Performance, economic and environmental assessment of solar cooling systems under various climates

Mortadi, M.; Fadar, A. El

doi:10.1016/j.enconman.2021.114993

Cited by 30 publications

(5 citation statements)

References 63 publications

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“…In terms of energy consumption, the consumption of the fans used for desiccant façade system are significant, but, in conventional system, the heat pump consumption increases when the supply air temperature decreases. Mortadi and Fadar (Mortadi and El Fadar 2022b) proposed the investigation of different solar cooling systems: solar absorption, solar adsorption, photovoltaic and photovoltaic thermal (PVT) cooling systems on the basis of performance, economic and environmental aspects. The main objective is to identify the most favorable system depending on climate condition and Solar Fraction (SF).…”

Section: Assessment Of Loads Demands and Savings Potentialmentioning

confidence: 99%

Building and process optimization potential

Bonomolo,

Strobel

2023

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This document is the final report on activity A4 “Building and process optimization” of the IEA SHC Task 65 “Solar Cooling for the Sunbelt regions”. It presents an overview on the relevance of building and process optimization..Several ongoing and completed projects are introduced and results are depicted. In particular, information about completed and running research projects are presented in order to quantify the amount of energy used for cooling systems. Furthermore, main projects related to the IEA EBC (Buildings and Communities Programme) about cooling systems are reported.

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Section: Assessment Of Loads Demands and Savings Potentialmentioning

confidence: 99%

Building and process optimization potential

Bonomolo,

Strobel

2023

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“…Mortadi and Fadar [56] proposed the study of various solar cooling systems, including photovoltaic thermal (PVT), solar adsorption, and solar absorption, with a focus on their economic viability, environmental impact, and performance in seven climate conditions. The primary goal of their investigation is to find the most adequate system based on specific climate conditions and Solar Fraction (SF) considerations.…”

Section: Energy and Technical Aspectsmentioning

confidence: 99%

Integration of Solar Cooling Systems in Buildings in Sunbelt Region: An Overview

Bonomolo,

Jakob,

Neyer

et al. 2023

Buildings

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This paper presents the results of the activities related to the subtask “Building and process optimization” of the IEA SHC Task 65. The main topic of this activity was the integration of solar cooling in retrofitted HVAC systems. Based on the current conventional HVAC systems, the integration may present difficulties concerning cold distribution and refrigerants. Cold supply systems can also reduce airflow in air-based systems and enhance thermal comfort in buildings. The best technical actions for specific scenarios were mentioned considering both technical and economic aspects. Unfortunately, not all the analyses that were planned provide useful data. Results show that there are few recent projects that consider the application of solar cooling systems in buildings and most of them are based on simulation. Moreover, not much data about the characteristics of the buildings (envelope, other cooling systems, comfort conditions, etc.) are reported in the studies. This is because many of them are more focused on the plants’ configurations, and the performance of the different plants is in general assessed by testing the prototype in a single room. Despite this, the information provided could be used as baseline cases in order to study the potential energy savings achievable by applying solar cooling systems.

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“…Solar cooling technologies are gaining popularity as an environmentally friendly cooling technique that might be an alternative to traditional vapor compression cooling [2,3]. Solar cooling captures solar energy and utilizes it in a thermally powered cooling process to produce cold water or conditioned air.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Dynamic Simulation of a Phase-Change Material Tank for Powering Chiller Generators in District Cooling Networks

2023

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Latent heat storage in district cooling systems (DCS) offers advantages such as energy efficiency, load shifting, and flexibility. It optimizes energy utilization by storing thermal energy during off-peak hours and using it during peak periods. This results in cost savings, a reduced environmental impact, and the enhanced reliability of the cooling system. In the present study, a novel system consisting of a phase-change material (PCM) tank coupled to a 120 kW chiller generator for cooling is proposed. During peak cooling loads, the proposed PCM tank is intended to supply consistent thermal power at an appropriate temperature. The system is modeled using the lumped-capacitance approach, and the effective thermal capacity approach is used to model the PCM’s phase-transition phenomena. The system’s dynamic performance is evaluated, and the impact of various parameters during the PCM-tank discharging process is analyzed. The computational findings are compared to experimental data taken from a real district network, and there is excellent agreement. Results showed that increasing the needed heat rate for the cooling process from 120 kW to 160 kW decreases the PCM tank’s discharging duration by about 20% and increases pump energy consumption. It was also found that increasing the capacity of the PCM tank is advantageous for the cooling process as it extends the duration of 120 kW constant power production by about 62% when the tank volume is increased from 5 m3 to 10 m3. Finally, it was shown that the choice of the PCM type is crucial for improving the cooling performance. Erythritol is a suitable storage medium in the tank compared to A118 and MgCl2·6H2O, and using erythritol instead of PCM A118 increases the period of continuous thermal power generation by about 67%.

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Performance, economic and environmental assessment of solar cooling systems under various climates

Cited by 30 publications

References 63 publications

Building and process optimization potential

Building and process optimization potential

Integration of Solar Cooling Systems in Buildings in Sunbelt Region: An Overview

Modeling and Dynamic Simulation of a Phase-Change Material Tank for Powering Chiller Generators in District Cooling Networks

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