Ventilation control system was developed and installed in an all electric center of providing school lunch. The system is able to control ventilation rate according to the change of indoor absolute humidity affected by uses of cooking appliances. The purpose of this study is to clarify the effects on the indoor thermal environment and electric energy consumption for ventilation and air conditioning by the installation of ventilation control system. From the measurements under the condition of the practical uses in the cooking room, the indoor thermal environment after the installation could be as good as it before installation. The electric energy consumption for ventilation and air conditioning was reduced by the developed ventilation control system.
We analyze the energy consumption in a cafe that is located in the campus of Hiroshima University as an independent unit. As for the energy supply system, electricity is used for the whole facilities, where the amount of energy consumption for cooking occupies 65 % of the total and is about three times more than that for air conditioning. The annual energy consumption in the cafe is measured about 880 GJ in primary energy for the total floor area of 249 m 2. The daily energy consumption can be generally explained by plural parameters such as outdoor air temperature, the number of customers and operating hours of air conditioning by the multiple linear regression analyses.
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