The application of condensate water as an additional cooling media intermittently in condenser of a split air conditioning

Ardita, I Nengah; Subagia, I Wayan

doi:10.1088/1742-6596/953/1/012059

Cited by 9 publications

(5 citation statements)

References 5 publications

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“…[1]. Power consumption is a significant issue during the vapor compression cycles of air conditioning systems that use aircooled condensers [2]. Many techniques have been used to reduce the energy consumption of the air conditioning system.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Cooling Water Loop on the Exergy Destruction Components of Split Air Conditioning Systems

Ahmed¹,

Ali²

2023

(AREJ)

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The present study is an experimental investigation to improve the performance of the air conditioning unit (ACU) by precooling the condenser with a cooling water loop using a water heat exchanger with the employment of energy and exergy analyses under various ambient temperatures between 30 -45C at different inlet water temperatures; 15, 19, 24 and 30C and water flowrates; 9, 11, 14 and 15.8 L/min. The results indicated that the cooling water loop have a large effect on the exergy destructions as compared with those of the no water case. When a cooling water loop is used, the compressor, evaporator, and expansion valve irreversibilities reduced. The exergy efficiency of the unit decreases as Tamb increases to about 23%; while, the exergy efficiency increases when cooling water loop is used depending on the inlet water temperature and water flowrates. The maximum enhancement in the exergy efficiency is obtained at high water flowrate for Twi = 15C with a percentage value about 13% as compared with those of the conventional ACU.

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Section: Introductionmentioning

confidence: 99%

The Effect of the Cooling Water Loop on the Exergy Destruction Components of Split Air Conditioning Systems

Ahmed¹,

Ali²

2023

(AREJ)

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“…More recently authors paid increased interest in the use of water condensate -a free cold energy-. Research published by Ardita et al [4,5] investigated the use of water condensate to reduce the temperature surrounding the condenser to pre-cool the air entering the condensing unit to improve refrigerant cooling. A maximum temperature reduction at the air outlet surface of the condenser of 2.2℃ was observed at ambient temperature 35℃ [5].…”

Section: Introductionmentioning

confidence: 99%

Development of a Stand-Alone Thermoelectric Power Generator Using Heat of Refrigerant Leaving the Condenser and Self-Cooled by Condensate of a Split-Type Air Conditioning

Roungbungrud¹,

Chantawong²,

Khedari³

2022

IJHT

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Today waste heat recovery of air conditioning is receiving considerable attention worldwide. This paper reports investigation on the development of a stand-alone thermoelectric power generator (STEG) using heat of refrigerant leaving the condenser and self-cooled by condensate of a split-type air conditioning. The STEG is composed of a small hollowed aluminum block integrated in the hot refrigerant line leaving the condenser to collect and transfer heat to the hot side of two thermoelectric (TE) modules 40 x 40 mm installed on the right and left. To cool the TE modules, water condensate circulates by gravity inside two aluminum alloy blocks. Tests were conducted using 2-tons split-type air conditioner installed in a 64 m3 room of a residential house in Bangkok. Electrical current generated by the two TE modules was recorded separately and connected in series three times for each case. Experimental results showed that STEG can produce electrical current continuously and varied depending on the operation on the compressor. The more important the cooling, the higher is the voltage produced. The maximum recorded voltage is about 200-250 mV by each TE module and doubled with the TE modules connected in series. The average water condensate flowrate was 11.56 g/min. The average coefficient of performance (COP) and the average Energy Efficiency Ratio (EER) of the air conditioning with STEG were 1.87-1.88 and 6.38-6.42 respectively, 3% higher than those of the conventional system.

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“…Their results notified that this method was feasible for water extraction at higher temperatures and lower relative humilities. Ardita and Subagia 9 produced a condensate from the indoor split air conditioner. The condensate produced was at a rate of 16–20 ml/min between the temperatures 19°C and 22°C.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of condensate water quantity and coefficient of performance of an air conditioning system: An experimental study

Meher¹,

Sagari

2021

Heat Trans

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The objective of the present work is to increase the quantity of condensate water from atmospheric air during the air conditioning (A/C) process by using two techniques: increasing moisture content in atmospheric air by adding steam and passing compressed air instead of atmospheric air, respectively. The experiment was performed with both capillary valve and thermostatic expansion valve operations for assessing the volume flow rates (VFRs) of condensate and coefficient of performance (COP) concerning the air A/C arrangement. The control valve operated for the steam supply case was at half valve opening and one‐fourth opening, respectively. The R‐22 refrigerant was used in this study. From this study, it was perceived that the condensate water quantity was increased by adding the moisture to the inlet air for the A/C system simultaneously with the usage of compressed air. Furthermore, the COP of the system was also compared to normal atmospheric air admission conditions. The compressed air and steam admission to the A/C system has shown a tremendous increase in COP together with the VFR of the system rather than atmospheric air admission conditions.

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The application of condensate water as an additional cooling media intermittently in condenser of a split air conditioning

Cited by 9 publications

References 5 publications

The Effect of the Cooling Water Loop on the Exergy Destruction Components of Split Air Conditioning Systems

The Effect of the Cooling Water Loop on the Exergy Destruction Components of Split Air Conditioning Systems

Development of a Stand-Alone Thermoelectric Power Generator Using Heat of Refrigerant Leaving the Condenser and Self-Cooled by Condensate of a Split-Type Air Conditioning

Enhancement of condensate water quantity and coefficient of performance of an air conditioning system: An experimental study

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