Energy performance and cost analysis for the nZEB retrofit of a typical UK hotel

Salem, Radwa; Bahadori-Jahromi, Ali; Mylona, Anastasia; Godfrey, Paulina; Cook, Darren

doi:10.1016/j.jobe.2020.101403

Cited by 24 publications

(16 citation statements)

References 39 publications

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“…3) are classified as economy, while the other 12 hotels (Hotel Nos. [4][5][6][7][8][9][10][11][12][13][14][15] are classified as luxury [48]. It can be observed from Figure 2 that the incremental cost per floor area of energysaving retrofit technology of luxury hotels is at least 70.4 yuan/m 2 , the maximum is 127.4 yuan/m 2 , and the average value is 97.6 yuan/m 2 ; the minimum incremental cost per floor area of energy-saving retrofit technology for economy hotels is 162.7 yuan/m 2 , the maximum is 233.4 yuan/m 2 , and the average value is 194.5 yuan/m 2 .…”

Section: Post-evaluation Of Technology Applicationmentioning

confidence: 99%

“…Salem et al used building life-cycle cost (BLCC) software to carry out the global cost calculations. The identified cost-optimal PEC level and recommendations provided may be used in the appraisal of other purpose-built UK nZEB hotel retrofits [14]. Sharif and Hammad aimed to find the optimal scenario for the renovation of institutional buildings considering energy consumption and LCA.…”

Section: Introductionmentioning

confidence: 99%

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Economic Evaluation of Energy-Saving Retrofit of Existing Hotels

Wang

Dong

2022

Energies

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With the improvement of China’s economic strength, the energy consumption of public buildings is continually increasing, notably for hotels. The energy consumptin of a hotel accounts for more than 15% of its revenue, and the average energy consumption per floor area is more than 10 times that of urban residents. Therefore, the energy-saving retrofit of existing hotels is imperative. This study investigates the economic evaluation methods for existing hotel retrofit projects, and constructs an economic evaluation model using economic evaluation and cost-effectiveness ratio as the base. The energy-saving retrofit measures of 15 existing hotels in Jiangsu Province, China, are used as a case study to demonstrate the research framework. The results indicate that the heating, ventilation and air conditioning (HVAC) system, monitoring system, lighting system, domestic hot water system, and building envelope system are the five energy-saving retrofit technical measures with the highest application ratio. The average dynamic investment payback period of hotels in Jiangsu Province is 2.96 years, which meets the requirement of no more than 10 years specified in the energy-saving building standard. The cost-effectiveness ratio of different technologies differs significantly. Lighting and kitchen systems have the highest energy-saving efficiency, followed by monitoring systems, while HVAC and domestic hot water systems have the lowest. The research presented in this paper contributes to the economic evaluation of the energy-saving retrofit of hotels.

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Section: Post-evaluation Of Technology Applicationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Economic Evaluation of Energy-Saving Retrofit of Existing Hotels

Wang

Dong

2022

Energies

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“…Many scholars have conducted extensive researche on optimization, including the optimal design of net-zero energy buildings and the optimal control of the operation process. For example, for the optimal design of net-zero energy buildings [7,8], Lu et al [9] considered the effect of uncertainty parameters in nZEB designing and proposed a robust design method for sizing renewable energy systems in nZEB. Ferrara et al [10] proposed a method based on deep residual learning, aimed at simplifying the nZEB optimization design, and the results showed that the use of this simulation method can effectively improve energy efficiency with low accuracy error.…”

Section: Introductionmentioning

confidence: 99%

Optimal Control of Energy Systems in Net-Zero Energy Buildings Considering Dynamic Costs: A Case Study of Zero Carbon Building in Hong Kong

Zhou

et al. 2022

Sustainability

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Net-zero energy buildings coupled with multiple energy demands on the load side, which utilize renewable energy to a larger extent, are an effective way to consume distributed capacity in situ and need to face the operational challenges brought by the uncertainty of renewable energy while meeting different energy demands. To this end, this paper proposes a Dynamic Cost Interaction Optimization Model (DCI-OM) with Electric Vehicle Charging Station (EVCS) based on dynamic cost (i.e., oil price, electricity price) and considers a larger proportion of renewable energy capacity to be consumed. In this model, the optimized electricity and cooling demand dispatch scheme is given with daily operating cost as the objective function. Using the Zero Carbon Building in Hong Kong, China, as an example, simulations are performed for typical days (i.e., 21 March, 21 June, 22 September, and 21 December) in four seasons throughout the year. The results show that the electric and cooling load demand response scheme given by DCI-OM achieves peak and valley reduction according to the dynamic cost and reduces the original operating costs while ensuring that the customer’s comfort needs are within acceptable limits. The optimized scheduling scheme meets the demand while reducing the daily operating cost.

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“…Furthermore, Canada aims to reduce 50% of greenhouse gas emissions through building energy savings and green roof applications by the end of 2030 [6]. In order to respond to these policies and regulations related to zero-energy building, many studies have been conducted to estimate the effect of zero energy building constructions to the whole building stock and global climatic conditions [7][8][9]. Salem investigated the impact of zero energy building constructions on the built environment through simulations of zero-energy building standards to existing UK commercial and residential buildings [8].…”

Section: Introductionmentioning

confidence: 99%

“…Salem investigated the impact of zero energy building constructions on the built environment through simulations of zero-energy building standards to existing UK commercial and residential buildings [8]. They also adopted the zero energy building standards in a certain UK hotel and presented the energy performance and economic analysis of the retrofitted hotel [9]. Relevant studies all show promising results for zero energy buildings as a useful tool of climate change mitigation and building energy performance improvement.…”

Section: Introductionmentioning

confidence: 99%

Sino-American Building Energy Standards Comparison and Recommendations towards Zero Energy Building

Zhang

Chen

et al. 2021

Sustainability

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Building energy conservation has gained tremendous interest since the 1970s energy crisis. Building energy standards have been established as prescribed guidelines for energy savings in buildings worldwide, among which those from China and the United States of America (USA) are representative of their advanced concept, comprehensive content and prospective guidance. This paper collected and generalized the main building energy standards in China (GB50189, JGJ26, JGJ134 and JGJ75) and the USA (ASHRAE 90.1), in terms of updating history, current status, energy saving potential and future development directions. Furthermore, a qualitative and quantitative comparison of the selected standards was performed. The results show that China has a more intact and comprehensive building energy standard system, better implementation, higher improvement in energy saving rates, and a more perspicacious upgrade towards zero-energy target, which results in effective energy savings in buildings. The ASHRAE standards have more fixed chapter framework, integrity and independence between versions, more detailed classification of building envelope and HVAC systems but less effective energy-saving effect and relatively poor implementation. The actual efficiency of standards in building energy saving is synthetically determined by the standard content, efficient implementation and explicit guidelines for future development, which is achieved through four main procedures. Based on the results, recommendations have been proposed for the future development of building energy standards with the ultimate goal toward zero energy buildings.

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Energy performance and cost analysis for the nZEB retrofit of a typical UK hotel

Cited by 24 publications

References 39 publications

Economic Evaluation of Energy-Saving Retrofit of Existing Hotels

Economic Evaluation of Energy-Saving Retrofit of Existing Hotels

Optimal Control of Energy Systems in Net-Zero Energy Buildings Considering Dynamic Costs: A Case Study of Zero Carbon Building in Hong Kong

Sino-American Building Energy Standards Comparison and Recommendations towards Zero Energy Building

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