A review on solar-powered cooling and air-conditioning systems for building applications

Al-Yasiri, Qudama; Szabó, Márta; Arıcı, Müslüm

doi:10.1016/j.egyr.2022.01.172

Cited by 64 publications

(11 citation statements)

References 127 publications

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“…The considered commercial water-lithium bromide (H 2 O-LiBr) absorption chiller type has a nominal cooling capacity of 160 kW and an average coefficient of performance (COP) of 1.3 [12]. It is interesting to note this double-effect absorption chiller is chosen due to its high COP compared to the single-effect absorption chiller and its ability to provide high cooling capacities [3,18]. The characteristics of the considered water-lithium bromide double-effect absorption chiller are summarized in Table 1.…”

Section: Charging and Cooling Periodmentioning

confidence: 99%

“…In hot regions, heating, ventilating and air-conditioning (HVAC) systems are known to consume the largest part of electricity [1,2]. In Saudi Arabia, for example, it was reported that as much as 40% of the total electricity is used to cool commercial buildings [3]. The International Energy Agency (IEA) also predicted that by 2050 about two-thirds of the world's buildings will be equipped with air-conditioning systems [4].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Investigation of a Coupled Parabolic Trough Collector–Phase Change Material Tank for Solar Cooling Process in Arid Climates

2023

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The use of solar energy for cooling processes is advantageous for reducing the energy consumption of conventional air-conditioning systems and protecting the environment. In the present work, a solar-powered cooling system with parabolic trough collectors (PTC) and a phase change material (PCM) tank is numerically investigated in the arid climates of Saudi Arabia. The system contains a 160-kW double-effect absorption chiller powered by solar-heated pressurized water as a heat transfer fluid (HTF) and a shell and tube PCM as a thermal battery. The novelty of this paper is to investigate the feasibility and the potential of using a PTC solar field coupled to a PCM tank for cooling purposes in arid climates. The numerical method is adopted in this work, and a dynamic model is developed based on the lumped approach; it is validated using data from the literature. The functioning of the coupled system is investigated in both sunshine hours (charging period) and off-sunshine hours (discharging period). The PTC area in this work varies from 200 m2 to 260 m2 and the cooling capacity of the chiller ranges from 120 kW to 200 kW. Obtained results showed that the 160-kW chiller is fully driven by the 240 m2-solar PTC during the charging period and about 23% of solar thermal energy is stored in the PCM tank. It was demonstrated that increasing the PTC area from 220 m2 to 260 m2 leads to a reduction in the PCM charging time by up to 45%. In addition, it was found that an increase in the cooling loads from 120 kW to 200 kW induces a decrease in the stored thermal energy in the PCM tank from 450 kWh to 45 kWh. During the discharging period, the PCM tank can continue the cooling process with a stable delivered cooling power of 160 kW and an HTF temperature between 118 °C and 150 °C. The PCM tank used in the studied absorption chiller leads to a reduction of up to 30% in cooling energy consumption during off-sunshine hours.

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Section: Charging and Cooling Periodmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Investigation of a Coupled Parabolic Trough Collector–Phase Change Material Tank for Solar Cooling Process in Arid Climates

2023

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“…Cooling, which accounts for over 10% of global electricity consumption and contributes to a seasonal power crisis, has garnered significant attention due to the rising demand for maintaining a comfortable ambient temperature alongside economic development, particularly in summer. − Outdoor sunlight exposure (∼1000 W m –2 , AM1.5) leads to an additional heat load, making it challenging to achieve outdoor cooling. In this context, the exploration of high-efficiency and low-cost personal thermal management strategies has gained prominence. − While air conditioning remains a popular choice for personal cooling, it introduces energy waste, and noise and exhibits low efficiency in open spaces. , Consequently, there is a need to investigate passive cooling strategies that enhance conditional and radiative cooling with potential efficacy in both enclosed spaces and outdoor environments.…”

Section: Introductionmentioning

confidence: 99%

High Thermal Conductivity and Radiative Cooling Designed Boron Nitride Nanosheets/Silk Fibroin Films for Personal Thermal Management

Xia,

Kong,

et al. 2024

ACS Appl. Mater. Interfaces

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The implementation of passive cooling strategies is crucial for transitioning from the current high-power-and energyintensive thermal management practices to more environmentally friendly and carbon-neutral alternatives. Among the various approaches, developing thermal management materials with high thermal conductivity and emissivity for effective cooling of personal and wearable devices in both indoor and outdoor settings poses significant challenges. In this study, we successfully fabricated a cooling patch by combining biodegradable silk fibroin with boron nitride nanosheets. This patch exhibits consistent heat dissipation capabilities under different ambient conditions. Leveraging its excellent radiative cooling efficiency (R solar = 0.89 and ε LWIR = 0.84) and high thermal conductivity (in-plane 27.58 W m −1 K −1 and out-plane 1.77 W m −1 K −1 ), the cooling patch achieves significant simulated skin temperature reductions of approximately 2.5 and 8.2 °C in outdoor and indoor conditions, respectively. Furthermore, the film demonstrates excellent biosafety and can be recycled and reused for at least three months. This innovative BNNS/SF film holds great potential for advancing the field of personal thermal management materials.

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“…However, the displayed studies should work based on certain and limited conditions such as the generator temperature and performance which are required to be improved. Now, the challenge is looking for ways to improve the performance of the single effect absorption chiller and if possible lowering its operating temperature to be valid to conjugate with waste heat sources such as solar energy [9][10][11][12]. In general, the operation temperature of the single effect absorption chiller is rounded between 80 and 100℃ [13,14] while its coefficient of performance is rounded between 0.5 and 0.7 [15].…”

Section: Introductionmentioning

confidence: 99%

Compressor-Aid Absorption Chiller Working on Low Grade Temperature Heat Source: A Thermodynamic Analysis

Naji,

Altayee

2023

IJHT

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Searching for new technology to exploit the wasted heat is continuing. Using absorption chillers is a promising technology. Single-effect LiBr-H2O absorption chillers represent the simplest type. These chillers have low efficiency and use high operation temperatures. In this study, a new modification is suggested to improve the efficiency and lower the generator (inlet) temperature, so the developed machine can use the wasted heat to generate a cooling load. The suggested modification concludes by inserting a small compressor between the generator and the condenser, so that, the pressure will be reduced in the generator which reduces the temperature while increasing the condenser pressure will lead to increase the vapor condensation (increasing the chiller performance). The results of the modified model of the device showed that the operating temperature could be reduced from 100℃ to 90℃ while the performance increased from 0.721 to 0.803. Moreover, the cooling capacity could be increased from 10.575 kW to 15.278 kW. These results promote the possibility to operate the suggested form of absorption chillers with low-grade temperature heat sources such as solar energy or wasted heat from industries.

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A review on solar-powered cooling and air-conditioning systems for building applications

Cited by 64 publications

References 127 publications

Dynamic Investigation of a Coupled Parabolic Trough Collector–Phase Change Material Tank for Solar Cooling Process in Arid Climates

Dynamic Investigation of a Coupled Parabolic Trough Collector–Phase Change Material Tank for Solar Cooling Process in Arid Climates

High Thermal Conductivity and Radiative Cooling Designed Boron Nitride Nanosheets/Silk Fibroin Films for Personal Thermal Management

Compressor-Aid Absorption Chiller Working on Low Grade Temperature Heat Source: A Thermodynamic Analysis

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