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The International                        UPDATED 24th February 2010
Journal of Ventilation
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March 2010 Edition of the IJV now Published

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IAQVEC 2010 The 7th International Conference on Indoor Air Quality and Energy Conservation in Buildings

August 15 - 18 2010  Syracuse, New York, USA

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IJV Volume 8 No 3 December 2009 Abstracts

Paper 8

Verification of the Effect of Cross-Ventilation on Energy Conservation by Simulating Occupant Behaviour

Hiromi Habara1, Shigeki Nishizawa2, Hisashi Miura2, Takao Sawachi3 and Akinori Hosoi4

1Hiroshima Institute of Technology, 2-2-1, Miyake, Saeki-ku, Hiroshima 731-5193, Japan
2Environment and Equipment Standards Division, Building Department, National Institute for Land and Infrastructure Management, Tachihara 1, Tsukuba, Ibaraki 305-0802, Japan
3Department of Environmental Engineering, Building Research Institute, Tachihara 1, Tsukuba, Ibaraki 305-0802, Japan
4Prefectural University of Kumamoto

Abstract

Recently, natural ventilation, which is a traditional cooling method in Japan, has become considered as the key method for cooling energy conservation. The results of experiments are presented to measure the indoor thermal environment and cooling power consumption in an experimental dwelling by simulating occupants' life-style including thermal control with natural ventilation and air conditioning. Based on the experimental results the cooling power consumption from July to September has been estimated. The results show that natural ventilation is an effective technique for saving cooling energy consumption. They also suggest that temperature parameters (the upper limit of room temperature, without using an air conditioner, and the preset temperature of an air conditioner) are very important to estimate the cooling energy saving effect with or without using natural ventilation.

Key words: cross-ventilation, cooling energy conservation, verification experiment.

Reference

Sawachi T. et al: 2007. "Proposal of the experimental method with lifestyle simulating method aimed at validating energy performance of promising measures: Study on the experimental validation of energy conservation measures for residential buildings Part 1", Journal of Environmental Engineering, AIJ, 621, pp69-76.

Kurabuchi T, Ohba M, Fugo Y and Endo T: (2002) "Local similarity model of cross ventilation - Part 1 modelling and validation." Proceedings of Roomvent 2002, Copenhagen, Denmark.

Murakami S, Kato S, Akabashi S, Mizutani K and Kim YD: (1991). "Wind tunnel test on velocity-pressure field of cross-ventilation with open windows." ASHRAE Transactions, 97, (1), pp525-538.

NatVent: (1998) "Overcoming the technical barriers to low-energy natural ventilation in office type buildings in moderate to cold climates". http://projects.bre.co.uk/natvent

Sato A: (1937) "On ventilation path between two openings located at the same side to wind direction",AIJ Transactions, 5, pp241-250. (In Japanese).

True JJ, Sandberg M, Heiselberg P and Nielsen P: (2003) "Wind Driven Cross-Flow Analyzed as a Catchment Problem and as a Pressure Driven Flow." The International Journal of Ventilation, 1, Special Edition - HybVent, pp89-101.

Vickery BJ and Karakatstanis C: (1987). "External wind pressure distributions and induced internal ventilation flow in low-rise industrial and domestic structures." ASHRAE Transactions, 93, (2), pp2198-2213.

Vickery BJ and Karakatstanis C; (1989). "Discharge coefficients and internal pressures in well ventilated buildings." Proc. 2nd Asia-Pacific Symposium on Wind Engineering, pp557-567.

Yoshino H: (1990) "Foreword to the symposium." The 1st symposium on air environment - Modelling of calculation method of cross-ventilation rate, Research committee on air environment, AIJ, 1. (In Japanese).

Yoshino H: (2002) "Recent trend of natural ventilation research." SHASE Journal (The Society of Heating, Air-Conditioning and Sanitary Engineers of Japan), 75, (7), pp11-19. (In Japanese).

 

Contents

Editorial The Third International Workshop on Natural Ventilation, Tokyo, Japan 16th March 2009

Paper 1
The Applicability of Natural Ventilation 
- Technical Editorial

Paper 2
Estimation of Cooling Energy Reduction by Utilizing Cross-Ventilation in Detached Houses, within the Japanese newly introduced Energy Regulation - Evaluating Energy Consumption for Different Uses

Paper 3 
Domain Decomposition Technique Applied to the Evaluation of Cross-Ventilation Performance of Opening Positions of a Building

Paper 4 
Buoyancy Driven Natural Ventilation through Horizontal Openings

Paper 5 
Review of Cross-Ventilation Research Papers - from the Working Group for Natural Ventilation and Cross-Ventilation of the Architectural Institute of Japan

Paper 6  
The Theory of Thermal Comfort in Naturally Ventilated Indoor Environments - “The Pleasure Principle”
 

Paper 7
 A Simulation Study on the Reduction of Cooling Loads in a Detached House by Cross-Ventilation using the Local Dynamic Similarity Model

Paper 8
 Verification of the Effect of Cross-Ventilation on Energy Conservation by Simulating Occupant Behaviour

Paper 9 
The Impact of Several Construction Elements on the Thermal Performance of Solar Chimneys

Paper 10 
Natural Ventilation with Dynamic Façades

 

    

                                              

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