Calculating the Yearly Cost of 131 kW Cooling System

[TSN79]

I have a cooling system where the condenser has an effect of 131 kW. The text says that the condensor-heat can be recirculated using the ventilaton-system 5 months a year, and that the vent.system is running between 0800-2000 monday to friday. I also have the energi price pr kWh. The cooling-system runs 365 days a year. I'm supposed to find the yearly cost. I have other info like flow/h, and the enthalphies.

I don't really know where to start...so it says "the condensor-heat can be recirculated", is that the effect of 131 kW? Anyone?

 

[Astronuc]

It's a bit difficult to understand " the condenser has an effect of 131 kW." Is this the cooling capacity of the condenser, or the heat rejected?

Do you have a COP, coefficient of performance?

I suspect this is something like a heat pump, which can be used to cool or to heat depending on which side is used.

So is this system cooling for 7 months and heating for 5 months?

 

[quicknote]

I would suggest starting by gathering all the necessary information and variables needed for the calculation. This includes the energy price per kWh, the flow rate, and the enthalpies. It is also important to clarify whether the 131 kW refers to the cooling system's capacity or the actual power consumption.

Assuming the 131 kW is the cooling system's capacity, the first step would be to calculate the actual power consumption using the enthalpies and flow rate. This will give us the total energy consumption for the cooling system.

Next, we need to calculate the energy consumption for the 5 months when the condenser heat is recirculated using the ventilation system. This can be done by multiplying the power consumption by the number of hours the ventilation system is running (12 hours per day for 5 months).

Then, we need to calculate the energy consumption for the remaining 7 months when the ventilation system is not in use. This can be done by multiplying the power consumption by the number of hours in a year (8760 hours) and subtracting the energy consumption for the 5 months.

Finally, we can calculate the yearly cost by multiplying the total energy consumption by the energy price per kWh.

It is important to note that this is a simplified calculation and may not take into account factors such as efficiency, maintenance costs, and other variables. It is always best to consult with a professional in the field to ensure accurate and comprehensive calculations.