Everytime that I sign on, I get a notification that I have one new message. When I click on the link, it says "Access Denied". Totally confused :~ Any explanation gratefully received.
Thanks for the reply. Yes, I agree that a house of circa 240 - 280 sq mtrs should have a heating requirement of 14-17 kw. The main problem with a ASHP, is that it does have difficulty in coping with sub zero temps, so usually kicks in the immersion heater @ 3 - 6 kw, depending on the setup. It also has to defrost the fan coils to prevent icing up. Have just looked at the GSHP running hours for this Jan - Feb, ( I record these weekly with outside air temp as well), which were quite cold. Jan was between 90 - 100 hrs per week, whilst Feb came in at circa 140 wk. The electric heater did activate as well, for short periods, (4 hours over the 2 months). With regard to the electricity supply. A 7kw unit should need circa 2Kwh @ output of 35C, slightly higher @ 50C for rads. Those figures are based on external air temps of +7C. If the 3Kw heater is needed, then a 6Kw supply should be ok. Hope this helps
If you go to the Chinese shop, then do not buy the "conserve of bamboo", as they do contain MSG. It does not worry us, as we use them in stir fries, or as nibbles, but I do remember you saying about Robert having a allergic reaction to MSG.
What size is the large house? Just looking at a few calculations, a 100 sq mtr house could use 25000 kwh of heating if insulation levels are low? A GSHP of 10kw output would cover that amount. Sorry your site is not back up, as would have used your calculator.
Depends on the pump size and therefore the trench length. 9Kw output IVT HT+ circa 14k Euro, with 137 mtr trench about 2k + iva @10%. Basic power for it is 2kwh, or 3kwh if the immersion heater is used. Anyway, once you get over 3kw supply, it is only the kw supply standing charge that increases, not the unit cost. You can opt now for the BTA3 Enel tariff, just for the pump ( seperate meter), which is lower than the normal rate, so even more saving. If resident and paying tax here, then you can recoup up to 50% of the costs over 5 years from your tax payments, for a retrofit. Was actually making some calculations today, as to how many hours the pump here has operated over the last year. From 29/08/2011 to 27/08/2012, it has run for 1817 hrs. Multiply that by 2.2kwh (it is a 11kw output unit) and you get to 4000kwh of electricity used. From 02/04/2012 to 01/10/2012 it has run for 223hrs, so 490kwh used, basically for domestic hot water. (160 ltr water tank @ 48C, timed off from 20.00 until 07.00 daily. Disinfection cycle once per month to 65C.
Have cleaned the heat pump filters, plenty of wood if needed. Just got to get the second 47kg gas bombola. 100 odd candles and back up batteries for the torch, plus led lights. Plenty of canned and dried foodstuffs as well. Wine etc to be stocked up soon. 1000 books for the kindle and hundreds of DVDs. Never had a problem with the diesel, but you may be a lot higher than us!!
Comments posted
Thanks for the reply. Yes, I agree that a house of circa 240 - 280 sq mtrs should have a heating requirement of 14-17 kw. The main problem with a ASHP, is that it does have difficulty in coping with sub zero temps, so usually kicks in the immersion heater @ 3 - 6 kw, depending on the setup. It also has to defrost the fan coils to prevent icing up. Have just looked at the GSHP running hours for this Jan - Feb, ( I record these weekly with outside air temp as well), which were quite cold. Jan was between 90 - 100 hrs per week, whilst Feb came in at circa 140 wk. The electric heater did activate as well, for short periods, (4 hours over the 2 months). With regard to the electricity supply. A 7kw unit should need circa 2Kwh @ output of 35C, slightly higher @ 50C for rads. Those figures are based on external air temps of +7C. If the 3Kw heater is needed, then a 6Kw supply should be ok. Hope this helps
If you go to the Chinese shop, then do not buy the "conserve of bamboo", as they do contain MSG. It does not worry us, as we use them in stir fries, or as nibbles, but I do remember you saying about Robert having a allergic reaction to MSG.
What size is the large house? Just looking at a few calculations, a 100 sq mtr house could use 25000 kwh of heating if insulation levels are low? A GSHP of 10kw output would cover that amount. Sorry your site is not back up, as would have used your calculator.
Sorry to hear you are giving up. Hope you manage to get a sale and all the best, after all the hard work that you have put into the project.
Depends on soil type. Usually between 1.3 to 1.5 mtrs deep x 1.2 mtrs wide.
Depends on the pump size and therefore the trench length. 9Kw output IVT HT+ circa 14k Euro, with 137 mtr trench about 2k + iva @10%. Basic power for it is 2kwh, or 3kwh if the immersion heater is used. Anyway, once you get over 3kw supply, it is only the kw supply standing charge that increases, not the unit cost. You can opt now for the BTA3 Enel tariff, just for the pump ( seperate meter), which is lower than the normal rate, so even more saving. If resident and paying tax here, then you can recoup up to 50% of the costs over 5 years from your tax payments, for a retrofit. Was actually making some calculations today, as to how many hours the pump here has operated over the last year. From 29/08/2011 to 27/08/2012, it has run for 1817 hrs. Multiply that by 2.2kwh (it is a 11kw output unit) and you get to 4000kwh of electricity used. From 02/04/2012 to 01/10/2012 it has run for 223hrs, so 490kwh used, basically for domestic hot water. (160 ltr water tank @ 48C, timed off from 20.00 until 07.00 daily. Disinfection cycle once per month to 65C.
Thank goodness I have a heat pump, such a simple set-up!!
No way Bella. Samoyeds that I used to have once, would pull a sled out of the snow, but now its a 4x4!!!
Can usually get out ok in the Pajero. Still going through the wood, 6 years on!! Dogs would drink the brandy!!!
Have cleaned the heat pump filters, plenty of wood if needed. Just got to get the second 47kg gas bombola. 100 odd candles and back up batteries for the torch, plus led lights. Plenty of canned and dried foodstuffs as well. Wine etc to be stocked up soon. 1000 books for the kindle and hundreds of DVDs. Never had a problem with the diesel, but you may be a lot higher than us!!