I'm trying to get a bit of blown hot air to the area around the
vehicle lift at work, I have ample hot water from the buffer tank of
the woodchip boiler. A 20kW device from Dunham-Bush costs around 700
quid new but I have the condenser from a 3ph mitsubishi air
conditioner, it has a single 10mm coil laid serpentine like through
the fins, so unlike a lorry radiator where the gill tubes are
parallel. I'm told a vehicle radiator will not stand the 2 bar
pressure and I cannot use aluminium in the circuit so oil coolers are
out too.

Anyone care to venture a guess how much heat it may emit with 80
degree water pumped through it? and would a domestic central heating
pump run sufficient water through at the likely back pressure of up to
6 metres of 10mm copper pipe?

AJH