Thermal regulation enhancement in multi-story office buildings: Integrating phase change materials into inter-floor void formers

Case Studies in Thermal Engineering, Journal Year: 2024, Volume and Issue: 60, P. 104792 - 104792

Published: July 7, 2024

Addressing the thermal loss from building envelopes is a crucial challenge and requires exploration of various mitigation strategies. This study employs comprehensive 3D computational fluid dynamics simulations to investigate incorporation bio-based Phase Change Materials (PCMs) including CrodaTherm (CT) 19, CT21, CT24W, within inter-floor void formers between roof-floor boundary in multi-story office buildings optimize energy management during inactive periods one adjacent units. Aside PCM type, former shape, its placement, combinations PCMs insulating layers are examined through heat flux solid fraction plots as well liquid contours. Results highlight exceptional performance CT24W-integrated formers, achieving remarkable 36.74 % reduction 48-h average comparison with case without offering lower values than scenario for 89.38 h (endurance time). Based on findings, identical volumes, semi-ellipsoid PCM-integrated provides 11.07 27.56 longer endurance time compared spherical shape. The results underscore integration superior strategy over standalone insulation managing apartment floors.

Language: Английский

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A New Tailored Approach to Calculate the Optimal Number of Outdoor Air Changes in School Building HVAC Systems in the Post-COVID-19 Era

Energies, Journal Year: 2024, Volume and Issue: 17(11), P. 2769 - 2769

Published: June 5, 2024

Air conditioning systems can play a positive or negative role in the spread of COVID-19 infection. The importance sufficient outdoor air changes buildings was highlighted by World Health Organization, therefore these should be guaranteed mechanical ventilation adequate systems. proposed case study concerns optimal number to limit contagion for school building Central Italy. Wells–Riley model is used assess risk airborne infection, while energy consumption calculated dynamic simulation software. scope paper offers an innovative method define strategy building’s HVAC system design reduce infection with limited increases and greenhouse gas emissions. Results show that desirable approach one which same low value set all rooms. This new results significant savings, compared most common ones (setting high rates rooms) counteract Finally, zero-emission target verified introducing suitable photovoltaic offset pollutant

Language: Английский

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An experimental study on the threshold of indoor solar radiation intensity for thermal comfort and work performance in warm season

Building and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 112703 - 112703

Published: Feb. 1, 2025

Language: Английский

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Impact of natural ventilation and outdoor environment on indoor air quality and occupant health in low-income tropical housing

Energy Reports, Journal Year: 2024, Volume and Issue: 12, P. 4184 - 4194

Published: Oct. 10, 2024

Language: Английский

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Data-driven Pre-training Framework for Reinforcement Learning of Air-Source Heat Pump (ASHP) Systems Based on Historical Data in Office Buildings: Field Validation

Energy and Buildings, Journal Year: 2025, Volume and Issue: unknown, P. 115436 - 115436

Published: Feb. 1, 2025

Language: Английский

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HVAC System Energy Retrofit for a University Lecture Room Considering Private and Public Interests

Energies, Journal Year: 2025, Volume and Issue: 18(6), P. 1526 - 1526

Published: March 19, 2025

The operation of Heating Ventilation and Air Conditioning (HVAC) systems in densely occupied spaces results considerable energy consumption. In the post-pandemic context, stricter indoor air quality standards higher ventilation rates further increase demand. this paper, retrofit a partial recirculation all-air HVAC system serving university lecture room located Southern Italy is analyzed. Multi-Objective Optimization (MOO) Multi-Criteria Decision-Making (MCDM) approaches are used to find optimal design alternatives rank these considering two different decision-makers, i.e., public private stakeholders. Among Pareto solutions obtained from optimization, alternative identified, encompassing three Key Performance Indicators using new robust MCDM approach based on four methods, TOPSIS, VIKOR, WASPAS, MULTIMOORA. show that, era, baseline scenarios for infection reduction that do not involve introduction demand control strategies cause consumption negligible values up 59%. On contrary, involving decrease between 5% 38%. findings offer valuable guidance retrofits education similar buildings, emphasizing potential balance occupant health, efficiency, cost reduction. also highlight significant CO2 reductions minimal impacts thermal comfort, showcasing substantial savings through targeted retrofits.

Language: Английский

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Dynamic optimization of cooling temperature setpoints in multiple thermal zones of office buildings in connection with D3QN

Energy and Buildings, Journal Year: 2025, Volume and Issue: unknown, P. 115851 - 115851

Published: May 1, 2025

Language: Английский

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Prediction of electricity consumption using an innovative deep energy predictor model for enhanced accuracy and efficiency

Energy Reports, Journal Year: 2024, Volume and Issue: 12, P. 5320 - 5337

Published: Nov. 14, 2024

Language: Английский

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Testing the use of daylight-linked control systems to address integrative lighting and energy savings in office buildings

Energy and Buildings, Journal Year: 2024, Volume and Issue: 324, P. 114880 - 114880

Published: Oct. 5, 2024

Language: Английский

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Kinetics Model with Experimental Validation for Optimal Microalgae Generation in Double-Skin Façades

Energy, Journal Year: 2024, Volume and Issue: unknown, P. 133335 - 133335

Published: Oct. 1, 2024

Language: Английский

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