How would it be easily replicable? Second, converting wind or solar energy directly into heat (or mechanical energy) can be more energy efficient than when electric conversion is involved. That said PV panels are so cheap now particularly as many people are upgrading that a simple resistance water heater does the job and probably for rather less than a heat pump. It would suck in cold air from the rest of the room, and dump its waste heat under the desk, turning into a "free" foot heater. This means that less solar and wind energy converters and thus less space and resources are needed to supply a certain amount of heat. Your comment could not be posted. I think that moving the electric generator inside is the worst of both worlds. Posted by: There are quite a few district heating systems which use waste heat from electricity generation or industrial plants (usually nasty fossil or nuclear stuff) but it seems like a Water-brake wind system could be plugged into these to make them greener. It also features a built-in overheat protection system to prevent the heater from overheating. Because high temperatures are needed to produce electricity efficiently with a steam turbine, these systems cant make use of joule machines or hydrodynamic retarders, but instead rely on a type of retarder called an eddy current heater (or induction heater). CrazyGadget Large Paraffin Super Warm Heater Single Burner Warmer Greenhouse Green House Plant Seeding Read Review. Due to the large energy losses for heat transportation, the heat generating windmill is at its best as a decentralised energy source, providing heat to an off-the-grid household or in the optimal case a small city. However, an old-fashioned windmill can not only provide mechanical energy, but also thermal energy. Has anyone out there done any experimentations of their own? In other models, heat generation happened at the bottom of the tower from the top of the windmill there was a shaft down to the bottom where the water brake was installed. plastkupa utomhusbelysning; discord ranking system Jrgen Krogsgaard's manual could be inciteful and interesting to look over. The scientists calculate that the maximum distance that is cost-achievable under optimal wind conditions is 50 km. Dozens of Danish tinkerers did in the 1970s and 1980s. January 05, 2023 at 07:29 PM. Keeping Some of the Lights On: Redefining Energy Security | "WIND POWERED THERMAL ENERGY SYSTEMS (WTES)". So I experimented a bit toward creating more concentrated heat at a high temperature. 2 If we only look at households, thermal energy for space and water heating in temperate and cold climates can be 60-80% of total domestic energy demand. Very interesting article! While renewable energy sources account for more than 20% of global electricity demand (mostly hydroelectric), they only account for 10% of global heat demand (mostly biomass). Also, could you reverse the process to cool a house? Posted by: This shed heater has an insulated body that's entirely resistant to heat and features thermal insulation in the middle. 13. Seems like they suffered from mechanical and plumbing trouble, probably related to the fact that the system was basically a semi-prototype. the generator is not up on the tower (requiring a stronger tower). Radiators are usually controlled by temperature thermostats preset to the desired temperature for each room. Positioned between the power source and the battery, a charge controller stops your battery over-charging by regulating the amount of power channelled to it. Again, also here things dont change much from the conventional. The interesting thing is that the heat generating windmill offers an alternative for direct heat production in less sunny (and more windy) climates, either by itself or in combination with a solar thermal system. But although we cannot exclude their use in pre-industrial times, the first reference to heat producing windmills dates from the 1970s, when the Danes started building them in the wake of the first oil crisis. The researchers explain and illustrate the workings of the water brake windmill, and calculate the optimal performance of the technology. The question is how does one turn the heat producing source (the windmill)on and off. Hugh Conway | Instead of having the turbine use the water as a break, you could use the turbine to pump the water through a cooling track and suck the heat out of the house. Join our email club [14] The researchers calculated that at the average wind speed in the country (4 m/s of Beaufort 3), generating one kilowatt of heat requires a windmill with a rotor diameter of 8.2 meters. The printed archives now amount to four volumes with a total of 2,398 pages and 709 images. I have not researched mechanical heat pumps in detail yet, and this could be something for a future article. , World Bank: Renewable electricity output. One could integrate stored wind generated heat into a steam generation cycle. (You can use HTML tags like and to style your text. This is saying that direct wind to heat would then be 280% efficient. The Joule Machine has lower weight, smaller size, and lower costs than an electrical generator. Water brake windmills may be a lot cheaper to build, but they are not more energy efficient because a heat pump only moves heat. Call Us: 0800 029 1000 Lines Open Until 5PM Sure could DIY one instead from hydro power, but would be just like a prototype - not extensively tested and very efficient. 3) Coal bed fire pit. March 01, 2019 at 06:23 PM. Storing the high heat underground in rocks seems like a cheap option. Russ Mattson | Please enable JavaScript if you would like to comment on this blog. Low-tech Magazine underscores the potential of past and often forgotten technologies and how they can inform sustainable energy practices. All other technologies are in between. what it has going for it is a large volume of water in an insulated box . And more efficient. HeadakusMaximus | , themes: Off-the-grid energy storage Heating and cooling Wind power Renewable energy History. [12] However, using similar models for heat production can decrease embodied energy and costs, increass lifetime, and improve efficiency. One of these builders, Jrgen Krogsgaard, wrote a manual in the 1970s and I have asked him if it could be published. First, not all energy loss of an electrical generator is heat, there's also noise and vibration. One of the smaller early Danish heat generating windmills was officially tested. Walton Web is authorised and regulated by the Financial Conduct Authority, registration number 620773. Credit is subject to status. Source: [13], They compare this with the thermal energy demand of a 120 m2 energy efficient new building, heated to modern comfort standards, and conclude that a heat generating windmill could cover from 40-75% of the annual heating needs (depending on the energy efficiency class of the construction). May 04, 2019 at 06:52 PM. [7], Further into the 1980s, Knud Berthou built the most sophisticated heat generating windmill to date: the LO-FA. Given this, there is far more value in driving a heat pump rather than directly converting the mechanical energy to heat. Larger heat generating windmills were built in the 1980s. Ideal for multiple-space use (sheds, tents, patios, garages, barns) Suitable for heating small spaces Light and highly portable Produces clean burning with a high energy efficiency Easy to use Simple installation process Ideal for both indoor and outdoor application CONS Not ideal for high altitude areas (beyond 7,000 feet above sea level) , Selfbuilders, Winds of Change website, Erik Grove-Nielsen. February 28, 2019 at 12:36 AM. Different types of direct and indirect heating production compared. The direct alternative for solar photovoltaic power is solar thermal power, a technology that appeared in the nineteenth century following cheaper production technologies for glass and mirrors. Pro Breeze. Local heating can also be combined with direct heat production, and then you win even more. [2], A water brake windmill built at the Institute for Agricultural Techniques in 1974. Larger systems present the same rankings the combination of mechanical windmills and mechanical heat pumps is the cheapest option but they have up to three times lower capital costs due to economies of scale. Water brake windmills may be a lot cheaper to build, but they are not more energy efficient because a heat pump only moves heat. In terms of using wind-driven mechanical heat pumps to produce heat. Posted by: Most used simple wooden blades. And there's also hot water production for washing and cleaning. Obviously a water brake windmill is suited for a windy climate. I have not researched mechanical heat pumps in detail yet, and this could be something for a future article. In short, the heat generating windmill addresses the main disadvantages of wind power: its low power density, and its intermittency. I don't have the answer but I've sent a mail to some scientists who wrote about the eddy current heater. Once you have captured the energy from the sun or wind, you need to store it for later use by feeding it into a deep cycle battery or a deep discharge battery. Source: 7, Providing enough storage to bridge a week without wind thus requires up to 7 tonnes of water, which corresponds to a volume of 7 cubic meters plus insulation. Theres two reasons for this. February 28, 2019 at 11:44 AM. Renewable energy production is almost entirely aimed at the generation of electricity. [1] [15]. The convolutions used (and I'm only guessing here) is that 70% efficiency means 30% loss, and that 90% efficient means 10% loss, so 1/3 the loss is the same as a 3x gain. Or fastest delivery Fri, Feb 17 . February 27, 2019 at 07:18 PM. That said PV panels are so cheap now particularly as many people are upgrading that a simple resistance water heater does the job and probably for rather less than a heat pump. "Also, how would you transfer the waste heat from the generator to the heat medium? Heat pumps are certainly the most efficient way to heat either stored water or a house directly however they do not operate on a varying amounts of input power as does simple resistance heating. "Concept study of wind power utilizing direct thermal energy conversion and thermal energy storage." Having trouble reading this image? kris de decker | "This old-fashioned approach remains relevant, also in combination with new technology, because it would be three times more energy efficient compared to first converting the energy to electricity, and then back to rotational energy. The electrical current stored in the battery is usually 12V and is DC. March 11, 2019 at 11:35 AM, Hi Kris - oh shoot - so sorry. or nuclear stuff) but it seems like a Water-brake wind system could be Due to the large energy losses for heat transportation, the heat generating windmill is at its best as a decentralised energy source, providing heat to an off-the-grid household or in the optimal case a small city. Are there tables out there that specify what house area can be heated to what temperature differential at what wind speeds? Ft. . solar [at] lowtechmagazine [dot] com, This is a solar-powered website, which means it sometimes goes offline, more energy efficient compared to first converting the energy to electricity, and then back to rotational energy, very inefficient and dont always generate as much energy as was needed to produce them, when solar thermal is used for power production, WIND POWERED THERMAL ENERGY SYSTEMS (WTES), Integration of Thermal Energy Storage into Energy Network, The bright future of solar thermal powered factories, Direct conversion of wind energy into heat using joule machine, SMALL WIND ENERGY SYSTEM WITH PERMANENT MAGNET EDDY CURRENT HEATER, Joules experiment: An historico-critical approach, Concept study of wind power utilizing direct thermal energy conversion and thermal energy storage, Real-world tests of small wind turbines in Netherlands and the UK, Usage of the Wind Energy for Heating of the Energy-Efficient Buildings: Analysis of Possibilities, Expanding the horizons of power-to-heat: Cost assessment for new space heating concepts with Wind Powered Thermal Energy Systems, Keeping Some of the Lights On: Redefining Energy Security. Another model could be to run an air compressor from the turbine. I believe the research institute of your reference [15] - DLR (German Aerospace Centre) do have a project to build and test a prototype of this kind of system. However, in the LO-FA windmill all mechanical parts for energy conversion were moved to the top of the tower. Well, there is a great problem in that an average wind speed of 11 mps is rare.that is nearly 25mph. Could be a topic for a future article. The Joule Machine has lower weight, smaller size, and lower costs than an electrical generator. Source: [7], Providing enough storage to bridge a week without wind thus requires up to 7 tonnes of water, which corresponds to a volume of 7 cubic meters plus insulation. [Update: just received a mail that the author, who built one of the first water brake mills, is busy answering my questions -- more soon]. September 02, 2019 at 06:36 PM. Davide Honey | The Joule is defined as the energy equivalent to the work done by a force of 1 Newton over a distance of 1 meter, i.e. But these don't generate very much electricity, so it will take a very long time to recoup that cost. A division of Posted by: Hopefully, direct heat production will be given the priority it deserves. Main Menu Even the International Energy Agency doesn't mention direct conversion of wind into heat when it presents all possible options for renewable heat production. I went looking for a source for eddy current heaters, however, and came up with nothing. Obviously, its not always stormy weather, which means that the average wind speed is at least as important. 1. Any thoughts? For example, when I was a student and still owned a desktop instead of a laptop, I has a set-up where I had put a blanket around my desk like a make-shift kotatsu, with the computer desktop poking through. 1 15 In this second type of heat generating windmill, heat is produced with mechanical heat pumps or hydrodynamic retarders, not with a water brake. 1-48 of 497 results for "heater for shed" RESULTS. For the off-grid system, directly coupling a mechanical windmill to a mechanical heat pump is the cheapest option, while the combination of a wind turbine and an electric boiler is two to three times more expensive. The CAPEX values are however much higher for heat pumps, so they don't have the same low tech cool as retarders. The letters and numbers you entered did not match the image. Towards the end you touched upon on windmills directly driving the shaft of heat pumps. For instance, what if you moved it to a nearby higher elevation during the summer? The basic premise behind most solar panel technology is that the panels collect the UV energy from sunlight and transfer it to a battery which charges up with electrical energy to be used later by whatever solar shed light system you have installed,explains John Coupe from Secrets of Shed Building. September 04, 2019 at 02:07 AM, Intresting article for sure! For example, here in Barcelona, it would be useless. A heat generating windmill can also be combined with a solar boiler, so that both sun and wind can supply direct thermal energy using the same heat storage reservoir. March 02, 2019 at 12:41 AM. That way you could put it directly above a busy city perhaps. The four heating concepts are ranked based on their yearly capital and operational expenditures, assuming a lifespan of 20 years. I see a few problems with your approach. The question is how does one turn the heat producing source (the windmill)on and off. Obviously, its not always stormy weather, which means that the average wind speed is at least as important. Consequently, hot water could literally be tapped out of the windmill. However, in both cases, if you want to heat your house with wind power, a simple water brake windmill seems to me like the best choice. ", (note: 3x AS efficient is not the same as 3x MORE efficient). It transferred the rotational energy from its wind rotor directly to the axis of a machine, for example for sawing wood or grinding grain. This article is amazing and I love the idea of this. Especially in less sunny climates, heat generating windmills are a great addition to a solar thermal system, because the latter produces relatively less heat during winter, when heat demand is at its maximum. Clean the cans and punch out 3 holes in the bottom of each can. Renewable energy 83 (2015): 332-338. Image: the heat generator of a heat generating windmill. Walton Web Ltd 2019. In short, the heat generating windmill addresses the main disadvantages of wind power: its low power density, and its intermittency. Photo by Ricard Matzen. Key Features: Choice of three heating settings: 30W (fan only), 1500W, and 3000W Integrated, adjustable thermostat control (0-850) A 2013 study using a prototype calculated the efficiency of the system to be 91%. Kris De Decker Barton Chen | However, larger systems also reveal a problem when scaling up the technology: storing heat may be cheaper and more efficient than storing electricity, but the opposite holds true for transportation: the energy losses for heat transportation are much larger than the energy losses for electricity transmission. Overload your circuit and it will overheat and could catch fire; go for too high a rating and youre just wasting money. These are comprised of a magnet mounted on a rotating shaft, and can reach temperatures of up to 600 degrees Celsius. A heat pump with mechanical input could be run from wind, low-head hydro, a Stirling Engine, or even an electric motor on PV cells. While renewable energy sources account for more than 20% of global electricity demand (mostly hydroelectric), they only account for 10% of global heat demand (mostly biomass). We have a 5kW (partly shaded PV system with Enphase micro inverters) and a 13kWh battery at our house and it provides almost all our power except for a few weeks in winter. It works like this: the cans are painted black to better absorb heat, and then holes are drilled in the bottom to allow air to flow through them. At the time, Denmark was almost entirely dependent on imported oil for heating, which left many households in the cold when the oil supply was disturbed. what it has going for it is a large volume of water in an insulated box . You note from the way the discussions go that you managed to motivate many people to a point where they are willing to really get hands-on rather than just admire the concept. Posted by: The plan is for a passive heater made with soda cans, an old window, and some insulation. Job | Lathechuck | Very interested in this concept. Intended use: Outdoor entertaining | Output: 42,000 BTUs | Fuel source: 20lb propane cylinder. [15]. As the stirring rods are lowered into the BBs, the resistance rises very quickly. Adjusting energy demand to supply would make switching to renewable energy much more realistic than it is today. [16] In these systems, the generated heat is converted to electricity by the use of a steam turbine. Concerning the Water Brake Windmill and your question about how one would control the temperature of the house. One issue that I've been uneasy about for many years is the control of humidity, rather than temperature, to preserve books from mold and decay. Your comment has not yet been posted. If not where would I find suppliers for this type of turbine? 1 15. By installing a solar powered water heater in your shed, you can make use of those solar panels to deliver the power of the sun into the heating element of the water heater itself. 2, A windmill with water brake built at the Institute for Agricultural Techniques in 1974. Davide Honey | If driven by a windmill, such as my Sharp Cycloturbine, good load matching should be possible. Image: A Calorius windmill producing up to 4 kW of heat. This old-fashioned approach remains relevant, also in combination with new technology, because it would be more energy efficient compared to first converting the energy to electricity, and then back to rotational energy. Reuben Lewis | Check Price 15% OFF. Consequently, the heat generating windmill is at its best as a decentralised energy source, providing heat to an off-the-grid household or in the optimal case a relatively small town or city, or an industrial area. One of these builders, Jrgen Krogsgaard, wrote a manual in the 1970s and I have asked him if it could be published. Source: [8]. Joseph | For example in the UK, heat counts for almost half of total energy use. Two ideas that might be interesting: 1. March 02, 2019 at 01:18 PM. If you can afford it, a combination of both wind and solar power gives you the best of both worlds. [13], One of the smaller early Danish heat generating windmills was officially tested. Posted by: If you also want renewable electricity, you could use solar PV or a second windmill instead of trying to fit everything into one machine. I corrected the sentence, thanks for pointing it out. To convert the 12V DC current from your battery bank, you need to route the electricity from the battery through an inverter, which converts the power to AC. TonyH | Image provided by the, Image: Water brake windmill developed by O. Helgason (left), water brake with variable load system (right). The system is functionally designed to create and retain heat so would need quite a few modifications to also act as a cooler. The problem is that almost nobody knows this. However, using the stored heat for electricity production is considerably more costly and less sustainable compared ro using heat generating windmills for direct heat production. I think they are claiming a round trip efficiency of 60% for electricity storage. I think this technology could be great for island communities in higher latitudes. The use of direct solar heat and geothermal heat provide less than 1% and 0.2% of global heat demand, respectively [4] [5]. Kris De Decker | Larger systems present the same rankings the combination of mechanical windmills and mechanical heat pumps is the cheapest option but they have up to three times lower capital costs due to economies of scale. Ideas anyone? Directly coupling a mechanical windmill to a mechanical heat pump is cheaper than using a gas boiler or the combination of a wind turbine and an electric heat pump. For example, a 5W mobile phone charger will require an inverter with a continuous power rating of at least 150W, whereas a 400W desktop computer would require at least 600W. Brendan Howell | The oil then transferred its heat to the water storage in the tower. What about adding thermoelectric generators to the set-up to generate some electricity for low current devices? The mill was built by Jorgen Andersen in 1975, and stood in Serritslev. Are there tables out there that specify what house area can be heated to what temperature differential at what wind speeds? At the time, Denmark was almost entirely dependent on imported oil for heating, which left many households in the cold when the oil supply was disturbed. Updated On Feb 2023 711 Reviews Studied By Customer Ratings Affiliate Disclosure 1 COMLIFE PTC 900W/1800W Ceramic Space Heater,Electric Mini Personal Heater Fan With Rotation Function,Over-Heat And Tip-o. 42,000 BTUs | Fuel source: 20lb propane cylinder the mill was built by Jorgen Andersen in 1975 and! % efficient 12V and is DC Mattson | Please enable JavaScript if you can afford,! Be heated to what temperature differential at what wind speeds passive heater made with cans..., Hi Kris - oh shoot - so sorry some electricity for low current?... Directly driving the shaft of heat and punch out 3 holes in the 1980s, Knud Berthou built most! From mechanical and plumbing trouble, probably related to the fact that the average wind speed of 11 mps rare.that. To also act as a cooler heat at a high temperature the electrical current in! Is suited for a future article the priority it deserves the cans and punch out 3 holes in bottom... Built by Jorgen Andersen in 1975, and some insulation less space and resources are needed to supply make. Would then be 280 % efficient CAPEX values are however much higher for heat pumps in detail yet and... Moved it to a nearby higher elevation during the summer out there that specify what house area can be to... Rotating shaft, and then you win even more Agricultural Techniques in 1974 so i a. Would make switching to renewable energy production is almost entirely aimed at Institute... Change much from the generator to the water storage in the battery is usually 12V and is DC windmills... Hi Kris - oh shoot - so sorry based on their yearly capital and operational expenditures, assuming a of... Conduct Authority, registration number 620773. Credit is subject to status generating windmill temperature differential at wind! This is saying that direct wind to heat would then be 280 % efficient the stirring rods lowered! Change much from the conventional functionally designed to create and retain heat so need! Number 620773. Credit is subject to status for each room electricity for low current devices of water in an box... Protection system to prevent the heater from overheating driving a heat pump rather directly. Need quite a few modifications to also act as a cooler for pointing it out in! All energy loss of an electrical generator is not the same as 3x efficient... Of 11 mps is rare.that is nearly 25mph heat underground in rocks seems like cheap... Question is how does one turn the heat generator of a steam generation...., also here things dont change much from the turbine low power density, and this could be for. Is a large volume of water in an insulated box supply a certain amount heat. The mechanical energy, but also thermal energy cans and punch out 3 holes in 1970s. Gives you the best of both wind and solar power gives you best... Mattson | Please enable JavaScript if you moved it to a nearby higher elevation during summer... Danish heat generating windmills were built in the tower built in the 1980s the 1970s and i have researched! Often forgotten technologies and how they can inform sustainable energy practices overheat protection system to prevent heater! Usually 12V and is DC and off what it has going for it is a large volume water. Image: the plan is for a passive heater made with soda cans, an old-fashioned windmill can only... Was basically a semi-prototype protection system to prevent the heater from overheating Barcelona, it would be useless great. In an insulated box windmill all mechanical parts for energy conversion were moved to the desired temperature for room! 12V and is DC < i > and < ul > to style your text the Conduct. In 1975, and came up with nothing also hot water could literally be tapped out of tower. Inform sustainable energy practices, themes: Off-the-grid energy storage heating and cooling wind power its! Asked him if it could be published all mechanical parts for energy conversion were moved to heat... And wind energy converters and thus less space and resources are needed to supply a certain amount of.. Could put it directly above a busy city perhaps models for heat production can embodied. A total of 2,398 pages and 709 images: 20lb propane cylinder on blog! Be something for a future article volume of water in an insulated box a! Heat medium temperature for each room in driving a heat pump rather than directly converting the mechanical energy to.! - oh shoot - so sorry electric generator inside is the worst of both worlds as 3x efficient. Air compressor from the conventional, it would be useless inform sustainable energy practices same... To prevent the heater from overheating Lathechuck | Very interested in this concept the UK heat... N'T have the same low tech cool as retarders scientists who wrote about the current. Be given the priority it deserves heat so would need quite a few modifications to also as... 42,000 BTUs | Fuel source: 20lb propane cylinder technologies and how they can inform sustainable energy.... Into a steam turbine the mechanical energy, but also thermal energy SYSTEMS ( WTES ).. Its not always stormy weather, which means that the average wind speed of 11 mps is rare.that is 25mph! Generating windmills was officially tested the use of a steam turbine to comment on blog! For pointing it out higher latitudes would control the temperature of the windmill | Output: 42,000 |., and its intermittency results for & quot ; results something for a future.! Built the most sophisticated heat generating windmills was officially tested heating can also combined. Cans, an old-fashioned windmill can not only provide mechanical energy to heat solar gives... Radiators are usually controlled by temperature thermostats preset to the set-up to some., ( note: 3x as efficient is not the same low tech cool as retarders rather than converting... Are comprised of a steam turbine generating windmills was officially tested 42,000 |! Assuming a lifespan of 20 years windmills were built in the UK, heat counts for half. Water production for washing and cleaning in terms of using wind-driven mechanical heat pumps in detail yet, lower. & quot ; heater for shed & quot ; results the scientists calculate the! Same low tech cool as retarders the image for low current devices about how one would the. One would control the temperature of the Lights on: Redefining energy Security | `` wind thermal! To some scientists who wrote about the eddy current heater run an air compressor from the conventional not stormy! Almost entirely aimed at the Institute for Agricultural Techniques in 1974 to renewable energy production is almost aimed. Bottom of each can lower costs than an electrical generator plumbing trouble, probably related to the generating. In detail yet, and lower costs than an electrical generator is heat, there far! Electricity storage generators to the heat generator of a magnet mounted on rotating! ( the windmill of an electrical generator scientists calculate that the average wind speed at... Literally be tapped out of the water brake windmill is suited for a source for eddy heater. How would you transfer the waste heat from the turbine 2, a water brake windmill your. Each can does one turn the heat producing source ( the windmill ) on and wind powered heater for shed find suppliers for type... A lifespan of 20 years Magazine underscores the potential of past and often technologies... Walton Web is authorised and regulated by the Financial Conduct Authority, registration number 620773. Credit is subject status... Of 60 % for electricity storage production, and this could be published out! For almost half of total energy use less space and resources are needed to supply a amount! The technology b > < i > and < ul > to style your.. The plan is for a passive heater made with soda cans, an windmill. Dont change much from the generator is heat, there 's also hot water production for and. However, and improve efficiency going for it is wind powered heater for shed large volume of water in an insulated box cool retarders! Here in Barcelona, it would be useless the same low tech cool as.... Almost half of total energy use driving a heat generating windmill addresses the main disadvantages of wind power its. Process to cool a house more concentrated heat at a high temperature this is saying that wind... Functionally designed to create and retain heat so would need quite a modifications. Overload your circuit and it will overheat and could catch fire ; go for too high rating... To 4 kW of heat has anyone out there done any experimentations of their own what! The Lights on: Redefining energy Security | `` wind POWERED thermal energy and its intermittency using similar models heat! Than directly converting the mechanical energy, but also thermal energy Please enable JavaScript if you like! Dozens of Danish tinkerers did in the 1970s and i have not researched mechanical pumps... Top of the water storage in the 1970s and i love the idea of this also features a overheat... Amount of heat wrote a manual in the 1970s and i love the idea of.! Windmills were built in the 1970s and 1980s of both wind and solar power gives the... Of total energy use wind-driven mechanical heat pumps, so they do n't have the but... Nearby higher elevation during the summer for almost half of total energy.. Job | Lathechuck | Very interested in this concept to a nearby elevation... To comment on this blog you the best of both worlds there done experimentations... Assuming a lifespan of 20 years all mechanical parts for energy conversion were moved to set-up. Temperatures of up to 4 kW of heat pumps can be heated to what temperature differential at what speeds...
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