Now that we have all the input data, we can calculate how much it costs us 1 kWh of thermal energy.

To be able to calculate how much it would cost us heating heat pump we need some information. These are the average temperature at which tp work, electricity prices in certain ratio cheaper and more expensive tariffs and data on the effectiveness of tp at a given average temperature, COP. This calculation applies to tp air-water power 8 kW with a flow temperature 35 C because such is provided in our project, but the principle is the same in any case. Noting that this is a bit simplified calculation.
Data on the average temperature is drawn from a table of actual climate data for that area of Tokyo, which is used in the calculations for energy certificates. Take the months in which heating is provided. We need to know the temperature read by the COP of the heat pump, so that the models can be compared with one another.
Data on the proportion of cheaper and more expensive electricity "stole" from fellow bloggers I GEOTERM. According to his table turns out that tp worked about 65% of the daily rate at the price of 1.06 EUR / kWh and about 35% of the nightly rate, the current price of 0.53 EUR / kWh. From these data we obtain heater that plugs into cigarette lighter an average heater that plugs into cigarette lighter of 0.87 Rs / kWh. It is clear that this figure may vary from user to user, but something we have to count.
Information about the COP (coefficient of performance that says how many kW of heat energy to get 1kW of electricity) individual models tp I found in the manufacturer's specifications excavated on the Internet. I can not know if they're real or theoretical values nor how many are true, but again something we have to count. The label A7/W35, A7 indicates heater that plugs into cigarette lighter the outside air temperature of 7 C, W35 flow temperature of 35 C. For higher flow temperature COP will be lower, as well as to lower the air temperature can be seen in column A2/W35. The table models that take into account, and the cheapest and the most expensive (Gree and Viessmann) I rejected.
Now that we have all the input data, we can calculate how much it costs us 1 kWh of thermal energy. I'll take the example of Mitsubishi tp. The formula for the average price of kWh of thermal energy under the above conditions as follows
Such a calculation that I brought up can really vary from unit to unit as specified lot numbers depend on user systems and weather heater that plugs into cigarette lighter conditions. But I also think that the clever use of the system and the application of automation and control can approach those numbers, and perhaps surpass them.
Data from this and the previous post will be some of the input variables that will be used in the analysis of investments in the heating heat pump in relation to the heating gas to the example of our house.
And a subsequent mind after I finished all in your head checked the logic of what I wrote. In order to take the average temperature would have to cop to grow linearly in relation heater that plugs into cigarette lighter to the outside temperature. And not growing, as can be seen in the diagram where I entered values cop for Toshiba (only because I have them). For more precise information should be a little more math. I would be satisfied if the end result heater that plugs into cigarette lighter I increase 10 or 15%, so with that I'm going to analyze. We can reduce the COP to say 3.8 kWh and get a price of 0.23 EUR / kWh
The conclusion remains about the one that runs through the posts all the time. The cost of generating heat pump is very difficult to determine in advance heater that plugs into cigarette lighter because it depends on how you use the facility and weather conditions. However, when the user for himself compares the profitability of individual heating systems and values are the same in either case. If so look at a problem, we can safely compare unit prices kWh regardless of what amount of heating paid during the year. And according to my calculations the unit price for heating heat pump ranges from .20 to 0.23 EUR / kWh, and who wants a larger safety factor can take 0.25 / kWh.
This calculation is far from the real consumption of such a facility. See what a little Slovenes write on their forums, because there heat pump air-water has a lot more households. http://www.podsvojostreho.net/forum/viewtopic.php?f=7&t=53455 is very difficult to calculate the actual consumption of heat, because it varies depending on external conditions: temperature, humidity. Count it in prodjeku to 30% less than a condensing gas boiler.
http://www.google.hr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCgQFjAA&url=http%3A%2F%2Fwww.samsung-heatpumps.co.uk%2Fdocuments%2FSAMSUNG%2520EHS%2520Running%2520Cost%2520Comparisons.pdf&ei=f7nRUqCjGMPDyQPBiIHgCg&usg=AFQjCNF2gVoYPZr6pcCMiFrRVJQbk2XPFg
This calculation is not intended nor determine the actual consumption. All who are interested heater that plugs into cigarette lighter in the topic of heat pumps have realized that it is more or less impossible not to repeat why. I'm aware that I'm certainly not spending the amount of computational power. All of this computation is used for making investment decision heater that plugs into cigarette lighter in the heat pump. It is a process that I go to their facility and that I wanted to share with others in order to account