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Review of Room Condition

Energy-saving efficiency is expected when the target temperature in operating air conditioning is set lower than usual setting.

Model conditions

Figure: Usual condition of room temperature and humidity
Cooling Temperature 26°C
Humidity 50%RH
Heating Temperature 22°C
Humidity 50%RH

Figure: Energy-saving condition of room temperature and humidity
Cooling Temperature 28°C
Humidity 50%RH
Heating Temperature 18°C
Humidity 40%RH

Figure: Conditions of air conditioning operation
Item Conditions
Air conditioning period Cooling: 15 May - 15 October
Heating: 1 Nov - 30 March
Condition of room temperature and humidity Cooling: 24,26,28°CDB, 50%RH
Heating: 18,20,22°CDB, 50%RH
Hours of room use Weekday: 9:00 a.m.- 18:00 p.m.
Saturday: 9:00 a.m.- 12:00 p.m.
Sunday and Holidays: No operation
Operation hours Hours of room use + preheating (cooling) + 1 hour
Number of staff in the room 0.25 person /m²
lighting 30 W/ m²
Quantity of outdoor air intake 30 m²/ person hour


Figure: Overview of model building



Figure: Effectiveness after reviewed conditions of room temperature





Case Example: YOKOHAMA CITY UNIVERSITY HOSPITAL


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