Michelle Konzack
New Member
Hi *,
are there DIYer here which have build their own heatpump?
I can get from my distributor a Danfoss BD350GH/Twin compressor for only 480€+VAT.
It run from pure 24V and the power consumption is maximum 660W or 27A.
I think, this is very acceptable.
However I need two heat exchanger matching the BD350GH/Twin for MAXIMUM power output and heating only.
First one will coupled to the two 200m HDPE Pipes 40x2,4mm which are on the top of my EarthBattery, which can have up to 50degC.
But I will bypass the Compressor, as long as the 450m3 EarthBattery is hot enough to provide enough energy for my Underfloor Heating System.
Even if the temperature goes down to +20degC, the Greenhouse will stay above +10degC in the Winter
AFAIK, the fist-formule 1:4 count only for realy high efficient HeatPumps, but they count this at 0degC I think.
Hence my one will be not a High-Efficient one, but one which run with a MUCH higher inlet temperature
From the theorie I should get by 20degC inlet temperature (flowrate up to 20l/min using an adjustable Grundfoss Alpha circulation pump), 660W power consumption at 24V roughly 2,6kW out of it right? (PLEASE correct me positive or negative)
Note:
Heating up the EarthBattery is done from a Fronius Symo 10kW, 18 solarpanels 550W, the Fronius Ohmpilot 9kW and a In-Flow Heater wit 3x3kW. The Symo deliver up to 15.000kWh a year, which is even MUCH more, as the EarthBattery build under my Winter-GreenHouse can take, hence from October when it become colder in Estonia, I can use the Fronius to even heat the House directly with electric.
The EarthBattery should store enough energy to provice me until beginning of January with enough heat.
Since I will have two Symo running, I have enough Energy from mid of January to power the HeatPump.
Any help welcome
Thanks in advance
Michelle
are there DIYer here which have build their own heatpump?
I can get from my distributor a Danfoss BD350GH/Twin compressor for only 480€+VAT.
It run from pure 24V and the power consumption is maximum 660W or 27A.
I think, this is very acceptable.
However I need two heat exchanger matching the BD350GH/Twin for MAXIMUM power output and heating only.
First one will coupled to the two 200m HDPE Pipes 40x2,4mm which are on the top of my EarthBattery, which can have up to 50degC.
But I will bypass the Compressor, as long as the 450m3 EarthBattery is hot enough to provide enough energy for my Underfloor Heating System.
Even if the temperature goes down to +20degC, the Greenhouse will stay above +10degC in the Winter
[B]Now I need help from someone, who can tell me how big the two heat exchanger must be.[/B]
[B]Also, How much heat do I realy get out of the HeatPump if the Inlet Temperature is 20-30degC?[/B]
AFAIK, the fist-formule 1:4 count only for realy high efficient HeatPumps, but they count this at 0degC I think.
Hence my one will be not a High-Efficient one, but one which run with a MUCH higher inlet temperature
From the theorie I should get by 20degC inlet temperature (flowrate up to 20l/min using an adjustable Grundfoss Alpha circulation pump), 660W power consumption at 24V roughly 2,6kW out of it right? (PLEASE correct me positive or negative)
Note:
Heating up the EarthBattery is done from a Fronius Symo 10kW, 18 solarpanels 550W, the Fronius Ohmpilot 9kW and a In-Flow Heater wit 3x3kW. The Symo deliver up to 15.000kWh a year, which is even MUCH more, as the EarthBattery build under my Winter-GreenHouse can take, hence from October when it become colder in Estonia, I can use the Fronius to even heat the House directly with electric.
The EarthBattery should store enough energy to provice me until beginning of January with enough heat.
Since I will have two Symo running, I have enough Energy from mid of January to power the HeatPump.
Any help welcome
Thanks in advance
Michelle