P
peterpumpkin
Hi - we have a pellet boiler that heats three zones. I want to be able to work out what percentage of the fuel and maintenance costs to allocate to the different zones - reasonably accurately. I looked at heat meters but saw that they were expensive. I then thought of monitoring the pumps - if I knew how long each pump had been running for a period of time, then calculated the percentages, I could divide the fuel costs up in those percentages. I found some small digital meters that now monitor the electricity consumption in watts. NB - this should work as long as pumps aren't run with all the TRVs closed - ie not using much fuel; it's more likely that the TRVs in all zones will be set in a similar fashion.
My problem is that two of the zones use Grundfos Alpha2 L15-60 130 pumps and the other one uses a Grundfos Magna1 25-60 180 pump. I need to find out if these pumps, on average, will use a similar amount of power - ie whether or not the electricity consumption of each pump will be fairly indicative of the fuel consumed when calcuated as a percentage of the total amount of electricity consumed - or if I will need to tweak the figures to take into account the electricity consumption of the different pumps.
Cots will be shared by two users - one having the two Alpha2 pumps and the other having the Magna1. Hot water is less important because costs will be split 50/50 by agreement (but this pump is metered in the same way).
Any ideas? Thanks!
My problem is that two of the zones use Grundfos Alpha2 L15-60 130 pumps and the other one uses a Grundfos Magna1 25-60 180 pump. I need to find out if these pumps, on average, will use a similar amount of power - ie whether or not the electricity consumption of each pump will be fairly indicative of the fuel consumed when calcuated as a percentage of the total amount of electricity consumed - or if I will need to tweak the figures to take into account the electricity consumption of the different pumps.
Cots will be shared by two users - one having the two Alpha2 pumps and the other having the Magna1. Hot water is less important because costs will be split 50/50 by agreement (but this pump is metered in the same way).
Any ideas? Thanks!