Influence of building parameters and HVAC systems coupling on building energy performance

Korolija, Ivan; Marjanovic-Halburd, Ljiljana; Yi, Zhang; Hanby, V. I.

doi:10.1016/j.enbuild.2011.01.003

Cited by 60 publications

(27 citation statements)

References 10 publications

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“…This has also been observed by Korolija et al [45]. It is believed that this trend is mainly because of the higher air flow rate in CAV systems which results in higher heat dissipation to the supply air from fan units [45]. In addition, this study reveals that VAV systems are able to track the desired indoor temperature better than CAV systems.…”

Section: Discussionsupporting

confidence: 80%

“…In addition, systems connected to the VAV air distribution system use slightly higher energy to meet the required heating and cooling demands compared with CAV air distribution. This has also been observed by Korolija et al [45]. It is believed that this trend is mainly because of the higher air flow rate in CAV systems which results in higher heat dissipation to the supply air from fan units [45].…”

Section: Discussionsupporting

confidence: 61%

“…Therefore, the energy consumption and CO2 emissions analyses would be more indicative for the characterisation of the variety of HVAC&R systems. In order to present the results in a format similar to the breakdown of energy used in the UK building energy benchmarks [16,18], the energy consumption of HVAC&R systems are classified into five main groups: To validate the results, ECG-19 [18] has been used because it is a widely cited reference in the most of the building energy benchmarking studies in the UK [16,17,45]. In this benchmark, energy consumption and CO2 emissions of a standard air conditioned building are described as two levels "good practice" and "typical".…”

Section: Resultsmentioning

confidence: 99%

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Characterising the energy performance of centralised HVAC&R systems in the UK

Shahrestani

Yao

Cook

2013

Energy and Buildings

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Heating, ventilation, air conditioning and refrigeration (HVAC&R) systems account for more than 60% of the energy consumption of buildings in the UK. However, the effect of the variety of HVAC&R systems on building energy performance has not yet been taken into account within the existing building energy benchmarks. In addition, the existing building energy benchmarks are not able to assist decision-makers with HVAC&R system selection. This study attempts to overcome these two deficiencies through the performance characterisation of 36 HVAC&R systems based on the simultaneous dynamic simulation of a building and a variety of HVAC&R systems using TRNSYS software. To characterise the performance of HVAC&R systems, four criteria are considered; energy consumption, CO2 emissions, thermal comfort and indoor air quality. The results of the simulations show that, all the studied systems are able to provide an acceptable level of indoor air quality and thermal comfort. However, the energy consumption and amount of CO2 emissions vary. One of the significant outcomes of this study reveals that combined heating, cooling and power systems (CCHP) have the highest energy consumption with the lowest energy related CO2 emissions among the studied HVAC&R systems.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionsupporting

confidence: 61%

Section: Resultsmentioning

confidence: 99%

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Characterising the energy performance of centralised HVAC&R systems in the UK

Shahrestani

Yao

Cook

2013

Energy and Buildings

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“…Usually vapour compression air-conditioning systems are used for both ventilation and the dehumidification of the air resulting to high electricity consumption. It has been concluded that air-conditioning is the dominant building service equipment in tropical climate consuming up to about 50% of the total electricity end-use , (Korolija et al, 2011;Hughes et al, 2011;Chua et al,2013 andVakiloroaya et. al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

A study on the effect of ground surface boundary conditions in modelling shallow ground heat exchangers

Bortoloni¹,

Bottarelli²,

2017

Applied Thermal Engineering

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“…Data from the literature [1] shows that 39% of the United States' primary energy is consumed by buildings, with space heating and cooling being responsible for 54% of the site energy consumption in the residential sector, and 37% in the commercial sector during 2017. In Europe, air conditioning equipment systems are also the main energy consumer in buildings, consisting of 70% of the final energy use [2,3]. Considering these data, the importance of reducing the energy used in all types of building in order to improve their efficiency and sustainability is clear.…”

Section: Introductionmentioning

confidence: 99%

Energy Management in Buildings with Intermittent and Limited Renewable Resources

Barata

Igreja

2018

Energies

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This work reports a contribution, in a model predictive control multi-agent systems context, introducing a novel integrative methodology to manage energy networks from the demand-side point of view, in the strong presence of intermittent energy sources, including energy storage in households or car batteries. In particular, the article presents a control-based solution for indoor comfort, which, in addition, optimizes the usage of a limited shared energy resource. The control management is applied, in a distributed way, to a set of so-called thermal control areas (TCAs) and demand units, with the objective of minimizing the cost of energy while maintaining the indoor temperature within the comfort zone bounds, and simultaneously not exceeding a limited amount of shared renewable energy. The thermal control areas are, in general, thermodynamically connected, and are also coupled by energy interrelation constraints established in the particular optimization solution. Energy management is performed with a fixed sequential order established from a previously carried out auction, wherein the bids are made by each unit’s demands, acting as demand-side management agents, based on the daily energy price. The developed solution is explained by a basic algorithm that has been applied to different scenarios, and the results have been compared so as to illustrate the benefits and flexibility of the proposed approach, showing less energy consumption and a 37% cost saving.

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Influence of building parameters and HVAC systems coupling on building energy performance

Cited by 60 publications

References 10 publications

Characterising the energy performance of centralised HVAC&R systems in the UK

Characterising the energy performance of centralised HVAC&R systems in the UK

A study on the effect of ground surface boundary conditions in modelling shallow ground heat exchangers

Energy Management in Buildings with Intermittent and Limited Renewable Resources

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