Thermal energy conversion formula: Q=860 kcal/kWh, Heat absorbed by water per minute: Q=CmΔt
(1) Heating 1 ton of cold water from 15°C to 95°C, each ton of water rises by 80°C. Calculation of heat required for various heating equipment:
Q=1000 kg × (95°C-15°C) × 1 kcal/kg°C=80000 kcal
1. Power consumption per ton of water for Yijia water boiler: (Yijia water boiler's electric-to-thermal conversion rate is 98.5%)
A. Power consumption per ton of water for Yijia water boiler: 80000 kcal ÷ (860 kcal/kWh * 98.5%) = 94.4 kWh
B. Heat preservation power consumption of Yijia water boiler: heat preservation 3 times every 2 hours, each time 10-20 seconds, 12-hour heat preservation time is 180-360 seconds, i.e., 3-6 minutes. For a 12 kW water boiler,
the maximum heat preservation power consumption in 12 hours is 1.2 kWh
Power consumption per ton of water for Yijia water boiler = 94.4 kWh + 1.2 kWh = 95.6 kWh
2. Power consumption per ton of water per day for ordinary float-type water boiler: (ordinary water boiler's electric-to-thermal conversion rate is 85%)
A. Power consumption per ton of water for float-type water boiler: 80000 kcal ÷ (860 kcal/kWh * 85%) = 109.4 kWh
B. The heat preservation tube of float-type water boiler is 9 kW. Due to poor or no insulation material, the heating tube needs to be activated more than half of the time in 24 hours. Calculated based on 12 hours of water supply per day,
the daily heat preservation power consumption is 12 kW * 6 hours = 54 kWh.
Power consumption per ton of water for ordinary float-type water boiler = 109.4 kWh + 72 kWh = 181.4 kWh
Summary: The above comparison shows that Yijia water boiler : ordinary water boiler = (94.4/181.4)*100% = 52%
(i.e., Yijia energy-saving and healthy water boiler saves 52% electricity compared to traditional water boilers)
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