{"product_id":"solkungen-luftsolfangare-full-black-slim-edition-outdoor","title":"Solar King Solar Air Heater Full Black Slim Edition Outdoor","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eWhy Full Black?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eFull Black is a unique product with unparalleled efficiency, made in Sweden!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eIts efficiency is more than 4 times higher compared to solar cells! \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eIt is a much, much better investment than solar cells and pays for itself in just a couple of years. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe payback period for solar cells is approximately 15 years - at best.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eFull Black works excellently in freezing temperatures and provides heat even if the temperature drops below minus 20 degrees!\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eSolar cells have an efficiency of around 15%, meaning they only convert 15% of solar radiation into electricity. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eOne square meter of solar radiation (on a wall) contains approximately 800 W, which only yields 120 W in electricity\/heat via solar cells. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eFull Black (outdoor), on the other hand, provides around 500 W of heat under similar conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eHeat contribution even in cloudy weather - 10-year transmission warranty - Extremely low weight - easy to move.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eExtremely efficient absorber (compared to a black-painted sheet metal)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eFull Black pays for itself faster than the best heat pump\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eMore than four times more efficient compared to solar cells\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eVery low weight, easy to handle - simple DIY installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eAnnual yield \u003e1000 kWh, in the video, 100 x 75 x 3 cm., 5 kg\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eIntegrated thermostat handles start\/stop\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eWorks excellently even at colder than 20 below zero (!)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eAdjustable noise level\/airflow\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 14px;\"\u003eCan be powered by a solar cell if electricity is unavailable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eNo solar air collector on the market comes close to the high efficiency of Full Black. \u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eAt least not at cold outdoor temperatures. It also provides heat even in moderately cloudy weather.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe solar air collector's absorber is a super-selective absorber, which is much more efficient than a blackened sheet metal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThis super absorber traps the radiation and instead converts it into incoming warm air. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe annual yield is just over 1000 kWh and pays for itself in just a couple of years, which is much less compared to an air-source heat pump and solar cells, which in reality have a payback period of at least 15 years.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cspan style=\"background-color: initial; text-align: initial;\"\u003eThis solar air collector comes with pre-assembled weather and corrosion-resistant wall mounts, an adjustable power adapter for desired fan speed; 1 meter of air ducting and a built-in thermostat for 25 degrees.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cspan style=\"background-color: initial; text-align: initial;\"\u003eThe solar air collector can be mounted vertically or horizontally and only starts when air at 25 degrees or more is blown in.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eIf there is no electricity, it can be powered by a 20W solar cell, but it is best to power it with a power adapter.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eWith adapter operation, the annual cost is about 10 SEK.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe solar fan is thus powered either by an adapter and fixed thermostat - or a 20 W (adapted) solar cell, not both.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eFull Black differs from other solar air collectors on the market by, among other things, using indoor air.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThis naturally provides more efficient heating than heating outdoor air, and it eliminates the risk of blowing in spores and pollen that start to grow in indoor crevices.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eBy blowing in outdoor air, you also risk overpressure that can cause moisture damage. (All premises therefore have so-called balanced ventilation, neither over- nor under-pressure.)\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eUsing metal air ducts with a large diameter causes cold drafts, so this solar fan has plastic air ducts with a small diameter.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe efficiency of a solar air collector is calculated by the difference in temperature between the outgoing\/incoming air, multiplied by the airflow. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eEven if the outgoing air in a solar air collector may feel warm, the effect can still be insignificant (the \"value\" of the heat) - this is because the airflow is very low.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe theoretically highest power a 1 square meter solar air collector can have is the temperature difference x 1.2 (constant) x airflow in liters\/second. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eIf a solar air collector is stated to blow a certain number of liters\/second, say 100 cubic meters\/hour = 28 liters\/second, then the theoretically highest temperature increase\/square meter it can provide is 30 degrees: 30 x 1.2 x 28 = approx. 1000 W (At 100% efficiency - which no solar energy product has. Maximum solar radiation\/square meter is approx. 1000 W.)\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eThe effect of a solar air collector depends on the airflow.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eStating the airflow for a solar air collector by specifying the fan's capacity is directly misleading. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe capacity stated on the fan label of an axial fan is its \"free blow\" - i.e., when the fan neither needs to suck nor push. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eIf an axial fan, for example, is used to suck air through a solar air collector, the airflow drops dramatically. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eIf the fan's \"free blow\" is 100 cubic meters\/hour, the actual airflow might be 15 cubic meters\/hour.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThus, a solar air collector - if the outdoor temperature is lower than the indoor temperature - can never even come close to a 30-degree temperature increase\/square meter if the stated airflow is, for example, 100 cubic meters\/hour, which products on the market similar to the Solar Fan claim. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eSimilarly, similar products to the Solar Fan claim that they heat a certain area\/volume - this depends entirely on how the premises are insulated and what is meant by \"heating\". \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eIs a half-degree warming \"heating\"? The annual yield in kWh, however, is relevant information. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eHow the product performs at sub-zero temperatures, moderate cloudiness, is absolutely crucial for the annual yield.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003e\u003cstrong\u003eThe video was recorded on 2021-02-12, 14:45 when the outdoor temperature was minus five degrees.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 14px;\"\u003eThe temperature increase is therefore over 30 degrees, and if it had worked with the indoor air, as it should, the return air would have been 35-40 degrees.\u003c\/span\u003e\u003c\/p\u003e","brand":"Solkungen","offers":[{"title":"Default Title","offer_id":42364138750187,"sku":"SLK-1601","price":3095.0,"currency_code":"SEK","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/4073\/7515\/products\/solkungen-luftsolfangare-full-black-slim-edition-outdoor-sku-slk-1601-ean-36546499412203.jpg?v=1666355240","url":"https:\/\/villahome.se\/en\/products\/solkungen-luftsolfangare-full-black-slim-edition-outdoor","provider":"Villahome.se","version":"1.0","type":"link"}