Free cooling potential of a PCM-based heat exchanger coupled with a novel HVAC system for simultaneous heating and cooling of buildings

Maccarini, Alessandro; Hultmark, Göran; Bergsøe, Niels Christian; Afshari, Alireza

doi:10.1016/j.scs.2018.06.016

Cited by 61 publications

(24 citation statements)

References 13 publications

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“…The next system to consider is a HVAC, whose novelty is a single hydronic circuit for the simultaneous heating and cooling of buildings with water temperatures of about 22 °C all year round [ 48 ]. The authors analyzed four different configurations, taking a district heating/cooling network as a baseline, while the rest of the configuration was a reversible air-to-water HP coupled with free cooling devices.…”

Section: Review Of Thermal Storages With Pcm In Building’s Hydronimentioning

confidence: 99%

Phase-Change Materials in Hydronic Heating and Cooling Systems: A Literature Review

et al. 2020

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When considering the deployment of renewable energy sources in systems, the challenge of their utilization comes from their time instability when a mismatch between production and demand occurs. With the integration of thermal storages into systems that utilize renewable energy sources, such mismatch can be evened out. The use of phase-change materials (PCMs) as thermal storage has a theoretical advantage over the sensible one because of their high latent heat that is released or accumulated during the phase-change process. Therefore, the present paper is a review of latent thermal storages in hydronic systems for heating, cooling and domestic hot water in buildings. The work aims to offer an overview on applications of latent thermal storages coupled with heat pumps and solar collectors. The review shows that phase-change materials improve the release of heat from thermal storage and can supply heat or cold at a desired temperature level for longer time periods. The PCM review ends with the results from one of the Horizon2020 research projects, where indirect electrical storage in the form of thermal storage is considered. The review is a technological outline of the current state-of-the-art technology that could serve as a knowledge base for the practical implementation of latent thermal storages. The paper ends with an overview of energy storage maturity and the objectives from different roadmaps of European bodies.

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Section: Review Of Thermal Storages With Pcm In Building’s Hydronimentioning

confidence: 99%

Phase-Change Materials in Hydronic Heating and Cooling Systems: A Literature Review

et al. 2020

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“…Outdoor air is a sustainable energy source for free cooling of buildings. According to Maccarini et al [44], Copenhagen weather condition facilitate the use of free cooling. More specifically for about 93% of the time in a year the temperature is below 18 °C.…”

Section: Outdoor Air For Coolingmentioning

confidence: 99%

“…More specifically for about 93% of the time in a year the temperature is below 18 °C. The ambient temperature is for the greatest part of the year below the , 0 (201 Web of Conferences https://doi.org/10.1051/e3sconf/2019111010 9) 201 E3S 111 10 CLIMA 9 26 26 range 15-20°C [44] . In this respect, a PCM with a melting temperature 15-20°C will enable the free cooling process for Copenhagen climate.…”

Section: Outdoor Air For Coolingmentioning

confidence: 99%

“…The system that is going to be developed will use fewer resources in terms of materials and use significantly less cooling energy compared to a traditional chilled beam system. Calculations performed by Maccarini et al [44] have shown that an integration of a thermal energy storage with PCM in this system can allow an energy reduction by 67% compared to the initial system. PCMs with a phase change temperature between 15 and 20°C will be preferred since this range is feasible for both charging and discharging phase.…”

Section: Novel Lhtes With Pcm Incorporated Into 2 Pipes Chilled Beam mentioning

confidence: 99%

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A PCM based cooling system for office buildings: a state of the art review

et al. 2019

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Cooling of air in buildings has a significant effect on thermal comfort and, consequently, productivity of office occupants. This study presents a state of the art review of energy efficient cooling systems that will provide occupants in buildings with satisfying thermal comfort. Using high-temperature cooling systems combined with renewable energy sources increases the energy efficiency in buildings. Latent heat thermal energy storage (LHTES) using Phase Change Materials (PCM) is a renewable energy source implemented in space cooling applications due to its high energy storage density. Since the share of commercial buildings in need of cooling is increasing, there is a need for developing new technical solutions in order to reduce the energy use without compromising thermal comfort. To this end, a proposed ventilation system, preliminarily analyzed in this paper, is expected to reduce further the energy use. The ventilation system is composed of an air handling unit, a 2-pipe active chilled beam system, and a cooling system including a LHTES using PCM. Few researchers have investigated chilled water air-conditioning systems that integrate a LHTES using PCM. In this review, function characteristics, possibilities and limitations of existing systems are discussed.

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“…Binalara uygun FDM parametreleri her iklim tipinde farklılık göstermiştir. Kış aylarında ısıtma yükünü düşürmek için de çalışmalar yapılmıştır [26][27][28][29]. Bu çalışmalarda, yine soğutma yükünü düşürmeyi amaçlayan çalışmalardaki parametreler iklime ve bina karakteristiğine uygun olarak belirlenmiştir.…”

Section: Introductionunclassified

The Effect of Floating Floor and Phase Changing Materials on Energy Efficiency and Comfort Conditions in Individual Heating

2020

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Günümüzde ülkelerin gelişmişlik düzeylerine ilişkin tüm sınıflandırmalarda enerji önemli bir yer tutmaktadır. Ülkelerin geleceğe yönelik yaptığı bütün planlamalarda enerji kullanım oranı etkin bir parametre olarak göz önüne alınmaktadır. Buna bağlı olarak enerji kullanımının düşürülmesi amacıyla yapılan bilimsel çalışmalar önem kazanmaktadır. Bu çalışmada, ara kat döşemelerinde yalıtım ve faz değiştiren malzeme (FDM) kullanılmasının enerji verimliliği ve konfor koşulları üzerindeki etkileri incelenmiştir. Bodrum, zemin ve iki normal kattan oluşan örnek bir binada eş zamanlı olarak ısıtılan ve ısıtılmayan ortamlardan oluşan farklı senaryolar üzerinde çalışma yapılmıştır. Bu senaryolarda yalıtımsız, yalıtımlı ve yalıtıma ek FDM içeren bir katmanın olduğu üç farklı döşeme tipi kullanılarak, bu parametrelerin ortamların ısı yüklerine, ortam sıcaklığına ve enerji kullanımına etkileri incelenmiştir. Çalışmada elde edilmiş olan bulgulara göre; döşeme ve tavanda yalıtım ve FDM kullanılması ile ortamların ısı yükü düşmektedir. Aynı zamanda ortam sıcaklıklarının ayar sıcaklığına daha yakın olması ile birlikte ısıl konfor koşullarının iyileşmekte olduğu belirlenmiştir. Çalışma sonuçları göstermektedir ki; döşeme ve tavanlarda yalıtım ve FDM kullanımı, yıllık enerji kullanımını aşağıya çekmekte ve enerji verimliliğinde önemli bir artış sağlamaktadır.

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Free cooling potential of a PCM-based heat exchanger coupled with a novel HVAC system for simultaneous heating and cooling of buildings

Cited by 61 publications

References 13 publications

Phase-Change Materials in Hydronic Heating and Cooling Systems: A Literature Review

Phase-Change Materials in Hydronic Heating and Cooling Systems: A Literature Review

A PCM based cooling system for office buildings: a state of the art review

The Effect of Floating Floor and Phase Changing Materials on Energy Efficiency and Comfort Conditions in Individual Heating

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