Experimental investigation of two-stage indirect/direct evaporative cooling system in various climatic conditions

Heidarinejad, Ghassem; Bozorgmehr, Mojtaba; Delfani, Shahram; Esmaeelian, Jafar

doi:10.1016/j.buildenv.2009.02.017

Cited by 198 publications

(65 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The overall relative humidity was between 50 and 75%, which is ideal for fruits and vegetables. Heidarinejad et al [26] investigated the performance of TSEC in different regions of Iran experimentally. Results indicated that IEC effectiveness differed ranging from 55 to 61%.…”

Section: Fig 4 Schematic Diagram Of Tsecmentioning

confidence: 99%

Theoretical Analysis of Combined Compact Evaporative Cooler

Ismael

Ezzi

2018

Proceeding of 3rd Thermal and Fluids Engineering Conference (TFEC)

View full text Add to dashboard Cite

An evaporative cooling system (ECS) has a number of benefits. First and foremost, it will use only a fraction of the energy of typical compressor-based cooling systems. ECS's is divided into three different types: 1) direct evaporative coolers (DECs), 2) indirect evaporative coolers (IECs), and (3) a combined system of direct and indirect evaporative coolers (DIECs). Although the DEC is simple and economical, the efficiency is low, as it cannot achieve a cooling temperature lower than wet bulb temperature. While some IECs or DIECs can achieve a higher performance, the system is complex and the initial cost is high. This paper presents a theoretical model of a combined compact evaporative cooler (CCEC), which utilizes thin film evaporation. To verify the model, the prediction has compared with experimental data, and results show that the model can be used to predict the effects of relative humidity and air flow rate based on the wet bulb effectiveness and dew point effectiveness in this CCEC system. Most importantly, it shows that this CCEC system can achieve an ultra-high cooling efficiency.

show abstract

Section: Fig 4 Schematic Diagram Of Tsecmentioning

confidence: 99%

Theoretical Analysis of Combined Compact Evaporative Cooler

Ismael

Ezzi

2018

Proceeding of 3rd Thermal and Fluids Engineering Conference (TFEC)

View full text Add to dashboard Cite

show abstract

“…The effectiveness of direct evaporative cooling systems, in terms of temperature reduction, is approximately 70-95% [10,11]. The cooling effect is as high as the moisture content of the external air is low, therefore the evaporative cooling system is very suitable for hot and temperate climates, where the humidity is usually low also in the hot season [12,13]. In hot and humid climates an indirect evaporative cooling systems are more efficient in terms of igrothermal comfort since they do not allow for increasing the moisture content of the supplied air.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Evaporative Cooling Systems in Industrial Buildings

Angelis¹,

Medici²,

Saro³

et al. 2015

IJHT

View full text Add to dashboard Cite

“…A variety of cooling technologies can be integrated with the LDD system, such as vapour compression, vapour absorption and evaporative cooling. Among them, the evaporative cooling system has been widely applied because of its lower installation and running costs [21]. Compared with a vapour compression air conditioning system, the reduction in energy consumption of an evaporative cooler is over 75% [22].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of a membrane liquid desiccant dehumidification cooling system based on experimental investigations

Chen

Zhu

Bai

2017

Energy and Buildings

View full text Add to dashboard Cite

A membrane-based liquid desiccant dehumidification cooling system is studied in this paper for energy efficient air conditioning with independent temperature and humidity controls. The system mainly consists of a dehumidifier, a regenerator, an evaporative cooler and an air-to-air heat exchanger. Its feasibility in the hot and humid region is assessed with calcium chloride solution, and the influences of operating variables on the dehumidifier, regenerator, evaporative cooler and overall system performances are investigated through experimental work. The experimental results indicate that the inlet air condition greatly affects the dehumidification and regeneration performances. The system regeneration temperature should be controlled appropriately for a high energy efficiency based on the operative solution concentration ratio. It is worth noting that the solution concentration ratio plays a considerable role in the system performance. The higher the solution concentration ratio, the better the dehumidification performance. However simultaneously more thermal input power is required for the solution regeneration, and a crystallization risk in the normal operating temperature range should be noted as well. The system mass balance between the dehumidifier and regenerator is crucial for the system steady operation. Under the investigated steady operating condition, the supply air temperature of 20.4°C and system COP of 0.70 are achieved at a solution concentration ratio of 36%.

show abstract

Experimental investigation of two-stage indirect/direct evaporative cooling system in various climatic conditions

Cited by 198 publications

References 9 publications

Theoretical Analysis of Combined Compact Evaporative Cooler

Theoretical Analysis of Combined Compact Evaporative Cooler

Evaluation of Evaporative Cooling Systems in Industrial Buildings

Performance assessment of a membrane liquid desiccant dehumidification cooling system based on experimental investigations

Contact Info

Product

Resources

About