Performance of a solar assisted air conditioning system at different locations

Wrobel, Jan; Walter, Pablo Sanabria; Schmitz, Gerhard

doi:10.1016/j.solener.2013.02.030

Cited by 41 publications

(18 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solar collector area (m 2 ) B [1][2][3][4][5][6][7][8] Temperature equation coefficients for the desiccant wheel C [1][2][3][4][5][6][7][8] Humidity Regeneration inlet air humidity ratio (kg/kg) RWO Regeneration outlet air humidity ratio (kg/kg) RTI Regeneration inlet air dry-bulb temperature ( • C) RTO Regeneration outlet air dry-bulb temperature ( • C) SF Solar fraction t [1][2][3][4][5][6][7][8][9] Dry bulb temperature of the air at each point in Figure 1 ( • C) w [1][2][3][4][5][6][7][8][9] Humidity ratio of the air at each point in Figure 1 ∆OC Operating cost differences between the referenced conventional VAV system and the proposed solar system alternatives ($)…”

Section: A Cmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Different Solar-Assisted Air Conditioning Systems for Australian Office Buildings

Saha

Miller

et al. 2017

Energies

View full text Add to dashboard Cite

Abstract:This study has investigated the feasibility of three different solar-assisted air conditioning systems for typical medium-sized office buildings in all eight Australian capital cities using the whole building energy simulation software EnergyPlus. The studied solar cooling systems include: solar desiccant-evaporative cooling (SDEC) system, hybrid solar desiccant-compression cooling (SDCC) system, and solar absorption cooling (SAC) system. A referenced conventional vapor compression variable-air-volume (VAV) system has also been investigated for comparison purpose. The technical, environmental, and economic performances of each solar cooling system have been evaluated in terms of solar fraction (SF), system coefficient of performance (COP), annual HVAC (heating, ventilation, and air conditioning) electricity consumption, annual CO 2 emissions reduction, payback period (PBP), and net present value (NPV). The results demonstrate that the SDEC system consumes the least energy in Brisbane and Darwin, achieving 56.9% and 82.1% annual energy savings, respectively, compared to the conventional VAV system, while for the other six cities, the SAC system is the most energy efficient. However, from both energy and economic aspects, the SDEC system is more feasible in Adelaide, Brisbane, Darwin, Melbourne, Perth, and Sydney because of high annual SF and COP, low yearly energy consumption, short PBP and positive NPV, while for Canberra and Hobart, although the SAC system achieves considerable energy savings, it is not economically beneficial due to high initial cost. Therefore, the SDEC system is the most economically beneficial for most of Australian cities, especially in hot and humid climates. The SAC system is also energy efficient, but is not as economic as the SDEC system. However, for Canberra and Hobart, reducing initial cost is the key point to achieve economic feasibility of solar cooling applications.

show abstract

Section: A Cmentioning

confidence: 99%

“…Research has shown that the building sector is responsible for 32% of the world's total primary energy consumption [1] and nearly 34% of direct greenhouse gas (GHG) emissions globally [2]. In Europe, 39% of the total primary energy is consumed by buildings, among which 26% is for residential houses and 13% for commercial architectures [3].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Different Solar-Assisted Air Conditioning Systems for Australian Office Buildings

Saha

Miller

et al. 2017

Energies

View full text Add to dashboard Cite

show abstract

“…Thermistorstrings are utilized for temperature measurements. The respective temperatures are measured directly within the borehole right next to the double U-tube heat exchangers at 1,5,10,15,20,40,60, and 80 m below the surface.…”

Section: The Geothermal Heat Sinkmentioning

confidence: 99%

“…[18][19][20][21][22][23]). While most of the systems rely on vapour compression chillers, further heat sinks are enabled through the possible increase of the required cold water temperature.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of a ground-coupled desiccant assisted air conditioning system

Speerforck

Schmitz

2016

Applied Energy

Self Cite

View full text Add to dashboard Cite

h i g h l i g h t sA ground-coupled desiccant assisted air conditioning system is evaluated experimentally. The evaluation is carried out for steady state operation and the cooling period as a whole. The suitability of the system to provide comfort conditions is examined demonstrated. Energy comparisons with other air-conditioning systems are performed. The performance of the borehole heat exchangers for cooling is evaluated. a b s t r a c tIn a pilot installation at Hamburg University of Technology the coupled operation of an open cycle desiccant assisted air conditioning system with borehole heat exchangers is investigated. The paper presents experimental data recorded during the cooling period 2014. Results show that the electricity demand of the system can be reduced to the parasitic consumption of the fans, wheels and pumps. An electric energy efficiency ratio of 6.63 is achieved, enabling electricity savings of more than 70% compared to a conventional reference system and 54% compared to a desiccant assisted hybrid system relying on an electric chiller. Comfort conditions can be maintained during the whole cooling period. The borehole heat exchangers work highly efficient, exhibiting a seasonal performance factor of 192.

show abstract

“…Krause et al [4] reported the optimization procedure to improve performance of large solar thermal system. Andersen et al [5], Robles et al [6] and Wrobel et al [7] reported the effect of weather and location on thermal performance of solar thermal collector systems. Authors [8 − 11] studied highly efficient flat-plate evacuated solar thermal collector systems.…”

Section: Introductionmentioning

confidence: 99%

Thermal Performance and Cost to Produce 90°C-Hot Water of Solar Thermal Collector and Hybrid Photovoltaic Thermal (PVT) Collector Systems

Hirasawa¹

2016

IJEPE

View full text Add to dashboard Cite

Abstract:The effects of types of collector systems, operation-control methods, and locations in the world on thermal performance of solar thermal collector systems and cost to produce required amount of 90°C-hot water were studied through numerical simulations. Also performance of a hybrid photovoltaic thermal (PVT) collector system was examined. Calculation results showed that the costs for all solar thermal collector systems were much less than that without solar thermal collector system. Effect of the locations in the word on the cost was large. Total energy efficiency and exergy efficiency of PVT system were lower than those of the solar thermal collector system. The cost for PVT system was higher than that for the solar thermal collector system.

show abstract

Performance of a solar assisted air conditioning system at different locations

Cited by 41 publications

References 16 publications

Comparison of Different Solar-Assisted Air Conditioning Systems for Australian Office Buildings

Comparison of Different Solar-Assisted Air Conditioning Systems for Australian Office Buildings

Experimental investigation of a ground-coupled desiccant assisted air conditioning system

Thermal Performance and Cost to Produce 90°C-Hot Water of Solar Thermal Collector and Hybrid Photovoltaic Thermal (PVT) Collector Systems

Contact Info

Product

Resources

About