Test and Analysis of Summer Energy and Thermal Environment for the Nearly Zero-Energy Building in Severe Cold Area

A nearly zero energy building (NZEB) can achieve significant energy saving by reducing its air-conditioning load greatly. At the same time, an NZEB should also achieve a comfortable thermal environment. In this paper, a parallel-pipe type natural heat transfer air-conditioning terminal device is proposed and studied for use in NZEB. The terminal device is able to provide both heating and cooling (including sensible and latent cooling) for a building without noise or air disturbance. The advantages of the terminal device have been demonstrated by comparing with other air-conditioning terminals. Experimental data of the heating and cooling performance of the device under different operation conditions were collected and analysed. The calculation models for the heating and cooling capacities of the device were obtained through data regression analysis, and the flow resistance curve of the device was obtained by means of experimental measurement under various flow rates. In addition, comparison was made on the heating and cooling capacities between the device and a radiant floor that also features little noise or air disturbance. Results show that the heating and cooling capacities of the device were 41.5% and 46.8% higher than the maximum capacities of the radiant floor, respectively. This research laid a foundation for the engineering application of the air-conditioning terminal device.

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Analysis of indoor environment and performance of net-zero energy building with vacuum glazed windows

International Journal of Solar Thermal Vacuum Engineering ◽

10.37934/stve.3.1.114 ◽

2021 ◽

Vol 3 (1) ◽

pp. 1-14

Author(s):

Takao Katsura ◽

Haruhiko Ito ◽

Kirina Komuro ◽

Katsunori Nagano ◽

Saim Memon

Keyword(s):

Heat Transfer ◽

Thermal Environment ◽

Primary Energy ◽

Zero Energy ◽

Transfer Coefficients ◽

Zero Energy Building ◽

Net Zero Energy ◽

Net Zero Energy Building ◽

Net Zero ◽

Insulation Performance

The total energy and indoor thermal environment of an office building, which aims at the net-zero energy building, were measured and analysed. The annual total primary energy consumption of ‘Measurement’ was smaller than the value of ‘Calculation’ at design phase and achieved net-zero. The result of analysis of the thermal environment shows that the comfortable thermal environment was maintained. Also, the insulation performance and heat balance of the vacuum glazed windows in winter was evaluated. The overall heat transfer coefficients calculated by using the monitoring data were almost equal to the rated overall heat transfer coefficient and the high insulation performance of vacuum glazed windows was maintained even in the second year’s operation. In addition, the amount of heat gain due to solar radiation on the window surface was much larger than the amount of heat loss due to transmission. The vacuum glazed windows with high thermal insulation performance on the south side can reduce the heating load and contribute to the achievement of net-zero in the buildings.

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The Electrical Supply System for the Experimental «Zero-Energy» Building (300 M2) Based on Renewable and Alternative Energy Sources

Science and innovation ◽

10.15407/scine11.06.024 ◽

2015 ◽

Vol 11 (6) ◽

pp. 24-32

Author(s):

B.I. Basok ◽

◽

T.G. Belyaeva ◽

I.K. Bozhko ◽

A.N. Nedbaylo ◽

...

Keyword(s):

Alternative Energy ◽

Supply System ◽

Energy Sources ◽

Zero Energy ◽

Alternative Energy Sources ◽

Zero Energy Building ◽

Electrical Supply

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Study of effective factors in the design of zero energy buildings in arid climate (case of Isfahan City)

Ukrainian Journal of Ecology ◽

10.15421/2018_205 ◽

2018 ◽

Vol 8 (1) ◽

pp. 211-221

Author(s):

Negar Aminoroayaei ◽

Bahram Shahedi

Keyword(s):

Fossil Fuels ◽

Arid Climate ◽

Zero Energy ◽

Factors Affecting ◽

Zero Energy Building ◽

Cost Of Energy ◽

Current Century ◽

Increase Productivity ◽

Save Energy ◽

Zero Energy Buildings

In the current century, a suitable strategy is concerned for optimal consumption of energy, due to limited natural resources and fossil fuels for moving towards sustainable development and environmental protection. Given the rising cost of energy, environmental pollution and the end of fossil fuels, zero-energy buildings became a popular option in today's world. The purpose of this study is to investigate the factors affecting the design of zero-energy buildings, in order to reduce energy consumption and increase productivity, including plan form, climatic characteristics, materials, coverage etc. The present study collects the features of zero-energy building in Isfahan, which is based on the Emberger Climate View in the arid climate, by examining the books and related writings, field observations and using a descriptive method, in the form of qualitative studies. The results of the research showed that some actions are needed to save energy and, in general, less consumption of renewable energy by considering the climate and the use of natural conditions.

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