Saving the Planet … or is it ?

This video is worth a look. **LINK**

Tony

Thanks for that Peter and the offer of borrowing your old unit. I am thinking that a split system, which seems to operate at a higher output temperature, maybe my best approach.

I am in no hurry to jump into buying something yet as it is mostly an academic study as my heating costs are not excessive, even with bottled gas! However, I would like to do my bit to reduce my carbon footprint.

My concern has always been that the efficiencies are never what the manufacturers quote, I have tried to discuss this with them but they refuse to answer my questions - I have approached two of the major manufacturers with technical departments in the UK and they have not got back to me despite repeated requests. They just quote the DIN tests as this is all they have to quote on their technical specs. The trouble is the values quoted are for laboratory conditions with much lower humidity values than we experience here in the South West and I am still unable to determine whether the water removed from the test air is replaced as it is condensed. If it is not then the efficiency of the unit will rise as the test progresses.

The thermal conductivity of ice at 0 deg C is about 2 W/mK compared with a heat exchanger material conductivity of about 385 in the case of copper and 205 for ally. So any build-up of ice (which will occur at air temperatures of less than 10 C) will have a seriously detrimental effect on the ability to remove useful heat from the air.

Maybe this has been taken into account in the design of these ASHPs, I do not know.

Anyway, I will watch what happens in the heating industry with interest.

Steve

Yes agree, thats often the case, the real world figures of anything are vastly different to the test results and the ASHP is just part of the muddle. I had to do something about my heating system and the way I've "split it" seems succesful so I'm pleased with the results, the ASHP could be changed for a more efficient gas/oil boiler or even an improved HP. There is the threat of Stirling cycle and two stage HP which are supposed to be more efficient so I regards my experiment as meeting my objectives but only at the moment.

I'll be interested in how your views develop and the results of any actions.

Peter.

The only real solution... if they were serious that is

Joanna Lumley: Actor calls for 'wartime' rationing to help ease climate crisis

**LINK**

A 'special' train with 2000 tonnes of aviation fuel was delivered to ' Glasgow ' from Isle of Grain last week.

That is 4000 tonnes, including the return trip .

Just for a ' jolly chinwag '.

30,000+ on mega welfare crammed into a tight group in the middle of the covid19 delta variant outbreak who will all fly back home around the planet in 2 weeks time

Sounds sensible to me, yup

You needn't worry, according to Jacob Rees Mogg you can't catch Covid from people you know.

How about something as innocuous as Halloween? Depending on which numbers one chooses, somewhere between 17-24million pumpkins were sold in the UK. Only about 10 million grown UK so 7-14 million imported. Average weight we'll optimistically call 4kg. Around 80,000 tonnes of transport and half of that international. Only 5% get eaten and also the losses of food waste and wasted agriculture...

pgk

Meanwhile the container ships brimming with stuff we don't need are stacked up outside container handling ports who are unable to process the amazing volume of crap being imported

Most of this stuff is manufactured in coal burning CO2 belching factories in China etc

You couldn't make it up

Edited By Ady1 on 01/11/2021 07:48:37

I like 'stuff' as much as anyone but the amount of useless tat nobody needs is truly amazing, all has to be made somewhere

Tony