为什么不是所有的沙漠都覆盖着太阳能电池板？

@martinfletcher2729
One of the things that I find exceedingly frustrating, is the lack of interest and enthusiasm by the public, of systems and processes that are designed to "Save the planet".
It seems that in the most part (aside from this and a few other channels), the initial response to a "renewable solution" is to find a reason why it won't work perfectly everywhere all the time.
I don't watch mainstream media on the TV at all anymore.
As you continually point out Dave, the solution needs to be a tailored approach.
Evolution is a tailored approach.
The argument for fossil fuels is that it is easier and more convenient than renewables.
Have you ever seen a documentary on what is involved to get petrol from the ground to the petrol station, or the cost and engineering to limit pollution from an internal combustion engine?
Sorry for the rant,  keep up the good work Dave it is much appreciated.
 
我觉得非常沮丧的一件事是，公众对旨在“拯救地球”的系统和过程缺乏兴趣和热情。似乎在大多数情况下（除了这个频道和其他一些频道），对“可再生解决方案”的初步反应是寻找理由，说明它不可能在所有地方、所有时间都完美运行。我现在完全不再观看主流媒体的电视了。正如你不断指出的，戴夫，解决方案需要量身定制的方法。进化就是一种量身定制的方法。支持化石燃料的论点是，它比可再生能源更简单、更方便。你有没有看过关于将汽油从地下提取到加油站的过程，或者限制内燃机污染所需的成本和工程？抱歉发牢骚了，继续保持出色的工作，戴夫，我非常感激。
 
@ttystikkrocks1042
Sometimes, changing a parameter as basic as the orientation of rows of solar panels can have surprisingly large and beneficial effects.  For example, orienting rows mouth/south instead of east/west can eliminate areas of constant shade and therefore help spread the benefits of partial shading across a much larger area.
 
有时候，改变太阳能电池板行列的基本参数，比如方向，可以产生意想不到的大而有益的效果。例如，将行列朝南/北而不是东/西放置，可以消除常年阴影区域，从而帮助将部分遮阴的好处扩展到更大面积。
 
@pipertripp
Covering the massive car parks that are ubiquitous here in the States would be a helluva start with obvious dual use benefits. The agrivoltaic stuff is great too and another good example of the flexibility of solar PV.
 
覆盖美国这里普遍存在的大型停车场将是一个很好的开始，显而易见有双重使用的好处。农业光伏技术也是一个很棒的例子，展示了太阳能光伏的灵活性。
 
@Karagoth444
Agriovoltaics is a brilliant idea and love that more research is being done and finding what to do and what not to.
 
农业光伏是个绝妙的主意，我很高兴看到更多研究正在进行，寻找该做什么和不该做什么。
 
@cahito00
Perhaps a serie of reports on how things are going across the globe? It doesn’t have to cover all countries, but it would be interesting to know more details about each “area” of the globe, regarding solutions and maybe the main hurdles…
 
也许可以做一系列关于全球情况的报告？它不必覆盖所有国家，但了解每个“地区”的解决方案以及主要障碍的更多细节会很有趣……
 
@michaelrutherford4932
I would love to see a show about innovation in vertical axis wind turbines.  I believe they could be usefully integrated into commercial and residential structures easily.  Normalizing hybrid  solar/wind for every day,  would be a leap forward in human development.
 
我希望看到一个关于垂直轴风力涡轮机创新的节目。我相信它们可以很方便地集成到商业和住宅结构中。让混合太阳能/风能成为日常生活的一部分，将是人类发展的一个巨大飞跃。
 
@sam.ramphall
In my country, we're seeing a lot of agriculturally degraded land starting to be used for PV farms. This is due to the land not being productive for agriculture now, and landowners now wanting to have some income without the hard work on the field. This video is giving me hope that maybe those lands could be regenerated by the time the PV farm's land lease is up so it can grow crops again
 
在我的国家，我们看到很多农业退化的土地开始被用作光伏农场。这是因为这些土地现在对农业没有生产力，而土地所有者希望在不需要在田地上辛苦工作的情况下获得一些收入。这个视频让我充满希望，也许这些土地在光伏农场租约到期时能够恢复生产，再次种植作物。
 
@jameslamb4573
I'd like to see a video on domestic renewable energy systems and their potential use in, mostly, passive heating and cooling of homes. More than just a photovoltaic installation shading a roof, although that is no doubt a contributing factor, but energy storage systems, heat banks for example, applied small scale. Can it be done, are the technologies out there? Is there a point where "traditional" HVAC systems will become obsolete?
Cheers.
 
我想看到一个关于家庭可再生能源系统的视频，主要讨论它们在被动加热和冷却住宅方面的潜在应用。这不仅仅是一个光伏系统为屋顶提供阴影，尽管这无疑是一个重要因素，还包括能量存储系统，比如小规模的热储存装置。这样的系统是否可行？现有的技术是否足够？是否存在“传统”暖通空调系统将变得过时的情况？谢谢。
 
@Woodneye-mc5jt
One topic I would love to see because it pertains directly to my upcoming requirements in my sawmill, is light industrial solar installations. There's a plethora of home and large scale examples out there, but very little in the sort or 250KVA range of installations for light industrial supply.
 
我很想看到一个主题，因为它直接关系到我即将需要的锯木厂，那就是轻工业太阳能安装。虽然有许多家庭和大型项目的实例，但在250KVA范围内的轻工业供应安装却很少。
 
@HankusSpankus
Remote solar farms could be industrial factories for processing things such as fertiliser , recycle aluminium and other unpopular activities that a semi automated facility could operate in . Solar panels could also extract water from the air as the main product to also generate hydrogen fuel .
 
远程太阳能农场可以成为工业工厂，用于处理诸如肥料、回收铝等不太受欢迎的活动，这些活动可以在半自动化设施中进行。太阳能电池板还可以从空气中提取水，这将作为主要产品，同时生成氢燃料。
 
@petewright4640
I've often thought about how solar farms may affect soil carbon levels. Here in the UK we generally have plenty of rain and not excessive heat. So the constraint on plant growth (grass under panels) is generally light levels, assuming adiquet nutrient levels. If solar arrays are placed on pasture with otherwise good levels of soil carbon then the amount of conversation of CO2 to soil organic matter is impacted as on average there'll be less grass/weed growth under the panels so soil carbon levels would decline. This represents CO2 emissions into the atmosphere and would partially counter the supposed greenhouse benefit of the  arrays.
 
我常常思考太阳能农场可能对土壤碳水平的影响。这里在英国，我们通常有充足的雨水且没有过热。因此，植物生长（面板下的草）的限制一般是光照水平，假设营养水平足够。如果太阳能阵列放置在土壤碳水平较好的牧场上，那么二氧化碳转化为土壤有机物质的量会受到影响，因为在面板下，草/杂草的生长通常会减少，所以土壤碳水平会下降。这代表了二氧化碳排放到大气中，并且部分抵消了这些阵列所带来的温室效应好处。
 
@chriscavanagh1347
In addition to those benefits, local power production takes a load off the power distribution grid.  IMHO, there should be local and state incentives and plans for farm and small towns to have a requisite level of local power production, and even perhaps mandated local power autonomy targets.Funding from state government to initiate this policy would go a long way to reduce the load and hence future high costs of the grid expansion.  To be most effective, this would need to combine with battery technology.
 
除了这些好处，地方电力生产还可以减轻电力分配网络的负担。在我看来，应该有地方和州政府的激励措施和计划，确保农场和小城镇具备必要的地方电力生产水平，甚至可以设定强制性的地方电力自主目标。州政府为启动这一政策提供资金，将大大减少网络扩展的负担，从而降低未来的高成本。为了最大限度地提高效果，这需要与电池技术结合。
 
@TylerBenney
A good topic to do might be to have a look at scams in the renewable space. Like solar roadways and solar railways( solar panels on the track). As I believe things like this are setting back adoption of renewable by painting a bad picture of them.
 
一个不错的话题可能是研究可再生能源领域的骗局，比如太阳能道路和太阳能铁路（在轨道上安装太阳能电池板）。我认为这些事情会因为抹黑可再生能源而阻碍其推广。
 
@Derpy1969
I think the math showed that the entire USA electrical needs probably in KWHR PER YEAR generated could be done with 100 square miles of panels or a 10x10 mile area.    How they store it for nighttime use, if that includes the gaps between panels, or of the panels were fixed, single, or dual axis tracking I don’t remember.   
The point was it wasn’t much compared to the usable dessert areas in the USA and wouldn’t really cost that much.   
Too bad it’s a hot political issue instead of a simple, financial one.
 
我认为数学表明，美国的电力需求（以每年的千瓦时计算）可能只需要100平方英里的面板，或者一个10x10英里的区域来满足。至于如何储存夜间使用的电力，是否包括面板之间的空隙，或者面板是固定的、单轴还是双轴跟踪，我不太记得了。关键是，这个面积与美国可用的沙漠区域相比并不大，成本也不会太高。真可惜这是一个热门的政治问题，而不是一个简单的财务问题。
 
@Patiboke
I read that cramming the Sahara full of solar panels would cause a climate disaster, but we don't need to. If we leave some space between the panels and mount them on high frxs there would be like 10% shadow which should be a good thing considering global warming.
 
我读到如果把撒哈拉沙漠塞满太阳能电池板，会导致气候灾难，但我们并不需要这样。如果我们在面板之间留出一些空间，并将它们安装在高框架上，那就会有大约10%的阴影，这在全球变暖的背景下应该是有好处的。
 
@janetbayford133
I was in Egypt just over a year ago and on a road trip down to Cairo from Hurghada, I was astonished to see huge circular fields of crops consuming absolutely vast quantities of water from the Nile. I asked the guide why Egypt didn’t instead go in for large scale solar farms which would produce enough surplus electricity to sell to other countries so they could buy food from countries that don’t need to suck the Nile dry to grow it.  There are vast areas of desert that cannot be used for anything else. Seems crazy to me. Perhaps one of your viewers will tell me why it doesn’t make sense.
 
我大约一年前去过埃及，从赫尔格达开车到开罗的路上，我惊讶地看到巨大的圆形农田消耗着尼罗河的巨大水量。我问导游，为什么埃及不开发大规模的太阳能农场，这样可以生产足够的剩余电力出售给其他国家，以便他们能够从不需要榨干尼罗河种植粮食的国家购买食物。还有大片沙漠地区无法用于其他用途。这让我觉得很疯狂。也许你们的观众能告诉我为什么这没有意义。
 
@Robert-pz8lb
The main issue is that the cost of sending that power from desert installed panels to places where people live makes this uneconomical. There were some YouTube videos about sending power from Sahara desert in Africa to Europe. We may have a better situation with cities like Las Vegas, San Diego, Phoenix and more, but we need smarter government than we have now.
 
主要问题是，将沙漠中安装的电力传输到人们居住的地方的成本使其经济上不可行。有一些YouTube视频讲述了如何将非洲撒哈拉沙漠的电力输送到欧洲。对于像拉斯维加斯、圣地亚哥、凤凰城等城市，我们可能有更好的情况，但我们需要比现在更聪明的政府。
 
@patrickdegenaar9495
I live in Northern England. Nothing grows under motorway bridges up here. Too dark. Too cold. In more southern latitudes it can be like  a jungle underneath. So i suspect it depends on latitude.
 
我住在英格兰北部。在这里，高速公路桥下什么都长不起来。太黑了，太冷了。在更南的纬度下，那里可能像丛林一样。所以我怀疑这取决于纬度。
 
@chrisconklin2981
Could it be the case that one day we will discover that we have a surplus of renewable energy?  My problem with massive solar farms is that many are financed by investors and are located at distance from points of use. Rooftop solar, geothermal, and high altitude kite turbines are good balancing technologies.
 
有一天我们会发现我们有多余的可再生能源吗？我对大型太阳能农场的问题在于，许多是由投资者资助的，并且距离使用点很远。屋顶太阳能、地热能和高空风筝涡轮机都是很好的平衡技术。
 
@j12997967
I would very much appreciate any coverage you feel like giving toward passive radiative cooling and any other efforts to mitigate heat, locally or globally.
While I'm not necessarily advocating for atmospheric seeding, or any other method, for that matter, and believe that renewable electrification must replace fossil fuels, we ALREADY seem to be on the brink of tipping points such as the release of CO2 and CH4 from thawing permafrost, frequent mega forest fires, and the loss of albedo as snow and ice melt, that could render our decarbonization efforts moot.
I think heat mitigation has to be a major focus in parallel with everything else.
 
我非常希望你能涵盖被动辐射冷却以及任何其他缓解热量的努力，无论是在地方还是全球。虽然我并不一定倡导大气播种或任何其他方法，但我认为可再生电气化必须取代化石燃料，我们似乎已经处于一些临界点的边缘，比如从融化的永久冻土中释放的二氧化碳和甲烷、频繁的超级森林火灾，以及随着雪和冰融化而失去的反照率，这可能使我们的脱碳努力变得无效。我认为热量缓解必须与其他一切并行作为一个主要关注点。
 
@jimbo92107
Finally, people are beginning to think ecologically. Solar panels in a desert do not need to fight against nature. A panel can be engineered to disturb the native soil just enough to make it a bit more fertile. At the base, where deep stakes hold the panel grid still against wind, the soil intrusions can be wetted by a water collector, and fertilized with mycorrhizal organisms that make plant growth easier, especially native ones. Partial shade, moisture, and organisms that feed plant roots.
 
最终，人们开始以生态的方式思考。在沙漠中的太阳能电池板不需要与自然抗争。可以设计面板，使其仅仅足以打扰原生土壤，从而使其稍微更肥沃。在基础处，深桩固定面板网格以抵御风，土壤入侵处可以通过水收集器湿润，并用菌根生物肥料来促进植物生长，尤其是本地植物。部分阴影、湿度以及滋养植物根系的生物。
 
@andrewradford3953
I'd like to see more information on the electrification of farming. Are there any solutions for high use tractors. We've upgraded most of our farm equipment to electric. A 52" ride on for mowing about half our 20 acre farm. Chainsaws, trimmers, irrigation pumps, hot water, and our car since 2017. Everything we regularly use is electric except for our 55 year old tractor.
My next goal for this year is storage using batteries from written off BYDs.
We use the solar array I built to park or charge under, as well as storing the usual farm junk collection.
 
我希望看到更多关于农业电气化的信息。对于高耗能的拖拉机，有没有解决方案？我们已经将大部分农场设备升级为电动。一个52英寸的骑乘式割草机用于割我们20英亩农场的一半。链锯、修剪机、灌溉泵、热水器，以及自2017年以来的汽车。除了我们55岁的拖拉机，所有我们定期使用的设备都是电动的。今年我的下一个目标是使用报废的比亚迪电池进行储存。我们利用我建造的太阳能阵列来停车或充电，同时也用来存放通常的农场杂物。
 
@chrissscottt
I'm surprised you didn't mention vertical double-sided panels. They're relatively common apparently and allow more light to hit the ground and more space for grazing animals.
 
我很惊讶你没有提到垂直双面太阳能电池板。显然它们相对常见，可以让更多的光照射到地面，并为放牧动物提供更多空间。
 
@Raztwo3
I think it’s worth mentioning that the 800,000 sqkm mentioned at the start is about half of 1% of the total land area on earth
 
我认为值得一提的是，开始时提到的80万平方公里大约是地球总陆地面积的0.5%。
 
@Frantastic78
I’m not sure how true it was but I remember seeing something about how greening up the Sahara was affecting the Amazon. Something about a change in the nutrients from the desert riding the winds to the rainforest.
 
我不确定这有多真实，但我记得看到过关于沙漠绿化如何影响亚马逊的一些说法。好像是关于沙漠中的养分随风飘到雨林的变化。
 
@12theotherandrew
Absolutely fascinating study. Alas such studies weren’t/couldn’t be carried out before the headlong dash for steam power and internal combustion engines. Now we have to hope these studies aren’t completely ignored.
 
这项研究真是令人着迷。可惜在我们飞速追求蒸汽动力和内燃机之前，这样的研究未能进行。现在我们只能希望这些研究不会被完全忽视。
 
@anonablous
no one cried when grass was replaced with asphalt, but poopoo on solar panels. sick. regardless of all the red herrings, still better than poisonous oil, by orders of magnitude....
 
当草地被沥青取代时没有人哭泣，但对太阳能电池板却表示反对，真让人恶心。无论如何，这比有毒的石油要好几个数量级……
 
@Andrew-rc3vh
A general rule of thumb with plants is the level of light drives the photosynthesis, but as it does, the plant demands more nutrients, CO2 and water. Whatever is the lowest in terms of supply determines the cut off point to growth rate. Also different plants are adapted to different light levels. Those that grow close to the ground are often good for low light, like lettuce.
 
植物的一般经验法则是光照水平驱动光合作用，但随着光合作用的进行，植物需要更多的养分、二氧化碳和水。供应中最低的成分决定了生长速率的截止点。此外，不同植物适应不同的光照水平。那些生长在靠近地面的植物通常适合低光照环境，比如生菜。
 
@jurakarok3343
Solar farms effectively provide an artificial canopy.  Shade provided by canopies is a vital part of what supports forest vitality.  It is nice to see that solar farms can mimic that effect, and that effect is enough to push toward revitalizing the local ecosystem. This can be a possible alternative to manually replanting an area in hopes of not missing a small key detail and getting it wrong.  Perhaps it can serve as a starting point before replanting efforts.
 
太阳能农场有效地提供了人造冠层。冠层提供的阴影是支持森林生机的重要组成部分。看到太阳能农场能够模拟这种效果，并且这种效果足以推动当地生态系统的复兴，真是太好了。这可以作为一种替代手段，避免在人为重新种植一个区域时错过一些关键细节而出错。或许这可以作为重新种植努力的起点。
 
@RichardWarren-k3j
You need to cover the needed shift to salt battery storage devices and the dreamatic ccst drop!
 
你需要讨论一下向盐电池存储设备转变的必要性，以及梦幻般的成本下降！
 
@TheyCalledMeT
solar panels take up a role typically done by trees, offer shade helping plants in places where too much or too insense sun is available and maybe too little water
 
太阳能电池板承担了通常由树木完成的角色，提供阴影，帮助植物在阳光过于强烈或水分过少的地方生长。
 
@kevinc-727
Agro voltaics should be promoted with good selling price to grid to get more solar with dual benefit, and solar panels are cheaper than some roofing materials for shade structures for cattle, etc.
 
应该以良好的上网电价推广农业光伏，以获取更多的太阳能，实现双重收益，并且太阳能电池板的成本低于一些用于牛群等遮阳结构的屋顶材料。
 
@TransVoiceCoach
Video topic suggestion: I'm not sure how well this fits? but A comparison between the benefits and detriments of passive houses vs other building standards? Around the climate benefits and resource requirements if papers on such exist?
 
视频主题建议：我不确定这是否适合？但可以比较被动房屋与其他建筑标准的优缺点？围绕气候效益和资源需求，如果有相关论文的话？
 
@BrentHollett
Commercial and residential rooftop solar remains the best option for both land use (it's already used) and transmission costs (generation at the source).
 
商业和住宅屋顶太阳能仍然是最佳选择，因为它在土地利用上（已经被使用）和传输成本上（源头发电）。
 
@adymode
Fossil and nuclear plants have a much greater and more unusual effect on microclimate, they emit about 3 times as much energy that they generate, a significant amount ascends and causes a temperature inversion and microclimate above them. Its a published meteorological phenomenon. Solar arrays have a much smaller meteorological effect per unit generated, since they dont output additional energy. They can increase albedo, but send 20 to 30% away as electricity. Power plant output electricity AND waste heat to their surrounds, which is about 10 times as great as same power solar array can practically affect.
 
化石燃料和核电厂对微气候的影响更大且更为特殊，它们排放的能量大约是其发电量的三倍，产生的相当一部分能量上升并造成温度倒置及其上方的微气候。这是一个已发表的气象现象。太阳能阵列每单位发电的气象效应要小得多，因为它们不会输出额外的能量。它们可以增加反照率，但将20%到30%的能量以电力形式送走。发电厂不仅输出电力，还将废热释放到周围环境中，这种影响约是同样功率的太阳能阵列能实际影响的十倍。
 
@sueeverett277
As an ecologist I have long been concerned with an assumption that deserts are lifeless places that could be plastered with solar panels and that's there would be no adverse impacts. So it's good to see the research to understand the implications for the environment in these fragile add ecologically sensitive places.
 
作为一名生态学家，我一直担心一种假设，即沙漠是无生命的地方，可以随意铺满太阳能电池板，而不会产生不利影响。因此，看到研究了解这些脆弱且生态敏感地区对环境的影响是件好事。
 
@xoxo2008oxox
So much impermeable parking surfaces that could be covered with solar, providing protection as car-parks and power. Apartment lots, shopping lots, business parks,... whereas the desert has too much heat and temp changes at night that panels longevity would be reduced. But then, I would think wind power would be better, yet sand is an abrasive.
 
有如此多的不可渗透停车场表面可以覆盖太阳能，既可以作为停车场提供保护，又可以发电。公寓停车场、购物中心停车场、商业园区……而沙漠的热量过高，夜间温差变化大，这会减少面板的耐用性。但我认为风能可能会更好，不过沙子是有磨损性的。
 
@budawang77
Rooftops in Australia are already producing about 13% of total electricity production. If 100% of all rooftops, both residential and commercial, were covered in solar panels it would come close to covering 100% of demand.
 
澳大利亚的屋顶已经产生了大约13%的总电力。如果所有住宅和商业屋顶都覆盖上太阳能电池板，几乎可以满足100%的电力需求。