Electric heating and heat pump heating that efficiencyWith the electric heating tube heating or PTC, and with the heat pump refrigerant, the high efficiency high?? the energy consumption is small, small? Please enlighten.I know that one is to convert electrical energy into heat energy, another is the transmission of heat, like Kano, but I want to know what the difference? For example, in the summer, if the heat pump heating bath water, than the electric water heater is used in winter, heating and air conditioning heating heater PTC which province energy about, province? Or what percentage?
(in comparison with the following table)1T hot water required calories: Q=CM t=1Kcal*1000Kg* (55-8) c * (1+0.5) =49350KcalHeat pump: 49350kcal/860kcal/3.5*0.64 yuan, *365 days, =3830 yuan / yearElectrical assistance: 49350kcal/860kcal/0.95*0.64 yuan *365 days =14110 yuan / yearFuel: 49350kcal/10200kcal/0.85*4.8 yuan, *365 days, =9972 yuan / yearNow we know that heat pump water heater hot water 1T annual operating costs 3830 Yuan Electric annual operating costs 14110 yuan, annual operating costs of 9972 yuan for the fuel pump water heater than the electric auxiliary annual savings of.10280 yuan / year, saving 6149 yuan more than the annual fuel, everyone agrees, no denying, however because of heat pump water heater add electric auxiliary, which is bound to cause the operation cost will increase invisible heat pump water heater, the running cost and the running cost of electric auxiliary additive, divided by 2 (3830 yuan +14110) /2=8970 yuan, while the annual operating cost of 8970 yuan is very similar to the operation cost of fuel 9972 yuan investment, heat pump water heater far beyond the initial investment of fuel equipment, under the premise of environmental protection is worth promoting, but from the energy saving, does not seem desirable, but also difficult to escape the letter fraud suspects. If the client in engineering design The preparation with electricity, water meter is measured, as can be imagined, who are reluctant to go a few times in the money to buy the same fuel furnace combustion furnace operation cost almost the same products, the author thinks that the use of electric auxiliary heat pump water heater is not recommended and encouraged, or pragmatic, also save some trouble, I do not know the reader I agree with the view, for reference.
In fact, no matter which way the above, its subjective purpose is correct. But ignore the safety problem exists objectively and save the problem, is a breakdown in 1T hot water of 55 DEG C, the water temperature is 8 degrees centigrade, calculation of the environment temperature is 15 DEG T47 DEG C
There are three ways of using electric assistant in engineering:1 、 the water heater in the heating unit of the engineering unit is provided with electric assistance to improve the water inlet temperature of the unit. It is helpful to the operation of the unit and is beneficial to the operation of the unit in winter2. The water tank is directly loaded with electricity, and the heating time and water temperature are limited by the temperature control. For example, when the ambient temperature is lower than a certain setting temperature, the electric auxiliary is switched on, and the water temperature is closed when a certain temperature is set, which is beneficial to the normal hot water supply3, the water tank built-in electric auxiliary temperature control restrictions, constant temperature water inlet, such as 50 degrees water inlet, 70 degrees to stop work, this method can shorten the working time of the unit, prolong the compressor life
