite-A, and the Page model for the withering of tea leaves without Zeolite-A. With the addition of Zeolite-A, the speed of tea leaves withering increased by about 18%. In addition to being environmentally friendly, the use of geothermal energy can be an alternative energy substitution for drying tea that uses firewood which is harmful to health because it becomes the source of anthraquinone (AQ) as a cause of cancer in humans.

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“…The result stated that after thermal tests, the loop heat pipe improves power and heat transfer-distance significantly without additional energy source (Maydanik et al, 2018). The effect of the heat pipe effective length also affects the velocity of the mass flow rate along the pipe, which also affects the final heat dissipation generated by the CPU (Muhammaddiyah et al, 2018;Winarta et al, 2019). Tan et al (2005) conducted an analytical study of flat plate heat pipe effective length using a point source approach.…”

Section: Introductionmentioning

confidence: 99%

Investigated on Thermal Design of Computer Cooling System with the Effective Length of Cascade Heat Pipe

Septiadi¹,

Prasetia²,

Murti³

et al. 2020

IJTech

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Experimental Study of Heat Pipe Heat Exchanger Multi Fin for Energy Efficiency Effort in Operating Room Air System

Cited by 15 publications

References 10 publications

The Application of U-shape Heat Pipe Heat Exchanger to Reduce Relative Humidity for Energy Conservation in Heating, Ventilation, and Air Conditioning (HVAC) Systems

The Application of U-shape Heat Pipe Heat Exchanger to Reduce Relative Humidity for Energy Conservation in Heating, Ventilation, and Air Conditioning (HVAC) Systems

Study of Heat Pipe Utilizing Low-Temperature Geothermal Energy and Zeolite-A for Tea Leaves Withering Process

Investigated on Thermal Design of Computer Cooling System with the Effective Length of Cascade Heat Pipe

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