Air source heat pump water heater really can save power
When decorating the bathroom, you must have a water heater is an electrical appliance. Many owners know that electric water heaters, gas water heaters and solar water heaters, and air source heat pump water heater is not much understanding.
Heating principle of air source heat pump water heater
Air conditioning refrigeration depends on the Carnot principle, air source heat pump water heater heating is reverse the inverse Carnot principle, the use of refrigerant from the air to absorb heat, which is the second law of thermodynamics: heat can spontaneously from high temperature to low temperature transmission, So the heat pump heat absorption process does not require power consumption. But absorb the heat, you need to use a dedicated heat pump compressor pressure, heating, the compressor needs to start power consumption. Electric energy is only used to drive the compressor operation, so the air source heat pump water heater power consumption is very small.
Air source heat pump water heater is relatively more economical
Here we will be 1 Ton of cold water from 15 ℃ to 55 ℃ to spend the money to spend as a contrast.
The heat calculation formula is: Q = 1000 kg × (55 ℃ -15 ℃) × 1 kcal / kg ℃ = 40000 kcal.
1. Electric water heater:
Electric water heater per kilowatt electricity generated by the maximum heat is Q = 860 kcal / degree × 95% = 817 kcal / degrees; so 1 ton of hot water consumption of 48.96 degrees; to civilian electricity price of 0.558 yuan / kWh to calculate , The cost per ton of hot water is 27.32 yuan.
2. Gas water heater:
Natural gas heat transfer rate of 70%, the maximum heat per cubic meter of natural gas is Q = 8500 kcal / cubic X70% = 5950 kcal / cubic; 1 ton of hot water consumption of 6.72 cubic meters; if the price of civil gas 2.5 yuan / cubic, the cost per ton of hot water is 16.8 yuan.
3. Air source heat pump water heater:
Air heat pump water heater annual average thermal efficiency is 3 times the electric water heater, the electricity generated by each degree of heat is 860 kcal / degree × 95% × 3 = 2451 kcal / degree; 1 ton of hot water consumption of 16.32 degrees ; Such as civil electricity price of 0.558 yuan / kWh, the cost per ton of hot water is 9.11 yuan.
Air source heat pump water heater is more safe and reliable
Air source heat pump water heater relative to the electric water heater and gas water heater, there is no electric water heater leakage and gas water heater gas leaks, carbon monoxide poisoning and other security risks, has a very good safety performance, especially for families with children and children at home , And in order to ensure the air source heat pump water heater widely used, air source heat pump water heater can be -25 degrees to 40 degrees within the temperature can be normal operation.