Contributions of energy-saving technologies to building energy saving in different climatic regions of China

Huo, Haie; Shao, Junhu; Huo, Haibo

doi:10.1016/j.applthermaleng.2017.06.065

Cited by 42 publications

(16 citation statements)

References 21 publications

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“…SHGC is the fraction of solar radiation admitted through fenestration, as a result of releasing heat inside rooms. Huo et al (2017) indicated that the energy saving rate is nearly 70%-90% when the strategies are applied to the baseline model in China. In heating-dominant regions, heating loads reduce by minimizing U-value of the building envelope.…”

Section: Passive Building Strategiesmentioning

confidence: 99%

Handshaking towards zero-concept analysis and technical measures of LEED zero-energy building in connection with technical standard of nearly zero-energy building in China

Kang

Rui-jie

et al. 2020

Energy Exploration & Exploitation

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To achieve zero-energy building target, both China and the US have planned pathway by formulating guidelines and standards. China has published National China technical standard for nearly zero energy building (CTS-NZEB), which defines detailed principles of zero-energy building. The US LEED zero energy evaluation system has been released based on LEED rating system. Defined target and scope have been introduced in this evaluation system; however, there are no technical and detailed approaches in the rating system. To support future projects achieving the LEED Zero Energy certification in China, accessible applications have been analyzed in perspectives of technology and economy in this article. The comparison and analysis results show that the strategies and technical index of CTS-NZEB can be adopted comprehensively in LEED Zero Energy rating system for Chinese buildings except for renewable energy resources because air source or ground source heat pump system, which are extensively used in China but not acceptable in LEED Zero Energy rating system. High-performance strategies, including low U-value envelope, exterior shading devices, high air tightness envelope, high-efficiency heating, ventilation, and air-conditioning system, and low thermal bridge impact, can be applied to pursue LEED Zero Energy rating system. The incremental costs of NZEBs in China are also supported by government through market and financial policies. This would make significant impacts on Chinese buildings to achieve the LEED Zero Energy target.

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Section: Passive Building Strategiesmentioning

confidence: 99%

Handshaking towards zero-concept analysis and technical measures of LEED zero-energy building in connection with technical standard of nearly zero-energy building in China

Kang

Rui-jie

et al. 2020

Energy Exploration & Exploitation

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“…The polystyrene board has a poor fire resistance, while rock wool is too costly to fabricate. As a result, more prefabricated buildings adopt composite insulation in its walls than exterior insulation [6]. The most intuitive response of the envelope is the temperature fluctuation on the inner surface of the envelope and the indoor temperature fluctuation [7].…”

Section: Introductionmentioning

confidence: 99%

Environmental Thermal Performance of Prefabricated Buildings Based on Building Wall Energy-Saving Technology

Zou¹,

Sun²

2020

IJSDP

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In prefabricated buildings, the building walls act as thermal insulation layers of the building envelope. The walls in the envelope consume 50% of the energy consumed by the whole building. To promote prefabricated buildings, it is very important to design energy-saving exterior walls. Focusing on prefabricated building in Inner Mongolia, this paper designs a novel composite thermal insulation block for building walls based on coal gangue ceramsites and polyethylene insulation boards, and probes deep into its mechanical properties and environmental thermal performance. The results show that, with the growing content of coal gangue ceramsites, the composite thermal insulation block saw a linear decline in volume density, compressive strength, and thermal conductivity; the theoretical heat transfer coefficient of the proposed insulation block deviated slightly from the calculated value, indicating the feasibility of the calculated heat transfer coefficient. The research results promote the application of new building walls in the design of prefabricated buildings.

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“…In China, it is required that space heating and cooling consumes no more than approximately 60% of the total energy used in buildings. 11 To meet the requirements of energy conservation, the materials of the wall are selected from different grades of foam concrete, aerated concrete, rock wool, and other materials.…”

Section: Introductionmentioning

confidence: 99%

Preparation and thermal insulation performance of cast-in-situ phosphogypsum wall

Dai

Zhang

et al. 2018

Journal of Applied Biomaterials & Functional Materials

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Introduction: The mass accumulation of phosphogypsum has caused serious environmental pollution, which has become a worldwide problem. Gypsum is a kind of green building material, which is lighter, has better heat and sound insulation performance, and is easier to recycle compared to cement. The application of cast-in-situ phosphogypsum wall could consume a large amount of pollutant, and improve the efficiency of building construction. Methods: The preparation and thermal insulation performance of cast-in-situ phosphogypsum wall were investigated. The property of phosphogypsum-fly ash-lime (PFL) triad cementing materials, the adaptability of retarders and superplasticizers, and the influences of vitrified microsphere as aggregates were explored. Thus, the optimum mix was proposed. Thermal insulation performance tests and ANSYS simulation of this material was carried out. Results: Optimal structures based on heat channels and the method of calculation determining related parameters were proposed, which achieved a 12.3% reduction in the heat transfer coefficient of the wall. Conclusion: With good performance, phosphogypsum could be used in cast-in-situ walls. This paper provides the theoretical basis for the preparation and energy-saving application of phosphogypsum in the walls of buildings.

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Contributions of energy-saving technologies to building energy saving in different climatic regions of China

Cited by 42 publications

References 21 publications

Handshaking towards zero-concept analysis and technical measures of LEED zero-energy building in connection with technical standard of nearly zero-energy building in China

Handshaking towards zero-concept analysis and technical measures of LEED zero-energy building in connection with technical standard of nearly zero-energy building in China

Environmental Thermal Performance of Prefabricated Buildings Based on Building Wall Energy-Saving Technology

Preparation and thermal insulation performance of cast-in-situ phosphogypsum wall

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